UITextView textviewshouldendediting 从未调用过

发布于 2024-11-09 18:58:16 字数 747 浏览 0 评论 0原文

我有一个像这样的 UITextView 设置:

    UITextView *textView = [[UITextView alloc] initWithFrame:CGRectMake(10, 40, 280, 240)];
    [textView setBackgroundColor:[UIColor greenColor]];
    [textView setFont:[UIFont fontWithName:@"MyriadPro-Regular" size:13]];
    [textView setTextColor:[UIColor blackColor]];
    [textView setText:@"Your Message...."];
    [textView setBackgroundColor:[UIColor clearColor]];
    [textView setDelegate:self];
    [textView setReturnKeyType:UIReturnKeyDone];

我期望当用户按下键盘上的“完成”按钮时,将调用此方法(我已实现):

- (BOOL)textViewShouldEndEditing:(UITextView *)textView {
    NSLog(@"called");
    [textView resignFirstResponder];
    return YES;
}

但此方法永远不会被调用..我做错了什么? 谢谢。

I have a UITextView setup like this:

    UITextView *textView = [[UITextView alloc] initWithFrame:CGRectMake(10, 40, 280, 240)];
    [textView setBackgroundColor:[UIColor greenColor]];
    [textView setFont:[UIFont fontWithName:@"MyriadPro-Regular" size:13]];
    [textView setTextColor:[UIColor blackColor]];
    [textView setText:@"Your Message...."];
    [textView setBackgroundColor:[UIColor clearColor]];
    [textView setDelegate:self];
    [textView setReturnKeyType:UIReturnKeyDone];

I am expecting that when the user pressed the "Done" button on keyboard, this method will be invoked (which I have implemented):

- (BOOL)textViewShouldEndEditing:(UITextView *)textView {
    NSLog(@"called");
    [textView resignFirstResponder];
    return YES;
}

But this method never get's called..What am I doing wrong?
Thanks.

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同尘 2024-11-16 18:58:16

当您设置返回键类型时,它不会改变文本视图的行为。在 Return 上,它将向文本视图添加换行符。因此,如果您不希望文本视图是多行的,则可以捕获 \nresignFirstResponder

- (BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text {
    if ( [text isEqualToString:@"\n"] ) {
        [textView resignFirstResponder];
    }

    return YES;
}

附带说明一下,在您放弃第一响应者状态后,将调用 textViewShouldEndEditing:

如果您想在文本视图中保留换行符,您应该考虑使用 文本视图的inputAccessoryView此处就是一个示例。

While you set the return key type, it doesn't alter text view's behavior. On Return, it will add a newline to the text view. So if you don't want your text view to be multiline, you can capture the \n and resignFirstResponder.

- (BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text {
    if ( [text isEqualToString:@"\n"] ) {
        [textView resignFirstResponder];
    }

    return YES;
}

On a side note, textViewShouldEndEditing: is called after you resign your first responder status.

If you want to retain newline characters in your text view, you should consider using the inputAccessoryView of the text view. An example for that is here.

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