iphone – UITextView – 水平滚动？

发布时间：2020-12-15 01:47:05 所属栏目：百科来源：网络整理

导读：如何创建水平滚动UITextView？当我以编程方式设置文本时,它会添加自动换行符,所以我只能垂直滚动… titleView.text = @"this is a very long text. this is a very long text. this is a very long text. this is a very long text. this is a very long te

如何创建水平滚动UITextView？

当我以编程方式设置文本时,它会添加自动换行符,所以我只能垂直滚动…

titleView.text = @"this is a very long text. this is a very long text. this is a very long text. this is a very long text. this is a very long text.";

谢谢你的回答.

编辑：
到目前为止我试过这个：

UIScrollview *yourScrollview = [[UIScrollView alloc] initWithFrame:CGRectMake(0,self.view.frame.size.width,50)];
CGFloat textLength = [titleView.text sizeWithFont:titleView.font constrainedToSize:CGSizeMake(9999,50) lineBreakMode:NSLineBreakByWordWrapping].width;

yourScrollview.contentSize = CGSizeMake(textLength + 200,500); //or some value you like,you may have to try this out a few times

titleView.frame = CGRectMake(titleView.frame.origin.x,titleView.frame.origin.y,textLength,titleView.frame.size.height);

[yourScrollview addSubview: titleView];

NSLog(@"%f",textLength);

但我收到了：’威胁1：信号SIGABRT’

解决方法

我还没有做过这样的事情,但我会尝试以下步骤来完成这个：

>创建UIScrollview * yourScrollview = [[UIScrollView alloc] initWithFrame：CGRectMake(0,50)]; //
>使用CGFloat textLength = [titleView.text sizeWithFont：titleView.font constrainedToSize：CGSizeMake(9999,50)lineBreakMode：NSLineBreakByWordWrapping] .width;
获得文本的最终长度
>设置yourScrollView.contentSize = CGSizeMake(textLength 20,50); //或者你喜欢的一些价值,你可能需要尝试几次
>还设置titleTextView.frame = CGRectMake(titleTextView.frame.origin.x,titleTextView.frame.origin.y,titleTextView.frame.size.height);
>使titleView成为yourScrollView的子视图：[yourScrollView addSubview：titleView];

希望这会给你一个良好的开端！

编辑：本准则将有效：

请注意我使用的是UILabel而不是UITextView.

UILabel *titleView          = [[UILabel alloc] initWithFrame:CGRectMake(0,40)];
    titleView.text              = @"this is a very long text. this is a very long text. this is a very long text. this is a very long text. this is a very long text.";
    titleView.font              = [UIFont systemFontOfSize:18];
    titleView.backgroundColor   = [UIColor clearColor];
    titleView.numberOfLines     = 1;

    UIScrollView *myScrollView  = [[UIScrollView alloc] initWithFrame:CGRectMake(0,50)];
    CGFloat textLength          = [titleView.text sizeWithFont:titleView.font constrainedToSize:CGSizeMake(9999,50) lineBreakMode:NSLineBreakByWordWrapping].width;
    myScrollView.contentSize    = CGSizeMake(textLength + 20,50); //or some value you like,you may have to try this out a few times

    titleView.frame             = CGRectMake(titleView.frame.origin.x,titleView.frame.size.height);

    [myScrollView addSubview: titleView];
    [self.view addSubview:myScrollView];
    [titleView release];
    [myScrollView release];

（编辑：李大同）

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