我将imageView设置为文本字段的rightView。这是我的代码:UITextField*textField=[[UITextFieldalloc]initWithFrame:controlFrame];[textFieldsetBorderStyle:UITextBorderStyleRoundedRect];[textFieldsetBackgroundColor:[UIColorwhiteColor]];CGRectimageViewFrame=CGRectMake(controlFrame.origin.x+controlFrame.size.width-20,contr