View设置宽高

public class ViewMeasuare extends View {

    public ViewMeasuare(Context context, AttributeSet attrs) {
        super(context, attrs);
    }
    
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
        setMeasuredDimension(780, 120);
    }
    
}

setMeasuredDimension 这个方法的确把我实实在在的坑了一把