iOS 8 gps未启用 [英] iOS 8 gps not enabled

问题描述

我解决了一个问题，即GPS服务在iOS 7上完美工作，但在iOS 8上我从未获得权限请求和方法：

   - （void）locationManager：（CLLocationManager *）manager didUpdateLocations：（NSArray *）locations 
  

<

我的代码在这里：

  #importLocator.h
 
 @implementation Locator 
 $ b  - （instancetype）init {
 if（self = [super init]）{
 //启动位置管理器
 self.locationManager = [[CLLocationManager alloc] init]; 
 self.locationManager.delegate = self; 
 self.locationManager.desiredAccuracy = kCLLocationAccuracyBest; 
 self.locationManager.distanceFilter = 3; 
 // iOS 6的新属性
 if（[self.locationManager respondsToSelector：@selector（activityType）]）{
 self.locationManager.activityType = CLActivityTypeFitness; 
} 
 //为iOS8添加新方法
 if（[self.locationManager respondsToSelector：@selector（requestAlwaysAuthorization）]）{
 [self.locationManager requestAlwaysAuthorization]; 
} 
} 
返回自我; （CLLocationManager locationServicesEnabled]&< [CLLocationManager significantLocationChangeMonitoringAvailable]）{
 //（void）startMonitoring：（LocationChangeCallback）callback {
 if注册观察员，了解此应用进入后台的时间和时间返回到前台
 //注意：此代码仅适用于iOS4.0 +。 
 [[NSNotificationCenter defaultCenter] addObserver：self selector：@selector（switchToLowEnergyMode）name：UIApplicationDidEnterBackgroundNotification object：nil]; 
 [[NSNotificationCenter defaultCenter] addObserver：self selector：@selector（switchToAccurateMode）name：UIApplicationDidFinishLaunchingNotification object：nil]; 
 [[NSNotificationCenter defaultCenter] addObserver：self selector：@selector（switchToAccurateMode）name：UIApplicationWillEnterForegroundNotification object：nil]; 
 
 UIApplicationState state = [[UIApplication sharedApplication] applicationState]; 
 
 self.locationUpdateCallback = callback; 
 
 if（state == UIApplicationStateActive）{
 [self switchToAccurateMode]; 
} else {
 [self switchToLowEnergyMode]; 
 
 
 
 $ b  - （void）switchToAccurateMode {
 NSLog（@Accurate）; 
 [self.locationManager stopMonitoringSignificantLocationChanges]; 
 
 //找到当前位置
 [self.locationManager startUpdatingLocation]; 
} 
 
  - （void）switchToLowEnergyMode {
 NSLog（@Low Energy）; 
 [self.locationManager stopUpdatingLocation]; 
 
 //查找当前位置
 [self.locationManager startMonitoringSignificantLocationChanges]; 
 
 
 $ b #pragma mark  -  CLLocationDelegate方法
 $ b  - （void）locationManager：（CLLocationManager *）manager didUpdateLocations：（NSArray *）locations { 
 // locations包含一组最近的位置，但是这个app只关心最近的
 //这也是manager.location
 if（self.locationUpdateCallback！= nil） {
 self.locationUpdateCallback（manager.location）; 
 
 
 $ b  - （void）locationManager：（CLLocationManager *）manager didFailWithError：（NSError *）error {
 NSLog（@Location manager failed and error ：％@，错误）; 
 if（[error.domain isEqualToString：kCLErrorDomain]&& error.code == kCLErrorDenied）{
 //用户拒绝位置服务，所以停止更新管理器
 [manager stopUpdatingLocation]; 
} 
} 
 @end 
  

设置，我的应用程序名称背后没有任何东西。其他应用程序有（Always，Never或While Using）。

NSLocationAlwaysUsageDescription 或 NSLocationWhenInUseUsageDescription 键给你的plist。

添加CLLocationManagerDelegate

  @实现Locator< CLLocationManagerDelegate> 
 
  - （instancetype）init {
 // ...... 
 self.locationManager.requestAlwaysAuthorization（）; 
} 
  

I tackled an issue, that GPS services work perfectly on iOS 7, but on iOS 8 I never get the permission request and the method:

- (void) locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations

never gets called.

My code is here:

#import "Locator.h"

@implementation Locator

- (instancetype) init {
    if (self = [super init]) {
        // Start up the location manager
        self.locationManager = [[CLLocationManager alloc] init];
        self.locationManager.delegate = self;
        self.locationManager.desiredAccuracy = kCLLocationAccuracyBest;
        self.locationManager.distanceFilter = 3;
        // New property for iOS6
        if ([self.locationManager respondsToSelector:@selector(activityType)]) {
            self.locationManager.activityType = CLActivityTypeFitness;
        }
        // New method for iOS8
        if ([self.locationManager respondsToSelector:@selector(requestAlwaysAuthorization)]) {
            [self.locationManager requestAlwaysAuthorization];
        }
    }
    return self;
}

- (void) startMonitoring:(LocationChangeCallback)callback {
    if ([CLLocationManager locationServicesEnabled] && [CLLocationManager significantLocationChangeMonitoringAvailable]) {
        // Register an observer for if/when this app goes into background & comes back to foreground
        // NOTE: THIS CODE IS iOS4.0+ ONLY.
        [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(switchToLowEnergyMode) name:UIApplicationDidEnterBackgroundNotification object:nil];
        [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(switchToAccurateMode) name:UIApplicationDidFinishLaunchingNotification object:nil];
        [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(switchToAccurateMode) name:UIApplicationWillEnterForegroundNotification object:nil];

        UIApplicationState state = [[UIApplication sharedApplication] applicationState];

        self.locationUpdateCallback = callback;

        if (state == UIApplicationStateActive) {
            [self switchToAccurateMode];
        } else {
            [self switchToLowEnergyMode];
        }
    }
}

- (void) switchToAccurateMode {
    NSLog(@"Accurate");
    [self.locationManager stopMonitoringSignificantLocationChanges];

    // Find the current location
    [self.locationManager startUpdatingLocation];
}

- (void) switchToLowEnergyMode {
    NSLog(@"Low Energy");
    [self.locationManager stopUpdatingLocation];

    // Find the current location
    [self.locationManager startMonitoringSignificantLocationChanges];
}


#pragma mark - CLLocationDelegate Methods

- (void) locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations {
    // locations contains an array of recent locations, but this app only cares about the most recent
    // which is also "manager.location"
    if (self.locationUpdateCallback != nil) {
        self.locationUpdateCallback(manager.location);
    }
}

- (void) locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error {
    NSLog(@"Location manager failed with error: %@", error);
    if ([error.domain isEqualToString:kCLErrorDomain] && error.code == kCLErrorDenied) {
        //user denied location services so stop updating manager
        [manager stopUpdatingLocation];
    }
}
@end

I also checked under location settings and there was nothing behind my application name. Other applications have ("Always", "Never" or "While Using").

解决方案

For IOS 8 you have to add NSLocationAlwaysUsageDescription or NSLocationWhenInUseUsageDescription key to your plist. Otherwise it does not ask for permission.

add CLLocationManagerDelegate

@implementation Locator <CLLocationManagerDelegate>

- (instancetype) init {
    //......
    self.locationManager.requestAlwaysAuthorization();
}

这篇关于iOS 8 gps未启用的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！