APP開發避免不開系統權限的問題，如何在APP以更加友好的方式向用戶展示系統權限，似乎也是開發過程中值得深思的一件事；

那如何提高APP獲取iOS系統權限的通過率呢？有以下幾種方式:1.在用戶打開APP時就向用戶請求權限；2.告知用戶授權權限后能夠獲得好處之后，再向用戶請求權限；3.在絕對必要的情況下才向用戶請求權限，例如：用戶訪問照片庫時請求訪問系統相冊權限；4.在展示系統權限的對話框前，先向用戶顯示自定義的對話框，若用戶選擇不允許，默認無操作，若用戶選擇允許，再展示系統對話框。

上述情況在開發過程中是經常遇到的，不同方式的選擇會影響最后用戶交互體驗。這一點感悟正是源于上一周工作遇到的問題：適配iOS10，如何獲取應用聯網權限用以管理系統對話框的顯示管理。當我把這個問題解決后，感覺有必要將常用的iOS系統權限做一個總結，以便后用。

權限分類

聯網權限

相冊權限

相機、麥克風權限

定位權限

推送權限

通訊錄權限

日歷、備忘錄權限

聯網權限

引入頭文件 @import CoreTelephony;

應用啟動后，檢測應用中是否有聯網權限

CTCellularData *cellularData = [[CTCellularData alloc]init];

cellularData.cellularDataRestrictionDidUpdateNotifier =? ^(CTCellularDataRestrictedState state){

//獲取聯網狀態

switch (state) {

case kCTCellularDataRestricted:

NSLog(@"Restricrted");

break;

case kCTCellularDataNotRestricted:

NSLog(@"Not Restricted");

break;

case kCTCellularDataRestrictedStateUnknown:

NSLog(@"Unknown");

break;

default:

break;

};

};

查詢應用是否有聯網功能

CTCellularData *cellularData = [[CTCellularData alloc]init];

CTCellularDataRestrictedState state = cellularData.restrictedState;

switch (state) {

case kCTCellularDataRestricted:

NSLog(@"Restricrted");

break;

case kCTCellularDataNotRestricted:

NSLog(@"Not Restricted");

break;

case kCTCellularDataRestrictedStateUnknown:

NSLog(@"Unknown");

break;

default:

break;

}

相冊權限--iOS 9.0之前

導入頭文件@import AssetsLibrary;

檢查是否有相冊權限

PHAuthorizationStatus photoAuthorStatus = [PHPhotoLibrary authorizationStatus];

switch (photoAuthorStatus) {

case PHAuthorizationStatusAuthorized:

NSLog(@"Authorized");

break;

case PHAuthorizationStatusDenied:

NSLog(@"Denied");

break;

case PHAuthorizationStatusNotDetermined:

NSLog(@"not Determined");

break;

case PHAuthorizationStatusRestricted:

NSLog(@"Restricted");

break;

default:

break;

}

![Uploading 144446-b8aca7ba38c5f8c0_695906.png . . .]獲取相冊權限

[PHPhotoLibrary requestAuthorization:^(PHAuthorizationStatus status) {

if (status == PHAuthorizationStatusAuthorized) {

NSLog(@"Authorized");

}else{

NSLog(@"Denied or Restricted");

}

}];

相機和麥克風權限

導入頭文件@import AVFoundation;

檢查是否有相機或麥克風權限

AVAuthorizationStatus AVstatus = [AVCaptureDevice authorizationStatusForMediaType:AVMediaTypeVideo];//相機權限

AVAuthorizationStatus AVstatus = [AVCaptureDevice authorizationStatusForMediaType:AVMediaTypeAudio];//麥克風權限

switch (AVstatus) {

case AVAuthorizationStatusAuthorized:

NSLog(@"Authorized");

break;

case AVAuthorizationStatusDenied:

NSLog(@"Denied");

break;

case AVAuthorizationStatusNotDetermined:

NSLog(@"not Determined");

break;

case AVAuthorizationStatusRestricted:

NSLog(@"Restricted");

break;

default:

break;

}

獲取相機或麥克風權限

[AVCaptureDevice requestAccessForMediaType:AVMediaTypeVideo completionHandler:^(BOOL granted) {//相機權限

if (granted) {

NSLog(@"Authorized");

}else{

NSLog(@"Denied or Restricted");

}

}];

[AVCaptureDevice requestAccessForMediaType:AVMediaTypeAudio completionHandler:^(BOOL granted) {//麥克風權限

if (granted) {

NSLog(@"Authorized");

}else{

NSLog(@"Denied or Restricted");

}

}];

定位權限

導入頭文件@import CoreLocation;

由于iOS8.0之后定位方法的改變，需要在info.plist中進行配置；

檢查是否有定位權限

BOOL isLocation = [CLLocationManager locationServicesEnabled];

if (!isLocation) {

NSLog(@"not turn on the location");}

CLAuthorizationStatus CLstatus = [CLLocationManager authorizationStatus];

switch (CLstatus) {

case kCLAuthorizationStatusAuthorizedAlways:

NSLog(@"Always Authorized");

break;

case kCLAuthorizationStatusAuthorizedWhenInUse:

NSLog(@"AuthorizedWhenInUse");

break;

case kCLAuthorizationStatusDenied:

NSLog(@"Denied");

break;

case kCLAuthorizationStatusNotDetermined:

NSLog(@"not Determined");

break;

case kCLAuthorizationStatusRestricted:

NSLog(@"Restricted");

break;

default:

break;

}

獲取定位權限

CLLocationManager *manager = [[CLLocationManager alloc] init];

[manager requestAlwaysAuthorization];//一直獲取定位信息

[manager requestWhenInUseAuthorization];//使用的時候獲取定位信息

在代理方法中查看權限是否改變

- (void)locationManager:(CLLocationManager *)manager didChangeAuthorizationStatus:(CLAuthorizationStatus)status{ switch (status) {

case kCLAuthorizationStatusAuthorizedAlways:

NSLog(@"Always Authorized");

break;

case kCLAuthorizationStatusAuthorizedWhenInUse:

NSLog(@"AuthorizedWhenInUse");

break;

case kCLAuthorizationStatusDenied:

NSLog(@"Denied");

break;

case kCLAuthorizationStatusNotDetermined:

NSLog(@"not Determined");

break;

case kCLAuthorizationStatusRestricted:

NSLog(@"Restricted");

break;

default:

break;

}

}

推送權限

檢查是否有通訊權限

UIUserNotificationSettings *settings = [[UIApplication sharedApplication] currentUserNotificationSettings];switch (settings.types) {

case UIUserNotificationTypeNone:

NSLog(@"None");

break;

case UIUserNotificationTypeAlert:

NSLog(@"Alert Notification");

break;

case UIUserNotificationTypeBadge:

NSLog(@"Badge Notification");

break;

case UIUserNotificationTypeSound:

NSLog(@"sound Notification'");

break;

default:

break;

}

獲取推送權限

UIUserNotificationSettings *setting = [UIUserNotificationSettings settingsForTypes:UIUserNotificationTypeSound | UIUserNotificationTypeAlert | UIUserNotificationTypeBadge categories:nil];

[[UIApplication sharedApplication] registerUserNotificationSettings:setting];

通訊錄權限

導入頭文件 @import AddressBook;

檢查是否有通訊錄權限

ABAuthorizationStatus ABstatus = ABAddressBookGetAuthorizationStatus();switch (ABstatus) {

case kABAuthorizationStatusAuthorized:

NSLog(@"Authorized");

break;

case kABAuthorizationStatusDenied:

NSLog(@"Denied'");

break;

case kABAuthorizationStatusNotDetermined:

NSLog(@"not Determined");

break;

case kABAuthorizationStatusRestricted:

NSLog(@"Restricted");

break;

default:

break;

}

獲取通訊錄權限

ABAddressBookRef addressBook = ABAddressBookCreateWithOptions(NULL, NULL);

ABAddressBookRequestAccessWithCompletion(addressBook, ^(bool granted, CFErrorRef error) {

if (granted) {

NSLog(@"Authorized");

CFRelease(addressBook);

}else{

NSLog(@"Denied or Restricted");

}

});

日歷、備忘錄權限

導入頭文件

檢查是否有日歷或者備忘錄權限

typedef NS_ENUM(NSUInteger, EKEntityType) {

EKEntityTypeEvent,//日歷

EKEntityTypeReminder //備忘

};

EKAuthorizationStatus EKstatus = [EKEventStore? authorizationStatusForEntityType:EKEntityTypeEvent];switch (EKstatus) {

case EKAuthorizationStatusAuthorized:

NSLog(@"Authorized");

break;

case EKAuthorizationStatusDenied:

NSLog(@"Denied'");

break;

case EKAuthorizationStatusNotDetermined:

NSLog(@"not Determined");

break;

case EKAuthorizationStatusRestricted:

NSLog(@"Restricted");

break;

default:

break;

}

獲取日歷或備忘錄權限

EKEventStore *store = [[EKEventStore alloc]init];

[store requestAccessToEntityType:EKEntityTypeEvent completion:^(BOOL granted, NSError * _Nullable error) {

if (granted) {

NSLog(@"Authorized");

}else{

NSLog(@"Denied or Restricted");

}

}];