iOS电话状态监听

App电话状态监听

一般这种获取系统状态变化的代码都是写在AppDelegate里面，在didFinishLaunchingWithOptions方法里面调用getCallState 方法就行了

第一步：导入系统头文件

//导入系统的头文件
import <CoreTelephony/CTCallCenter.h>
import <CoreTelephony/CTCall.h>

第二步：申明全局变量callCenter

@property (nonatomic, strong) CTCallCenter *callCenter;

第三步：调用方法

- (void)getCallState {
    self.callCenter = [[CTCallCenter alloc] init];
    self.callCenter.callEventHandler = ^(CTCall* call) {
        if ([call.callState isEqualToString:CTCallStateDisconnected])
        {
            NSLog(@"挂断了电话咯Call has been disconnected");
        }
        else if ([call.callState isEqualToString:CTCallStateConnected])
        {
            NSLog(@"电话通了Call has just been connected");
        }
        else if([call.callState isEqualToString:CTCallStateIncoming])
        {
            NSLog(@"来电话了Call is incoming"); 
        }
        else if ([call.callState isEqualToString:CTCallStateDialing])
        {
            NSLog(@"正在播出电话call is dialing");
        }
        else
        {
            NSLog(@"嘛都没做Nothing is done");
        }
    };
}

注：CTCallCente必须用全局

以上就是监听电话状态方法~

慢慢来，一步一个巴掌印。。。。。