package cn.zengfansheng.videoplay;
import android.app.Activity;
import android.media.AudioManager;
import android.media.MediaPlayer;
import android.media.MediaPlayer.OnPreparedListener;
import android.net.Uri;
import android.os.Bundle;
import android.view.SurfaceHolder;
import android.view.SurfaceHolder.Callback;
import android.view.SurfaceView;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import cn.zengfansheng.onlinevideoplay.R;
public class MainActivity extends Activity {
private EditText et_path;
private Button bt_pause;
private SurfaceView sv;
private MediaPlayer mediaPlayer;
private int currentPosition;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
et_path = (EditText) this.findViewById(R.id.et_path);
bt_pause = (Button) this.findViewById(R.id.bt_pause);
sv = (SurfaceView) this.findViewById(R.id.sv);
// android4.0以下要加上，4.0后废弃了，告诉surfaceview 不要自己维护缓冲区 而是 等待多媒体播放器的框架 把数据填充过来
//sv.getHolder().setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);// 加上更好的兼容前面的低版本
// 2.3 2.2模拟器有bug,播放不了视频， 需要用1.6模拟器或者真机
// TODO c、为SurfaceHolder增加回调函数,//关心surfaceview holder的存活周期
sv.getHolder().addCallback(new Callback() {
@Override
public void surfaceDestroyed(SurfaceHolder holder) {
if (mediaPlayer != null && mediaPlayer.isPlaying()) {
currentPosition = mediaPlayer.getCurrentPosition();
mediaPlayer.stop();
mediaPlayer.release();
mediaPlayer = null;
}
System.out.println("holder 销毁了。。。播放位置：" + currentPosition);
}
@Override
public void surfaceCreated(SurfaceHolder holder) {
System.out.println("holder 创建了。。。");
if (currentPosition > 0) {
try {
String videoPath = et_path.getText().toString().trim();
mediaPlayer = new MediaPlayer();
mediaPlayer
.setAudioStreamType(AudioManager.STREAM_MUSIC);
mediaPlayer.setDataSource(getApplicationContext(),
Uri.parse(videoPath));
mediaPlayer.setDisplay(sv.getHolder());
mediaPlayer.prepareAsync();
mediaPlayer.setOnPreparedListener(new OnPreparedListener() {
@Override
public void onPrepared(MediaPlayer mp) {
System.out.println("从"+ currentPosition + "位置开始播放");
mediaPlayer.seekTo(currentPosition);
mediaPlayer.start();
}
});
} catch (Exception e) {
e.printStackTrace();
}
}
}
@Override
public void surfaceChanged(SurfaceHolder holder, int format,
int width, int height) {
System.out.println("holder 变化了。。。");
}
});
}
/**
* TODO 1、开始播放视频
*
* @param view
*/
public void start(View view) {
try {
String videoPath = et_path.getText().toString().trim();
mediaPlayer = new MediaPlayer();
mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
mediaPlayer.setDataSource(videoPath);
mediaPlayer.setLooping(true);// 循环播放
// TODO b、SurfaceHolder//画面显示在哪里
SurfaceHolder sh = sv.getHolder();
mediaPlayer.setDisplay(sh);
// TODO a、prepareAsync()
mediaPlayer.prepareAsync();
mediaPlayer.setOnPreparedListener(new OnPreparedListener() {
@Override
public void onPrepared(MediaPlayer mp) {
mediaPlayer.start();
}
});
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* TODO 2、暂停播放视频
*
* @param view
*/
public void pause(View view) {
if ("续播".equals(bt_pause.getText().toString().trim()) && mediaPlayer!=null) {
mediaPlayer.start();
bt_pause.setText("暂停");
return;
}
if (mediaPlayer != null && mediaPlayer.isPlaying()) {
mediaPlayer.pause();
bt_pause.setText("续播");
}
}
/**
* TODO 3、停止播放视频
*
* @param view
*/
public void stop(View view) {
if (mediaPlayer != null && mediaPlayer.isPlaying()) {
mediaPlayer.stop();
mediaPlayer.release();
mediaPlayer = null;
}
}
/**
* TODO 4、重新播放视频
*
* @param view
*/
public void replay(View view) {
if (mediaPlayer != null && mediaPlayer.isPlaying()) {
mediaPlayer.seekTo(0);
mediaPlayer.start();
}
start(view);
}
}