質問

Following a previous answer, I am implementing this piece of code to add a UIBarButtonItem to my viewController:

[self.navigationItem setHidesBackButton:YES];

UIBarButtonItem *backButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemRewind target:self action:selector(backButton:)];
backButton.tintColor = [UIColor redColor];

self.navigationItem.rightBarButtonItem = backButton;

The error warning is:

Expected )

at backButton declaration line.

I have searched the internet to find the valid format of the declaration, but I think it is correct as it is now, but the compiler shows the error warning.

Any help is welcome.

役に立ちましたか?

解決

UIBarButtonItem *backButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemRewind target:self action:@selector(backButton:)];
backButton.tintColor = [UIColor redColor];

self.navigationItem.rightBarButtonItem = backButton;
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