Question

我已经使用此方法How do I get my AVPlayer to play while app is in background?让AVPlayer在后台播放，以便用户可以在浏览Safari时进行监听等。现在只有问题是AVPlayer会在有来电时继续播放并停留在电话中播放。有没有办法捕获来电和结束通话事件，以便AVPlayer可以手动停止和启动？

Answer 1

通过coreTelephony框架，我们必须找到或检测来电。在那里，您必须发起本地通知才能停止AVPlayer。导入之后做这样的

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

        if ([call.callState isEqualToString:CTCallStateDisconnected])
        {
            NSLog(@"Call has been disconnected");
        }
        else if([call.callState isEqualToString:CTCallStateDialing])
        {
            NSLog(@"Call start");
        }
        else if ([call.callState isEqualToString:CTCallStateConnected])
        {

          NSLog(@"Call has just been connected");
        }
        else if([call.callState isEqualToString:CTCallStateIncoming])
        {
            NSLog(@"Call is incoming");
            // You have to initiate/post your local notification through NSNotification center like this 
        [[NSNotificationCenter defaultCenter] postNotificationName:@"stopAVPlayer" object:nil];
        } else
        {
            NSLog(@"None of the conditions");
        }


    };

请参阅：https://developer.apple.com/library/ios/navigation/#section=Frameworks&topic=CoreTelephony

Answer 2

您可以使用CallKit立即获取电话事件。（iOS 10.0以上）这对我有好处。

#import <CallKit/CallKit.h>

@interface ViewController ()<CXCallObserverDelegate> {
    CXCallObserver *_center;
}

-（void）viewDidLoad

_center = [[CXCallObserver alloc] init];
dispatch_queue_t queue = dispatch_queue_create("THIS_IS_A_CALL",NULL);
[_center setDelegate:self queue:queue];

委托

- (void)callObserver:(CXCallObserver *)callObserver callChanged:(CXCall *)call {

    NSString *tag = @"callObserver";
    NSString *content = @"";

    if (call.isOutgoing) {
        content = @"call.isOutgoing";
    }
    if (call.hasEnded) {
        content = @"call.hasEnded";
    }

    if (call.hasConnected) {
        content = @"call.hasConnected";
    }

    if (call.isOnHold) {
        content = @"call.isOnHold";
    }
    NSLog(@"%@ - %@", tag, content);
}

更多详细信息：https://developer.apple.com/documentation/callkit

如何手动中断AVPlayer的来电

2 个答案: