Android: solves the problem that view. getDrawingCache () returns null,

Android: solves the problem that view. getDrawingCache () returns null,

In project development, sometimes the content of a View (including its subview) needs to be saved as an image (similar to), so the first thought of View. getDrawingCache (), which returns a Bitmap. but when I use it, This method always returns null. I checked it online and needed to set a bunch of parameters, but it is still not very easy to use.

I suddenly thought of another idea. Since it is so difficult to get the View content, it is better to directly draw the View content to another canvas! As a result, the solution was born and is available for test:

Public static Bitmap getViewBitmap (View view) {Bitmap bitmap = Bitmap. createBitmap (view. getWidth (), view. getHeight (), Bitmap. config. ARGB_8888); Canvas canvas = new Canvas (bitmap); view. draw (canvas); return bitmap ;}

Solve the problem!

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