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

报错日志：

 报错代码：

场景：调整左右边距时报错

 LinearLayout.LayoutParams lp =
                        (LinearLayout.LayoutParams) lightNavStartNavFocusArea.getLayoutParams();
                lp.leftMargin = leftMargin;
                lightNavStartNavFocusArea.setLayoutParams(lp);

解决方法：使用ViewGroup.MarginLayoutParams 代替 LinearLayout.LayoutParams

ViewGroup.MarginLayoutParams lp =
                        (ViewGroup.MarginLayoutParams) lightNavStartNavFocusArea.getLayoutParams();
                lp.leftMargin = leftMargin;
                lightNavStartNavFocusArea.setLayoutParams(lp);

使用该原因：该场景主要用于调整左右margin边距

而不管是线性布局，还是相对布局都继承自ViewGroup.MarginLayoutParams