Android简单网络视频播放器

播放需要调用service，在此，只是简单梳理播放流程。

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical"    tools:context=".MainActivity" >    <EditText        android:id="@+id/et_path"        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:hint="请输入要播放文件的路径" />    <LinearLayout        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:orientation="horizontal" >        <Button            android:id="@+id/bt_play"            android:layout_width="0dip"            android:layout_height="wrap_content"            android:layout_weight="1"            android:onClick="play"            android:text="播放" />        <Button            android:id="@+id/bt_pause"            android:layout_width="0dip"            android:layout_height="wrap_content"            android:layout_weight="1"            android:onClick="pause"            android:text="暂停" />        <Button            android:id="@+id/bt_stop"            android:layout_width="0dip"            android:layout_height="wrap_content"            android:layout_weight="1"            android:onClick="stop"            android:text="停止" />        <Button            android:id="@+id/bt_replay"            android:layout_width="0dip"            android:layout_height="wrap_content"            android:layout_weight="1"            android:onClick="replay"            android:text="重播" />    </LinearLayout>    <SurfaceView        android:id="@+id/sv"        android:layout_width="fill_parent"        android:layout_height="fill_parent" /></LinearLayout>

public class MainActivity extends Activity {    private EditText et_path;    private MediaPlayer mediaPlayer;    private Button bt_play,bt_pause,bt_stop,bt_replay;    private SurfaceView sv;    private SurfaceHolder holder;    private int position;    private String filepath;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        et_path = (EditText) findViewById(R.id.et_path);        bt_play = (Button) findViewById(R.id.bt_play);        bt_pause = (Button) findViewById(R.id.bt_pause);        bt_stop = (Button) findViewById(R.id.bt_stop);        bt_replay = (Button) findViewById(R.id.bt_replay);        //得到surfaceview        sv = (SurfaceView) findViewById(R.id.sv);        //得到显示界面内容的容器        holder = sv.getHolder();        //在低版本模拟器上运行记得加上下面的参数。不自己维护双缓冲区，而是等待多媒体播放框架主动的推送数据。        holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);        holder.addCallback(new Callback() {            @Override            public void surfaceDestroyed(SurfaceHolder holder) {                System.out.println("destoryed");                if(mediaPlayer!=null&&mediaPlayer.isPlaying()){                    position = mediaPlayer.getCurrentPosition();                    mediaPlayer.stop();                    mediaPlayer.release();                    mediaPlayer = null;                }            }            @Override            public void surfaceCreated(SurfaceHolder holder) {                System.out.println("created");                if(position>0){//记录的有播放进度。                    try {                        mediaPlayer = new MediaPlayer();                        mediaPlayer.setDataSource(filepath);//设置播放的数据源。                        mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);                        mediaPlayer.setDisplay(holder);                        mediaPlayer.prepare();//准备开始播放 播放的逻辑是c代码在新的线程里面执行。                        mediaPlayer.start();                        mediaPlayer.seekTo(position);                        bt_play.setEnabled(false);                        mediaPlayer.setOnCompletionListener(new OnCompletionListener() {                            @Override                            public void onCompletion(MediaPlayer mp) {                                bt_play.setEnabled(true);                            }                        });                    } catch (IOException e) {                        e.printStackTrace();                    }                }            }            @Override            public void surfaceChanged(SurfaceHolder holder, int format, int width,                    int height) {                System.out.println("changed");            }        });    }    /**     * 播放     * @param view     */    public void play(View view) {        filepath = et_path.getText().toString().trim();        //File file = new File(filepath);        if(filepath.startsWith("http://")){            try {                mediaPlayer = new MediaPlayer();                mediaPlayer.setDataSource(filepath);//设置播放的数据源。                mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);                mediaPlayer.setDisplay(holder);                mediaPlayer.prepare();//准备开始播放 播放的逻辑是c代码在新的线程里面执行。                mediaPlayer.start();                bt_play.setEnabled(false);                mediaPlayer.setOnCompletionListener(new OnCompletionListener() {                    @Override                    public void onCompletion(MediaPlayer mp) {                        bt_play.setEnabled(true);                    }                });            } catch (Exception e) {                e.printStackTrace();                Toast.makeText(this, "播放失败", 0).show();            }        }else{            Toast.makeText(this, "文件不存在，请检查文件的路径", 0).show();        }    }    /**     * 暂停     * @param view     */    public void pause(View view) {        if("继续".equals(bt_pause.getText().toString())){            mediaPlayer.start();            bt_pause.setText("暂停");            return;        }        if(mediaPlayer!=null&&mediaPlayer.isPlaying()){            mediaPlayer.pause();            bt_pause.setText("继续");        }    }    /**     * 停止     * @param view     */    public void stop(View view) {        if(mediaPlayer!=null&&mediaPlayer.isPlaying()){            mediaPlayer.stop();            mediaPlayer.release();            mediaPlayer = null;        }        bt_pause.setText("暂停");        bt_play.setEnabled(true);    }    /**     * 重播     * @param view     */    public void replay(View view) {        if(mediaPlayer!=null&&mediaPlayer.isPlaying()){            mediaPlayer.seekTo(0);        }else{            play(view);        }        bt_pause.setText("暂停");    }}

参考：
Android音频、视频