简易的自定义录像机

来源：互联网发布：Linux持续ping 编辑：程序博客网时间：2024/04/28 00:09

录像机和照相机的原理差不多，都是需要设置一系列参数具体看代码，添加权限等

简易的布局文件

   android:layout_width="match_parent"        android:layout_height="200dp"        android:id="@+id/sv_surfaceView_video"/>        <Button            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:id="@+id/bt_button_start"            android:text="开始"/>        <Button            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:id="@+id/bt_button_stop"            android:text="停止"/>

简易的主要代码

public class MediaVideo extends AppCompatActivity {    private SurfaceView sv_surfaceView_video;    private Button bt_button_start;    private Button bt_button_stop;    private MediaRecorder mediaRecorder;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_media_video);        sv_surfaceView_video = (SurfaceView) findViewById(R.id.sv_surfaceView_video);        bt_button_start = (Button) findViewById(R.id.bt_button_start);        bt_button_stop = (Button) findViewById(R.id.bt_button_stop);        //实例化媒体播放器        mediaRecorder = new MediaRecorder();        bt_button_start.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View view) {                mediaRecorder.reset();                mediaRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);                mediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);                //设置格式                mediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);                mediaRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.H263);                mediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);                //设置保存路径                mediaRecorder.setOutputFile("/mnt/sdcard/G150820_" + System.currentTimeMillis() + ".mp4");                mediaRecorder.setPreviewDisplay(sv_surfaceView_video.getHolder().getSurface());                try {                    mediaRecorder.prepare();                    mediaRecorder.start();                } catch (IOException e) {                    e.printStackTrace();                }            }        });        bt_button_stop.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View view) {                if (mediaRecorder != null) {                    mediaRecorder.stop();                    mediaRecorder.release();                    mediaRecorder = null;                }            }        });    }}

还要配置权限

 <!-- 写入内存卡 -->    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />    <!-- 打开相机的权限 -->    <uses-permission android:name="android.permission.CAMERA" />    <uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS" />

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