ios - 我的后退按钮无法退出我的应用程序

Question

我现在正在使用我的导航项来创建退出按钮(左侧导航项)。在创建嵌入导航 View Controller 的 View Controller 时，似乎我们无法使用 popViewControllerAnimated 和 dismissViewControllerAnimated 退出应用程序。你能告诉我该怎么做吗？

下面是我的嵌入 View Controller 的代码

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    navigationBar =  self.navigationController.navigationBar;

    [navigationBar setTitleTextAttributes: [NSDictionary dictionaryWithObjectsAndKeys:
                                           [UIColor whiteColor], NSForegroundColorAttributeName,
                                            [UIFont fontWithName:@"TitilliumText22L-Medium" size:22.0], NSFontAttributeName,
                                            nil] ];



    UINavigationItem *navigationItem = [[UINavigationItem alloc] initWithTitle:@"TEST SSS"];

    UIButton *button = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, 60, 30)];
    [button setImage:[UIImage imageNamed:@"menu_back.png"] forState:UIControlStateNormal];
    [button addTarget:self action:@selector(buttonClicked:) forControlEvents:UIControlEventTouchUpInside];

    UIBarButtonItem *buttonItemA = [[UIBarButtonItem alloc] initWithCustomView:button];
    navigationItem.leftBarButtonItem = buttonItemA;

    UIButton *buttonA = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, 88, 30)];
    [buttonA setImage:[UIImage imageNamed:@"sss.png"] forState:UIControlStateNormal];
    UIBarButtonItem *buttonItemB = [[UIBarButtonItem alloc] initWithCustomView:buttonA];
    navigationItem.rightBarButtonItem = buttonItemB;
    [navigationBar pushNavigationItem:navigationItem animated:NO];

}

- (UIStatusBarStyle) preferredStatusBarStyle {
    return UIStatusBarStyleLightContent;
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}


- (IBAction)buttonClicked:(id)sender {
    NSLog(@"ssd finish");
    [self.navigationController popViewControllerAnimated:YES|NO];

}

@end

Answer 1

请阅读此链接上的文档，Apple Q&A Link for quit iOS app

这应该可以回答您的问题:-

转到您的 info.plist 并检查 key “应用程序不在后台运行”并将其设置为:-“真”然后当用户按下主页按钮时，应用程序完全退出。

或者如链接所建议的那样弹出一个警告，以便用户知道如何退出应用程序。