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Commit 0fd2574a authored by Chong Zhang's avatar Chong Zhang
Browse files

Do not draw background if the background drawable is null 

Some apps may not have background drawables.

bug: 26729953
Change-Id: I1e93013bb91ba376449bc580646fc733ca4dd072
parent 84867864

core/java/com/android/internal/policy/BackdropFrameRenderer.java

+9 −4
Original line number Diff line number Diff line
@@ -289,12 +289,17 @@ public class BackdropFrameRenderer extends Thread implements Choreographer.Frame 
        DisplayListCanvas canvas = mFrameAndBackdropNode.start(width, height);

        final Drawable drawable = mUserCaptionBackgroundDrawable != null

                ? mUserCaptionBackgroundDrawable : mCaptionBackgroundDrawable;



        if (drawable != null) {

            drawable.setBounds(0, 0, left + width, top + mLastCaptionHeight);

            drawable.draw(canvas);

        }



        // The backdrop: clear everything with the background. Clipping is done elsewhere.

        if (mResizingBackgroundDrawable != null) {

            mResizingBackgroundDrawable.setBounds(0, mLastCaptionHeight, left + width, top + height);

            mResizingBackgroundDrawable.draw(canvas);

        }

        mFrameAndBackdropNode.end(canvas);



        if (mSystemBarBackgroundNode != null && mStatusBarColor != null) {