我有以下code一MediaPlayerActivity: 这code基本上是试图从一个HTTP URL得到一个视频流,并加载它,但由于某种原因,它不断崩溃。
I have a MediaPlayerActivity with the following code: This code basically tries to get a video stream from a http url and load it but for some reason it keeps crashing.
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:
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>
当我去这个活动使用下面的code它崩溃了:
When I go to this activity using the following code it crashes:
Intent myIntent = new Intent(HomeActivity.this, MediaPlayerActivity.class);
HomeActivity.this.startActivity(myIntent);
我是什么做错了吗?
What am I doing wrong?
推荐答案
如果没有记录,两个建议:
Without logs, two suggestions:
尝试实施 SurfaceHolder.Callback.surfaceCreated()
。
尝试使用 MediaPlayer.create()
接受 SurfaceHolder
try implementing SurfaceHolder.Callback.surfaceCreated()
.
try using MediaPlayer.create()
that accepts SurfaceHolder
也许当你调用启动面尚未创建()
。您应该使用 MediaPlayer.setDisplay()
并创建面 MediaPlayer.start()之后。要做到这一点,你应该增加覆盖
SurfaceHolder.Callback.surfaceCreated()`。例如,你的code可能看起来像这样。
Details of (1)
Maybe your surface is not yet created when you call start()
. You should use MediaPlayer.setDisplay()
and MediaPlayer.start() only after surface is created. To do this, you should add override
SurfaceHolder.Callback.surfaceCreated()`. For example, your code could look like this.
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();
}
}
}
(2)
详细似乎有其他 MediaPlayer.create()
接受 SurfaceHolder
作为一个参数 - 你可以尝试一下: http://developer.android.com/reference/android/media/MediaPlayer.html#create(android.content.Context, android.net.Uri,android.view.SurfaceHolder)
Details of (2)
There seems to be other MediaPlayer.create()
that accepts SurfaceHolder
as one of the arguments - you could try it: http://developer.android.com/reference/android/media/MediaPlayer.html#create(android.content.Context, android.net.Uri, android.view.SurfaceHolder)
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