動態UILabel截斷文本

Question

我使用this answer中提供的代碼來創建動態標籤，並且它在大多數情況下都能正常工作。但是，只要標籤文本長度超過94個字符，它就會被截斷並省略「。

還有一件更奇怪的事情是，如果我向字符串添加更多字符，它們會顯示，但最後2行仍然會被截斷。

例如，

字符串：

this is a very very long string 
with lots of words to test the 
dynamic bubble sizing one two three. 

顯示出來是這樣的：

this is a very very long string 
with lots of words to test the 
dynamic bubble sizing one tw... 

但是當我通過在標籤再次使用同一個句子一倍字符串時，它表現出更多的德文本，但仍將截斷它。

例如，

字符串：

this is a very very long string 
with lots of words to test the 
dynamic bubble sizing one two 
three. this is a very very long 
string with lots of words to test 
the dynamic bubble sizing one 
two three. 

這樣表示：

this is a very very long string 
with lots of words to test the 
dynamic bubble sizing one two 
three. this is a very very long 
string with lots of words to tes... 

下面是我使用的代碼。

NSString *temp = [NSString stringWithFormat:@"this is a very very long string with lots of words to test the dynamic bubble sizing one two three"]; 

captionLabel.text = temp; 
//Calculate the expected size based on the font and linebreak mode of your label 
CGSize maximumLabelSize = CGSizeMake(296,9999); 

CGSize expectedLabelSize = [temp sizeWithFont:captionLabel.font 
            constrainedToSize:maximumLabelSize 
             lineBreakMode:captionLabel.lineBreakMode]; 

//adjust the label the the new height. 
CGRect newFrame = captionLabel.frame; 
newFrame.size.height = expectedLabelSize.height; 
captionLabel.frame = newFrame; 

希望有人有一個想法，因爲這讓我撓了撓頭。

編輯

使用captionLabel.frame.size.width而不是硬編碼的296修好了，感謝@troolee，如果他/她選擇創建一個答案，我將迎來它是正確的。

Answer 1

我一直希望@troolee現在可以讓他的評論成爲一個答案，但既然他沒有，我會發布答案並將其標記爲正確，以便我可以關閉此問題。

使用captionLabel.frame.size.width而不是硬編碼296修復它。

Answer 2

NSString * test=@"this is test this is test inthis is test ininthis is test inthis is test inthis is test in uilabel ...this is test in uilabel ...this is test in uilabel ...this is test in uilabel ...this is test in uilabel ...this is test in uilabel ...this is test in uilabel ...this is test in uilabel ...this is test in uilabel ...this is test in uilabel ...this is test in uilabel ...this is test in uilabel ...this is test in uilabel ...this is test in uilabel ...this is test in uilabel ...this is test in uilabel ...this is test in uilabel END"; 

     testLabel.text = test; 
     testLabel.numberOfLines = 0; //will wrap text in new line 
     [testLabel sizeToFit]; 

     [self.view addSubview:testLabel]; 

這一定會幫助你。

感謝

Answer 3

請嘗試以下UILabel類別。感謝創造者。

的UILabel + VAlign.h

#import <UIKit/UIKit.h> 
#import <Foundation/Foundation.h> 

@interface UILabel (VAlign) 
- (void) setVerticalAlignmentTopConstrainedToSize:(CGSize)size; 
@end 

的UILabel + VAlign.h

#import "UILabel+VAlign.h" 

@implementation UILabel (VAlign) 

- (void) setVerticalAlignmentTopConstrainedToSize:(CGSize)size 
{ 
    CGSize textSize = [self.text sizeWithFont:self.font 
          constrainedToSize:size 
           lineBreakMode:self.lineBreakMode]; 

    CGRect textRect = CGRectMake(self.frame.origin.x, 
           self.frame.origin.y, 
           self.frame.size.width, 
           textSize.height); 
    [self setFrame:textRect]; 
    [self setNeedsDisplay]; 
} 

@end 

Answer 4

相反的captionLabel.lineBreakMode，只寫UILineBreakModeWordWrap。它應該工作。