react native 开启地理位置授权

效果图：

image.png

在用RN 做获取经纬度的时候，发现地理位置在info中配置了，但是还是没有提示用户授权，
然后就在原生加了主动授权
原生部分代码：
在 AppDelegate.m中 ：
首选 CLLocationManager *locationManager;
实例话要改成全局的，不然的话会出现 授权弹出框一闪而过的现象
info配置项

<key>NSLocationAlwaysUsageDescription</key>
    <string>始终访问地理位置</string>
    <key>NSLocationWhenInUseUsageDescription</key>
    <string>在使用期间访问地理位置</string>
    <key>NSPhotoLibraryUsageDescription</key>

方法：

- (void) getUserLocation {
  int status=[CLLocationManager authorizationStatus];
  if (![CLLocationManager locationServicesEnabled] || status < 3) {
    if ([[UIDevice currentDevice].systemVersion floatValue] >= 8)
    {
      locationManager = [[CLLocationManager alloc] init];
      [locationManager requestAlwaysAuthorization];
      [locationManager requestWhenInUseAuthorization];
    }
  }
}

初始化的时候调用

rootView.backgroundColor = [[UIColor alloc] initWithRed:1.0f green:1.0f blue:1.0f alpha:1];

  self.window = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];
  UIViewController *rootViewController = [UIViewController new];
  rootViewController.view = rootView;
  self.window.rootViewController = rootViewController;
  [self.window makeKeyAndVisible];
  [RNSplashScreen show];  //显示启动屏
  [self getUserLocation];
  return YES;
}

主动触发 相关交互类 .m文件代码

#import "openGps.h"
#import <CoreLocation/CoreLocation.h>
#import <WebKit/WebKit.h>

@implementation openGps
CLLocationManager  *locationManager;
RCT_EXPORT_MODULE(openGps)

RCT_EXPORT_METHOD(openGPS){
  
  BOOL enable=[CLLocationManager locationServicesEnabled];
  NSInteger status=[CLLocationManager authorizationStatus];
  if(!enable || status<3)
  {
    if ([[UIDevice currentDevice].systemVersion floatValue] >= 8)
    {
      locationManager = [[CLLocationManager alloc] init];
      [locationManager requestAlwaysAuthorization];
      [locationManager requestWhenInUseAuthorization];
    }
    UIAlertController *alertView=[UIAlertController alertControllerWithTitle:@"APP想要访问您的地理位置以方便订单审核" message:@"定位服务未开启，请进入系统［设置］> [隐私] > [定位服务]中打开开关，并允许使用定位服务" preferredStyle:UIAlertControllerStyleAlert];
    UIAlertAction *sureAction=[UIAlertAction actionWithTitle:@"立即开启" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
      [[UIApplication sharedApplication] openURL:[NSURL URLWithString:UIApplicationOpenSettingsURLString]];
    }];
    UIAlertAction *cancelAction=[UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) {

    }];
    [alertView addAction:sureAction];
    [alertView addAction:cancelAction];

    UIWindow *keyWindow = [[UIApplication sharedApplication] keyWindow];
    UIViewController *mainViewController = keyWindow.rootViewController;

    [mainViewController presentViewController:alertView animated:YES completion:nil];
  }
  

}
@end

rn 端调用：

   NativeModules.openGps.openGPS()