[android-developers] Re: View.getContext returns NULL

Updated link to the source: http://github.com/wargoth/Sketcher/blob/master/src/org/sketcher/Surface.java#L137
And stacktrace:

java.lang.RuntimeException: Unable to pause activity {org.sketcher/
org.sketcher.Sketcher}: java.lang.NullPointerException
at
android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:
2542)
at android.app.ActivityThread.access$2200(ActivityThread.java:119)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:
1863)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:123)
at android.app.ActivityThread.main(ActivityThread.java:4363)
at java.lang.reflect.Method.invokeNative(Method.java:-2)
at java.lang.reflect.Method.invoke(Method.java:521)
at com.android.internal.os.ZygoteInit
$MethodAndArgsCaller.run(ZygoteInit.java:860)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
at dalvik.system.NativeStart.main(NativeStart.java:-2)
Caused by: java.lang.NullPointerException:
at org.sketcher.Surface.saveState(Surface.java:139)
at org.sketcher.Sketcher.onPause(Sketcher.java:103)
at android.app.Activity.performPause(Activity.java:3782)
at
android.app.Instrumentation.callActivityOnPause(Instrumentation.java:
1190)
at
android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:
2530)
at android.app.ActivityThread.access$2200(ActivityThread.java:119)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:
1863)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:123)
at android.app.ActivityThread.main(ActivityThread.java:4363)
at java.lang.reflect.Method.invokeNative(Method.java:-2)
at java.lang.reflect.Method.invoke(Method.java:521)
at com.android.internal.os.ZygoteInit
$MethodAndArgsCaller.run(ZygoteInit.java:860)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
at dalvik.system.NativeStart.main(NativeStart.java:-2)

On 14 июн, 00:26, WarGoth <yava...@gmail.com> wrote:
> Hi. I'm trying to save a file in Activity.onPause method and sometimes
> (I've fond it in Market stacktrace) View.getContext returns NULL. The
> code:
>
> public class MyActivity extends Activity {
> ...
> @Override
>         protected void onPause() {
>                 super.onPause();
>                 surface.saveState();
>         }
> ...
>
> }
>
> class Surface extends SurfaceView {
> ...
> public void saveState() {
>                 try {
>                         FileOutputStream fos = getContext().openFileOutput(STATE_FILE,
>                                         Context.MODE_WORLD_READABLE);
>                         bitmap.compress(CompressFormat.PNG, 100, fos);
>                 } catch (FileNotFoundException e) {
>                         e.printStackTrace();
>                 }
>         }
> ...
>
> }
>
> Link to the code:http://github.com/wargoth/Sketcher/blob/master/src/org/sketcher/Surfa...
>
> Stacktrace:
>
> ...
> dalvik.system.NativeStart.main(NativeStart.java:-2) Caused by:
> java.lang.NullPointerException:
> at org.sketcher.Surface.saveState(Surface.java:139) at
> org.sketcher.Sketcher.onPause(Sketcher.java:101) at
> android.app.Activity.performPause(Activity.java:3782) at
> android.app.Instrumentation.callActivityOnPause(Instrumentation.java:
> 1190) at
> android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:
> 2530) at android.app.ActivityThread.access$2200(ActivityThread.java:
> 119) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:
> 1863) at android.os.Handler.dispatchMessage(Handler.java:99) at
> android.os.Looper.loop(Looper.java:123) at
> android.app.ActivityThread.main(ActivityThread.java:4363) at
> java.lang.reflect.Method.invokeNative(Method.java:-2) at
> java.lang.reflect.Method.invoke(Method.java:521) at
> com.android.internal.os.ZygoteInit
> $MethodAndArgsCaller.run(ZygoteInit.java:860) at
> com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618) at
> dalvik.system.NativeStart.main(NativeStart.java:-2)
>
> Any ideas? Thank you

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