iOS 請求權限封裝類的實例代碼

#import <Foundation/Foundation.h>
#import <AVFoundation/AVFoundation.h>
#import <AssetsLibrary/AssetsLibrary.h>
#import <Photos/Photos.h>
#import <CoreLocation/CoreLocation.h>
@interface PermissionUtil : NSObject
+(Boolean)JudgeCameraPermission;
+(Boolean)JudgeLocationPermission;
@end

#import "PermissionUtil.h"
@implementation PermissionUtil

+(BOOL)isCanUsePhotos {
 if ([[[UIDevice currentDevice] systemVersion] floatValue] < 8.0) {
  ALAuthorizationStatus author =[ALAssetsLibrary authorizationStatus];
  if (author == kCLAuthorizationStatusRestricted || author == kCLAuthorizationStatusDenied) {
   //無權限
   return NO;
  }
 }
 else {
  PHAuthorizationStatus status = [PHPhotoLibrary authorizationStatus];
  if (status == PHAuthorizationStatusRestricted ||
   status == PHAuthorizationStatusDenied) {
   //無權限
   return NO;
  }
 }
 return YES;
}

+(Boolean)JudgeCameraPermission{
 AVAuthorizationStatus authStatus = [AVCaptureDevice authorizationStatusForMediaType:AVMediaTypeVideo];
 if (authStatus == AVAuthorizationStatusRestricted || authStatus ==AVAuthorizationStatusDenied||![self isCanUsePhotos])
 {
  return NO;
 }
 return YES;
}

+(Boolean)JudgeLocationPermission{
 if ([CLLocationManager locationServicesEnabled] && ([CLLocationManager authorizationStatus] == kCLAuthorizationStatusAuthorizedWhenInUse || [CLLocationManager authorizationStatus] == kCLAuthorizationStatusNotDetermined || [CLLocationManager authorizationStatus] == kCLAuthorizationStatusAuthorized)) {
  return YES;
 }else if ([CLLocationManager authorizationStatus] ==kCLAuthorizationStatusDenied) {
  return NO;
 }
 return NO;
}
@end