Android(安卓)View measure(0,0)的作用

将view.measure(0,0)设置为0的时候表示，此时不需要考虑父控件的布局问题，直接使用getMeasuredWidth和getMeasuredHeight获取此view的自身的实际大小，可以看下面的例子：这个是在网上引用的一段代码

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 public class Utility { public static void setListViewHeightBasedOnChildren(ListView listView) { ListAdapter listAdapter = listView.getAdapter(); if (listAdapter == null ) { // pre-condition return ; } int totalHeight = 0 ; for ( int i = 0 ; i < listAdapter.getCount(); i++) { View listItem = listAdapter.getView(i, null , listView); listItem.measure( 0 , 0 ); totalHeight += listItem.getMeasuredHeight(); } ViewGroup.LayoutParams params = listView.getLayoutParams(); params.height = totalHeight + (listView.getDividerHeight() * (listAdapter.getCount() - 1 )); listView.setLayoutParams(params); } }

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