Android MediaRecorder 后台视频录制

题记：记录下这几天一直在苦恼的一件事，心情各种起伏。先是有个变态的客户（嗯，真心觉得）提出原有的录音不够，还要有录像，不过是悄悄的，后台录像，懂的，不能在软件界面上面展示出来；这不是不道德的吗？可是木办法，咱只是做事的，我只能说从技术上肯定是可行，但是道德上，感觉挺混蛋的。于是开始学习看如何做。由于使用API提供的自定义视频，必须要按照那一套写法，感觉中间最关键还是是必须要有surfaceview这个界面预览，说白了，是必须在界面上面展现的。然后各种尝试，闲话不说啦，下面记录下尝试的过程。

一、制作demo。

demo主要实现的功能是activity一启动的时候就自动的启动一后台线程进行录像。当然，录像有时间限制，到时间后自动关闭。同时不显示预览效果。

主要用到了三个文件：RecordDemoActivity 主界面，RecordThread录像线程以及主界面的样式文件main.xml。

1.RecordDemoActivity 

<p style="margin-top: 0px; margin-bottom: 10px; padding-top: 0px; padding-bottom: 0px;"><span class="kwd" style="color: rgb(0, 0, 136);">package</span><span class="pln" style="color: rgb(0, 0, 0);"> com</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="pln" style="color: rgb(0, 0, 0);">demo</span><span class="pun" style="color: rgb(102, 102, 0);">;</span><span class="kwd" style="color: rgb(0, 0, 136);">import</span><span class="pln" style="color: rgb(0, 0, 0);"> android</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="pln" style="color: rgb(0, 0, 0);">app</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="typ" style="color: rgb(102, 0, 102);">Activity</span><span class="pun" style="color: rgb(102, 102, 0);">;</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="kwd" style="color: rgb(0, 0, 136);">import</span><span class="pln" style="color: rgb(0, 0, 0);"> android</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="pln" style="color: rgb(0, 0, 0);">os</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="typ" style="color: rgb(102, 0, 102);">Bundle</span><span class="pun" style="color: rgb(102, 102, 0);">;</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="kwd" style="color: rgb(0, 0, 136);">import</span><span class="pln" style="color: rgb(0, 0, 0);"> android</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="pln" style="color: rgb(0, 0, 0);">util</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="typ" style="color: rgb(102, 0, 102);">Log</span><span class="pun" style="color: rgb(102, 102, 0);">;</span><span class="kwd" style="color: rgb(0, 0, 136);">import</span><span class="pln" style="color: rgb(0, 0, 0);"> android</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="pln" style="color: rgb(0, 0, 0);">view</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="typ" style="color: rgb(102, 0, 102);">SurfaceHolder</span><span class="pun" style="color: rgb(102, 102, 0);">;</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="kwd" style="color: rgb(0, 0, 136);">import</span><span class="pln" style="color: rgb(0, 0, 0);"> android</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="pln" style="color: rgb(0, 0, 0);">view</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="typ" style="color: rgb(102, 0, 102);">SurfaceView</span><span class="pun" style="color: rgb(102, 102, 0);">;</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="kwd" style="color: rgb(0, 0, 136);">import</span><span class="pln" style="color: rgb(0, 0, 0);"> android</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="pln" style="color: rgb(0, 0, 0);">widget</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="typ" style="color: rgb(102, 0, 102);">LinearLayout</span><span class="pun" style="color: rgb(102, 102, 0);">;</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="com" style="color: rgb(136, 0, 0);">/**</span><span class="com" style="color: rgb(136, 0, 0);"> * class name：RecordDemoActivity<BR></span><span class="com" style="color: rgb(136, 0, 0);"> * class description：demo<BR></span><span class="com" style="color: rgb(136, 0, 0);"> *<BR></span><span class="com" style="color: rgb(136, 0, 0);"> * </span><span class="com" style="color: rgb(136, 0, 0);"> * @version 1.0 2012/08/02</span><span class="com" style="color: rgb(136, 0, 0);"> * @author bcaiw</span><span class="com" style="color: rgb(136, 0, 0);"> */</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="kwd" style="color: rgb(0, 0, 136);">public</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="kwd" style="color: rgb(0, 0, 136);">class</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="typ" style="color: rgb(102, 0, 102);">RecordDemoActivity</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="kwd" style="color: rgb(0, 0, 136);">extends</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="typ" style="color: rgb(102, 0, 102);">Activity</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="kwd" style="color: rgb(0, 0, 136);">implements</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="typ" style="color: rgb(102, 0, 102);">SurfaceHolder</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="typ" style="color: rgb(102, 0, 102);">Callback</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pun" style="color: rgb(102, 102, 0);">{</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pln" style="color: rgb(0, 0, 0);">   </span><span class="pln" style="color: rgb(0, 0, 0);">    </span><span class="kwd" style="color: rgb(0, 0, 136);">private</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="typ" style="color: rgb(102, 0, 102);">SurfaceView</span><span class="pln" style="color: rgb(0, 0, 0);"> surfaceview</span><span class="pun" style="color: rgb(102, 102, 0);">;</span><span class="com" style="color: rgb(136, 0, 0);">// 视频预览控件</span><span class="pln" style="color: rgb(0, 0, 0);">    </span><span class="kwd" style="color: rgb(0, 0, 136);">private</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="typ" style="color: rgb(102, 0, 102);">LinearLayout</span><span class="pln" style="color: rgb(0, 0, 0);"> lay</span><span class="pun" style="color: rgb(102, 102, 0);">;</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="com" style="color: rgb(136, 0, 0);">//愿揽控件的</span><span class="pln" style="color: rgb(0, 0, 0);">    </span><span class="kwd" style="color: rgb(0, 0, 136);">private</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="typ" style="color: rgb(102, 0, 102);">SurfaceHolder</span><span class="pln" style="color: rgb(0, 0, 0);"> surfaceHolder</span><span class="pun" style="color: rgb(102, 102, 0);">;</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="com" style="color: rgb(136, 0, 0);">//和surfaceView相关的</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pln" style="color: rgb(0, 0, 0);">    </span><span class="com" style="color: rgb(136, 0, 0);">/**</span><span class="com" style="color: rgb(136, 0, 0);">     * onCreate方法</span><span class="com" style="color: rgb(136, 0, 0);">     */</span><span class="pln" style="color: rgb(0, 0, 0);">    </span><span class="kwd" style="color: rgb(0, 0, 136);">public</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="kwd" style="color: rgb(0, 0, 136);">void</span><span class="pln" style="color: rgb(0, 0, 0);"> onCreate</span><span class="pun" style="color: rgb(102, 102, 0);">(</span><span class="typ" style="color: rgb(102, 0, 102);">Bundle</span><span class="pln" style="color: rgb(0, 0, 0);"> savedInstanceState</span><span class="pun" style="color: rgb(102, 102, 0);">)</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pun" style="color: rgb(102, 102, 0);">{</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pln" style="color: rgb(0, 0, 0);">        </span><span class="kwd" style="color: rgb(0, 0, 136);">super</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="pln" style="color: rgb(0, 0, 0);">onCreate</span><span class="pun" style="color: rgb(102, 102, 0);">(</span><span class="pln" style="color: rgb(0, 0, 0);">savedInstanceState</span><span class="pun" style="color: rgb(102, 102, 0);">);</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pln" style="color: rgb(0, 0, 0);">       </span><span class="pln" style="color: rgb(0, 0, 0);">        setContentView</span><span class="pun" style="color: rgb(102, 102, 0);">(</span><span class="pln" style="color: rgb(0, 0, 0);">R</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="pln" style="color: rgb(0, 0, 0);">layout</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="pln" style="color: rgb(0, 0, 0);">main</span><span class="pun" style="color: rgb(102, 102, 0);">);</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pln" style="color: rgb(0, 0, 0);">        </span><span class="com" style="color: rgb(136, 0, 0);">//初始化控件</span><span class="pln" style="color: rgb(0, 0, 0);">        init</span><span class="pun" style="color: rgb(102, 102, 0);">();</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pln" style="color: rgb(0, 0, 0);">    </span><span class="pun" style="color: rgb(102, 102, 0);">}</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pln" style="color: rgb(0, 0, 0);">    </span><span class="com" style="color: rgb(136, 0, 0);">/**</span><span class="com" style="color: rgb(136, 0, 0);">     * 初始化控件以及回调</span><span class="com" style="color: rgb(136, 0, 0);">     */</span><span class="pln" style="color: rgb(0, 0, 0);">    </span><span class="kwd" style="color: rgb(0, 0, 136);">private</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="kwd" style="color: rgb(0, 0, 136);">void</span><span class="pln" style="color: rgb(0, 0, 0);"> init</span><span class="pun" style="color: rgb(102, 102, 0);">()</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pun" style="color: rgb(102, 102, 0);">{</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pln" style="color: rgb(0, 0, 0);">       </span><span class="pln" style="color: rgb(0, 0, 0);">        surfaceview </span><span class="pun" style="color: rgb(102, 102, 0);">=</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pun" style="color: rgb(102, 102, 0);">(</span><span class="typ" style="color: rgb(102, 0, 102);">SurfaceView</span><span class="pun" style="color: rgb(102, 102, 0);">)</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="kwd" style="color: rgb(0, 0, 136);">this</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="pln" style="color: rgb(0, 0, 0);">findViewById</span><span class="pun" style="color: rgb(102, 102, 0);">(</span><span class="pln" style="color: rgb(0, 0, 0);">R</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="pln" style="color: rgb(0, 0, 0);">id</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="pln" style="color: rgb(0, 0, 0);">surfaceview</span><span class="pun" style="color: rgb(102, 102, 0);">);</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pln" style="color: rgb(0, 0, 0);">        lay</span><span class="pun" style="color: rgb(102, 102, 0);">=(</span><span class="typ" style="color: rgb(102, 0, 102);">LinearLayout</span><span class="pun" style="color: rgb(102, 102, 0);">)</span><span class="kwd" style="color: rgb(0, 0, 136);">this</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="pln" style="color: rgb(0, 0, 0);">findViewById</span><span class="pun" style="color: rgb(102, 102, 0);">(</span><span class="pln" style="color: rgb(0, 0, 0);">R</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="pln" style="color: rgb(0, 0, 0);">id</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="pln" style="color: rgb(0, 0, 0);">lay</span><span class="pun" style="color: rgb(102, 102, 0);">);</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pln" style="color: rgb(0, 0, 0);">       </span><span style="color: rgb(255, 0, 0);"><span class="pln" style="color: rgb(0, 0, 0);"> lay</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="pln" style="color: rgb(0, 0, 0);">setVisibility</span><span class="pun" style="color: rgb(102, 102, 0);">(</span><span class="typ" style="color: rgb(102, 0, 102);">LinearLayout</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="pln" style="color: rgb(0, 0, 0);">INVISIBLE</span><span class="pun" style="color: rgb(102, 102, 0);">);</span></span><span class="pln" style="color: rgb(0, 0, 0);">        </span><span class="typ" style="color: rgb(102, 0, 102);">SurfaceHolder</span><span class="pln" style="color: rgb(0, 0, 0);"> holder </span><span class="pun" style="color: rgb(102, 102, 0);">=</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="kwd" style="color: rgb(0, 0, 136);">this</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="pln" style="color: rgb(0, 0, 0);">surfaceview</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="pln" style="color: rgb(0, 0, 0);">getHolder</span><span class="pun" style="color: rgb(102, 102, 0);">();</span><span class="com" style="color: rgb(136, 0, 0);">// 取得holder </span><span class="pln" style="color: rgb(0, 0, 0);">     holder</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="pln" style="color: rgb(0, 0, 0);">addCallback</span><span class="pun" style="color: rgb(102, 102, 0);">(</span><span class="kwd" style="color: rgb(0, 0, 136);">this</span><span class="pun" style="color: rgb(102, 102, 0);">);</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="com" style="color: rgb(136, 0, 0);">// holder加入回调接口 </span><span class="pln" style="color: rgb(0, 0, 0);">     </span><span class="com" style="color: rgb(136, 0, 0);">// 设置setType</span><span class="pln" style="color: rgb(0, 0, 0);">     holder</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="pln" style="color: rgb(0, 0, 0);">setType</span><span class="pun" style="color: rgb(102, 102, 0);">(</span><span class="typ" style="color: rgb(102, 0, 102);">SurfaceHolder</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="pln" style="color: rgb(0, 0, 0);">SURFACE_TYPE_PUSH_BUFFERS</span><span class="pun" style="color: rgb(102, 102, 0);">);</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pln" style="color: rgb(0, 0, 0);">         </span><span class="pln" style="color: rgb(0, 0, 0);">    </span><span class="pun" style="color: rgb(102, 102, 0);">}</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pln" style="color: rgb(0, 0, 0);">  </span><span class="pln" style="color: rgb(0, 0, 0);">    </span><span class="lit" style="color: rgb(0, 102, 102);">@Override</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pln" style="color: rgb(0, 0, 0);">    </span><span class="kwd" style="color: rgb(0, 0, 136);">public</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="kwd" style="color: rgb(0, 0, 136);">void</span><span class="pln" style="color: rgb(0, 0, 0);"> surfaceChanged</span><span class="pun" style="color: rgb(102, 102, 0);">(</span><span class="typ" style="color: rgb(102, 0, 102);">SurfaceHolder</span><span class="pln" style="color: rgb(0, 0, 0);"> holder</span><span class="pun" style="color: rgb(102, 102, 0);">,</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="kwd" style="color: rgb(0, 0, 136);">int</span><span class="pln" style="color: rgb(0, 0, 0);"> format</span><span class="pun" style="color: rgb(102, 102, 0);">,</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="kwd" style="color: rgb(0, 0, 136);">int</span><span class="pln" style="color: rgb(0, 0, 0);"> width</span><span class="pun" style="color: rgb(102, 102, 0);">,</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pln" style="color: rgb(0, 0, 0);">            </span><span class="kwd" style="color: rgb(0, 0, 136);">int</span><span class="pln" style="color: rgb(0, 0, 0);"> height</span><span class="pun" style="color: rgb(102, 102, 0);">)</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pun" style="color: rgb(102, 102, 0);">{</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pln" style="color: rgb(0, 0, 0);">        </span><span class="com" style="color: rgb(136, 0, 0);">// 将holder，这个holder为开始在oncreat里面取得的holder，将它赋给surfaceHolder </span><span class="pln" style="color: rgb(0, 0, 0);">        surfaceHolder </span><span class="pun" style="color: rgb(102, 102, 0);">=</span><span class="pln" style="color: rgb(0, 0, 0);"> holder</span><span class="pun" style="color: rgb(102, 102, 0);">;</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pln" style="color: rgb(0, 0, 0);">        </span><span class="pln" style="color: rgb(0, 0, 0);">    </span><span class="pun" style="color: rgb(102, 102, 0);">}</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pln" style="color: rgb(0, 0, 0);">    </span><span class="lit" style="color: rgb(0, 102, 102);">@Override</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pln" style="color: rgb(0, 0, 0);">    </span><span class="kwd" style="color: rgb(0, 0, 136);">public</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="kwd" style="color: rgb(0, 0, 136);">void</span><span class="pln" style="color: rgb(0, 0, 0);"> surfaceCreated</span><span class="pun" style="color: rgb(102, 102, 0);">(</span><span class="typ" style="color: rgb(102, 0, 102);">SurfaceHolder</span><span class="pln" style="color: rgb(0, 0, 0);"> holder</span><span class="pun" style="color: rgb(102, 102, 0);">)</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pun" style="color: rgb(102, 102, 0);">{</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pln" style="color: rgb(0, 0, 0);">        </span><span class="com" style="color: rgb(136, 0, 0);">// 将holder，这个holder为开始在oncreat里面取得的holder，将它赋给surfaceHolder </span><span class="pln" style="color: rgb(0, 0, 0);">        surfaceHolder </span><span class="pun" style="color: rgb(102, 102, 0);">=</span><span class="pln" style="color: rgb(0, 0, 0);"> holder</span><span class="pun" style="color: rgb(102, 102, 0);">;</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pln" style="color: rgb(0, 0, 0);">     </span><span class="typ" style="color: rgb(102, 0, 102);">Log</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="pln" style="color: rgb(0, 0, 0);">i</span><span class="pun" style="color: rgb(102, 102, 0);">(</span><span class="str" style="color: rgb(0, 136, 0);">"process"</span><span class="pun" style="color: rgb(102, 102, 0);">,</span><span class="typ" style="color: rgb(102, 0, 102);">Thread</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="pln" style="color: rgb(0, 0, 0);">currentThread</span><span class="pun" style="color: rgb(102, 102, 0);">().</span><span class="pln" style="color: rgb(0, 0, 0);">getName</span><span class="pun" style="color: rgb(102, 102, 0);">());</span><span class="pln" style="color: rgb(0, 0, 0);">     </span><span class="com" style="color: rgb(136, 0, 0);">//录像线程，当然也可以在别的地方启动，但是一定要在onCreate方法执行完成以及surfaceHolder被赋值以后启动</span><span class="pln" style="color: rgb(0, 0, 0);">      </span><span style="color: rgb(255, 0, 0);"><span class="typ" style="color: rgb(102, 0, 102);">RecordThread</span><span class="pln" style="color: rgb(0, 0, 0);"> thread</span><span class="pun" style="color: rgb(102, 102, 0);">=</span><span class="kwd" style="color: rgb(0, 0, 136);">new</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="typ" style="color: rgb(102, 0, 102);">RecordThread</span><span class="pun" style="color: rgb(102, 102, 0);">(</span><span class="lit" style="color: rgb(0, 102, 102);">1000</span><span class="pun" style="color: rgb(102, 102, 0);">,</span><span class="pln" style="color: rgb(0, 0, 0);">surfaceview</span><span class="pun" style="color: rgb(102, 102, 0);">,</span><span class="pln" style="color: rgb(0, 0, 0);">surfaceHolder</span><span class="pun" style="color: rgb(102, 102, 0);">);</span></span><span class="pln" style="color: rgb(0, 0, 0);">        thread</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="pln" style="color: rgb(0, 0, 0);">start</span><span class="pun" style="color: rgb(102, 102, 0);">();</span><span class="pln" style="color: rgb(0, 0, 0);">        </span><span class="pln" style="color: rgb(0, 0, 0);">    </span><span class="pun" style="color: rgb(102, 102, 0);">}</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pln" style="color: rgb(0, 0, 0);">    </span><span class="lit" style="color: rgb(0, 102, 102);">@Override</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pln" style="color: rgb(0, 0, 0);">    </span><span class="kwd" style="color: rgb(0, 0, 136);">public</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="kwd" style="color: rgb(0, 0, 136);">void</span><span class="pln" style="color: rgb(0, 0, 0);"> surfaceDestroyed</span><span class="pun" style="color: rgb(102, 102, 0);">(</span><span class="typ" style="color: rgb(102, 0, 102);">SurfaceHolder</span><span class="pln" style="color: rgb(0, 0, 0);"> holder</span><span class="pun" style="color: rgb(102, 102, 0);">)</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pun" style="color: rgb(102, 102, 0);">{</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pln" style="color: rgb(0, 0, 0);">        </span><span class="com" style="color: rgb(136, 0, 0);">// surfaceDestroyed的时候同时对象设置为null </span><span class="pln" style="color: rgb(0, 0, 0);">        surfaceview </span><span class="pun" style="color: rgb(102, 102, 0);">=</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="kwd" style="color: rgb(0, 0, 136);">null</span><span class="pun" style="color: rgb(102, 102, 0);">;</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pln" style="color: rgb(0, 0, 0);">        surfaceHolder </span><span class="pun" style="color: rgb(102, 102, 0);">=</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="kwd" style="color: rgb(0, 0, 136);">null</span><span class="pun" style="color: rgb(102, 102, 0);">;</span><span class="pln" style="color: rgb(0, 0, 0);">        </span><span class="pln" style="color: rgb(0, 0, 0);">    </span><span class="pun" style="color: rgb(102, 102, 0);">}</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pun" style="color: rgb(102, 102, 0);">}</span><span class="pln" style="color: rgb(0, 0, 0);"> </span></p>

2.RecordThread

<p style="margin-top: 0px; margin-bottom: 10px; padding-top: 0px; padding-bottom: 0px;"><span class="kwd" style="color: rgb(0, 0, 136);">package</span><span class="pln" style="color: rgb(0, 0, 0);"> com</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="pln" style="color: rgb(0, 0, 0);">demo</span><span class="pun" style="color: rgb(102, 102, 0);">;</span><span class="kwd" style="color: rgb(0, 0, 136);">import</span><span class="pln" style="color: rgb(0, 0, 0);"> java</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="pln" style="color: rgb(0, 0, 0);">io</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="typ" style="color: rgb(102, 0, 102);">IOException</span><span class="pun" style="color: rgb(102, 102, 0);">;</span><span class="kwd" style="color: rgb(0, 0, 136);">import</span><span class="pln" style="color: rgb(0, 0, 0);"> java</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="pln" style="color: rgb(0, 0, 0);">util</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="typ" style="color: rgb(102, 0, 102);">Date</span><span class="pun" style="color: rgb(102, 102, 0);">;</span><span class="kwd" style="color: rgb(0, 0, 136);">import</span><span class="pln" style="color: rgb(0, 0, 0);"> java</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="pln" style="color: rgb(0, 0, 0);">util</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="typ" style="color: rgb(102, 0, 102);">Timer</span><span class="pun" style="color: rgb(102, 102, 0);">;</span><span class="kwd" style="color: rgb(0, 0, 136);">import</span><span class="pln" style="color: rgb(0, 0, 0);"> java</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="pln" style="color: rgb(0, 0, 0);">util</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="typ" style="color: rgb(102, 0, 102);">TimerTask</span><span class="pun" style="color: rgb(102, 102, 0);">;</span><span class="kwd" style="color: rgb(0, 0, 136);">import</span><span class="pln" style="color: rgb(0, 0, 0);"> android</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="pln" style="color: rgb(0, 0, 0);">hardware</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="typ" style="color: rgb(102, 0, 102);">Camera</span><span class="pun" style="color: rgb(102, 102, 0);">;</span><span class="kwd" style="color: rgb(0, 0, 136);">import</span><span class="pln" style="color: rgb(0, 0, 0);"> android</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="pln" style="color: rgb(0, 0, 0);">media</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="typ" style="color: rgb(102, 0, 102);">CamcorderProfile</span><span class="pun" style="color: rgb(102, 102, 0);">;</span><span class="kwd" style="color: rgb(0, 0, 136);">import</span><span class="pln" style="color: rgb(0, 0, 0);"> android</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="pln" style="color: rgb(0, 0, 0);">media</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="typ" style="color: rgb(102, 0, 102);">MediaRecorder</span><span class="pun" style="color: rgb(102, 102, 0);">;</span><span class="kwd" style="color: rgb(0, 0, 136);">import</span><span class="pln" style="color: rgb(0, 0, 0);"> android</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="pln" style="color: rgb(0, 0, 0);">util</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="typ" style="color: rgb(102, 0, 102);">Log</span><span class="pun" style="color: rgb(102, 102, 0);">;</span><span class="kwd" style="color: rgb(0, 0, 136);">import</span><span class="pln" style="color: rgb(0, 0, 0);"> android</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="pln" style="color: rgb(0, 0, 0);">view</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="typ" style="color: rgb(102, 0, 102);">SurfaceHolder</span><span class="pun" style="color: rgb(102, 102, 0);">;</span><span class="kwd" style="color: rgb(0, 0, 136);">import</span><span class="pln" style="color: rgb(0, 0, 0);"> android</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="pln" style="color: rgb(0, 0, 0);">view</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="typ" style="color: rgb(102, 0, 102);">SurfaceView</span><span class="pun" style="color: rgb(102, 102, 0);">;</span><span class="com" style="color: rgb(136, 0, 0);">/**</span><span class="com" style="color: rgb(136, 0, 0);"> * 录像线程</span><span class="com" style="color: rgb(136, 0, 0);"> * </span><span class="com" style="color: rgb(136, 0, 0);"> * @author bcaiw</span><span class="com" style="color: rgb(136, 0, 0);"> * </span><span class="com" style="color: rgb(136, 0, 0);"> */</span><span class="kwd" style="color: rgb(0, 0, 136);">public</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="kwd" style="color: rgb(0, 0, 136);">class</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="typ" style="color: rgb(102, 0, 102);">RecordThread</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="kwd" style="color: rgb(0, 0, 136);">extends</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="typ" style="color: rgb(102, 0, 102);">Thread</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pun" style="color: rgb(102, 102, 0);">{</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="kwd" style="color: rgb(0, 0, 136);">private</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="typ" style="color: rgb(102, 0, 102);">MediaRecorder</span><span class="pln" style="color: rgb(0, 0, 0);"> mediarecorder</span><span class="pun" style="color: rgb(102, 102, 0);">;</span><span class="com" style="color: rgb(136, 0, 0);">// 录制视频的类</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="kwd" style="color: rgb(0, 0, 136);">private</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="typ" style="color: rgb(102, 0, 102);">SurfaceHolder</span><span class="pln" style="color: rgb(0, 0, 0);"> surfaceHolder</span><span class="pun" style="color: rgb(102, 102, 0);">;</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="kwd" style="color: rgb(0, 0, 136);">private</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="kwd" style="color: rgb(0, 0, 136);">long</span><span class="pln" style="color: rgb(0, 0, 0);"> recordTime</span><span class="pun" style="color: rgb(102, 102, 0);">;</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="kwd" style="color: rgb(0, 0, 136);">private</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="typ" style="color: rgb(102, 0, 102);">SurfaceView</span><span class="pln" style="color: rgb(0, 0, 0);"> surfaceview</span><span class="pun" style="color: rgb(102, 102, 0);">;</span><span class="com" style="color: rgb(136, 0, 0);">// 显示视频的控件</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="kwd" style="color: rgb(0, 0, 136);">private</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="typ" style="color: rgb(102, 0, 102);">Camera</span><span class="pln" style="color: rgb(0, 0, 0);"> mCamera</span><span class="pun" style="color: rgb(102, 102, 0);">;</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="kwd" style="color: rgb(0, 0, 136);">public</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="typ" style="color: rgb(102, 0, 102);">RecordThread</span><span class="pun" style="color: rgb(102, 102, 0);">(</span><span class="kwd" style="color: rgb(0, 0, 136);">long</span><span class="pln" style="color: rgb(0, 0, 0);"> recordTime</span><span class="pun" style="color: rgb(102, 102, 0);">,</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="typ" style="color: rgb(102, 0, 102);">SurfaceView</span><span class="pln" style="color: rgb(0, 0, 0);"> surfaceview</span><span class="pun" style="color: rgb(102, 102, 0);">,</span><span class="pln" style="color: rgb(0, 0, 0);">   </span><span class="typ" style="color: rgb(102, 0, 102);">SurfaceHolder</span><span class="pln" style="color: rgb(0, 0, 0);"> surfaceHolder</span><span class="pun" style="color: rgb(102, 102, 0);">)</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pun" style="color: rgb(102, 102, 0);">{</span><span class="pln" style="color: rgb(0, 0, 0);">  </span><span class="kwd" style="color: rgb(0, 0, 136);">this</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="pln" style="color: rgb(0, 0, 0);">recordTime </span><span class="pun" style="color: rgb(102, 102, 0);">=</span><span class="pln" style="color: rgb(0, 0, 0);"> recordTime</span><span class="pun" style="color: rgb(102, 102, 0);">;</span><span class="pln" style="color: rgb(0, 0, 0);">  </span><span class="kwd" style="color: rgb(0, 0, 136);">this</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="pln" style="color: rgb(0, 0, 0);">surfaceview </span><span class="pun" style="color: rgb(102, 102, 0);">=</span><span class="pln" style="color: rgb(0, 0, 0);"> surfaceview</span><span class="pun" style="color: rgb(102, 102, 0);">;</span><span class="pln" style="color: rgb(0, 0, 0);">  </span><span class="kwd" style="color: rgb(0, 0, 136);">this</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="pln" style="color: rgb(0, 0, 0);">surfaceHolder </span><span class="pun" style="color: rgb(102, 102, 0);">=</span><span class="pln" style="color: rgb(0, 0, 0);"> surfaceHolder</span><span class="pun" style="color: rgb(102, 102, 0);">;</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pun" style="color: rgb(102, 102, 0);">}</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="lit" style="color: rgb(0, 102, 102);">@Override</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="kwd" style="color: rgb(0, 0, 136);">public</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="kwd" style="color: rgb(0, 0, 136);">void</span><span class="pln" style="color: rgb(0, 0, 0);"> run</span><span class="pun" style="color: rgb(102, 102, 0);">()</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pun" style="color: rgb(102, 102, 0);">{</span><span class="pln" style="color: rgb(0, 0, 0);">  </span><span class="com" style="color: rgb(136, 0, 0);">/**</span><span class="com" style="color: rgb(136, 0, 0);">   * 开始录像</span><span class="com" style="color: rgb(136, 0, 0);">   */</span><span class="pln" style="color: rgb(0, 0, 0);">  startRecord</span><span class="pun" style="color: rgb(102, 102, 0);">();</span><span class="pln" style="color: rgb(0, 0, 0);">  </span><span class="com" style="color: rgb(136, 0, 0);">/**</span><span class="com" style="color: rgb(136, 0, 0);">   * 启动定时器，到规定时间recordTime后执行停止录像任务</span><span class="com" style="color: rgb(136, 0, 0);">   */</span><span class="pln" style="color: rgb(0, 0, 0);">  </span><span class="typ" style="color: rgb(102, 0, 102);">Timer</span><span class="pln" style="color: rgb(0, 0, 0);"> timer </span><span class="pun" style="color: rgb(102, 102, 0);">=</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="kwd" style="color: rgb(0, 0, 136);">new</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="typ" style="color: rgb(102, 0, 102);">Timer</span><span class="pun" style="color: rgb(102, 102, 0);">();</span><span class="pln" style="color: rgb(0, 0, 0);">  </span><span style="color: rgb(255, 0, 0);"><span class="pln" style="color: rgb(0, 0, 0);">timer</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="pln" style="color: rgb(0, 0, 0);">schedule</span><span class="pun" style="color: rgb(102, 102, 0);">(</span><span class="kwd" style="color: rgb(0, 0, 136);">new</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="typ" style="color: rgb(102, 0, 102);">TimerThread</span><span class="pun" style="color: rgb(102, 102, 0);">(),</span><span class="pln" style="color: rgb(0, 0, 0);"> recordTime</span><span class="pun" style="color: rgb(102, 102, 0);">);</span></span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pun" style="color: rgb(102, 102, 0);">}</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="com" style="color: rgb(136, 0, 0);">/**</span><span class="com" style="color: rgb(136, 0, 0);">  * 获取摄像头实例对象</span><span class="com" style="color: rgb(136, 0, 0);">  * </span><span class="com" style="color: rgb(136, 0, 0);">  * @return</span><span class="com" style="color: rgb(136, 0, 0);">  */</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="kwd" style="color: rgb(0, 0, 136);">public</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="typ" style="color: rgb(102, 0, 102);">Camera</span><span class="pln" style="color: rgb(0, 0, 0);"> getCameraInstance</span><span class="pun" style="color: rgb(102, 102, 0);">()</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pun" style="color: rgb(102, 102, 0);">{</span><span class="pln" style="color: rgb(0, 0, 0);">  </span><span class="typ" style="color: rgb(102, 0, 102);">Camera</span><span class="pln" style="color: rgb(0, 0, 0);"> c </span><span class="pun" style="color: rgb(102, 102, 0);">=</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="kwd" style="color: rgb(0, 0, 136);">null</span><span class="pun" style="color: rgb(102, 102, 0);">;</span><span class="pln" style="color: rgb(0, 0, 0);">  </span><span class="kwd" style="color: rgb(0, 0, 136);">try</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pun" style="color: rgb(102, 102, 0);">{</span><span class="pln" style="color: rgb(0, 0, 0);">   c </span><span class="pun" style="color: rgb(102, 102, 0);">=</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="typ" style="color: rgb(102, 0, 102);">Camera</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="pln" style="color: rgb(0, 0, 0);">open</span><span class="pun" style="color: rgb(102, 102, 0);">();</span><span class="pln" style="color: rgb(0, 0, 0);">  </span><span class="pun" style="color: rgb(102, 102, 0);">}</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="kwd" style="color: rgb(0, 0, 136);">catch</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pun" style="color: rgb(102, 102, 0);">(</span><span class="typ" style="color: rgb(102, 0, 102);">Exception</span><span class="pln" style="color: rgb(0, 0, 0);"> e</span><span class="pun" style="color: rgb(102, 102, 0);">)</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pun" style="color: rgb(102, 102, 0);">{</span><span class="pln" style="color: rgb(0, 0, 0);">   </span><span class="com" style="color: rgb(136, 0, 0);">// 打开摄像头错误</span><span class="pln" style="color: rgb(0, 0, 0);">  </span><span class="typ" style="color: rgb(102, 0, 102);">Log</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="pln" style="color: rgb(0, 0, 0);">i</span><span class="pun" style="color: rgb(102, 102, 0);">(</span><span class="str" style="color: rgb(0, 136, 0);">"info"</span><span class="pun" style="color: rgb(102, 102, 0);">,</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="str" style="color: rgb(0, 136, 0);">"打开摄像头错误"</span><span class="pun" style="color: rgb(102, 102, 0);">);</span><span class="pln" style="color: rgb(0, 0, 0);">  </span><span class="pun" style="color: rgb(102, 102, 0);">}</span><span class="pln" style="color: rgb(0, 0, 0);">  </span><span class="kwd" style="color: rgb(0, 0, 136);">return</span><span class="pln" style="color: rgb(0, 0, 0);"> c</span><span class="pun" style="color: rgb(102, 102, 0);">;</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pun" style="color: rgb(102, 102, 0);">}</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="com" style="color: rgb(136, 0, 0);">/**</span><span class="com" style="color: rgb(136, 0, 0);">  * 开始录像</span><span class="com" style="color: rgb(136, 0, 0);">  */</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="kwd" style="color: rgb(0, 0, 136);">public</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="kwd" style="color: rgb(0, 0, 136);">void</span><span class="pln" style="color: rgb(0, 0, 0);"> startRecord</span><span class="pun" style="color: rgb(102, 102, 0);">()</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pun" style="color: rgb(102, 102, 0);">{</span><span class="pln" style="color: rgb(0, 0, 0);">  mediarecorder </span><span class="pun" style="color: rgb(102, 102, 0);">=</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="kwd" style="color: rgb(0, 0, 136);">new</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="typ" style="color: rgb(102, 0, 102);">MediaRecorder</span><span class="pun" style="color: rgb(102, 102, 0);">();</span><span class="com" style="color: rgb(136, 0, 0);">// 创建mediarecorder对象</span><span class="pln" style="color: rgb(0, 0, 0);">  mCamera </span><span class="pun" style="color: rgb(102, 102, 0);">=</span><span class="pln" style="color: rgb(0, 0, 0);"> getCameraInstance</span><span class="pun" style="color: rgb(102, 102, 0);">();</span><span class="pln" style="color: rgb(0, 0, 0);">  </span><span class="com" style="color: rgb(136, 0, 0);">// 解锁camera</span><span class="pln" style="color: rgb(0, 0, 0);">  mCamera</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="pln" style="color: rgb(0, 0, 0);">unlock</span><span class="pun" style="color: rgb(102, 102, 0);">();</span><span class="pln" style="color: rgb(0, 0, 0);">  mediarecorder</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="pln" style="color: rgb(0, 0, 0);">setCamera</span><span class="pun" style="color: rgb(102, 102, 0);">(</span><span class="pln" style="color: rgb(0, 0, 0);">mCamera</span><span class="pun" style="color: rgb(102, 102, 0);">);</span><span class="pln" style="color: rgb(0, 0, 0);">  </span><span class="com" style="color: rgb(136, 0, 0);">// 设置录制视频源为Camera(相机)</span><span class="pln" style="color: rgb(0, 0, 0);">  mediarecorder</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="pln" style="color: rgb(0, 0, 0);">setAudioSource</span><span class="pun" style="color: rgb(102, 102, 0);">(</span><span class="typ" style="color: rgb(102, 0, 102);">MediaRecorder</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="typ" style="color: rgb(102, 0, 102);">AudioSource</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="pln" style="color: rgb(0, 0, 0);">CAMCORDER</span><span class="pun" style="color: rgb(102, 102, 0);">);</span><span class="pln" style="color: rgb(0, 0, 0);">  mediarecorder</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="pln" style="color: rgb(0, 0, 0);">setVideoSource</span><span class="pun" style="color: rgb(102, 102, 0);">(</span><span class="typ" style="color: rgb(102, 0, 102);">MediaRecorder</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="typ" style="color: rgb(102, 0, 102);">VideoSource</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="pln" style="color: rgb(0, 0, 0);">CAMERA</span><span class="pun" style="color: rgb(102, 102, 0);">);</span><span class="pln" style="color: rgb(0, 0, 0);">  </span><span class="com" style="color: rgb(136, 0, 0);">// 设置录制文件质量，格式，分辨率之类，这个全部包括了</span><span class="pln" style="color: rgb(0, 0, 0);">  </span><span style="color: rgb(255, 0, 0);"><span class="pln" style="color: rgb(0, 0, 0);">mediarecorder</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="pln" style="color: rgb(0, 0, 0);">setProfile</span><span class="pun" style="color: rgb(102, 102, 0);">(</span><span class="typ" style="color: rgb(102, 0, 102);">CamcorderProfile</span><span class="pln" style="color: rgb(0, 0, 0);">    </span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="kwd" style="color: rgb(0, 0, 136);">get</span><span class="pun" style="color: rgb(102, 102, 0);">(</span><span class="typ" style="color: rgb(102, 0, 102);">CamcorderProfile</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="pln" style="color: rgb(0, 0, 0);">QUALITY_LOW</span><span class="pun" style="color: rgb(102, 102, 0);">));</span></span><span class="pln" style="color: rgb(0, 0, 0);">  mediarecorder</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="pln" style="color: rgb(0, 0, 0);">setPreviewDisplay</span><span class="pun" style="color: rgb(102, 102, 0);">(</span><span class="pln" style="color: rgb(0, 0, 0);">surfaceHolder</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="pln" style="color: rgb(0, 0, 0);">getSurface</span><span class="pun" style="color: rgb(102, 102, 0);">());</span><span class="pln" style="color: rgb(0, 0, 0);">  </span><span class="com" style="color: rgb(136, 0, 0);">// 设置视频文件输出的路径</span><span class="pln" style="color: rgb(0, 0, 0);">  mediarecorder</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="pln" style="color: rgb(0, 0, 0);">setOutputFile</span><span class="pun" style="color: rgb(102, 102, 0);">(</span><span class="str" style="color: rgb(0, 136, 0);">"/sdcard/sForm.3gp"</span><span class="pun" style="color: rgb(102, 102, 0);">);</span><span class="pln" style="color: rgb(0, 0, 0);">  </span><span class="kwd" style="color: rgb(0, 0, 136);">try</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pun" style="color: rgb(102, 102, 0);">{</span><span class="pln" style="color: rgb(0, 0, 0);">   </span><span class="com" style="color: rgb(136, 0, 0);">// 准备录制</span><span class="pln" style="color: rgb(0, 0, 0);">   mediarecorder</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="pln" style="color: rgb(0, 0, 0);">prepare</span><span class="pun" style="color: rgb(102, 102, 0);">();</span><span class="pln" style="color: rgb(0, 0, 0);">   </span><span class="com" style="color: rgb(136, 0, 0);">// 开始录制</span><span class="pln" style="color: rgb(0, 0, 0);">   mediarecorder</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="pln" style="color: rgb(0, 0, 0);">start</span><span class="pun" style="color: rgb(102, 102, 0);">();</span><span class="pln" style="color: rgb(0, 0, 0);">  </span><span class="pun" style="color: rgb(102, 102, 0);">}</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="kwd" style="color: rgb(0, 0, 136);">catch</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pun" style="color: rgb(102, 102, 0);">(</span><span class="typ" style="color: rgb(102, 0, 102);">IllegalStateException</span><span class="pln" style="color: rgb(0, 0, 0);"> e</span><span class="pun" style="color: rgb(102, 102, 0);">)</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pun" style="color: rgb(102, 102, 0);">{</span><span class="pln" style="color: rgb(0, 0, 0);">   </span><span class="com" style="color: rgb(136, 0, 0);">// TODO Auto-generated catch block</span><span class="pln" style="color: rgb(0, 0, 0);">   e</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="pln" style="color: rgb(0, 0, 0);">printStackTrace</span><span class="pun" style="color: rgb(102, 102, 0);">();</span><span class="pln" style="color: rgb(0, 0, 0);">  </span><span class="pun" style="color: rgb(102, 102, 0);">}</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="kwd" style="color: rgb(0, 0, 136);">catch</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pun" style="color: rgb(102, 102, 0);">(</span><span class="typ" style="color: rgb(102, 0, 102);">IOException</span><span class="pln" style="color: rgb(0, 0, 0);"> e</span><span class="pun" style="color: rgb(102, 102, 0);">)</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pun" style="color: rgb(102, 102, 0);">{</span><span class="pln" style="color: rgb(0, 0, 0);">   </span><span class="com" style="color: rgb(136, 0, 0);">// TODO Auto-generated catch block</span><span class="pln" style="color: rgb(0, 0, 0);">   e</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="pln" style="color: rgb(0, 0, 0);">printStackTrace</span><span class="pun" style="color: rgb(102, 102, 0);">();</span><span class="pln" style="color: rgb(0, 0, 0);">  </span><span class="pun" style="color: rgb(102, 102, 0);">}</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pun" style="color: rgb(102, 102, 0);">}</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="com" style="color: rgb(136, 0, 0);">/**</span><span class="com" style="color: rgb(136, 0, 0);">  * 停止录制</span><span class="com" style="color: rgb(136, 0, 0);">  */</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="kwd" style="color: rgb(0, 0, 136);">public</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="kwd" style="color: rgb(0, 0, 136);">void</span><span class="pln" style="color: rgb(0, 0, 0);"> stopRecord</span><span class="pun" style="color: rgb(102, 102, 0);">()</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pun" style="color: rgb(102, 102, 0);">{</span><span class="pln" style="color: rgb(0, 0, 0);">  </span><span class="kwd" style="color: rgb(0, 0, 136);">if</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pun" style="color: rgb(102, 102, 0);">(</span><span class="pln" style="color: rgb(0, 0, 0);">mediarecorder </span><span class="pun" style="color: rgb(102, 102, 0);">!=</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="kwd" style="color: rgb(0, 0, 136);">null</span><span class="pun" style="color: rgb(102, 102, 0);">)</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pun" style="color: rgb(102, 102, 0);">{</span><span class="pln" style="color: rgb(0, 0, 0);">   </span><span class="com" style="color: rgb(136, 0, 0);">// 停止录制</span><span class="pln" style="color: rgb(0, 0, 0);">   mediarecorder</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="pln" style="color: rgb(0, 0, 0);">stop</span><span class="pun" style="color: rgb(102, 102, 0);">();</span><span class="pln" style="color: rgb(0, 0, 0);">  </span><span class="pln" style="color: rgb(0, 0, 0);">   </span><span class="com" style="color: rgb(136, 0, 0);">// 释放资源</span><span class="pln" style="color: rgb(0, 0, 0);">   mediarecorder</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="pln" style="color: rgb(0, 0, 0);">release</span><span class="pun" style="color: rgb(102, 102, 0);">();</span><span class="pln" style="color: rgb(0, 0, 0);">   mediarecorder </span><span class="pun" style="color: rgb(102, 102, 0);">=</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="kwd" style="color: rgb(0, 0, 136);">null</span><span class="pun" style="color: rgb(102, 102, 0);">;</span><span class="pln" style="color: rgb(0, 0, 0);">   </span><span class="kwd" style="color: rgb(0, 0, 136);">if</span><span class="pun" style="color: rgb(102, 102, 0);">(</span><span class="pln" style="color: rgb(0, 0, 0);">mCamera</span><span class="pun" style="color: rgb(102, 102, 0);">!=</span><span class="kwd" style="color: rgb(0, 0, 136);">null</span><span class="pun" style="color: rgb(102, 102, 0);">){</span><span class="pln" style="color: rgb(0, 0, 0);">    mCamera</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="pln" style="color: rgb(0, 0, 0);">release</span><span class="pun" style="color: rgb(102, 102, 0);">();</span><span class="pln" style="color: rgb(0, 0, 0);">    mCamera </span><span class="pun" style="color: rgb(102, 102, 0);">=</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="kwd" style="color: rgb(0, 0, 136);">null</span><span class="pun" style="color: rgb(102, 102, 0);">;</span><span class="pln" style="color: rgb(0, 0, 0);">   </span><span class="pun" style="color: rgb(102, 102, 0);">}</span><span class="pln" style="color: rgb(0, 0, 0);">   </span><span class="pln" style="color: rgb(0, 0, 0);">  </span><span class="pun" style="color: rgb(102, 102, 0);">}</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pun" style="color: rgb(102, 102, 0);">}</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="com" style="color: rgb(136, 0, 0);">/**</span><span class="com" style="color: rgb(136, 0, 0);">  * 定时器</span><span class="com" style="color: rgb(136, 0, 0);">  * @author bcaiw</span><span class="com" style="color: rgb(136, 0, 0);">  *</span><span class="com" style="color: rgb(136, 0, 0);">  */</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="kwd" style="color: rgb(0, 0, 136);">class</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="typ" style="color: rgb(102, 0, 102);">TimerThread</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="kwd" style="color: rgb(0, 0, 136);">extends</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="typ" style="color: rgb(102, 0, 102);">TimerTask</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pun" style="color: rgb(102, 102, 0);">{</span><span class="pln" style="color: rgb(0, 0, 0);">  </span><span class="com" style="color: rgb(136, 0, 0);">/**</span><span class="com" style="color: rgb(136, 0, 0);">   * 停止录像</span><span class="com" style="color: rgb(136, 0, 0);">   */</span><span class="pln" style="color: rgb(0, 0, 0);">  </span><span class="lit" style="color: rgb(0, 102, 102);">@Override</span><span class="pln" style="color: rgb(0, 0, 0);">  </span><span class="kwd" style="color: rgb(0, 0, 136);">public</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="kwd" style="color: rgb(0, 0, 136);">void</span><span class="pln" style="color: rgb(0, 0, 0);"> run</span><span class="pun" style="color: rgb(102, 102, 0);">()</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pun" style="color: rgb(102, 102, 0);">{</span><span class="pln" style="color: rgb(0, 0, 0);">   </span><span style="color: rgb(255, 0, 0);"><span class="pln" style="color: rgb(0, 0, 0);">stopRecord</span><span class="pun" style="color: rgb(102, 102, 0);">();</span><span class="pln" style="color: rgb(0, 0, 0);">   </span><span class="kwd" style="color: rgb(0, 0, 136);">this</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="pln" style="color: rgb(0, 0, 0);">cancel</span><span class="pun" style="color: rgb(102, 102, 0);">();</span></span><span class="pln" style="color: rgb(0, 0, 0);">  </span><span class="pun" style="color: rgb(102, 102, 0);">}</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pun" style="color: rgb(102, 102, 0);">}</span><span class="pun" style="color: rgb(102, 102, 0);">}</span></p><div></div>

3.main.xml。

<p style="margin-top: 0px; margin-bottom: 10px; padding-top: 0px; padding-bottom: 0px;"><span class="tag" style="color: rgb(0, 0, 136);"><LinearLayout</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="atn" style="color: rgb(102, 0, 102);">xmlns:android</span><span class="pun" style="color: rgb(102, 102, 0);">=</span><span class="atv" style="color: rgb(0, 136, 0);">"http://schemas.android.com/apk/res/android"</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pln" style="color: rgb(0, 0, 0);">    </span><span class="atn" style="color: rgb(102, 0, 102);">android:layout_width</span><span class="pun" style="color: rgb(102, 102, 0);">=</span><span class="atv" style="color: rgb(0, 136, 0);">"fill_parent"</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pln" style="color: rgb(0, 0, 0);">    </span><span class="atn" style="color: rgb(102, 0, 102);">android:layout_height</span><span class="pun" style="color: rgb(102, 102, 0);">=</span><span class="atv" style="color: rgb(0, 136, 0);">"fill_parent"</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pln" style="color: rgb(0, 0, 0);">    </span><span class="atn" style="color: rgb(102, 0, 102);">android:orientation</span><span class="pun" style="color: rgb(102, 102, 0);">=</span><span class="atv" style="color: rgb(0, 136, 0);">"horizontal"</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="tag" style="color: rgb(0, 0, 136);">></span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pln" style="color: rgb(0, 0, 0);">    </span><span class="tag" style="color: rgb(0, 0, 136);"><LinearLayout</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pln" style="color: rgb(0, 0, 0);">        </span><span class="atn" style="color: rgb(102, 0, 102);">android:layout_width</span><span class="pun" style="color: rgb(102, 102, 0);">=</span><span class="atv" style="color: rgb(0, 136, 0);">"fill_parent"</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pln" style="color: rgb(0, 0, 0);">        </span><span class="atn" style="color: rgb(102, 0, 102);">android:layout_height</span><span class="pun" style="color: rgb(102, 102, 0);">=</span><span class="atv" style="color: rgb(0, 136, 0);">"fill_parent"</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pln" style="color: rgb(0, 0, 0);">        </span><span class="atn" style="color: rgb(102, 0, 102);">android:layout_weight</span><span class="pun" style="color: rgb(102, 102, 0);">=</span><span class="atv" style="color: rgb(0, 136, 0);">"1"</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pln" style="color: rgb(0, 0, 0);">       </span><span style="color: rgb(255, 0, 0);"><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="atn" style="color: rgb(102, 0, 102);">android:id</span><span class="pun" style="color: rgb(102, 102, 0);">=</span><span class="atv" style="color: rgb(0, 136, 0);">"@+id/lay"</span></span><span class="tag" style="color: rgb(0, 0, 136);">></span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pln" style="color: rgb(0, 0, 0);">        </span><span class="tag" style="color: rgb(0, 0, 136);"><SurfaceView</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pln" style="color: rgb(0, 0, 0);">            </span><span class="atn" style="color: rgb(102, 0, 102);">android:id</span><span class="pun" style="color: rgb(102, 102, 0);">=</span><span class="atv" style="color: rgb(0, 136, 0);">"@+id/surfaceview"</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pln" style="color: rgb(0, 0, 0);">            </span><span class="atn" style="color: rgb(102, 0, 102);">android:layout_width</span><span class="pun" style="color: rgb(102, 102, 0);">=</span><span class="atv" style="color: rgb(0, 136, 0);">"fill_parent"</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pln" style="color: rgb(0, 0, 0);">            </span><span class="atn" style="color: rgb(102, 0, 102);">android:layout_height</span><span class="pun" style="color: rgb(102, 102, 0);">=</span><span class="atv" style="color: rgb(0, 136, 0);">"fill_parent"</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="tag" style="color: rgb(0, 0, 136);">/></span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pln" style="color: rgb(0, 0, 0);">    </span><span class="tag" style="color: rgb(0, 0, 136);"></LinearLayout></span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pln" style="color: rgb(0, 0, 0);">   </span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="tag" style="color: rgb(0, 0, 136);"></LinearLayout></span><span class="pln" style="color: rgb(0, 0, 0);"> </span></p>

demo简单的实现了一个大体过程。分析下：

a.activity里面提供surfaceview，但是其本身不允许设置隐藏的，可能api他本身有针对这个控件的检查机制，那么试想把他的父控件设置成invisable的，他不会连父控件也检查吧。将ld为lay的linearlayout控件设置成INVISABLE，事实证明录像的时候，预览不可见了，可行。

b.录像时必须要surfaceview对象，而线程是没有界面元素的，因此，实例化线程对象的时候，将surfaceview以及holder对象传递进来。

c.由于是后台的，因此需要有时间限制，时间一到，自动停止。定义一个定时器，Timer子类,重写run方法就可以了。

d.mediarecorder.setProfile(CamcorderProfile.get(CamcorderProfile.QUALITY_LOW));这一句顶n句，包括了设置视频文件的格式，分辨率，码率等等。当然，如果想要自由一点，还是一个一个设。

这样录制隐藏视频的两大条件：【不显示界面】、【到时间自动停止】都已具备。少年们，可以搞起。

但是这还仅仅是个demo，一个demo而已。并不能马上结合到现有的项目中来，结合之前，且来分析分析它所缺的：

a.缺少交互。虽然是个线程单独录制，但是万一录制的过程中需要停下来怎么办？

b.启动和关闭的声音没解决。这个真心不知道怎么弄。

c.没有控制，主线程不知道你有没有在规定的时间内录制完，就是不知道你这个线程的状态，进而就不知道录像设备的到底是不是空着的，如果不是空着的，又是被谁用的。

d.异常处理。各种异常了，怎么办。

e.和其他如录音、拍照冲突了如何解决？经过实验，三者是不同共存的，就是说同时有录音和录像的时候，录像文件是损坏的。同时有录像和拍照的时候，拍照程序一启动，就说设备故障。这中间该如何协调处理？

目前能想到所可能面临的就这些，那么下篇分析引进多线程机制，主从线程直接相互通信来传递消息，就是我了解你在想什么，你也了解我想干什么。还有就是如何解决照相和视频冲突的问题。

后记：

技术这个，是越往下做，越觉得自己不懂的是真多。哈哈哈，今天看见一句话，傻逼的坚持也有牛逼的一天。哈哈哈，唯有不断前进。