TransitionDrawable不考虑填充？

Question

我尝试了这里发布的已接受的解决方案,但似乎忽略了填充.当显示第二个视图(在这种情况下是一个按钮)时,它比具有填充的原始视图小得多.有解决方法吗？谢谢

Answer 1

是的,TransitionDrawable从中延伸LayerDrawable忽略填充.这是getPadding()基本Android代码中的方法,它可以删除您指定的任何内容:

    @Override
    public boolean getPadding(Rect padding) {
        // Arbitrarily get the padding from the first image.
        // Technically we should maybe do something more intelligent,
        // like take the max padding of all the images.
        padding.left = 0;
        padding.top = 0;
        padding.right = 0;
        padding.bottom = 0;
        final ChildDrawable[] array = mLayerState.mChildren;
        final int N = mLayerState.mNum;
        for (int i=0; i<N; i++) {
            reapplyPadding(i, array[i]);
            padding.left += mPaddingL[i];
            padding.top += mPaddingT[i];
            padding.right += mPaddingR[i];
            padding.bottom += mPaddingB[i];
        }
        return true;
    }

在此处查看基本Android代码.

要处理它,我必须首先保存填充值,然后在我的视图上设置错误的可绘制背景:

    int bottom = theView.getPaddingBottom();
    int top = theView.getPaddingTop();
    int right = theView.getPaddingRight();
    int left = theView.getPaddingLeft();
    theView.setBackgroundResource(R.drawable.faulty_drawable);
    theView.setPadding(left, top, right, bottom);