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Objective C，如何更改 UITextView 中的行

发布于 2024-10-25 04:31:35 字数 147 浏览 2 评论 0原文

我正在从网络服务器下载 UITextView 内容，它只返回文本，没有任何换行符。我将 \n、\\n、[CR] 等插入到我想要更改行的位置，但这些都不起作用。如何更改 UITextView 中文本的行？

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浅忆流年 2024-11-01 04:31:35

诡异的。对我有用。

_subtypeField = [[UITextView alloc] initWithFrame:CGRectMake(28, 189, self.bounds.size.width-30, 100)];
[_subtypeField setFont:[UIFont fontWithName:@"Helvetica" size:13]];
[_subtypeField setText:@"Examples:\n- Fentanyl\n- Dilaudid 2 mg PO q 4 hours prn moderate pain"];
[_subtypeField setTextAlignment:UITextAlignmentLeft];
[_subtypeField setTextColor:[UIColor colorWithRed:0.494 green:0.647 blue:0.808 alpha:1.0]];
[_subtypeField setOpaque:NO];
[_subtypeField setBackgroundColor:[UIColor clearColor]];
[_subtypeField setUserInteractionEnabled:NO];
[self addSubview:_subtypeField];

当您将 C 字符串转换为 NSString 时，也许会出现问题？换行符还在 NSString 中吗？

Weird. Works for me.

_subtypeField = [[UITextView alloc] initWithFrame:CGRectMake(28, 189, self.bounds.size.width-30, 100)];
[_subtypeField setFont:[UIFont fontWithName:@"Helvetica" size:13]];
[_subtypeField setText:@"Examples:\n- Fentanyl\n- Dilaudid 2 mg PO q 4 hours prn moderate pain"];
[_subtypeField setTextAlignment:UITextAlignmentLeft];
[_subtypeField setTextColor:[UIColor colorWithRed:0.494 green:0.647 blue:0.808 alpha:1.0]];
[_subtypeField setOpaque:NO];
[_subtypeField setBackgroundColor:[UIColor clearColor]];
[_subtypeField setUserInteractionEnabled:NO];
[self addSubview:_subtypeField];

Perhaps something goes wrong when you convert the C string into an NSString? Are the linefeeds still in the NSString?

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如此安好 2024-11-01 04:31:35

如果您要显示的文本是动态的，并且文本视图的宽度是固定的，那么您可以先根据文本计算文本视图的高度，然后在文本视图中显示该文本。这将自动更改文本视图中

我使用的代码行：-

    CGSize labelsize;
    UITextView *commentsTextView = [[UITextView alloc] init];;
    [commentsTextView setBackgroundColor:[UIColor clearColor]];
    NSString *text=@"sample Text";//give your text
    [commentsTextView setFont:[UIFont fontWithName:@"Helvetica"size:14]];
    labelsize=[text sizeWithFont:commentsTextView.font constrainedToSize:CGSizeMake(268, 2000.0)];
    commentsTextView.frame=CGRectMake(10, 24, 268, labelsize.height);
    [self.view addSubview:commentsTextView];
    [commentsTextView release];

If your text that you want to display is dynamic and the width of text view is fixed then you can first calculate the height of textview according to the text and then display that text in text view. This will automatically change the line in the text view

Code that I used:-

    CGSize labelsize;
    UITextView *commentsTextView = [[UITextView alloc] init];;
    [commentsTextView setBackgroundColor:[UIColor clearColor]];
    NSString *text=@"sample Text";//give your text
    [commentsTextView setFont:[UIFont fontWithName:@"Helvetica"size:14]];
    labelsize=[text sizeWithFont:commentsTextView.font constrainedToSize:CGSizeMake(268, 2000.0)];
    commentsTextView.frame=CGRectMake(10, 24, 268, labelsize.height);
    [self.view addSubview:commentsTextView];
    [commentsTextView release];

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