Android 开发视频播放器源码代码逻辑清晰.zip

package cn.itcast.video; import android.app.Activity; import android.media.AudioManager; import android.media.MediaPlayer; import android.os.Bundle; import android.util.Log; import android.view.SurfaceHolder; import android.view.SurfaceView; import android.view.View; import android.widget.EditText; import android.widget.ImageButton; public class VideoActivity extends Activity { private static final String TAG = "VideoActivity"; private EditText filenameText; private SurfaceView surfaceView; private MediaPlayer mediaPlayer; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); ButtonClickListener listener = new ButtonClickListener(); ImageButton playButton =(ImageButton) this.findViewById(R.id.play); playButton.setOnClickListener(listener); ImageButton pauseButton =(ImageButton) this.findViewById(R.id.pause); pauseButton.setOnClickListener(listener); ImageButton resetButton =(ImageButton) this.findViewById(R.id.reset); resetButton.setOnClickListener(listener); ImageButton stopButton =(ImageButton) this.findViewById(R.id.stop); stopButton.setOnClickListener(listener); filenameText =(EditText) this.findViewById(R.id.filename); surfaceView =(SurfaceView) this.findViewById(R.id.surfaceView); /*下面设置Surface不维护自己的缓冲区，而是等待屏幕的渲染引擎将内容推送到用户面前*/ surfaceView.getHolder().setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); surfaceView.getHolder().setFixedSize(176, 144); //设置分辨率 mediaPlayer = new MediaPlayer(); } @Override protected void onDestroy() { if(mediaPlayer.isPlaying()) mediaPlayer.stop(); mediaPlayer.release(); super.onDestroy(); } @Override protected void onPause() { if(mediaPlayer.isPlaying()) mediaPlayer.pause(); super.onPause(); } @Override protected void onResume() { if(!mediaPlayer.isPlaying()) mediaPlayer.start(); super.onResume(); } private class ButtonClickListener implements View.OnClickListener{ @Override public void onClick(View v) { try { String filename = filenameText.getText().toString(); switch (v.getId()) { case R.id.play://来自播放按钮 mediaPlayer.reset(); mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC); mediaPlayer.setDataSource("/sdcard/"+ filename);//设置需要播放的视频 mediaPlayer.setDisplay(surfaceView.getHolder());//把视频画面输出到SurfaceView mediaPlayer.prepare(); mediaPlayer.start(); break; case R.id.pause://来自暂停按钮 if(mediaPlayer.isPlaying()){ mediaPlayer.pause(); }else{ mediaPlayer.start(); } break; case R.id.reset://来自重新播放按钮 if(!mediaPlayer.isPlaying()){ mediaPlayer.reset(); mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC); mediaPlayer.setDataSource("/sdcard/"+ filename);//设置需要播放的视频 mediaPlayer.setDisplay(surfaceView.getHolder());//把视频画面输出到SurfaceView mediaPlayer.prepare(); mediaPlayer.start(); } mediaPlayer.seekTo(0); break; case R.id.stop://来自停止按钮 if(mediaPlayer.isPlaying()){ mediaPlayer.stop(); } break; } } catch (Exception e) { Log.e(TAG, e.toString()); } } } }