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会一直崩溃。
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);
我做错了什么?
答案 0 :(得分:4)
没有日志,有两条建议:
SurfaceHolder.Callback.surfaceCreated()
。MediaPlayer.create()
SurfaceHolder
醇>
拨打start()
时,可能还没有创建表面。您应该使用MediaPlayer.setDisplay()
和MediaPlayer.start() only after surface is created. To do this, you should add override
SurfaceHolder.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();
}
}
}
似乎有其他MediaPlayer.create()
接受SurfaceHolder
作为其中一个参数 - 您可以尝试:http://developer.android.com/reference/android/media/MediaPlayer.html#create(android.content.Context, android.net.Uri, android.view.SurfaceHolder)