iphone - 编辑： UITextView 标签被切成两半（水平）

Question

我需要帮助解决这个特殊的问题。我有一个多项选择题应用程序，我可以选择 UITextview。有时，无论出于何种原因，选项 D 都会被减半。

截屏：

不知道这里发生了什么。我基本上让 UITextView 框架调整到它的 contentSize。

                CGRect dFrame = choiceD.frame;
                dFrame.size.height = choiceD.contentSize.height;
                choiceD.frame = dFrame;

有任何想法吗？提前致谢。

Answer 1

计算字符串的大小：

    NSString *choiceDString = @"Equal the present value....";
    CGSize size = [choiceDString sizeWithFont:[UIFont systemFontOfSize:CHOICE_FONT_SIZE] constrainedToSize:CGSizeMake(CHOICE_WIDTH, 100000)];

初始化一个标签以包含选择字符串：

    UILabel *choiceDLabel = [[UILabel alloc] initWithFrame:CGRectMake(0,0,size.width,size.height)];
    choiceDLabel.text= choiceDString;

为按钮添加子视图标签：

    [button addSubview:choiceLabel];

Answer 2

使用此代码..您已根据您的文本长度定义标签的高度...

NSString *summary;
summary = @" your text";
CGSize sizeofbuttonorlable = [summary sizeWithFont:[UIFont systemFontOfSize:30] 
               constrainedToSize:CGSizeMake(self.view.bounds.size.width - 40, MAXFLOAT)  
                   lineBreakMode:UILineBreakModeWordWrap];

CGRect frame = CGRectMake(0.0f, 0.0f, 320.0f, sizeofbuttonorlable.height);
UILabel *choiceDLabel = [[UILabel alloc] initWithFrame:frame];
choiceDLabel.text= summary;
[button addSubview:choiceLabel];

希望，这会帮助你......冷静

Answer 3

我的建议是首先计算您在 textView 中输入的文本的大小，例如：-

      //Give the maximum size of label which that label can have.
CGSize maximumLabelSize = CGSizeMake(300,500);
CGSize expectedLabelSize = [Label.text sizeWithFont:Label.font constrainedToSize:maximumLabelSize lineBreakMode:UILineBreakModeWordWrap];

      //adjust the label the new height.
CGRect newDescFrame = Label.frame;
newLabelFrame.size.height = expectedLabelSize.height;
NSLog(@"%f",newLabelFrame.size.height);
      //adjust the label the new width.
newLabelFrame.size.width = expectedLabelSize.width;
NSLog(@"%f",newLabelFrame.size.width);
      //Set the label size according to the new height and width.
label.frame = newLabelFrame;

在 textView 中输入文本后编写上述代码。希望它有所帮助。谢谢:)