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：