java.lang.ClassCastException: android.widget.RelativeLayout$LayoutParams cannot be cast to android.widget.AbsListView$LayoutParams

java.lang.ClassCastException: android.widget.RelativeLayout$LayoutParams cannot be cast to android.widget.AbsListView$LayoutParams

FrameLayout的父控件是一個LinearLayout控件，問題出在，LinearLayout為子控件分配空間的時候，獲取FrameLayout的LayoutParams的必須為LinearLayout.LayoutParams，而非FrameLayout.LayoutParams。

          簡單的舉個栗子說明一下：最外層有ReLativeLayout A，里面有兩個LinearLayout B、C，而B中又有一個一個FrameLayout D。如果要在代碼里設置B的LayoutParams,B的LayoutParams要為RelativeLayout.LayoutParams。

RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT);   B.setLayoutParams(params);

         而D要設置的話，需要：

LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(LayoutParams.MATCH_PARENT, 0);   params.weight = 8;   D.setLayoutParams(params);



還有ListView.LayoutParams