iOS 判断来电状态CTCallCenter代码块不执行问题的解决

项目中需要检测来电状态,使用了CTCallCenter,在AppDelegate中,代码如下:




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

        if ([call.callState isEqualToString: CTCallStateDialing]){

            NSLog(@"Call Dialing");

        }

        if (call.callState == CTCallStateConnected){

            NSLog(@"Call Connected");

        }

        if (call.callState == CTCallStateDisconnected){

        }

    };




可奇怪的是无论如何都不执行....来电接听挂断神马的根本不走Block.

找了半天度娘谷哥也无解.后来实然想到,把

CTCallCenter *callCenter写成了成员变量,然后就正常了...

原来是ARC模式下,一出代码块,callCenter就被释放了.