CODEWITHSUNDEEP
iosobjective-cuinavigationcontrollernsobjectclass-method
Tulon
Tulon

Reputation: 4126

Access UINavigationController from classmethod

I've a viewController called AudioViewController. In that, I've this method:

- (IBAction)stopAction:(id)sender
{
    [self.audioClass stop];
}

I've a NSObject class called AudioClass. In that, I've these methods:

-(void) stop
{
    if (!recorder.recording)
    {
        [player stop];
        player.currentTime = 0;

        [self.recordOrPauseButton setEnabled:YES];
        [self.stopButton setEnabled:NO];

        [self alertMessage];
    }
    else
    {
        [recorder stop];

        AVAudioSession *audioSession = [AVAudioSession sharedInstance];
        [audioSession setActive:NO error:nil];
        [self alertMessage];
    }
}


-(void) alertMessage
{
    UIAlertView *stopAlert = [[UIAlertView alloc] initWithTitle: @"Done!"
                                                        message: @"Do you want to save it?"
                                                       delegate: self
                                              cancelButtonTitle:@"Cancle"
                                              otherButtonTitles:@"Save", nil];
    [stopAlert show];
}


- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger) buttonIndex
{
    if (buttonIndex == 0)
    {
        // this is the cancel button
    }
    else
    {
        [self.sqLiteDB insertDataIntoTable:soundFilePath And:outputFileURL];
        [self.navigationController popViewControllerAnimated:YES];
    }
}

Now, here in
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger) buttonIndex
it is not recognizing the
[self.navigationController popViewControllerAnimated:YES];.
Because, It is in the NSObject class. How can I access that navigationController and return from AudioViewControlelr to it's previous ViewController?

If any one have any solution, please share it with me. Thanks a lot in advance. Have a good day.

Upvotes: 0

Views: 109

Answers (1)

Craig Siemens
Craig Siemens

Reputation: 13296

iOS development is based on the Model View Contorller design pattern. Your AudioViewControlelr is obviously a controller and your AudioClass would actually be a model. In MVC, models should never directly modify views, this includes modifying UINavigationControllers and displaying UIAlertViews.

In your case, your AudioViewController should call stop on the AudioClass object and show the UIAlertView.

On a side note, AudioRecorder would be a better name than AudioClass. It more accurately describes what the class does, as opposed to just telling us it's a class which we already know.

Upvotes: 1

Related Questions