加载 inputAccessoryView 时出现问题

发布于 2024-10-21 16:51:53 字数 942 浏览 3 评论 0原文

我有一个仅由 UITextView 组成的应用程序。应用程序加载后，键盘就会出现，并且 AccessoryView 会加载到键盘顶部以便将其关闭。

这非常有效，直到我决定在应用程序加载时不想加载键盘。问题是，每当我尝试编辑文本时，应用程序就会崩溃（EXC_BAD_ACCESS）。我真的不明白为什么会这样。这是我的代码 - 标记了导致应用程序崩溃的段落：

- (void)viewWillAppear:(BOOL)animated {

// Make the keyboard appear when the application launches.
[super viewWillAppear:animated];
// [textView becomeFirstResponder];}

然后：

- (BOOL)textViewShouldBeginEditing:(UITextView *)aTextView {


    // this crashes app if no keyboard is loaded in viewdidload:

        if (textView.inputAccessoryView == nil) {
        textView.inputAccessoryView = accessoryView;    
        self.accessoryView = nil;

}


    return YES;
}

如果我注释掉最后一个 if 语句，则应用程序可以工作......但我没有附件视图。有可能我在 InterfaceBuilder 中做错了什么吗？ AttachmentView 是我的 ViewController 中的一个单独的视图。不过，它已正确连接（如果我在键盘打开的情况下启动应用程序，它确实可以完美工作）。

任何想法将不胜感激。抱歉，如果这是显而易见的，但我仍然是一个初学者，这些事情引起了巨大的头痛。

原文

I have an app which simply consists of an UITextView. Once the app loads, the keyboard appears and an AccessoryView is loaded on top of the keyboard so as to dismiss it.

This worked splendid until I decided that I don't want to load the keyboard when the app loads. The problem is that whenever I try to edit the text, the app crashes (EXC_BAD_ACCESS). I don't really understand why this should be. Here is my code -- the passage is marked which crashes the app:

- (void)viewWillAppear:(BOOL)animated {

// Make the keyboard appear when the application launches.
[super viewWillAppear:animated];
// [textView becomeFirstResponder];}

And then:

- (BOOL)textViewShouldBeginEditing:(UITextView *)aTextView {


    // this crashes app if no keyboard is loaded in viewdidload:

        if (textView.inputAccessoryView == nil) {
        textView.inputAccessoryView = accessoryView;    
        self.accessoryView = nil;

}


    return YES;
}

If I comment out the last if statement, the app works ... but I don't have my accessoryView. May it be possible that I've done something wrong in InterfaceBuilder? accessoryView is a separate view in my ViewController. It's properly connected, though (and it does work perfectly if I start with the app with keyboard on).

Any ideas would be very much appreciated. Sorry if this is obvious, but I'm still a beginner and these things cause huge headaches.

分享到QQ

分享到微博