IOS应用程序检测GPS是否打开，是否授权

- (void)checkGPS

{

    if ([CLLocationManager locationServicesEnabled]) {

        if ([CLLocationManager authorizationStatus] != kCLAuthorizationStatusAuthorizedAlways) {

            [self showAlertView:nil message:@"检测到当前定位服务已关闭，建议您开启定位服务" leftMenuTitle:@"取消" rightMenuTitle:@"去开启" alertResultBlock:^(AlertMenuIndex menuIndex) {

                if (menuIndex == RightMenuIndex) {

                    NSURL *url = [NSURL URLWithString:UIApplicationOpenSettingsURLString];

                    if ([[UIApplication sharedApplication] canOpenURL:url] ) {

                        [[UIApplication sharedApplication] openURL:url];

                    }

                }

            }];

        }

    }

    else {

        [self showAlertView:nil message:@"检测到当前定位服务已关闭，建议您开启定位服务" leftMenuTitle:@"取消" rightMenuTitle:@"去开启" alertResultBlock:^(AlertMenuIndex menuIndex) {

            NSURL*url=[NSURL URLWithString:@"Prefs:root=Privacy&path=LOCATION"];

            // ！！！关键代码！！！跟之前的写法也不一样了！！！

            Class LSApplicationWorkspace = NSClassFromString(@"LSApplicationWorkspace");

            [[LSApplicationWorkspace performSelector:@selector(defaultWorkspace)] performSelector:@selector(openSensitiveURL:withOptions:) withObject:url withObject:nil];

        }];

    }

}