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我正在构建这个应用程序并且非常成功。然而，我最近只是想改变用户选择上传图片的方式。它现在带有一个操作表。问题是，当单击按钮时，我尝试关闭操作表，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];
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1 回答 1

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代替实现actionSheet:clickedButtonAtIndex:委托方法，实现actionSheet:didDismissWithButtonIndex:方法。然后，您不需要自己关闭操作表。

并确保self在创建它时作为委托传递给操作表。

于 2012-11-16T00:10:53.617 回答