private void setDrawableInternal(Drawable drawable) {
if (!mAttached) {
throw new IllegalStateException("Must attach before setting background drawable");
}
if (mChangeRunnable != null) {
mChangeRunnable.cancel();
}
mChangeRunnable = new ChangeBackgroundRunnable(drawable);
mHandler.postDelayed(mChangeRunnable, CHANGE_BG_DELAY_MS);
}
/**
* Release references to Drawables. Typically called to reduce memory overhead when not visible.
*
* <p>When an Activity is resumed, if the BackgroundManager has not been released, the continuity
* service is updated from the BackgroundManager state. If the BackgroundManager was released, the
* BackgroundManager inherits the current state from the continuity service.
*/
public void release() {
if (DEBUG) Log.v(TAG, "release");
if (mLayerDrawable != null) {
mLayerDrawable.setDrawableByLayerId(R.id.background_imagein, createEmptyDrawable());
mLayerDrawable.setDrawableByLayerId(R.id.background_imageout, createEmptyDrawable());
mLayerDrawable = null;
}
mLayerWrapper = null;
mImageInWrapper = null;
mImageOutWrapper = null;
mColorWrapper = null;
mDimWrapper = null;
mThemeDrawable = null;
if (mChangeRunnable != null) {
mChangeRunnable.cancel();
mChangeRunnable = null;
}
releaseBackgroundBitmap();
}
