ShowcaseView - width and height must be > 0

Question

Research has been fruitless because all other references to this error seem to be reliably repeatable; I\'m unable to consistently repeat this error:

08-22 1         


        

Answer 1

go to com.github.amlcurran.showcaseview.ShowcaseView and change this method

private void updateBitmap() {
        if ((bitmapBuffer == null || haveBoundsChanged()) && getMeasuredHeight() > 0 && getMeasuredWidth() > 0) {
            if(bitmapBuffer != null)
                bitmapBuffer.recycle();
            int width = getMeasuredWidth();
            int height = getMeasuredHeight();
            if(width > 0 && height > 0)
                bitmapBuffer = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);

        }
    }

Answer 2

This is a known issue : Github issues when updateBitmap() is called too early.
This issue comes from Bitmap.createBitmap() method either width or height equals to 0.
A workaround is to delay the ShowcaseView creation more:

someView.post(new Runnable() {
    @Override
    public void run() {
        // display ShowcaseView here
    }
});

You could also change the updateBitmap() method from the library to not create the bitmap if the view width or height is wrong.

Answer 3

This was a bug in ShowcaseView, and was fixed starting in v5.4.2: https://github.com/amlcurran/ShowcaseView/commit/c79c60dc798f081fb62e48c549c7bdbff8da51b9

So, you can just update your build.gradle to:

compile 'com.github.amlcurran.showcaseview:library:5.4.2'

Answer 4

Had the same problem, and posted my solution in another thread: https://stackoverflow.com/a/25521608/1752670

I changed the ShowcaseView class slightly