问题描述
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我尝试了此处发布的可接受的解决方案,但它似乎忽略了填充。当第二个视图(在这种情况下为按钮)显示时,它比带有填充的原始视图小得多。有没有解决方法?谢谢
解决方法
是的,
TransitionDrawable
从LayerDrawable
开始扩展,忽略了填充。这是基本Android代码中的getPadding()
方法,它摆脱了您指定的任何内容:
@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;
}
请在此处查看基本的Android代码。
为了解决这个问题,我必须先保存填充值,然后在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);