iOS 系統設置隱私中經常使用的功能權限獲取
#####1.相冊權限git
ALAuthorizationStatus authStatus = [ALAssetsLibrary authorizationStatus];
根據apple的sdk ALAuthorizationStatus 擁有如下狀態github
typedef NS_ENUM(NSInteger, ALAuthorizationStatus) {
ALAuthorizationStatusNotDetermined NS_ENUM_DEPRECATED_IOS(6_0, 9_0) = 0, // 用戶尚未選擇權限
ALAuthorizationStatusRestricted NS_ENUM_DEPRECATED_IOS(6_0, 9_0), // 應用未被受權 用戶不能更改該應用程序的狀態,可能因爲活躍的限制/ /如家長控制到位。
ALAuthorizationStatusDenied NS_ENUM_DEPRECATED_IOS(6_0, 9_0), //用戶拒絕應用訪問
ALAuthorizationStatusAuthorized NS_ENUM_DEPRECATED_IOS(6_0, 9_0) // 用戶容許應用訪問
}
ALAuthorizationStatus authStatus = [ALAssetsLibrary authorizationStatus];
if (authStatus == ALAuthorizationStatusDenied || authStatus == ALAuthorizationStatusRestricted) {
if (IS_IOS8_OR_HIGHER && [[UIApplication sharedApplication] canOpenURL:[NSURL URLWithString:UIApplicationOpenSettingsURLString]]) {
failedHandle(true);
return;
}
else {
failedHandle(false);
return;
}
}
succeedHandler();
iOS8 之後能夠經過app
PHAuthorizationStatus status = [PHPhotoLibrary authorizationStatus];
PHAuthorizationStatus的權限值同上類似，這邊就不寫了，可查看具體的apple 的sdkasync
#####2.相機權限ide
AVAuthorizationStatus authStatus = [AVCaptureDevice authorizationStatusForMediaType:AVMediaTypeVideo];
對應的權限枚舉，解析如相冊權限。spa
typedef NS_ENUM(NSInteger, AVAuthorizationStatus) {
AVAuthorizationStatusNotDetermined = 0,
AVAuthorizationStatusRestricted,
AVAuthorizationStatusDenied,
AVAuthorizationStatusAuthorized
}
if (authStatus == AVAuthorizationStatusDenied || authStatus == AVAuthorizationStatusRestricted) {
if (IS_IOS8_OR_HIGHER && [[UIApplication sharedApplication] canOpenURL:[NSURL URLWithString:UIApplicationOpenSettingsURLString]]) {
failedHandle (true);
}
else {
failedHandle (false);
}
}
else if(authStatus == AVAuthorizationStatusAuthorized)
{
succeedHandler();
}
else if (authStatus == ALAuthorizationStatusNotDetermined){
[AVCaptureDevice requestAccessForMediaType:AVMediaTypeVideo completionHandler:^(BOOL granted) {
dispatch_async(dispatch_get_main_queue(), ^{
if(granted){
succeedHandler();
}
else {
if (IS_IOS8_OR_HIGHER && [[UIApplication sharedApplication] canOpenURL:[NSURL URLWithString:UIApplicationOpenSettingsURLString]]) {
failedHandle (true);
}
else {
failedHandle (false);
}
}
});
}];
}
#####3.麥克風權限 AVAudioSession 這是個很重要的類 有關音頻視頻等都會用到它，並且也不是很容易理清楚的，這邊就不詳說這個類的用處了。code
[[AVAudioSession sharedInstance] requestRecordPermission:^(BOOL granted) {
dispatch_async(dispatch_get_main_queue(), ^{
if (granted) {
succeedHandler();
}
else {
if (IS_IOS8_OR_HIGHER && [[UIApplication sharedApplication] canOpenURL:[NSURL URLWithString:UIApplicationOpenSettingsURLString]]) {
failedHandle(true);
}
else {
failedHandle(false);
}
}
});
}];
- (AVAudioSessionRecordPermission)recordPermission NS_AVAILABLE_IOS(8_0) 這是iOS8 之後開始支持的方法，使用也很是方便簡單。 下面說下這個屬性的含義：獲取當前應用錄音權限
typedef NS_OPTIONS(NSUInteger, AVAudioSessionRecordPermission)
{
AVAudioSessionRecordPermissionUndetermined = 'undt’,// 未獲取權限
AVAudioSessionRecordPermissionDenied = 'deny’,//拒絕受權
AVAudioSessionRecordPermissionGranted = ‘grant’//贊成受權
}
#####4.定位權限 iOS8之後定位的獲取方法有些變更，但也是簡單的 [CLLocationManager locationServicesEnabled] 是否啓用定位服務 [CLLocationManager authorizationStatus] 獲取當前定位的權限值視頻
typedef NS_ENUM(int, CLAuthorizationStatus) {
// 用戶還沒有選擇關於這個應用程序
kCLAuthorizationStatusNotDetermined = 0,
//這個應用程序未被受權使用定位服務
kCLAuthorizationStatusRestricted,
// 用戶已經明確拒絕受權對於這個應用程序，或在設置裏拒絕該應用使用
kCLAuthorizationStatusDenied,
//用戶已得到受權使用他們的位置在任什麼時候候
kCLAuthorizationStatusAuthorizedAlways NS_ENUM_AVAILABLE(NA, 8_0),
//在使用應用程序的時候受權使用 在前臺
kCLAuthorizationStatusAuthorizedWhenInUse NS_ENUM_AVAILABLE(NA, 8_0),
// 這個值是棄用,但至關於 kCLAuthorizationStatusAuthorizedAlways。
kCLAuthorizationStatusAuthorized NS_ENUM_DEPRECATED(10_6, NA, 2_0, 8_0)
};
if (IS_IOS8_OR_HIGHER) {
if ([CLLocationManager locationServicesEnabled] && [CLLocationManager authorizationStatus] != kCLAuthorizationStatusDenied && [CLLocationManager authorizationStatus] != kCLAuthorizationStatusRestricted) {
succeedHandler();
}
else
{
if ([[UIApplication sharedApplication] canOpenURL:[NSURL URLWithString:UIApplicationOpenSettingsURLString]]) {
failedHandle(true);
}
else {
failedHandle(false);
}
}
}
else
{
if ([CLLocationManager locationServicesEnabled]&& ([CLLocationManager authorizationStatus] == kCLAuthorizationStatusAuthorized || [CLLocationManager authorizationStatus] == kCLAuthorizationStatusNotDetermined)) {
succeedHandler();
}
else
{
failedHandle(false);
}
}
#####5.通信錄權限 通信錄的權限獲取 iOS8又是個分界點，這裏就直接上獲取權限的代碼了。開發
if (IS_IOS8_OR_HIGHER)
{
if (&ABAddressBookRequestAccessWithCompletion != NULL)
{
ABAddressBookRequestAccessWithCompletion(self.addressBook, ^(bool granted, CFErrorRef error)
{
if (granted) {
succeedHandler();
}
else
{
if ([[UIApplication sharedApplication] canOpenURL:[NSURL URLWithString:UIApplicationOpenSettingsURLString]])
{
failedHandle(true);
}
else {
failedHandle(false);
}
}
});
}
}
else
{
if (&ABAddressBookRequestAccessWithCompletion != NULL)
{
ABAddressBookRequestAccessWithCompletion(self.addressBook, ^(bool granted, CFErrorRef error)
{
if (granted) {
succeedHandler();
}
else
{
failedHandle(false);
}
});
}
}
5.通知權限 [[UIApplication sharedApplication] isRegisteredForRemoteNotifications]// 系統設置總開關 [[UIApplication sharedApplication] currentUserNotificationSettings].types//通知下的各個權限子開關get
typedef NS_OPTIONS(NSUInteger, UIUserNotificationType) {
UIUserNotificationTypeNone = 0, // the application may not present any UI upon a notification being received
UIUserNotificationTypeBadge = 1 << 0, // the application may badge its icon upon a notification being received
UIUserNotificationTypeSound = 1 << 1, // the application may play a sound upon a notification being received
UIUserNotificationTypeAlert = 1 << 2, // the application may display an alert upon a notification being received
}
BOOL pushEnabled;
// 設置裏的通知總開關是否打開
BOOL settingEnabled = [[UIApplication sharedApplication] isRegisteredForRemoteNotifications];
// 設置裏的通知各子項是否都打開
BOOL subsettingEnabled = [[UIApplication sharedApplication] currentUserNotificationSettings].types != UIUserNotificationTypeNone;
pushEnabled = settingEnabled && subsettingEnabled;
if (pushEnabled) {
succeedHandler();
}
else
{
if ([[UIApplication sharedApplication] canOpenURL:[NSURL URLWithString:UIApplicationOpenSettingsURLString]])
{
failedHandle(true);
}
else {
failedHandle(false);
}
}
總結：經過各個功能權限的獲取，發現apple對用戶隱私愈來愈重視。方法也更完善，iOS8 是一個重要的臨界點，開發能夠考慮從iOS8開始支持，如
[[UIApplication sharedApplication] canOpenURL:[NSURL URLWithString:UIApplicationOpenSettingsURLString]];
這句話的做用是判斷可否打開設置裏該應用的隱私設置，應用直接跳轉到設置裏 會使用戶的體驗更好。 [在github上有我對這些的封裝使用] https://github.com/weskhen/PaoBa/tree/master/SystemPermission
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