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in Technique[技术] by (71.8m points)

ios - popTOViewController

I have a button named 'HOME'. In that button action I have the following code:

[self.navigationController popToViewController:[self.navigationController.viewControllers objectAtIndex:1] animated:YES];

When I click this button my app crashes.

Changing the index from 1 to 2, then it pops the view perfectly.

[self.navigationController popToViewController:[self.navigationController.viewControllers objectAtIndex:2] animated:YES];

My view sequence is Page1 --> Page2 --> Page3

I want to go from Page3 to Page1 but the app crashes. From Page3 to Page2 it works fine.

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by (71.8m points)

Try this.

Where I have written SeeMyScoresViewController you should write your View Controller class on which you have to go.(eg. Class of Home)

NSArray *viewControllers = [[self navigationController] viewControllers];
for( int i=0;i<[viewControllers count];i++){
    id obj=[viewControllers objectAtIndex:i];
    if([obj isKindOfClass:[SeeMyScoresViewController class]]){
        [[self navigationController] popToViewController:obj animated:YES];
        return;
    }
}

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