仅检测到来电的CallStateDisconnected，而非来自我的应用程序的呼叫。

Question

仅检测到来电的CallStateDisconnected，而非来自我的应用程序的呼叫。

12

如果我从我的应用程序发起呼叫，则无法检测到通话结束（状态为CallStateDisconnected）。但是，如果我的应用程序处于活动状态时接收到呼叫，我可以检测到该状态。当呼叫从我的应用程序开始时，我还会两三次接收到状态CTCallStateDialing。这在iOS5下曾经有效，但在iOS6中出现了问题。

我的应用程序代理代码：

 self.callCenter = [[CTCallCenter alloc] init];
self.callCenter.callEventHandler = ^(CTCall* call) {

    // anounce that we've had a state change in our call center
    NSDictionary *dict = [NSDictionary dictionaryWithObject:call.callState forKey:@"callState"]; //BREAKPOINT HERE

    [[NSNotificationCenter defaultCenter] postNotificationName:@"CTCallStateDidChange" object:self userInfo:dict]; 

};

奇怪的是，如果我在callEventHandler块中设置断点并在调用完成后恢复执行，则可以正确获取CallStateDisconnected。然后我在我的视图控制器中订阅通知，并在接收到它们时执行此代码：

- (void)ctCallStateDidChange1:(NSNotification *)notification
 {
  NSString *call = [[notification userInfo] objectForKey:@"callState"];


if ([call isEqualToString:CTCallStateDisconnected])
{
    NSLog(@"Call has been disconnected");

}
else if([call isEqualToString:CTCallStateDialing])
{

    NSLog(@"Call start");
}
else if ([call isEqualToString:CTCallStateConnected])
{
    NSLog(@"Call has just been connected");
}
else if([call isEqualToString:CTCallStateIncoming])
{
    NSLog(@"Call is incoming");
}
else
{
    NSLog(@"None");
}

}

我从我的应用程序中这样发起电话:

        UIWebView *callWebview = [[UIWebView alloc] init];
        [self.view addSubview:callWebview];
        NSURL *telURL = [NSURL URLWithString:number];
        [callWebview loadRequest:[NSURLRequest requestWithURL:telURL]];

我还记录了应用程序状态，然后获得 - (void)applicationDidBecomeActive:(UIApplication *)application

在我开始通话之后，我进入- (void)applicationDidEnterBackground:(UIApplication *)application

通话结束后返回到- (void)applicationDidBecomeActive:(UIApplication *)application。

DidBecomeActive在通话发生之后、进入后台之前被调用，这很奇怪吗？

- DixieFlatline

它仍然可以在iOS 5上运行，我刚试过了，并且看到了“呼叫开始”和“呼叫已断开”的信息。appDelegate状态转换也都很合理。明天才能在iOS 6上尝试。 - emrys57

如果您明天能在iOS6上尝试一下，那将非常有帮助。谢谢。 - DixieFlatline

当您在没有断点的情况下运行它时，与有断点时记录的内容有何不同？我知道如果您等到调用完成后才恢复，则应用程序仅接收单个更新（在此情况下为通话断开连接），否则您将获得所有更新。如果没有断点，您只是一直收到“呼叫开始”，还是什么都没有？除了断开连接状态，您是否会收到所有通知？ - Metabble

只有在没有断点的情况下才记录“调用开始”，而在执行暂停（断点）期间停止调用时，记录“调用开始”和“通话已断开”。 - DixieFlatline

1个回答

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可以查看英文原文，
原文链接

- emrys57 · Accepted Answer

以下是iOS 5手机的日志记录：

2012-12-02 22:00:00.252 TestPhone[2297:707] didFinishLaunchingWithOptions:
2012-12-02 22:00:00.352 TestPhone[2297:707] applicationDidBecomeActive:
2012-12-02 22:00:06.708 TestPhone[2297:707] applicationWillResignActive:
2012-12-02 22:00:10.582 TestPhone[2297:1c03] Call start
2012-12-02 22:00:11.016 TestPhone[2297:707] applicationDidBecomeActive:
2012-12-02 22:00:12.536 TestPhone[2297:707] applicationWillResignActive:
2012-12-02 22:00:12.564 TestPhone[2297:707] applicationDidEnterBackground:
2012-12-02 22:00:36.543 TestPhone[2297:707] applicationWillEnterForeground:
2012-12-02 22:00:36.769 TestPhone[2297:707] applicationDidBecomeActive:
2012-12-02 22:00:36.840 TestPhone[2297:2e07] Call has been disconnected
2012-12-02 22:00:36.854 TestPhone[2297:707] applicationWillResignActive:
2012-12-02 22:00:49.885 TestPhone[2297:707] applicationDidBecomeActive:

这是来自iOS 6手机的日志：

2012-12-03 06:27:55.401 TestPhone[7734:907] didFinishLaunchingWithOptions:
2012-12-03 06:27:55.462 TestPhone[7734:907] applicationDidBecomeActive:
2012-12-03 06:28:01.396 TestPhone[7734:907] applicationWillResignActive:
2012-12-03 06:28:04.345 TestPhone[7734:907] applicationDidBecomeActive:
2012-12-03 06:28:04.401 TestPhone[7734:1803] Call start
2012-12-03 06:28:05.824 TestPhone[7734:907] applicationWillResignActive:
2012-12-03 06:28:05.826 TestPhone[7734:907] applicationDidEnterBackground:
2012-12-03 06:28:17.318 TestPhone[7734:907] applicationWillEnterForeground:
2012-12-03 06:28:17.329 TestPhone[7734:907] applicationDidBecomeActive:

“断开连接”的消息刚刚消失了。（这不是答案，只是一个观察结果。）

这是我使用的代码。我在xcode中创建了一个单视图应用程序，在xib中创建了一个单个按钮，这是我的整个UIViewController：

- (void)viewDidLoad {
    [super viewDidLoad];
    self.callCenter = [[CTCallCenter alloc] init];
    self.callCenter.callEventHandler = ^(CTCall* myCall) {
        NSString *call = myCall.callState;
        if ([call isEqualToString:CTCallStateDisconnected])
            NSLog(@"Call has been disconnected");
        else if([call isEqualToString:CTCallStateDialing]) 
            NSLog(@"Call start");
        else if ([call isEqualToString:CTCallStateConnected])
            NSLog(@"Call has just been connected");
        else if([call isEqualToString:CTCallStateIncoming])
            NSLog(@"Call is incoming");
        else
            NSLog(@"None");
    };
}

- (IBAction)callButtonPressed:(id)sender {
    NSString *number = @"tel:01234567890";
    UIWebView *callWebview = [[UIWebView alloc] init];
    callWebview.frame = self.view.frame;    
    [self.view addSubview:callWebview];
    NSURL *telURL = [NSURL URLWithString:number];
    [callWebview loadRequest:[NSURLRequest requestWithURL:telURL]];
}
@end