利用下面這個Utility 類的靜態方法setListViewHeightBasedOnChildren()即可實現:
在listview.setAdapter()之後調用Utility.setListViewHeightBasedOnChilren(listview)就Okay 了。
public class Utility {
public static void setListViewHeightBasedOnChildren(ListView listView) {
//獲取ListView對應的Adapter
ListAdapter listAdapter = listView.getAdapter();
if (listAdapter == null) {
// pre-condition
return;
}
int totalHeight = 0;
for (int i = 0, len = listAdapter.getCount(); i < len; i++) { //listAdapter.getCount()返回數據項的數目
View listItem = listAdapter.getView(i, null, listView);
listItem.measure(0, 0); //計算子項View 的寬高
totalHeight += listItem.getMeasuredHeight(); //統計所有子項的總高度
}
ViewGroup.LayoutParams params = listView.getLayoutParams();
params.height = totalHeight + (listView.getDividerHeight() * (listAdapter.getCount() - 1));
//listView.getDividerHeight()獲取子項間分隔符占用的高度
//params.height最後得到整個ListView完整顯示需要的高度
listView.setLayoutParams(params);
}
}