我想处理ios中的通话状态

我想获取电话的状态，无论是已拨、已连接还是已断开......

我尝试了自己，但无法获得状态。

NSString *phoneNumber = [@"telprompt://" stringByAppendingString:@"9723539389"];
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:phoneNumber]];

CTCallCenter *callCenter = [[CTCallCenter alloc] init];
callCenter.callEventHandler=^(CTCall* call)
{
    if(CTCallStateDialing)
    {
        NSLog(@"Dialing");
    }
    if(CTCallStateConnected)
    {
        NSLog(@"Connected");
    }
    if(CTCallStateDisconnected)
    {
        NSLog(@"Disconnected");
    }
};

但问题是 CTCallCenter 块从未调用过...我目前在 iOS 7 中工作

您应该检查 CTCall 的 callState 属性才能捕获它

使用蜂窝呼叫的 CTCall 对象获取呼叫的标识符并确定呼叫的状态。

 extern NSString const *CTCallStateDialing;
 extern NSString const *CTCallStateIncoming;
 extern NSString const *CTCallStateConnected;
 extern NSString const *CTCallStateDisconnected;

是字符串常量。你的 for 循环没有意义。

NSString *phoneNumber = [@"telprompt://" stringByAppendingString:@"9723539389"];
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:phoneNumber]];

self.callCenter = [[CTCallCenter alloc] init];

[callCenter setCallEventHandler:^(CTCall* call)
{
    if ([call.callState isEqualToString: CTCallStateConnected])
    {
        NSLog(@"Connected");
    }
    else if ([call.callState isEqualToString: CTCallStateDialing])
    {
        NSLog(@"Dialing");
    }
    else if ([call.callState isEqualToString: CTCallStateDisconnected])
    {
        NSLog(@"Disconnected");

    } else if ([call.callState isEqualToString: CTCallStateIncoming])
    {
        NSLog(@"Incoming");
    }

}];

NOTE:

  @property(nonatomic, strong) CTCallCenter *callCenter;

应该在 Appdelegate 中声明并保留它。否则，它将被视为局部变量并在退出循环后立即释放

UPDATES:

回答“callCenter在appdelegate中声明，我如何将它与self一起使用？以及当[]添加到该块时的其他内容，然后它显示错误等于“预期']'””

将 self.callCenter 替换为这些行

   YourApplicationDelegateClass *appDel =(YourApplicationDelegateClass*)[UIApplication sharedApplication].delegate;

   appDel.callCenter =  [[CTCallCenter alloc] init];