Android 简单视频播放器（破烂版，后续更新）
16lz
2021-01-23
Android 简单视频播放器（破烂版，后续更新）
activity_main.xml
<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" android:paddingBottom="@dimen/activity_vertical_margin" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin" tools:context=".MainActivity" > <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="文件名称" /> <EditText android:id="@+id/edit" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="oppo.mp4" /> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="horizontal" > <ImageButton android:id="@+id/btn_play" android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@drawable/play" /> <ImageButton android:id="@+id/btn_pause" android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@drawable/pause" /> <ImageButton android:id="@+id/btn_stop" android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@drawable/stop" /> <ImageButton android:id="@+id/btn_reset" android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@drawable/reset" /> LinearLayout> <SurfaceView android:id="@+id/sv_video" android:layout_width="match_parent" android:layout_height="240dp" />LinearLayout>MainActivity.java
public class MainActivity extends Activity { private EditText edit; private ImageButton btn_play; private ImageButton btn_pause; private ImageButton btn_stop; private ImageButton btn_reset; private SurfaceView sv; private MediaPlayer mediaPlayer; private String filename; private int position; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); //init edit = (EditText) findViewById(R.id.edit); btn_play = (ImageButton) findViewById(R.id.btn_play); btn_pause = (ImageButton) findViewById(R.id.btn_pause); btn_stop = (ImageButton) findViewById(R.id.btn_stop); btn_reset = (ImageButton) findViewById(R.id.btn_reset); sv = (SurfaceView) findViewById(R.id.sv_video); sv.getHolder().setFixedSize(176, 144); sv.getHolder().setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); sv.getHolder().addCallback(new SurfaceCallback()); BtnListener btnListener = new BtnListener(); mediaPlayer = new MediaPlayer(); btn_play.setOnClickListener(btnListener); btn_pause.setOnClickListener(btnListener); btn_stop.setOnClickListener(btnListener); btn_reset.setOnClickListener(btnListener); } private final class SurfaceCallback implements SurfaceHolder.Callback { @Override public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) { // TODO Auto-generated method stub } @Override public void surfaceCreated(SurfaceHolder holder) { if(position > 0 && filename != null) { try { play(); mediaPlayer.seekTo(position); position = 0; } catch (Exception e) { Log.i("VedioPlayer", e.toString()); } } } @Override public void surfaceDestroyed(SurfaceHolder holder) { // TODO Auto-generated method stub if(mediaPlayer.isPlaying()) { position = mediaPlayer.getCurrentPosition(); mediaPlayer.stop(); } } } @Override protected void onDestroy() { super.onDestroy(); mediaPlayer.release(); } @Override protected void onRestoreInstanceState(Bundle savedInstanceState) { super.onRestoreInstanceState(savedInstanceState); this.filename = savedInstanceState.getString("filename"); this.position = savedInstanceState.getInt("position"); Log.i("MediaPlayer", "onRestoreInstanceState"); } @Override protected void onSaveInstanceState(Bundle outState) { super.onSaveInstanceState(outState); outState.putString("filename", filename); outState.putInt("position", position); Log.i("VedioPlayer", "onSaveInstanceState"); } private final class BtnListener implements OnClickListener { @Override public void onClick(View v) { if(!Environment.getExternalStorageState() .equals(Environment.MEDIA_MOUNTED)) { Toast.makeText(MainActivity.this, "SD卡还未准备好", 1000).show(); return; } filename = edit.getText().toString(); ImageButton btn = (ImageButton) v; try { switch (btn.getId()) { case R.id.btn_play: play(); break; case R.id.btn_pause: if(mediaPlayer.isPlaying()) { mediaPlayer.pause(); btn.setImageResource(R.drawable.play); } else { mediaPlayer.start(); btn.setImageResource(R.drawable.pause); } break; case R.id.btn_stop: if (mediaPlayer.isPlaying()) { mediaPlayer.stop(); } break; case R.id.btn_reset: if(mediaPlayer.isPlaying()) { mediaPlayer.seekTo(0); } else { play(); } break; default: break; } } catch (Exception e) { Log.i("VedioPlayer", e.toString()); } } } private void play() throws IOException { File audioFile = new File( Environment.getExternalStorageDirectory(), filename); mediaPlayer.reset(); mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC); mediaPlayer.setDisplay(sv.getHolder()); mediaPlayer.setDataSource(audioFile.getAbsolutePath()); mediaPlayer.prepare(); mediaPlayer.start(); }}