ios 拨打电话系统回调函数

来源：互联网发布：漫威宇宙知乎编辑：程序博客网时间：2024/05/21 06:47

当我们使用系统的拨打电话函数拨打电话时，想获取现在电话的状态，可以使用下面的函数获得状态。

使用方法:

1.引入CoreTelephony.frameWork

2. 在APPDelegate中做如下定义与说明

#import <CoreTelephony/CTCall.h>

#import <CoreTelephony/CTCallCenter.h>

@interface AppDelegate () {    CTCallCenter *callCenter;}@end

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions{    [self callCallBack];}

- (void)callCallBack{    callCenter = [[CTCallCenter alloc] init];    callCenter.callEventHandler = ^(CTCall* call) {        if ([call.callState isEqualToString:CTCallStateDisconnected])        {            NSLog(@"Call has been disconnected");        }        else if ([call.callState isEqualToString:CTCallStateConnected])        {            NSLog(@"Call has just been connected");        }        else if([call.callState isEqualToString:CTCallStateIncoming])        {            NSLog(@"Call is incoming");        }        else if ([call.callState isEqualToString:CTCallStateDialing])        {            NSLog(@"call is dialing");        }        else        {            NSLog(@"Nothing is done");        }    };}

3. 在ViewController中调用系统的拨打电话函数，然后就会回调刚刚上面的callcallBack中的ios系统提供的方法。

[[UIApplication sharedApplication] openURL:[NSURL URLWithString:str]]

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