摘要： UIButton* buttonByTag = (UIButton*)[self viewWithTag:100]; //通过tag获得相应的uibutton if( buttonByTag != nil ) [buttonByTag removeFromSuperview];//如果button不为空，则清除之前的显示//初始化button UIButton* button = [UIButton buttonWithType:UIButtonTypeCustom]; button.tag = 100; UIIm... 阅读全文