android内部搜索控件下的子控件。比如：在某个VIEW对象里（LinearLayout）中 循环所有控件

/**
* 遍历所有view
*
* @param viewGroup
*/
public void traversalView(ViewGroup viewGroup) {
int count = viewGroup.getChildCount();
for (int i = 0; i < count; i++) {
View view = viewGroup.getChildAt(i);
if (view instanceof ViewGroup) {
traversalView((ViewGroup) view);
} else {
doView(view);
}
}
}

/**
* 处理view
*
* @param view
*/
private void doView(View view) {
}