在 iOS 10 上检测语音通话开始/结束状态

Question

我正在尝试检测 iOS 10 上的通话状态。 我已经在 iOS 9.3 上测试过了，它运行良好。 但是在 iOS 10 上，CTCallCenter 已被弃用，所以我使用了 Callkit。

我无法检测到通话状态。 我找不到任何正确答案。

我的代码是：

@property (nonatomic, strong) CXCallObserver *callObserver;

...

self.callObserver = [[CXCallObserver alloc] init];
[callObserver setDelegate:self queue:nil];

...

- (void)callObserver:(CXCallObserver *)callObserver callChanged:(CXCall *)call {
    if (call.hasConnected) {
        NSLog(@"connected/n");
        // perform necessary actions
    } else if(call.hasEnded) {
         NSLog(@"disconnected/n");
    }
}

Answer 1

此代码对我有用。唯一的区别是我为观察者提供了一个调度队列，而不是使用主队列。

#import <CallKit/CXCallObserver.h>
#import <CallKit/CXCall.h>

@interface CallStatusIos10 : NSObject <CXCallObserverDelegate>
{
    dispatch_queue_t dq;
}
@property (nonatomic, strong) CXCallObserver* observer;

@end

@implementation CallStatusIos10

@synthesize observer;

-(id) init
{
    if(self = [super init])
    {
        observer = [[CXCallObserver alloc] init];
        // Hang on to a reference to the queue, as the
        // CXCallObserver only maintains a weak reference
        dq = dispatch_queue_create("my.ios10.call.status.queue", DISPATCH_QUEUE_SERIAL);
        [observer setDelegate: self queue: dq];
    }
    return self;
}

#pragma mark - CXCallObserverDelegate

- (void)callObserver:(CXCallObserver *)callObserver callChanged:(CXCall *)call
{
    NSString* callId = [call.UUID UUIDString];

    if(!call.hasConnected && !call.hasEnded && !call.onHold)
    {
        if(call.outgoing)
        {
            // outgoing call is being dialling;
        }
        else
        {
            // incoming call is ringing;
        }
    }
    else if(call.onHold)
    {
        // call is on hold;
    }
    else if(call.hasEnded)
    {
        // call has disconnected;
    }
    else if(call.hasConnected)
    {
        // call has been answered;
    }
}

@end

Answer 2

试试这个

Appdelegate.h

#import <CoreTelephony/CTCallCenter.h>
#import <CoreTelephony/CTCall.h>
...
@property (nonatomic, strong) CTCallCenter* callCenter;

AppDelegate.m

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{  
   .... 
  self.callCenter = [[CTCallCenter alloc] init];
  [self handleCall]; //Call this method when you want to use it
   .... 
}

-(void)handleCall
{
    self.callCenter.callEventHandler = ^(CTCall *call){

       if ([call.callState isEqualToString: CTCallStateConnected])
       {
          //NSLog(@"call stopped");
       }
       else if ([call.callState isEqualToString: CTCallStateDialing])
       {
        }
       else if ([call.callState isEqualToString: CTCallStateDisconnected])
       {
          //NSLog(@"call played");
        }
       else if ([call.callState isEqualToString: CTCallStateIncoming])
       {
           //NSLog(@"call stopped");
       }
     };
  }

取自：How to detect call incoming programmatically

了解更多：CoreTelephony Framework iOS 7