Question

当应用首次尝试获取用户位置时，会提示他们“想要使用您当前的位置”，他们可以点击“不允许”或“确定”。有没有办法找出用户是否已经确定或不允许？我正在尝试让MKMapView显示用户当前位置，但我想根据用户选择采取不同的操作。

通常你会认为有一个代表来获取这些信息，但似乎没有。

提前感谢您的帮助。

Answer 1

您获取用户位置的第一个电话将失败，并显示一条错误消息，告知您用户已拒绝了位置服务。您的CLLocationManagerDelegate方法didFailWithError将被调用，如下所示。（常量在CLError.h）中定义

- (void)locationManager:(CLLocationManager*)aManager didFailWithError:(NSError*)anError
{
    switch([anError code])
    {
    case kCLErrorLocationUnknown: // location is currently unknown, but CL will keep trying
    break;

    case kCLErrorDenied: // CL access has been denied (eg, user declined location use)
    message = @"Sorry, flook has to know your location in order to work. You'll be able to see some cards but not find them nearby";
    break;

    case kCLErrorNetwork: // general, network-related error
    message = @"Flook can't find you - please check your network connection or that you are not in airplane mode";
    }
}

检查用户是否允许该应用使用其位置

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