OC相机封装

AlbumService询问相机权限

AuthorizationService相机封装

plist文件设置：

<key>NSCameraUsageDescription</key>
<string>App需要您的同意,才能访问相机</string>
<key>NSPhotoLibraryUsageDescription</key>
<string>App需要您的同意,才能访问相册</string>

代码：AlbumService.h

 

#import "AuthorizationService.h"
#import<AssetsLibrary/AssetsLibrary.h>
#import<CoreLocation/CoreLocation.h>
#import<AVFoundation/AVCaptureDevice.h>
#import <AVFoundation/AVMediaFormat.h>
@implementation AuthorizationService
/**
 判断是否有相机权限
 */
+ (BOOL)isHaveCameraAuthor{
    AVAuthorizationStatus authStatus = [AVCaptureDevice authorizationStatusForMediaType:AVMediaTypeVideo];
    
    if (authStatus ==AVAuthorizationStatusRestricted ||//此应用程序没有被授权访问的照片数据。可能是家长控制权限
        authStatus ==AVAuthorizationStatusDenied)  //用户已经明确否认了这一照片数据的应用程序访问
        
    {
        // 无权限 引导去开启
        NSURL *url = [NSURL URLWithString:UIApplicationOpenSettingsURLString];
        
        if ([[UIApplication sharedApplication]canOpenURL:url]) {
            
            [[UIApplication sharedApplication]openURL:url];
            
        }
        return NO;
    }
    return YES;
}
/**
 判断是否有相册访问权限
 */
+ (BOOL)isHavePhotoAuthor{
    ALAuthorizationStatus author = [ALAssetsLibrary authorizationStatus];
    
    if (author ==kCLAuthorizationStatusRestricted || author ==kCLAuthorizationStatusDenied){
        //无权限 引导去开启
        NSURL *url = [NSURL URLWithString:UIApplicationOpenSettingsURLString];
        
        if ([[UIApplication sharedApplication] canOpenURL:url]) {
            [[UIApplication sharedApplication] openURL:url];
        }
        
        return NO;
        
    }
    return YES;
}
@end

AlbumService.h

#import <Foundation/Foundation.h>

@interface AlbumService : NSObject
@property (nonatomic,assign) UIImagePickerControllerSourceType sType;
@property (nonatomic,strong) UIImage *selectedImage;
@property (nonatomic,assign) id imageStateKey;
@property (nonatomic,strong) void (^doneSelectBlock)(UIImage *image);
+(AlbumService *)sharedContactsService;
-(void)showAlbumInViewController:(UIViewController *)curVc;;
-(void)hideAlbum;
@end

 AlbumService.m

#import "AlbumService.h"


@interface AlbumService ()<UINavigationControllerDelegate,UIImagePickerControllerDelegate>
{
    UIImagePickerController *imagePicker;
}

@end

@implementation AlbumService
static AlbumService *contacts;
+(AlbumService *)sharedContactsService{
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        contacts = [AlbumService new];
    });
    return contacts;
}


#pragma mark - setter
-(void)setSType:(UIImagePickerControllerSourceType)sType
{
    _sType = sType;
    if (![UIImagePickerController isSourceTypeAvailable: UIImagePickerControllerSourceTypeCamera]) {
        _sType = UIImagePickerControllerSourceTypePhotoLibrary;
    }
}

#pragma mark - public
-(void)showAlbumInViewController:(UIViewController *)curVc
{
    UIImagePickerControllerSourceType sourceType = self.sType?:UIImagePickerControllerSourceTypePhotoLibrary;
    if (!imagePicker) {
        imagePicker = [[UIImagePickerController alloc]init];
        imagePicker.delegate = self;
        imagePicker.allowsEditing = YES;
    }
    imagePicker.sourceType = sourceType;
    
    [curVc presentViewController:imagePicker animated:YES completion:nil];
   
}

-(void)hideAlbum
{
    [imagePicker dismissViewControllerAnimated:YES completion:nil];
}

#pragma mark - UIImagePickerViewDelegate
-(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
    NSString *stateKey = self.imageStateKey?:UIImagePickerControllerEditedImage;
    UIImage *resultImage = [info valueForKey:stateKey];
    
    __weak typeof(self) weakSelf = self;
    if (weakSelf.doneSelectBlock) {
        weakSelf.doneSelectBlock(resultImage);
    }
    
    [picker dismissViewControllerAnimated:YES completion:nil];
}

-(void)imagePickerControllerDidCancel:(UIImagePickerController *)picker
{
    [picker dismissViewControllerAnimated:YES completion:nil];
}
@end

使用

 AlbumService *service = [AlbumService sharedContactsService];
        
/*打开相册*/
  if([AuthorizationService isHavePhotoAuthor]){//是否有相册权限
          service.sType = UIImagePickerControllerSourceTypePhotoLibrary;
     }else{
    return;
 }
            
        
/*打开相机*/
  if([AuthorizationService isHaveCameraAuthor]){{//是否有相机权限
         service.sType = UIImagePickerControllerSourceTypeCamera;
    }else{
          return;
   }
            
    __block typeof(self)weakSelf = self;
     service.doneSelectBlock = ^(UIImage *img){
            //回调的UIImage
            _choseImg = img;

     };
        [service showAlbumInViewController:self];