如何从Xcode的导航栏上的后退按钮删除文本? [英] How do i remove text from back button on navbar within Xcode?

问题描述

我通过在应用程序委托中添加以下代码来将箭头自定义图像设置到导航栏，它可以工作，但是现在我希望完全删除后退按钮的文本.

I set an arrow custom image to navigation bar by adding the following code in app delegate, it works but now im looking to remove the text completely for back button.

UIImage * backButtonImage = [UIImage imageNamed: @"BackButtonGrey.png"];
backButtonImage = [backButtonImage stretchableImageWithLeftCapWidth: 15.0 topCapHeight: 30.0];
[[UIBarButtonItem appearance]  setBackButtonBackgroundImage: backButtonImage  forState: UIControlStateNormal  barMetrics: UIBarMetricsDefault];

推荐答案

我就是这样，对我来说效果很好:-)

I just did it like this, worked fine for me :-)

UIImage *backButtonImage = [UIImage imageNamed:@"navigationBarBack.png"];
UIButton *backButton = [UIButton buttonWithType:UIButtonTypeCustom];

[backButton setImage:backButtonImage
            forState:UIControlStateNormal];

backButton.frame = CGRectMake(0, 0, backButtonImage.size.width, backButtonImage.size.height);

[backButton addTarget:self
               action:@selector(popViewController)
     forControlEvents:UIControlEventTouchUpInside];

UIBarButtonItem *backBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:backButton];
self.navigationItem.leftBarButtonItem = backBarButtonItem;

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