Is it possible to NOT dismiss a UIAlertView

Question

The UIAlertviewDelegate protocol has several optional methods including:

- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonInd         


        

Answer 1

Yes. Subclass UIAlertView and then overload -dismissWithClickedButtonIndex:animated:, e.g.

@implementation MyAlertView 
-(void)dismissWithClickedButtonIndex:(NSInteger)buttonIndex animated:(BOOL)animated {
   if (buttonIndex should not dismiss the alert)
      return;
   [super dismissWithClickedButtonIndex:buttonIndex animated:animated];
}
@end

---

Unofficially you can define a

-(void)alertSheet:(UIAlertSheet*)sheet buttonClicked:(id)button;

method to the delegate which will make it bypass -dismissWithClickedButtonIndex:animated:, but it's undocumented, so I don't know whether it's suitable for you.

Answer 2

In my opinion: There's no reason to keep alertView. Even if you wanna keep it, just think about "re-show" it, by keeping a reference, then call [alertView show] ==> NO NEED TO SUBCLASS ANYTHING. Good news, huh?

Answer 3

willPresentAlertView:, didPresentAlertView:, alertView:willDismissWithButtonIndex:, and alertView:didDismissWithButtonIndex: are for tracking the start and end of UIAlertView's animations.

Applications that don't need to track UIAlertView's animations can simply use alertView:clickedButtonAtIndex:. The docs for that method say "the receiver is automatically dismissed after this method is invoked."

Answer 4

#import "MLAlertView.h"

@implementation MLAlertView


-(void)dismissWithClickedButtonIndex:(NSInteger)buttonIndex animated:(BOOL)animated {
}

-(void)dismissNow:(NSInteger)buttonIndex  {
     [super dismissWithClickedButtonIndex:buttonIndex animated:YES];
}

Answer 5

WARNING

From some sources I have heard that few app have got rejected following this process. I was lucky in my case during iOS6 so I am showing code here. Use on your own risk :-/

Subclassing is the best way. Create a bool flag for alert should stay or not.

This is the Subclass of UIAlertView

//
//  UICustomAlertView.h
//

#import <UIKit/UIKit.h>

@interface UICustomAlertView : UIAlertView
{
    
}
@property(nonatomic, assign) BOOL dontDisppear;
@end

//
//  UICustomAlertView.m
//

#import "UICustomAlertView.h"

@implementation UICustomAlertView

- (id)initWithFrame:(CGRect)frame
{
    self = [super initWithFrame:frame];
    if (self) {
        // Initialization code
    }
    return self;
}

-(void)dismissWithClickedButtonIndex:(NSInteger)buttonIndex animated:(BOOL)animated {

    if(self.dontDisppear)
        return;
    [super dismissWithClickedButtonIndex:buttonIndex animated:animated];
}
@end

And this is how I used it into my code

if(![txtUsername.text isEqualToString:@"admin"] && ![txtPassword.text isEqualToString:@"admin"])
{
     alertLogin.dontDisppear = YES;
     alertLogin.message = NSLocalizedString(@"my_alert", nil);
}
else
{
     alertLogin.dontDisppear = NO;
     // proceed
}