Hello fellow developers!
I'm having quite a hard time using the android.media.MediaPlayer
class.
I would like to implement a very simple proof of concept Activity that
just launches a mp4 video.
I've successfully achieved this by using a callback like this:
See ACTIVITY 1.
It successfully plays the video.
After that I tried the Callback-free version:
See ACTIVITY 2.
The result is sound coming out just fine and a black square instead of
a video.
Does anyone knows what is going on here?
In using:
android-sdk-linux_x86-1.1_r1
java-sun6-sdk
Ubuntu 9.04 32bits
Thank you!
##############BEGIN ACTIVITY 1###########
package test.test;
import java.io.IOException;
import android.app.Activity;
import android.media.AudioManager;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
class MyCallback implements SurfaceHolder.Callback,
MediaPlayer.OnPreparedListener{
private String path;
private MediaPlayer mMediaPlayer;
public MyCallback(String string) {
path=string;
}
public void surfaceChanged(SurfaceHolder holder, int format, int
width,int height) {}
public void surfaceCreated(SurfaceHolder holder) {
mMediaPlayer = new MediaPlayer();
try {
mMediaPlayer.setDataSource(path);
mMediaPlayer.setDisplay(holder);
mMediaPlayer.prepare();
} catch (IOException e) {
e.printStackTrace();
}
mMediaPlayer.setOnPreparedListener(this);
mMediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
}
public void surfaceDestroyed(SurfaceHolder holder) {
}
public void onPrepared(MediaPlayer mp) {
mp.start();
}
}
public class test extends Activity {
private SurfaceView mPreview;
private SurfaceHolder holder;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mPreview = (SurfaceView) findViewById(R.id.SurfaceView01);
holder = mPreview.getHolder();
holder.addCallback(new MyCallback("/sdcard/yu2.mp4"));
holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
}
}
##############END OF ACTIVITY 1###########
##############BEGIN ACTIVITY 2###########
package test.test;
import android.app.Activity;
import android.media.AudioManager;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
public class test extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Button but = (Button) findViewById(R.id.Button01);
but.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
show();
}
});
}
private void show() {
SurfaceView sv = (SurfaceView) findViewById(R.id.SurfaceView01);
SurfaceHolder holder = sv.getHolder();
holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
MediaPlayer mp = new MediaPlayer();
try {
mp.setDataSource("/sdcard/yu2.mp4");
mp.setDisplay(holder);
mp.setAudioStreamType(AudioManager.STREAM_MUSIC);
mp.prepare();
} catch (Exception e) {
e.printStackTrace();
}
mp.start();
}
}
##############END OF ACTIVITY 2###########
##############LAYOUT###########
<?xml version="1.0" encoding="utf-8"?>
<AbsoluteLayout android:id="@+id/AbsoluteLayout01"
xmlns:android="http://schemas.android.com/apk/res/android";
android:layout_height="fill_parent"
android:layout_width="fill_parent"><SurfaceView android:id="@+id/
SurfaceView01" android:layout_height="100px"
android:layout_width="100px"></SurfaceView>
<Button android:id="@+id/Button01" android:layout_width="wrap_content"
android:layout_height="wrap_content" android:layout_y="200px"></
Button>
</AbsoluteLayout>
##############END OF LAYOUT###########
--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google
Groups "Android Developers" group.
To post to this group, send email to [email protected]
To unsubscribe from this group, send email to
[email protected]
For more options, visit this group at
http://groups.google.com/group/android-developers?hl=en
-~----------~----~----~----~------~----~------~--~---
