检测用户是否处于通话状态栏

Question

如何检测用户是在通话还是网络共享？我有这样的iAd子视图:

_UIiAD = [[self appdelegate] UIiAD];
_UIiAD.delegate = self;

[_UIiAD setFrame:CGRectMake(0,470,320,50)];
[self.view addSubview:_UIiAD];\

当用户通话时,它设置错误了吗？我怎么检测到这个？

Answer 1

UIApplicationDelegate 有这两种方法.

// ObjC
- (void)application:(UIApplication *)application willChangeStatusBarFrame:(CGRect)newStatusBarFrame;   // in screen coordinates
- (void)application:(UIApplication *)application didChangeStatusBarFrame:(CGRect)oldStatusBarFrame;

// Swift
func application(_ application: UIApplication, willChangeStatusBarFrame newStatusBarFrame: CGRect)
func application(_ application: UIApplication, didChangeStatusBarFrame oldStatusBarFrame: CGRect)

而且也有Notifications.

//ObjC
UIApplicationWillChangeStatusBarFrameNotification
UIApplicationDidChangeStatusBarFrameNotification

// Swift
Notification.Name.UIApplicationWillChangeStatusBarFrame
Notification.Name.UIApplicationDidChangeStatusBarFrame

但他们没有发布应用程序,所以我不推荐它.

模拟器有一个有用的工具来测试它.

硬件 - >切换通话状态栏(⌘Y)

我建议你在你的AppDelegate文件上实现这些方法.当状态栏改变它的高度时,将调用它们.其中一个在之前被调用,另一个在变化之后被调用.

假设您希望ViewController在发生更改时通知您,一个选项是发送通知.像这样

首先,添加此属性/变量 AppDelegate

// ObjC
@property (assign, nonatomic) CGRect currentStatusBarFrame;

// Swift
var currentStatusBarFrame: CGRect = .zero

然后,实施 willChangeStatusBarFrame

// ObjC
- (void) application:(UIApplication *)application willChangeStatusBarFrame:(CGRect)newStatusBarFrame
{
    self.currentStatusBarFrame = newStatusBarFrame;
    [[NSNotificationCenter defaultCenter] postNotificationName:@"Status Bar Frame Change"
                                                        object:self
                                                      userInfo:@{@"current status bar frame": [NSValue valueWithCGRect:newStatusBarFrame]}];

}

// Swift
func application(_ application: UIApplication, willChangeStatusBarFrame newStatusBarFrame: CGRect) {
    currentStatusBarFrame = newStatusBarFrame
    NotificationCenter.default.post(
        name: NSNotification.Name(rawValue: "Status Bar Frame Change"),
        object: self,
        userInfo: ["current status bar frame": newStatusBarFrame])
}

我们完成了我们的基础Status Bar Frame Checker.您ViewController需要知道状态栏框架的任何下一部分.

任何时候你想获得状态栏框架,你都喜欢这样

// ObjC
[(AppDelegate*)[[UIApplication sharedApplication] delegate] currentStatusBarFrame]

// Swift
(UIApplication.shared.delegate as! AppDelegate).currentStatusBarFrame

并在更改时收到通知,将其添加到ViewDidLoad方法中.

在ObjC

[[NSNotificationCenter defaultCenter] addObserver:self
                                         selector:@selector(statusBarFrameChanged:)
                                             name:@"Status Bar Frame Change"
                                           object:[[UIApplication sharedApplication] delegate]];

并实现此方法

- (void) statusBarFrameChanged:(NSNotification*)notification
{
    CGRect newFrame = [[notification.userInfo objectForKey:@"current status bar frame"] CGRectValue];
    NSLog(@"new height %f", CGRectGetHeight(newFrame));
}

在斯威夫特

    NotificationCenter.default.addObserver(forName: NSNotification.Name(rawValue: "Status Bar Frame Change"),
                                           object: nil,
                                           queue: nil) { (note) in
                                            guard let currentStatusBarFrame = note.userInfo?["current status bar frame"] as? CGRect else {return}
                                            print("New Height", currentStatusBarFrame.height)
    }