How to take a screenshort of a view on android?

Question

I want to take a picture of a view in Activity and share this picture. First I use this method :

private Bitmap getShareViewShot() {
    this.setDrawingCacheEnabled(true);
    this.buildDrawingCache();
    Bitmap bitmap = Bitmap.createBitmap(this.getDrawingCache(), 0, mSharePageRoot.getTop(), this.getWidth(), mSharePageRoot.getBottom());
    this.setDrawingCacheEnabled(false);
    return bitmap;
}

But if the view is in a ScrollView and the view has scrolled outside the screen, this method can't get a whole picture of this view.

So I change this method to below :

private Bitmap getShareViewShot() {
    Bitmap bitmap = Bitmap.createBitmap(mSharePageRoot.getWidth(), mSharePageRoot.getHeight(),
            Bitmap.Config.ARGB_8888);
    mSharePageRoot.layout(0, 0, mSharePageRoot.getLayoutParams().width, mSharePageRoot.getLayoutParams().height);
    final Canvas canvas = new Canvas(bitmap);
    mSharePageRoot.draw(canvas);
    return bitmap;    
}

But another question comes: this view has no backgroud, so the picture I get has a black backgroud.In my code ,the Activity have a network image as the backgroud, so this means this method can't get the backgroud of the activity.

Please forgive me for my bad English. Is there any other method ? thanks.

https://stackoverflow.com/questions/2661536/how-to-programmatically-take-a-screenshot-in-android?rq=1 — Marcin Orlowski, Apr 20 '16 at 09:46
possible duplicate of http://stackoverflow.com/questions/2661536/how-to-programmatically-take-a-screenshot-in-android — Nirav Ranpara, Apr 20 '16 at 09:51

score 0 · Answer 1 · answered Apr 20 '16 at 09:53

0

Yes, there is another method. There is a library by google called ASL(Android screenshot library). It's pretty simple.

https://code.google.com/archive/p/android-screenshot-library/wikis/DeveloperGuide.wiki

answered Apr 20 '16 at 09:53

Hossam Alaa

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score 0 · Answer 2 · answered Apr 20 '16 at 09:55

You can draw background by canvas, like this:

private Bitmap getShareViewShot() {
    Bitmap bitmap = Bitmap.createBitmap(mSharePageRoot.getWidth(), mSharePageRoot.getHeight(),
        Bitmap.Config.ARGB_8888);
    mSharePageRoot.layout(0, 0, mSharePageRoot.getLayoutParams().width, mSharePageRoot.getLayoutParams().height);
    final Canvas canvas = new Canvas(bitmap);
    // the bitmap will have a white background
    canvas.drawColor(0xffffffff);
    mSharePageRoot.draw(canvas);
    return bitmap;    
}

The backgroud is a network image, if draw it ,it may be not loaded.But I can only use this way, listener download finish and use the backgroud image to draw. Thank you. — Charon Chui, Apr 21 '16 at 11:42

How to take a screenshort of a view on android?

2 Answers2