Iphone 核心位置警报

我在O'Reilly教程中看到了以下警报：

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我不知道如何触发这些警报。请你告诉我好吗？使用ios6的应用程序好吧，它非常简单。它被称为

UIAlertView

，非常常见于发出通知。它们应该用于通知用户一些事情，而不是用于交互

在编码方面，以下是一些基本设置文本：

UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Alert" message:@"Alert Body" delegate:self cancelButtonTitle:@"Dismiss" otherButtonTitles:nil, nil];

要显示警报，请执行以下操作：

[alert show];

如果需要其他按钮标题，则需要将

委托

设置为

self

，并在.h文件中与

UIAlertViewDelegate

保持一致。您基本上希望实现

ClickedButtonIndex:

方法，并使用索引找出用户按下的按钮并执行操作

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这是访问当前位置时发出的警报，当您使用

请阅读更多信息

-(void)getLocation
{
    locationManager = [[CLLocationManager alloc] init];
    locationManager.delegate = self;
    locationManager.distanceFilter = kCLLocationAccuracyHundredMeters;
    locationManager.desiredAccuracy = kCLLocationAccuracyBest;

    NSLog(@"eee%f",locationManager.location.coordinate.latitude);
    // Start updating location changes.
    [locationManager startUpdatingLocation];
}


- (void)startUpdatingCurrentLocation
{
    //NSLog(@"STARTUPDATELOCATION");
    // if location services are restricted do nothing
    if ([CLLocationManager authorizationStatus] == kCLAuthorizationStatusDenied ||
        [CLLocationManager authorizationStatus] == kCLAuthorizationStatusRestricted )
    {
        return;
    }

    // if locationManager does not currently exist, create it
    if (!locationManager)
    {
        locationManager = [[CLLocationManager alloc] init];
        [locationManager setDelegate:self];
        locationManager.distanceFilter = 10.0f; // we don't need to be any more accurate than 10m


    }

    [locationManager startUpdatingLocation];

    // [self showCurrentLocationSpinner:YES];
}