PhotoPickManager

照片拍照功能

#import <Foundation/Foundation.h>
#import <UIKit/UIKit.h>

NS_ASSUME_NONNULL_BEGIN

typedef NS_ENUM(NSInteger, PickerType)
{
    PickerType_Camera = 0, // 拍照
    PickerType_Photo, // 照片
};

typedef void(^CallBackBlock)(NSDictionary *infoDict, BOOL isCancel);  // 回调

@interface PhotoPickManager : NSObject

+ (instancetype)shareInstance; // 单例

- (void)presentPicker:(PickerType)pickerType target:(UIViewController *)vc callBackBlock:(CallBackBlock)callBackBlock;

@end

NS_ASSUME_NONNULL_END

#import "PhotoPickManager.h"

@interface PhotoPickManager ()<UINavigationControllerDelegate,UIImagePickerControllerDelegate>

@property (nonatomic,strong) UIImagePickerController * imgPickC;

@property (nonatomic,strong) UIViewController * vc;

@property (nonatomic,copy) CallBackBlock  callBackBlock;

@end

@implementation PhotoPickManager

+ (instancetype)shareInstance
{
    static dispatch_once_t once;
    static PhotoPickManager *pickManager = nil;
    dispatch_once(&once, ^{
        pickManager = [[PhotoPickManager alloc] init];
    });
    return pickManager;
}

- (instancetype)init
{
    if([super init]){
        if(!self.imgPickC){
            self.imgPickC = [[UIImagePickerController alloc] init];
        }
    }
    return self;
}

- (void)presentPicker:(PickerType)pickerType target:(UIViewController *)vc callBackBlock:(CallBackBlock)callBackBlock
{
    self.vc = vc;
    self.callBackBlock = callBackBlock;
    if(pickerType == PickerType_Camera)
    {
        // 拍照
        if([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]){
            self.imgPickC.delegate = self;
            self.imgPickC.sourceType = UIImagePickerControllerSourceTypeCamera;
            self.imgPickC.allowsEditing = YES;
            self.imgPickC.showsCameraControls = YES;
            UIView *view = [[UIView  alloc] init];
            view.backgroundColor = [UIColor grayColor];
            self.imgPickC.cameraOverlayView = view;
            [self.vc presentViewController:self.imgPickC animated:YES completion:nil];
        }else{
            UIAlertController *alertVc = [UIAlertController alertControllerWithTitle:@"" message:@"相机不可用" preferredStyle:UIAlertControllerStyleAlert];
            UIAlertAction *cancelBtn = [UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) {        NSLog(@"取消");
            }];
            [alertVc addAction:cancelBtn];
            [self.vc presentViewController:alertVc animated:YES completion:nil];
        }
    }
    
    else if(pickerType == PickerType_Photo)
    {
        // 相册
        if([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeSavedPhotosAlbum]){
            self.imgPickC.delegate = self;
            self.imgPickC.sourceType = UIImagePickerControllerSourceTypeSavedPhotosAlbum;
            self.imgPickC.allowsEditing = YES;
            [self.vc presentViewController:self.imgPickC animated:YES completion:nil];
        }else{
            UIAlertController *alertVc = [UIAlertController alertControllerWithTitle:@"" message:@"相册不可用" preferredStyle:UIAlertControllerStyleAlert];
            UIAlertAction *cancelBtn = [UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) {        NSLog(@"取消");
            }];
            [alertVc addAction:cancelBtn];
            [self.vc presentViewController:alertVc animated:YES completion:nil];
        }
    }
}


#pragma mark ---- UIImagePickerControllerDelegate

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary<NSString *,id> *)info
{
    [self.vc dismissViewControllerAnimated:YES completion:^{
        self.callBackBlock(info, NO);
    }];
}

- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker
{
    [self.vc dismissViewControllerAnimated:YES completion:^{
        self.callBackBlock(nil, YES);
    }];
}

@end

调用方法

 __weak __typeof(self)weakSelf = self;
PhotoPickManager *pickManager = [PhotoPickManager shareInstance];
[pickManager presentPicker:PickerType_Photo
                    target:weakSelf
             callBackBlock:^(NSDictionary *infoDict, BOOL isCancel) {
    //                _imgView.image = [infoDict valueForKey:UIImagePickerControllerOriginalImage];
}];