在IOS中自定义后退按钮

Question

如何使用barmetrics在iOS中没有Text的自定义后退按钮？

我想制作像http://a397.phobos.apple.com/us/r1000/081/Purple/v4/e6/be/2d/e6be2d9e-dc95-7e44-b1ed-9386fa9f4d02/mzl.zwjkpepo.320x480-75这样的东西.JPG

Answer 1

[[UIBarButtonItem appearance]
            setBackButtonBackgroundImage:[UIImage imageNamed:@"back_button.png"]
            forState:UIControlStateNormal barMetrics:UIBarMetricsDefault];

您可以将其放置在应用程序委托中,它会将背景图像设置为应用程序中的所有后退按钮(当然,对于该控件状态和条形指标).

编辑: 如果你想要不同的东西,那么使用这个代码:

- (void)setBackButton
{
    UIButton *backButton =  [UIButton buttonWithType:UIButtonTypeCustom];
    [backButton setImage:[UIImage imageNamed:@"BackButton.png"] forState:UIControlStateNormal];
    [backButton addTarget:self action:@selector(backButtonTapped:) forControlEvents:UIControlEventTouchUpInside];[button setFrame:CGRectMake(0, 0, 32, 32)];

    self.navigationItem.leftBarButtonItem = [[[UIBarButtonItem alloc] initWithCustomView:backButton] autorelease];
}

- (void)backButtonTapped:(id)sender
{
    [self.navigationController popViewControllerAnimated:YES];
}