Android 使用MediaPlayer播放视频切换后台暂停再恢复互前台继续播放的bug修改

来源：互联网发布：qq游戏大厅官方mac 编辑：程序博客网时间：2024/04/25 20:19
import android.media.AudioManager;import android.media.MediaPlayer;import android.net.Uri;import android.os.Bundle;import android.os.Handler;import android.view.KeyEvent;import android.view.SurfaceHolder;import android.view.SurfaceView;import android.view.View;import android.widget.ImageView;import android.widget.LinearLayout;import com.yourdream.app.android.R;import com.yourdream.app.android.ui.base.activity.BaseActivity;import com.yourdream.app.android.ui.page.main.MainActivity;import com.yourdream.app.android.utils.LogUtils;import com.yourdream.app.android.utils.PageSwitch;/** * 登录注册页面 */public class GuidVideoActivity extends BaseActivity{    private SurfaceView surfaceView;    private MediaPlayer mediaPlayer;    private SurfaceHolder surfaceHolder;    private boolean isSurfaceCreated =false;        //surface是否已经创建好    private Uri mUri;    private int curIndex = 0;    @Override    protected void onCreate(Bundle savedInstanceState)    {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_log_reg);        initPlayerObj();        InitControl();    }    private void initPlayerObj()    {        mUri = Uri.parse("android.resource://" + getPackageName() + "/"+ R.raw.guidvideo);        surfaceView = (SurfaceView) findViewById(R.id.sv);        mediaPlayer = new MediaPlayer();        mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);      //设置视频流类型        CreateSurface();    }    private void InitControl()    {        LinearLayout LoginRegLayout = (LinearLayout)findViewById(R.id.log_reg_btn);        LinearLayout LookRoundLayout = (LinearLayout)findViewById(R.id.look_round_btn);        ImageView SkipImg = (ImageView)findViewById(R.id.skip_img);                //右上角跳过文本        ClickEventDelegate ClickListener = new ClickEventDelegate();        LoginRegLayout.setOnClickListener(ClickListener);        LookRoundLayout.setOnClickListener(ClickListener);        SkipImg.setOnClickListener(ClickListener);    }    private class ClickEventDelegate implements View.OnClickListener    {        @Override        public void onClick(View v)        {            switch(v.getId())            {                case R.id.log_reg_btn:                    String[] key = {"Register_Way"};                    String[] values = {"GuiVideoActivity"};                    PageSwitch.GoActivityByParams(GuidVideoActivity.this,LoginRegistActivity.class,key,values);                    finish();                    break;                case R.id.look_round_btn:                    PageSwitch.GoActivityNoParams(GuidVideoActivity.this,MainActivity.class);                    finish();                    break;                case R.id.skip_img:                    PageSwitch.GoActivityNoParams(GuidVideoActivity.this,MainActivity.class);                    finish();                    break;            }        }    }    /**     * 创建视频展示页面     */    private void CreateSurface()    {        surfaceHolder = surfaceView.getHolder();        surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); //兼容4.0以下的版本        surfaceHolder.addCallback(new SurfaceHolder.Callback() {            @Override            public void surfaceDestroyed(SurfaceHolder holder) {                isSurfaceCreated = false;                if(mediaPlayer.isPlaying())<span style="white-space:pre"></span>//此处需要注意                {                    curIndex = mediaPlayer.getCurrentPosition();                    mediaPlayer.stop();                }            }            @Override            public void surfaceCreated(SurfaceHolder holder) {                isSurfaceCreated = true;                mediaPlayer.setDisplay(surfaceHolder);<span style="white-space:pre"></span>//页面创建好了以后再展示            }            @Override            public void surfaceChanged(SurfaceHolder holder, int format,                                       int width, int height) {            }        });    }    /**     * 释放播放器资源     */    private void ReleasePlayer()    {        if(mediaPlayer!=null)        {            mediaPlayer.stop();            mediaPlayer.release();            mediaPlayer = null;        }    }    /**     * 暂停     */    private void Pause()    {        if (mediaPlayer != null && mediaPlayer.isPlaying())        {            curIndex = mediaPlayer.getCurrentPosition();            mediaPlayer.pause();        }    }    private void Play(final int currentPosition,Uri mUri)    {        try        {            mediaPlayer.reset();            mediaPlayer.setDataSource(GuidVideoActivity.this,mUri);            mediaPlayer.setDisplay(surfaceView.getHolder());            mediaPlayer.setLooping(true);            mediaPlayer.prepareAsync();            mediaPlayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener()            {                @Override                public void onPrepared(MediaPlayer mp)                {                    mediaPlayer.seekTo(currentPosition);                    mediaPlayer.start();                }            });            mediaPlayer.setOnErrorListener(new MediaPlayer.OnErrorListener() {                @Override                public boolean onError(MediaPlayer mp, int what, int extra) {                    return false;                }            });        }        catch (Exception e)        {            LogUtils.d("line:210--GuidVideoActivity--Play--error");        }    }    /**     * 创建完毕页面后需要将播放操作延迟10ms防止因surface创建不及时导致播放失败     */    @Override    protected void onResume()    {        super.onResume();        new Handler().postDelayed(new Runnable()        {            public void run()            {                if(isSurfaceCreated)                {                    Play(curIndex,mUri);                }            }        }, 10);    }    /**     * 页面从前台到后台会执行 onPause ->onStop 此时Surface会被销毁，     * 再一次从后台 到前台时需要 重新创建Surface     */    @Override    protected void onRestart()    {        super.onRestart();        if(!isSurfaceCreated)        {            CreateSurface();        }    }    @Override    protected void onPause()    {        super.onPause();        Pause();    }    @Override    protected void onStop()    {        super.onStop();    }    @Override    protected void onDestroy()    {        super.onDestroy();        ReleasePlayer();            }    @Override    public boolean onKeyDown(int keyCode, KeyEvent event)    {        if(keyCode == KeyEvent.KEYCODE_BACK && event.getAction() == KeyEvent.ACTION_DOWN)        {            finish();            return true;        }        return super.onKeyDown(keyCode, event);    }}
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