iOS拍照之系统拍照

拍照在App中使用频次高，入门级别直接调用系统拍照

思路：

系统拍照使用UIImagePickerController

1.设置下plist，否则没权限，报错

2.判断摄像头，获取权限，否则弹出界面黑着

3.设置代理，实现代理

4.代理方法中获取拍照的图片/视频

上菜

plist中添加Privacy - Camera Usage Description，文案根据App需要来
权限

if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) { 

}

设置UIImagePickerController

UIImagePickerController *vc = [[UIImagePickerController alloc] init];

// 设置该属性的时候，出现拍照与拍视频选项

vc.mediaTypes = [UIImagePickerController availableMediaTypesForSourceType:UIImagePickerControllerSourceTypeCamera];

vc.sourceType = UIImagePickerControllerSourceTypeCamera;

vc.delegate = self;

vc.allowsEditing = NO;

// 设置摄像头[后置摄像头]

vc.cameraDevice = UIImagePickerControllerCameraDeviceRear;

// 设置闪光模式

vc.cameraFlashMode = UIImagePickerControllerCameraFlashModeAuto;

// 设置摄像头模式

vc.cameraCaptureMode = UIImagePickerControllerCameraCaptureModeVideo; // 当该模式设置为video的时候，meidaTypes设置出现拍照与拍视频选项时，先展示video视频拍摄选项

// 录制的最大时间

vc.videoMaximumDuration = 10;

// 视频质量

vc.videoQuality = UIImagePickerControllerQualityTypeHigh;

vc.modalPresentationStyle = UIModalPresentationFullScreen;

[[[[UIApplication sharedApplication] keyWindow] rootViewController] presentViewController:vc

                                                                                 animated:YES

                                                                               completion:nil];

代理实现

#pragma mark - UINavigationControllerDelegate, UIImagePickerControllerDelegate

- (void)imagePickerController:(UIImagePickerController *)picker

didFinishPickingMediaWithInfo:(NSDictionary<UIImagePickerControllerInfoKey,id> *)info {

    // 获取选中资源类型

    NSString *mediaType = [info objectForKey:UIImagePickerControllerMediaType];

    if ([mediaType isEqualToString:(NSString *)kUTTypeImage]) { // 拍照结果

        UIImage *image = nil;

        if (picker.allowsEditing) {

            image = [info objectForKey:UIImagePickerControllerEditedImage];

        } else {

            image = [info objectForKey:UIImagePickerControllerOriginalImage];

        }

        [picker dismissViewControllerAnimated:YES completion:nil];

    } else if ([mediaType isEqualToString:(NSString *)kUTTypeMovie]) { // 视频结果

        NSURL *url = [info objectForKey:UIImagePickerControllerMediaURL];

        // 视频存放到系统相册

        [PHPhotoLibrary requestAuthorization:^(PHAuthorizationStatus status) {

            if (status == PHAuthorizationStatusAuthorized) {

                [[PHPhotoLibrary sharedPhotoLibrary] performChanges:^{

                           [PHAssetChangeRequest creationRequestForAssetFromVideoAtFileURL:url];

                       } completionHandler:^(BOOL success, NSError * error) {

                           if (success) {

                               NSLog(@"保存视频到相册");

                           } else {

                               NSLog(@"保存视频到相册失败：%@", error);

                           }

                       }];

            } else {

                NSLog(@"无访问相册权限");

            }

            dispatch_async(dispatch_get_main_queue(), ^{

                [picker dismissViewControllerAnimated:YES completion:nil];

            });

        }];

    }

}

- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker {

    [picker dismissViewControllerAnimated:YES completion:nil];

}

结语：

UIImagePickerController使用方便，可拍照、视频。适用于拍照界面无定制、简单取图这类需求

巴特西

iOS拍照之系统拍照

拍照在App中使用频次高，入门级别直接调用系统拍照

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