我遇到了问题:
我正在膨胀相对布局,我需要测量其内容的大小。我使用以下代码:
....
final RelativeLayout relativeLayout = (RelativeLayout) inflater.inflate(id, null, false);
RelativeLayout relative = (RelativeLayout) relativeLayout.findViewById(R.id.content);
relativeLayout.measure(0,0);
widthSoFar = widthSoFar + relative.getMeasuredWidth();
....
使用19之前的API,代码不起作用,Error:NullPointerException in“relativelayout.measure(0,0)”。但是使用API 20或21代码可以很好地运行。
如何使用Api在19之前测量宽度?
谢谢
最好的问候。
答案 0 :(得分:0)
试试这个:
final RelativeLayout relativeLayout = (RelativeLayout) inflater.inflate(id, null, false);
RelativeLayout relative = (RelativeLayout) relativeLayout.findViewById(R.id.content);
relativeLayout.measure(MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED), MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED));
widthSoFar = widthSoFar + relative.getMeasuredWidth();