iPhone设置UITextView委托破坏自动完成

发布于 2024-08-26 09:58:25 字数 557 浏览 16 评论 0原文

我有一个 UITextField，我想通过以下方式启用自动完成：

[self.textView setAutocorrectionType:UITextAutocorrectionTypeYes];

这正常工作，除非我给 UITextView 一个委托。设置委托后，自动完成功能将停止工作。委托只有以下方法：

- (void)textViewDidChange:(UITextView *)textView
{
 self.textView.text = [self.textView.text stringByReplacingOccurrencesOfString:@"\n" withString:@""];

 int left = LENGTH_MAX -[self.textView.text length];
 self.characterCountLabel.text = [NSString stringWithFormat:@"%i",abs(left)];

}

有谁知道如何同时启用自动完成和委托集？

谢谢！
特里斯坦

原文

I have a UITextField that I would like to enable auto completion on by:

[self.textView setAutocorrectionType:UITextAutocorrectionTypeYes];

This works normally, except when I give the UITextView a delegate. When a delegate is set, auto complete just stops working. The delegate has only the following method:

- (void)textViewDidChange:(UITextView *)textView
{
 self.textView.text = [self.textView.text stringByReplacingOccurrencesOfString:@"\n" withString:@""];

 int left = LENGTH_MAX -[self.textView.text length];
 self.characterCountLabel.text = [NSString stringWithFormat:@"%i",abs(left)];

}

Does anyone know how to have both auto complete enabled and a delegate set?

Thanks!
Tristan

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你没皮卡萌 2024-09-02 09:58:25

它可能会破坏自动完成功能，因为您同时修改 UITextView 中的文本。

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醉酒的小男人 2024-09-02 09:58:25

NSRange r= [self.textView.text rangeOfString:@"\n"];
if(r.location!=NSNotFound) //must check before replacing new lines right away, otherwise spellcheck gets broken
{
    self.textView.text = [self.textView.text stringByReplacingOccurrencesOfString:@"\n" withString:@""];
}

该问题是由于每次更改文本时可能会修改文本（即调用替换方法）而引起的。解决方案是仅在必要时调用替换方法。

NSRange r= [self.textView.text rangeOfString:@"\n"];
if(r.location!=NSNotFound) //must check before replacing new lines right away, otherwise spellcheck gets broken
{
    self.textView.text = [self.textView.text stringByReplacingOccurrencesOfString:@"\n" withString:@""];
}

The problem was caused by doing something that potentially modifies the text every time it was changed (ie calling replace method). The solution was to only call the replace method when it was necessary.

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