Android SDK：媒体播放器 – 从HTTP网址加载视频流

我有一个MediaPlayerActivity,代码如下：
此代码基本上尝试从http url获取视频流并加载它但由于某种原因它不断崩溃.

public class MediaPlayerActivity extends Activity {

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        this.setContentView(R.layout.video_player);
        SurfaceView v = (SurfaceView) findViewById(R.id.surface_video); 
        SurfaceHolder holder = v.getHolder(); 
        holder.setFixedSize(400,300); 

        MediaPlayer mp = MediaPlayer.create(this, Uri.parse("http://stream-url.com/playlist.m3u8")); 
        mp.setDisplay(holder);
        //mp.setAudioStreamType(2); 
        try {
            //mp.prepare();
            mp.start();
        } catch (IllegalStateException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }


    }

}

video_player.xml：

<?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" 
> 
<SurfaceView android:id="@+id/surface_video" 
android:layout_width="250px" 
android:layout_height="250px"> 
</SurfaceView> 
<LinearLayout 
android:orientation="horizontal" 
android:layout_height="wrap_content" 
android:layout_width="fill_parent" 
android:padding="10dip" 
> 
</LinearLayout> 
</LinearLayout> 

当我使用以下代码进行此活动时,它会崩溃：

Intent myIntent = new Intent(HomeActivity.this, MediaPlayerActivity.class);
                    HomeActivity.this.startActivity(myIntent);

我究竟做错了什么？

解决方法:

没有日志,有两个建议：

>尝试实现SurfaceHolder.Callback.surfaceCreated().
>尝试使用接受SurfaceHolder的MediaPlayer.create()

细节(1)

调用start()时,可能还没有创建表面.只有在创建表面后才应使用MediaPlayer.setDisplay()和MediaPlayer.start().为此,您应该添加overrideSurfaceHolder.Callback.surfaceCreated()`.例如,您的代码可能如下所示.

public class MediaPlayerActivity extends Activity implements SurfaceHolder.Callback {
    MediaPlayer mp; 

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        this.setContentView(R.layout.video_player);
        SurfaceView v = (SurfaceView) findViewById(R.id.surface_video); 
        SurfaceHolder holder = v.getHolder(); 
        holder.setFixedSize(400,300);
        holder.addCallback(this). 

        mp = MediaPlayer.create(this, Uri.parse("http://stream-url.com/playlist.m3u8")); 

    @Override
    public void surfaceCreated(SurfaceHolder holder) {

        mp.setDisplay(holder); 
        try {
            mp.start();
        } catch (IllegalStateException e) {
            e.printStackTrace();
        }
    }
}

细节(2)

似乎有其他MediaPlayer.create()接受SurfaceHolder作为参数之一 – 您可以尝试它：http：//developer.android.com/reference/android/media/MediaPlayer.html#create(android.content. Context,android.net.Uri,android.view.SurfaceHolder)

标签：android-video-player,android,android-mediaplayer
来源： https://codeday.me/bug/20191008/1871083.html