It seems that my media player object is somehow destroyed when I use
onRetainNonConfigurationInstance. I when I catch the object in
"createMediaPlayer" below I can verify that mp != null. But when I try
to get the current position with mp.getCurrentPosition() I get an
exception and the activity shuts down. I can see the following in the
log:
02-16 10:45:55.869: DEBUG/StreamingPlayer(1854): restoreMediaPlayer
02-16 10:45:55.879: DEBUG/AndroidRuntime(1854): Shutting down VM
02-16 10:45:55.879: WARN/dalvikvm(1854): threadid=3: thread exiting
with uncaught exception (group=0x4000fe70)
02-16 10:45:55.889: ERROR/AndroidRuntime(1854): Uncaught handler:
thread main exiting due to uncaught exception
02-16 10:45:55.919: ERROR/AndroidRuntime(1854):
java.lang.RuntimeException: Unable to start activity
ComponentInfo{com.stericsson.streamingplayer/
com.stericsson.streamingplayer.StreamingPlayer}:
java.lang.IllegalStateException
02-16 10:45:55.919: ERROR/AndroidRuntime(1854): at
android.app.ActivityThread.performLaunchActivity(ActivityThread.java:
2268)
02-16 10:45:55.919: ERROR/AndroidRuntime(1854): at
android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:
2284)
02-16 10:45:55.919: ERROR/AndroidRuntime(1854): at
android.app.ActivityThread.handleRelaunchActivity(ActivityThread.java:
3278)
02-16 10:45:55.919: ERROR/AndroidRuntime(1854): at
android.app.ActivityThread.access$1900(ActivityThread.java:112)
02-16 10:45:55.919: ERROR/AndroidRuntime(1854): at
android.app.ActivityThread$H.handleMessage(ActivityThread.java:1696)
02-16 10:45:55.919: ERROR/AndroidRuntime(1854): at
android.os.Handler.dispatchMessage(Handler.java:99)
02-16 10:45:55.919: ERROR/AndroidRuntime(1854): at
android.os.Looper.loop(Looper.java:123)
02-16 10:45:55.919: ERROR/AndroidRuntime(1854): at
android.app.ActivityThread.main(ActivityThread.java:3948)
02-16 10:45:55.919: ERROR/AndroidRuntime(1854): at
java.lang.reflect.Method.invokeNative(Native Method)
02-16 10:45:55.919: ERROR/AndroidRuntime(1854): at
java.lang.reflect.Method.invoke(Method.java:521)
02-16 10:45:55.919: ERROR/AndroidRuntime(1854): at
com.android.internal.os.ZygoteInit
$MethodAndArgsCaller.run(ZygoteInit.java:782)
02-16 10:45:55.919: ERROR/AndroidRuntime(1854): at
com.android.internal.os.ZygoteInit.main(ZygoteInit.java:540)
02-16 10:45:55.919: ERROR/AndroidRuntime(1854): at
dalvik.system.NativeStart.main(Native Method)
02-16 10:45:55.919: ERROR/AndroidRuntime(1854): Caused by:
java.lang.IllegalStateException
02-16 10:45:55.919: ERROR/AndroidRuntime(1854): at
android.media.MediaPlayer.getCurrentPosition(Native Method)
02-16 10:45:55.919: ERROR/AndroidRuntime(1854): at
com.stericsson.streamingplayer.StreamingPlayer.restoreMedidaPlayer(StreamingPlayer.java:
233)
02-16 10:45:55.919: ERROR/AndroidRuntime(1854): at
com.stericsson.streamingplayer.StreamingPlayer.createMediaPlayer(StreamingPlayer.java:
155)
02-16 10:45:55.919: ERROR/AndroidRuntime(1854): at
com.stericsson.streamingplayer.StreamingPlayer.onCreate(StreamingPlayer.java:
94)
02-16 10:45:55.919: ERROR/AndroidRuntime(1854): at
android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:
1123)
02-16 10:45:55.919: ERROR/AndroidRuntime(1854): at
android.app.ActivityThread.performLaunchActivity(ActivityThread.java:
2231)
02-16 10:45:55.919: ERROR/AndroidRuntime(1854): ... 12 more
The code which gives the print " restoreMediaPlayer" is located in
function "createMediaPlayer" which I provided in my previous post.
Why can't I pass trough the media player object when I can send
variables just fine? Could it be that I need to create a new thread?
When I start the media player the first time it looks like this in the
code:
Runnable r = new Runnable() {
public void run() {
setDataSource(path);
prepare();
start();
}
};
new Thread(r).start();
But I wasn't able to reuse the code after orientation change, I still
had my activity crashing.
Regards
Martin
On 15 Feb, 13:46, Martin Nilsson <[email protected]> wrote:
> Hello,
>
> I am trying to keep a video playback going after a orientation change
> but keep getting a crash when trying to pass the media player trough
> onRetainNonConfigurationInstance.
>
> I can pass the time, setup the media player from scratch and do a fast
> forward but I would not like to do the setup more than once.
>
> My code looks like:
>
> @Override
> public Object onRetainNonConfigurationInstance() {
> return( mp );
> }
>
> public void onCreate(Bundle icicle) {
> ...
> createMediaPlayer();
>
> }
>
> public void createMediaPlayer() {
> ...
> if (getLastNonConfigurationInstance()!=null) {
> mp = (MediaPlayer) getLastNonConfigurationInstance() ;
> } else {
> mp = new MediaPlayer();
> ...
> }
>
> }
>
> Can anyone help me pinpoint why this does not work?
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