iOS小技能：授权检测(引导权限开启，监听权限变化执行回调事件。）

前言

需求：

1. 新增开启相册权限引导：在iPhone的"设置-隐私-照片"中允许访问照片

监听到用户点击不允许: 用户未作出明确选择的情况下自己主动请求了一次权限设置

2. 新增开启相机权限引导：在iPhone的"设置-隐私-相机"中允许访问相机
3. 新增开启定位权限引导：请在iPhone的"设置-隐私-定位"中允许访问地理位置

用户尚未对该应用程序作出选择,安装之后第一次使用定位时，唤起系统授权页面，并监听权限变化执行回调事件。

I 授权检测

1.1 定位权限

查看CLLocationManager的授权状态:​​ [CLLocationManager authorizationStatus​​

//用户尚未对该应用程序作出选择
 kCLAuthorizationStatusRestricted                     //应用程序的定位权限被限制
 kCLAuthorizationStatusAuthorizedAlways               //一直允许获取定位
 kCLAuthorizationStatusAuthorizedWhenInUse            //在使用时允许获取定位
 kCLAuthorizationStatusAuthorized                     //已废弃，相当于一直允许获取定位
 kCLAuthorizationStatusDenied                         //拒绝获取定位

引导权限开启，监听权限变化执行回调事件

/**
showAlert: 是否弹窗引导
block： 回调
*/
+(BOOL)isHasLocationAuthorityWithisShowAlert:(BOOL)showAlert block:(void (^)(id sender))block {


    CLAuthorizationStatus status = [CLLocationManager authorizationStatus];
    //应用程序的定位权限被限制
    //拒绝获取定位
    if (status == kCLAuthorizationStatusRestricted || status == kCLAuthorizationStatusDenied) {
        NSLog(@"NSLog 没有获取地理位置的权限");
        if (showAlert) {
            [LBAlertController showAlertTitle:@"无法使用定位" content:@"请在iPhone的\"设置-隐私-定位\"中允许访问地理位置。" cancelString:@"取消" cancleBlock:nil sureString:@"去设置" sureBlock:^{

                // 需要在info.plist中添加 URL types 并设置一项URL Schemes为prefs  IOS10 以后不起作用
                    if([[UIApplication sharedApplication] canOpenURL:[NSURL URLWithString:UIApplicationOpenSettingsURLString]]){
                    [[UIApplication sharedApplication] openURL:[NSURL URLWithString:UIApplicationOpenSettingsURLString]];
                }
            } currentController:[QCT_Common getCurrentVC]];
        }
        return NO;

    }else if (status == kCLAuthorizationStatusNotDetermined){//用户尚未对该应用程序作出选择,安装之后第一次使用
        CLLocationManager *manager = ERPLBS.shareERPLBS.locationMan;
        ERPLBS.shareERPLBS.block4location = block;// 监听状态变化时，执行的block        
        [manager requestAlwaysAuthorization];
        return NO;

    }


    if(block){// 3. 执行允许之后的定位操作
        block(nil);
    }
    return YES;


}

监听权限变化执行回调事件

- (CLLocationManager *)locationMan{

    if(_locationMan == nil){
        _locationMan = [CLLocationManager new];

        _locationMan.delegate = self;

    }
    return _locationMan;

}
#pragma

- (void)locationManagerDidChangeAuthorization:(CLLocationManager *)manager API_AVAILABLE(ios(14.0), macos(11.0), watchos(7.0), tvos(14.0)){

    CLAuthorizationStatus status = [CLLocationManager authorizationStatus];

    NSLog(@"locationManagerDidChangeAuthorization:%d",status);


    if(status ==kCLAuthorizationStatusAuthorizedAlways|| status == kCLAuthorizationStatusAuthorizedWhenInUse){// 3 ||4

        if(self.block4location){
            self.block4location(nil);

        }

    }



}

- (void)locationManager:(CLLocationManager *)manager didChangeAuthorizationStatus:(CLAuthorizationStatus)status API_DEPRECATED_WITH_REPLACEMENT("-locationManagerDidChangeAuthorization:", ios(4.2, 14.0), macos(10.7, 11.0), watchos(1.0, 7.0), tvos(9.0, 14.0)){


//    nsl
    //kCLAuthorizationStatusAuthorizedAlways
//    kCLAuthorizationStatusAuthorizedWhenInUse

    if(status ==kCLAuthorizationStatusAuthorizedAlways|| status == kCLAuthorizationStatusAuthorizedWhenInUse){//3 ||4

        if(self.block4location){
            self.block4location(nil);

        }

    }

}

1.2 访问图库权限检测以及引导

监听到用户点击不允许: 用户未作出明确选择的情况下自己主动请求了一次权限设置

去设置相机权限的的时候系统会kill 当前app进程 ​​Message from debugger: Terminated due to signal 9​​

/**

 监听到用户点击不允许:
 用户未作出明确选择的情况下自己主动请求了一次权限设置


 showAlert：不允许时显示引导

 block： 允许之后的动作，比如保存图片

 */
+(BOOL)isHasPhotoLibraryAuthorityWithisShowAlert:(BOOL)showAlert  block:(void (^)(id sender))block
{

    PHAuthorizationStatus status = [PHPhotoLibrary authorizationStatus] ;

//1.  定义局部block：  处理没有权限的情况，显示引导
    BOOL (^block4none)(PHAuthorizationStatus ) = ^ BOOL (PHAuthorizationStatus status ){

        NSLog(@" 没有访问图库的权限==============");

        if (showAlert) {

            [LBAlertController showAlertTitle:@"无法使用相册" content:@"请在iPhone的\"设置-隐私-照片\"中允许访问照片。" cancelString:@"取消" cancleBlock:nil sureString:@"去设置" sureBlock:^{
                // 需要在info.plist中添加 URL types 并设置一项URL Schemes为prefs  IOS10 以后不起作用 else的方法

                    if([[UIApplication sharedApplication] canOpenURL:[NSURL URLWithString:UIApplicationOpenSettingsURLString]]){
                    [[UIApplication sharedApplication] openURL:[NSURL URLWithString:UIApplicationOpenSettingsURLString]];
                }
            } currentController:[QCT_Common getCurrentVC]];
        }


        return NO;



    };


    switch (status) {
        case PHAuthorizationStatusRestricted:
        case PHAuthorizationStatusDenied : {

            return block4none(status);


        }
            break;

        case PHAuthorizationStatusNotDetermined:{//2. 用户未作出明确选择的情况下自己主动请求了一次权限设置



            [PHPhotoLibrary requestAuthorization:^(PHAuthorizationStatus phStatus) {

                if (phStatus == PHAuthorizationStatusRestricted || phStatus == PHAuthorizationStatusDenied) {


                    dispatch_sync(dispatch_get_main_queue(), ^{
                        //刷新UI的代码放到主线程执行
                        block4none(status);

                    });



                } else if (phStatus == PHAuthorizationStatusNotDetermined) {

                    // 不处理
                } else {
                    // 执行外围的block
//                    status = QMUIAssetAuthorizationStatusAuthorized;

                    if(block){//执行允许之后的保存图片操作
                        block(nil);
                    }

                }



            }];

            return  NO;

        }

        default:
            break;
    }

    if(block){// 3. 执行允许之后的保存图片操作
        block(nil);
    }
    return  YES;
}

1.3 访问相机的权限检测

/**
 @param showAlert 是否弹窗引导
 @return 是否有权限
 */
+(BOOL)isHasCameraAuthorityWithisShowAlert:(BOOL)showAlert
{
    AVAuthorizationStatus status = [AVCaptureDevice authorizationStatusForMediaType:AVMediaTypeVideo];
    if (status == AVAuthorizationStatusRestricted || status == AVAuthorizationStatusDenied) {
        NSLog(@"LBLog 没有访问相机的权限");
        if (showAlert) {
            [LBAlertController showAlertTitle:@"无法使用相机" content:@"请在iPhone的\"设置-隐私-相机\"中允许访问相机。" cancelString:@"取消" cancleBlock:nil sureString:@"去设置" sureBlock:^{
                // 需要在info.plist中添加 URL types 并设置一项URL Schemes为prefs  IOS10 以后不起作用
                NSURL *url = [NSURL URLWithString:@"prefs:root=Privacy&path=CAMERA"];
                if ([[UIApplication sharedApplication] canOpenURL:url]) {
                    [[UIApplication sharedApplication] openURL:url];
                }else if([[UIApplication sharedApplication] canOpenURL:[NSURL URLWithString:UIApplicationOpenSettingsURLString]]){
                    [[UIApplication sharedApplication] openURL:[NSURL URLWithString:UIApplicationOpenSettingsURLString]];
                }
            } currentController:[DY_Common getCurrentVC]];
            return NO;
        }else if (status == AVAuthorizationStatusNotDetermined){
            [AVCaptureDevice requestAccessForMediaType:AVMediaTypeVideo completionHandler:^(BOOL granted) {
                if (granted) {
                    NSLog(@"LBLog 获取相机权限正常==============");

                }else{
                    NSLog(@"LBLog 获取相机权限不正常==============");
                }
            }];
        }
    }
    NSLog(@"LBLog 有访问相机的权限 =============");
    return YES;
}

1.4 iOS蓝牙状态的处理（蓝牙关闭及未授权的处理）

• ​​iOS蓝牙状态的处理【蓝牙关闭及未授权的处理】​​

1.5 注意事项

To resolve this issue, please revise your app to provide the associated functionality using public APIs or remove the functionality using the "prefs:root" or "App-Prefs:root" URL scheme.

see also

公众号：iOS逆向