iPhone SDK关闭动作表并显示图库

Question

我正在构建这个应用程序并且非常成功。但是，我最近想改变用户选择上传图片的方式。它现在有一个动作表。问题是，当单击一个按钮时，我尝试关闭动作表，然后启动图像库，但它不起作用。谢谢你的帮助！

-(void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex {

    if (buttonIndex == 0) {

        [actionSheet dismissWithClickedButtonIndex:0 animated:NO];

        UIImagePickerController *picker = [[UIImagePickerController alloc] init];
        picker.sourceType = UIImagePickerControllerSourceTypeCamera;
        picker.delegate = self;

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


///////////

  UIActionSheet *actionsheet = [[UIActionSheet alloc]

                                  initWithTitle:@"Submit Photo"

                                  delegate:self

                                  cancelButtonTitle:@"Cancel"

                                  destructiveButtonTitle:nil

                                  otherButtonTitles:@"Take Photo",@"Select Photo from Gallery", nil];

    [actionsheet showInView:self.view];    

Answer 1

不是实现actionSheet:clickedButtonAtIndex:委托方法，而是实现actionSheet:didDismissWithButtonIndex:方法。然后你不需要自己解雇行动表。

确保在创建时将self作为代理传递给操作表。