UIImagePickerController简单使用

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UIImagePickerController为系统的照片选择器

选择相册里的照片

// 选择照片- (IBAction)pickerPhoto:(id)sender {    // 进入系统的相册UIImagePickerController    // 创建一个照片选择控制器    UIImagePickerController *imagePickerVc = [[UIImagePickerController alloc] init];    // 设置数据源    imagePickerVc.sourceType = UIImagePickerControllerSourceTypeSavedPhotosAlbum;    // 设置代理    imagePickerVc.delegate = self;    // modal    [self presentViewController:imagePickerVc animated:YES completion:nil];}#pragma mark - UIImagePickerControllerDelegate// 用户选择照片的时候调用- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info{    // 获取用户选择照片    UIImage *image = info[UIImagePickerControllerOriginalImage];    [self dismissViewControllerAnimated:YES completion:nil];    _drawView.image = image;    NSLog(@"%@",info);}

保存照片到系统相册中

// image:保存的图片    // completionTarget:保存完成的监听者    // completionSelector:保存完成的时候调用监听者的方法    // 保存图片到系统相册里    UIImageWriteToSavedPhotosAlbum(image, self, @selector(image:didFinishSavingWithError:contextInfo:), nil);    // NSInvocation;方法调用出错// 保存图片完成的时候调用- (void)image:(UIImage *)image didFinishSavingWithError:(NSError *)error contextInfo:(void *)contextInfo{    if (error) {        [MBProgressHUD showError:@"保存失败"];    }else{        [MBProgressHUD showSuccess:@"保存成功"];    }}

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