iOS 8.1 CoreLocationManager requestWhenInUseAuthorization 不提示 AlertView

Question

我正在尝试在我的 iOS 应用程序上使用用户位置。该应用程序适用于 iOS 7，但不适用于 iOS 8。

我都试过了。看了一堆教程，我知道在 iOS 8 中我们需要调用 requestWhenInUseAuthorization 方法并将 NSLocationWhenInUseUsageDescription 键添加到 Info.plist 中。

但它仍然无法正常工作，它没有征求用户的许可，我正在真实设备(运行 iOS 8.1.x 的 iPhone 5c)中进行测试。我多次尝试重新安装该应用程序。

这些是我为测试这个东西而创建的一个非常非常小的项目的代码。

我的ViewController.m

#import "ViewController.h"

#import <CoreLocation/CoreLocation.h>

@interface ViewController () <CLLocationManagerDelegate>

@property (strong, nonatomic) CLLocationManager *locationManager;

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];

    self.locationManager = [[CLLocationManager alloc] init];
    self.locationManager.delegate = self;

    self.locationManager.desiredAccuracy = kCLLocationAccuracyBest;
    self.locationManager.distanceFilter = kCLHeadingFilterNone;

    if ([self.locationManager respondsToSelector:@selector(requestWhenInUseAuthorization)]) {
        NSLog(@"Pôde chamar o método"); // It could call the method
        [self.locationManager requestWhenInUseAuthorization];
    }

//    [self.locationManager startUpdatingLocation];

}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

#pragma mark - CLLocationManagerDelegate

- (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations {
    NSLog(@"Atualizou Localização para: %@", [locations lastObject]); // Updated the location to
}

- (void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error {
    NSLog(@"Location Manager falhou com erro: %@", error); // Location manager failed with error
}

- (void)locationManager:(CLLocationManager *)manager didChangeAuthorizationStatus:(CLAuthorizationStatus)status {
    if (status == kCLAuthorizationStatusAuthorized) {
        [self.locationManager startUpdatingLocation];
    }
}

@end

我的信息.plist

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>CFBundleDevelopmentRegion</key>
    <string>en</string>
    <key>CFBundleExecutable</key>
    <string>$(EXECUTABLE_NAME)</string>
    <key>CFBundleIdentifier</key>
    <string>wallace.$(PRODUCT_NAME:rfc1034identifier)</string>
    <key>CFBundleInfoDictionaryVersion</key>
    <string>6.0</string>
    <key>CFBundleName</key>
    <string>$(PRODUCT_NAME)</string>
    <key>CFBundlePackageType</key>
    <string>BNDL</string>
    <key>CFBundleShortVersionString</key>
    <string>1.0</string>
    <key>CFBundleSignature</key>
    <string>????</string>
    <key>CFBundleVersion</key>
    <string>1</string>

    <key>NSLocationWhenInUseUsageDescription</key>
    <string></string>


</dict>
</plist>

有人知道如何解决这个问题吗？

Answer 1

将 NSLocationAlwaysUsageDescription 和 NSLocationWhenInUseUsageDescription 添加到您的 Info.plist。然后您可以为每个值提供 AlertView 文本。

位置管理器将查看这些字段中的文本以在 AlertView 中进行提示。