Need to hide text in UITextField while editing and should display another text
<p>New to iOS development. Need help regarding <code>UITextField</code>  delegate methods.
my problem is I have <code>UITextField</code> </p>

<p>if i enter some "XYZ" text in textfield it should display some other text like which i want while i'm editing only it should done.</p>

<pre><code>- (void)textFieldDidBeginEditing:(UITextField *)textField
{    
    [self.requestTextFiled setReturnKeyType:UIReturnKeyDone];

    [NSTimer scheduledTimerWithTimeInterval:.1 target:nil selector:@selector(checkingTheQuestion) userInfo:nil repeats:YES];   
}

-(void)checkingTheQuestion
{    

}
</code></pre>

<p>I tried if by call checkingTheQuestion but I'm not able to do.
Please Help me.</p>

<p>Thanks in advance. </p>
