failed binder transaction on widget update

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情书的邮戳
情书的邮戳 2020-12-10 20:38

i am updating one bitmap in widget (the whole widget is only one ImageView) like this

remoteViews.setImageViewBitmap(...)

and in some rare

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  •  没有蜡笔的小新
    2020-12-10 21:32

    This is caused because all the changes to the RemoteViews are serialised (e.g. setInt and setImageViewBitmap ). The bitmaps are also serialised into an internal bundle. Unfortunately this bundle has a very small size limit.

    You can solve it by scaling down the image size this way:

    public static Bitmap scaleDownBitmap(Bitmap photo, int newHeight, Context context) {
    
    final float densityMultiplier = context.getResources().getDisplayMetrics().density;        
    
    int h= (int) (newHeight*densityMultiplier);
    int w= (int) (h * photo.getWidth()/((double) photo.getHeight()));
    
    photo=Bitmap.createScaledBitmap(photo, w, h, true);
    
    return photo;
    }
    

    Choose newHeight to be small enough (~100 for every square it should take on the screen) and use it for your widget, and your problem will be solved :)

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