ViewGroup

   有关Android的ViewGroup的使用例子比较少，早期的Android Home中使用到了这个ViewGroup相对于GridView来说ViewGroup更为灵活，下面是Android中一段经典的示例代码   public class FitCenterFrameLayout extends ViewGroup {    public FitCenterFrameLayout(Context context) {        super(context);    }     public FitCenterFrameLayout(Context context, AttributeSet attrs) {        super(context, attrs);    }     @Override    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {  //修改尺寸        final int width = resolveSize(getSuggestedMinimumWidth(), widthMeasureSpec);        final int height = resolveSize(getSuggestedMinimumHeight(), heightMeasureSpec);        setMeasuredDimension(width, height);         int childWidthSpec = MeasureSpec.makeMeasureSpec(width, […]