LinearLayout layout = (LinearLayout) mInflater.inflate( R.layout.cell_check_item, null); LinearLayout.LayoutParams param = new LinearLayout.LayoutParams( UPDeviceInfo.getDeviceWidth(), LayoutParams.WRAP_CONTENT); rootLayout.addView(convertView, param);
我希望手动设置layout的宽度，结果就报错（虽然很小的几率报错）
java.lang.ClassCastException: android.view.ViewGroup$LayoutParams cannot be cast to android.widget.AbsListView$LayoutParams
解决方法：换成从原来的view中获取LayoutParams，而不是新建一个LayoutParams
LinearLayout.LayoutParams param = (android.widget.LinearLayout.LayoutParams) checkLayout
.getLayoutParams();
param.width = UPDeviceInfo.getDeviceWidth();
看来，当一个View已经有了LayoutParams，最好不要添加一个新的LayoutParams。
android.view.ViewGroup$LayoutParams cannot be cast to android.widget.AbsListView$LayoutParams
原文：http://www.cnblogs.com/liupeipro/p/4501066.html