IOS 调用照相机、相册功能

来源：互联网发布：学游泳费用知乎编辑：程序博客网时间：2024/05/16 04:38

首先需要导入<AssetsLibrary/AssetsLibrary.h>、<Photos/Photos.h>这两个框架，然后遵循UIImagePickerControllerDelegate。

调用相册

#pragma mark 选择图片- (void)selectPhoto{    if ([PHPhotoLibrary authorizationStatus] == PHAuthorizationStatusRestricted || [PHPhotoLibrary authorizationStatus] == AVAuthorizationStatusDenied) {        NSString *appName = [[NSBundle mainBundle].infoDictionary valueForKey:@"CFBundleDisplayName"];        if (!appName) appName = [[NSBundle mainBundle].infoDictionary valueForKey:@"CFBundleName"];        NSString *info = [NSString stringWithFormat:@"请在%@的\"设置-隐私-照片\"选项中，\r允许%@访问你的手机相册。",[UIDevice currentDevice].model,appName];        UIAlertView *showAlert = [[UIAlertView alloc] initWithTitle:nil message:info delegate:nil cancelButtonTitle:@"我知道了" otherButtonTitles:nil];        [showAlert show];    }else {        //1.首先判断照片源是否可用        if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary]) {            //2.实例化            UIImagePickerController *imagePicker = [[UIImagePickerController alloc] init];            //2.1设置照片源            imagePicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;            //2.2是否允许修改            imagePicker.allowsEditing = YES;            //2.3设置代理            imagePicker.delegate = self;            //2.4显示控制器            [self presentViewController:imagePicker animated:YES completion:nil];        }    }}

调用照相机

#pragma mark 拍照- (void)takePhoto{    AVAuthorizationStatus authStatus = [AVCaptureDevice authorizationStatusForMediaType:AVMediaTypeVideo];    if (authStatus == AVAuthorizationStatusRestricted || authStatus ==AVAuthorizationStatusDenied) {        NSString *appName = [[NSBundle mainBundle].infoDictionary valueForKey:@"CFBundleDisplayName"];        if (!appName) appName = [[NSBundle mainBundle].infoDictionary valueForKey:@"CFBundleName"];        NSString *info = [NSString stringWithFormat:@"请在%@的\"设置-隐私-相机\"选项中，\r允许%@访问你的照相机。",[UIDevice currentDevice].model,appName];        UIAlertView *showAlert = [[UIAlertView alloc] initWithTitle:nil message:info delegate:nil cancelButtonTitle:@"我知道了" otherButtonTitles:nil];        [showAlert show];    } else { // 调用相机        if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {            UIImagePickerController *imagePicker = [[UIImagePickerController alloc] init];            imagePicker.sourceType = UIImagePickerControllerSourceTypeCamera;            imagePicker.allowsEditing = YES;            imagePicker.delegate = self;            [self presentViewController:imagePicker animated:YES completion:nil];        }    }}

代理方法

#pragma mark - UIImagePickerController代理#pragma mark 完成- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary<NSString *,id> *)info{    UIImage *image = info[@"UIImagePickerControllerEditedImage"];        [picker dismissViewControllerAnimated:YES completion:nil];}#pragma mark 取消- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker{    [picker dismissViewControllerAnimated:YES completion:nil];}

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