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<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#FFFFFF"
>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/filename"
/>
<EditText
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="@+id/filename"
/>
<LinearLayout
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
>
<ImageButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/play"
android:id="@+id/playbutton"
android:onClick="mediaplay"
/>
<ImageButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/pause"
android:id="@+id/pausebutton"
android:onClick="mediaplay"
/>
<ImageButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/reset"
android:id="@+id/resetbutton"
android:onClick="mediaplay"
/>
<ImageButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/stop"
android:id="@+id/stopbutton"
android:onClick="mediaplay"
/>
</LinearLayout>
<SurfaceView
android:layout_width="fill_parent"
android:layout_height="240dp"
android:id="@+id/surfaceView"
/>
</LinearLayout>
public class MainActivity extends Activity {
private EditText nameText;
private String path;
private MediaPlayer mediaPlayer;
private SurfaceView surfaceView;
private boolean pause;
private int position;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mediaPlayer = new MediaPlayer();
nameText = (EditText) this.findViewById(R.id.filename);
surfaceView = (SurfaceView) this.findViewById(R.id.surfaceView);
//把输送给surfaceView的视频画面，直接显示到屏幕上,不要维持它自身的缓冲区
surfaceView.getHolder().setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
surfaceView.getHolder().setFixedSize(176, 144);
surfaceView.getHolder().setKeepScreenOn(true);
surfaceView.getHolder().addCallback(new SurfaceCallback());
}
private final class SurfaceCallback implements Callback{
public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
}
public void surfaceCreated(SurfaceHolder holder) {
if(position>0 && path!=null){
play(position);
position = 0;
}
}
public void surfaceDestroyed(SurfaceHolder holder) {
if(mediaPlayer.isPlaying()){
position = mediaPlayer.getCurrentPosition();
mediaPlayer.stop();
}
}
}
@Override
protected void onDestroy() {
mediaPlayer.release();
mediaPlayer = null;
super.onDestroy();
}
public void mediaplay(View v){
switch (v.getId()) {
case R.id.playbutton:
String filename = nameText.getText().toString();
if(filename.startsWith("http")){
path = filename;
play(0);
}else{
File file = new File(Environment.getExternalStorageDirectory(), filename);
if(file.exists()){
path = file.getAbsolutePath();
play(0);
}else{
path = null;
Toast.makeText(this, R.string.filenoexsit, 1).show();
}
}
break;
case R.id.pausebutton:
if(mediaPlayer.isPlaying()){
mediaPlayer.pause();
pause = true;
}else{
if(pause){
mediaPlayer.start();
pause = false;
}
}
break;
case R.id.resetbutton:
if(mediaPlayer.isPlaying()){
mediaPlayer.seekTo(0);
}else{
if(path!=null){
play(0);
}
}
break;
case R.id.stopbutton:
if(mediaPlayer.isPlaying()){
mediaPlayer.stop();
}
break;
}
}
private void play(int position) {
try {
mediaPlayer.reset();
mediaPlayer.setDataSource(path);
mediaPlayer.setDisplay(surfaceView.getHolder());
mediaPlayer.prepare();//缓冲
mediaPlayer.setOnPreparedListener(new PrepareListener(position));
} catch (Exception e) {
e.printStackTrace();
}
}
private final class PrepareListener implements OnPreparedListener{
private int position;
public PrepareListener(int position) {
this.position = position;
}
public void onPrepared(MediaPlayer mp) {
mediaPlayer.start();//播放视频
if(position>0) mediaPlayer.seekTo(position);
}
}
}
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