iphone - 用于多个按钮的 UIImagePickerController

Question

我有 4 个 UIButton 和 4 个 UIImgeView，每个按钮都应该使用 UIImagePickerController 更改其 UIImageView 的图像。 Button #1 应该更改 imageview #1 等等。一切都应该不同。它仅适用于第一个按钮和 ImageView ，但我不确定如何将它应用于所有 4 个。

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{

UIImage *image1 = [info objectForKey:UIImagePickerControllerOriginalImage];


NSData *data = UIImagePNGRepresentation(image1);
NSString *myGrabbedImage = @"myGrabbedImage.png";
NSArray *path = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentDirectory = [path objectAtIndex:0];
NSString *fullPathToFile = [documentDirectory stringByAppendingPathComponent:myGrabbedImage];

[data writeToFile:fullPathToFile atomically:YES];
[[self firstImageView]setImage:image1];


[self dismissViewControllerAnimated:YES completion:nil];

}

我知道这只会为第一个 imageView 设置一张图片，但我该如何为所有 4 个设置图片？

Answer 1

按下按钮的代码可以留下一个值来说明正在处理哪个按钮:

- (void) buttonPressed:(id)sender {
      imageViewBeingEdited = sender.imageView;
      // display image picker here
}

然后

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
    imageViewBeingEdited.image = [info objectForKey:UIImagePickerControllerOriginalImage];
    ...
}