[android-developers] Live wallpaper. nullPointerException when detecting preview mode

Hi 

I am developing a live wallpaper and want the preview mode to display a bitmap as opposed to the regular animation in "run" mode.

I know I should use the isPreview() call and all my searches indicate that I should do this in the onCreateEngine() method which is what I did. However I get a nullPointerException. I have tried other locations and the only locations it works are located too far down to perform initialisation.

Any help is Greatly appreciated.

Thanks

JPS

@Override

public Engine onCreateEngine() {

mEng = new WallpaperEngine();

if (mEng!= null) {

if (mEng.isPreview()) { // crash here

Log.d(TAG, "preview mode");

// display preview bitmap

} else {

Log.d(TAG, "run mode");

// perform full initalization

}

}

return mEng;

}

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