使用iOS10重新安裝后，定位服務停止工作

Question

卸載iOS10應用后，定位服務停止工作。 我已經在Info.plist中設置了說明，因此使我困惑為什么定位服務將停止工作。 該應用程序未顯示在“設置”->“隱私”->“位置服務”中

<key>NSLocationAlwaysUsageDescription</key>
<string>This app needs to use your location so that it may send it to your selected contacts.</string>
<key>NSLocationWhenInUseUsageDescription</key>
<string>This app needs to use your location so that it may send it to your selected contacts.</string>

使用以下代碼檢查狀態將顯示狀態未確定。

if ([CLLocationManager locationServicesEnabled]) {
    if ([CLLocationManager authorizationStatus] == kCLAuthorizationStatusRestricted) {
        NSLog(@"RESTRICTED");
    } else if ([CLLocationManager authorizationStatus] == kCLAuthorizationStatusDenied) {
        NSLog(@"DENIED");
    } else if ([CLLocationManager authorizationStatus] == kCLAuthorizationStatusNotDetermined) {
        NSLog(@"NOT DETERMINED");
    } else if ([CLLocationManager authorizationStatus] == kCLAuthorizationStatusAuthorizedAlways) {
        NSLog(@"ALWAYS");
    } else if ([CLLocationManager authorizationStatus] == kCLAuthorizationStatusAuthorizedWhenInUse) {
        NSLog(@"WHEN IN USE");
    }
}

編輯： viewController viewDidLoad方法包含以下代碼：

- (void)viewDidLoad {
    [self.locationManager requestAlwaysAuthorization];
    [self.locationManager requestWhenInUseAuthorization];
    self.locationManager = [[CLLocationManager alloc] init];
    self.locationManager.desiredAccuracy = kCLLocationAccuracyBest;
    self.locationManager.delegate = self;

    if ([CLLocationManager locationServicesEnabled]) {
        if ([CLLocationManager authorizationStatus] == kCLAuthorizationStatusRestricted) {
            NSLog(@"RESTRICTED");
        } else if ([CLLocationManager authorizationStatus] == kCLAuthorizationStatusDenied) {
            NSLog(@"DENIED");
        } else if ([CLLocationManager authorizationStatus] == kCLAuthorizationStatusNotDetermined) {
            NSLog(@"NOT DETERMINED");
        } else if ([CLLocationManager authorizationStatus] == kCLAuthorizationStatusAuthorizedAlways) {
            NSLog(@"ALWAYS");
        } else if ([CLLocationManager authorizationStatus] == kCLAuthorizationStatusAuthorizedWhenInUse) {
            NSLog(@"WHEN IN USE");
        }
    }
}

Answer 1

您需要使用[yourLocationManager startUpdatingLocation] ，這將提示使用位置的警報。

在此之前， authorizationStatus將為kCLAuthorizationStatusNotDetermined

編輯

self.locationManager = [[CLLocationManager alloc] init]; 
self.locationManager.desiredAccuracy = kCLLocationAccuracyBest; 
[self.locationManager requestAlwaysAuthorization]; 
self.locationManager.delegate = self;

加上這個

Answer 2

您需要檢查授權狀態，如果它是xxx，則需要調用requestAlwaysAuthorization()或requestWhenInUseAuthorization() 。 這將向用戶觸發警報。

如果您通過長按應用程序圖標並點按X來刪除該應用程序，則會撤消用戶使用位置服務的權限，因此該應用程序將被拒絕訪問，直到您再次調用requestAlwaysAuthorization()或requestWhenInUseAuthorization() 。