ios – 向UITextField输入右视图UIImageView

我有一个目标操作,当按下按钮时,我验证UITextFields：

// Get the text from the UITextField
Nsstring *nameStr = _name.text;

_name.rightView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"error.png"]];
[self.view addSubview:_name];

if (nameStr.length == 0)
{
    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Invalid Name"
                                                    message:@"You must enter a name."
                                               delegate:nil
                                          cancelButtonTitle:@"OK"
                                          otherButtonTitles:nil];
    [alert show];
}

我的UITextFields添加到viewDidLoad中的视图,如下所示：

[self.view addSubview:_name];

如何使右视图UIImageView出现？

解决方法

你确定你没有丢失UITextField框架吗？你正在设置rightviewmode吗？

这是我刚才写的一个例子,似乎工作正常.

UITextField *rightField = [[UITextField alloc] initWithFrame:CGRectMake(0,140,50)];
rightField.backgroundColor = [UIColor redColor]; // For testing purpose
rightField.rightviewmode = UITextFieldviewmodeAlways;// Set rightview mode

UIImageView *rightimageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"Tick_white_color"]];
rightField.rightView = rightimageView; // Set right view as image view

[self.view addSubview:rightField];

结果如下：