Question

- (IBAction)btn_actionTakePicture:(UIButton *)sender {
    UIImagePickerController *picker = [[UIImagePickerController alloc] init];
    picker.delegate = self;
    picker.allowsEditing = YES;
    picker.sourceType = UIImagePickerControllerSourceTypeCamera;

    [self presentViewController:picker animated:YES completion:NULL];

    //I want to know how to save the image into the UIImage *image = savingImage so that I can implement the next 2 lines

    UIImage *image = savingImage;
    UIImageWriteToSavedPhotosAlbum(image, nil, nil, nil);
}

最后两行代码依赖于将我捕捉的图像保存在变量savingImage中，那么我该如何实现呢？

Answer 1

您可以使用didFinishPickingMediaWithInfo。来自官方文件：

要将静止图像保存到用户的相机胶卷相册，请从imagePickerController：didFinishPickingMediaWithInfo：方法的主体内调用UIImageWriteToSavedPhotosAlbum函数。

阅读详情：https://developer.apple.com/library/ios/documentation/uikit/reference/UIImagePickerControllerDelegate_Protocol/UIImagePickerControllerDelegate/UIImagePickerControllerDelegate.html

也许是这样的：

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
UIImage *img = [info objectForKey:UIImagePickerControllerOriginalImage];
UIImageWriteToSavedPhotosAlbum(image, nil, nil, nil);
}

Answer 2

您需要从IBAction中删除这两行并添加此功能

//UIImage *image = savingImage;
//UIImageWriteToSavedPhotosAlbum(image, nil, nil, nil);

PS。你的UIImagePickerController *选择器需要是全局的你可能会错过很多其他的东西。看一下Apple的示例代码https://developer.apple.com/library/ios/samplecode/photopicker/Introduction/Intro.html

-(void)imagePickerController:(UIImagePickerController *)picker
      didFinishPickingImage : (UIImage *)image
                 editingInfo:(NSDictionary *)editingInfo
{

    NSLog(@"didFinishPickingImage ...");

    [picpicker dismissViewControllerAnimated:YES completion:nil];

    //save this image
    UIImageWriteToSavedPhotosAlbum(image, nil, nil, nil);

}

如何在我的应用程序中拍摄图像并将图像保存在IOS中？

2 个答案: