在需要使用地理位置的時(shí)候就需要打開(kāi)使用地理位置的權(quán)限.很多時(shí)候用戶在第一時(shí)間就直接關(guān)閉了使用地理位置的權(quán)限,那么用戶使用到了地理位置的時(shí)候就需要提醒用戶去開(kāi)啟權(quán)限:

6CO5L.gif

具體實(shí)現(xiàn)代碼如下:

 BOOL enable=[CLLocationManager locationServicesEnabled];
    NSInteger status=[CLLocationManager authorizationStatus];
    if(!enable || status<3)
    {
        if ([[UIDevice currentDevice].systemVersion floatValue] >= 8)
        {
            CLLocationManager  *locationManager = [[CLLocationManager alloc] init];
            [locationManager requestAlwaysAuthorization];
            [locationManager requestWhenInUseAuthorization];
        }
        UIAlertController *alertView=[UIAlertController alertControllerWithTitle:@"打開(kāi)定位開(kāi)關(guān)提供更優(yōu)質(zhì)的服務(wù)" message:@"定位服務(wù)未開(kāi)啟，請(qǐng)進(jìn)入系統(tǒng)［設(shè)置］> [隱私] > [定位服務(wù)]中打開(kāi)開(kāi)關(guān)，并允許使用定位服務(wù)" preferredStyle:UIAlertControllerStyleAlert];
        UIAlertAction *sureAction=[UIAlertAction actionWithTitle:@"立即開(kāi)啟" 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];
        
        [self presentViewController:alertView animated:YES completion:nil];  
    }
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