在iPhone SDK中获取iOS 7的正确文本高度 [英] Get correct text height for iOS 7 in iPhone SDK

问题描述

我需要获得文本高度并根据文本高度增加单元格的高度，文本高度会动态增加或减少。我现在成功地为iOS 6和之前的版本获得正确的文本高度，但我无法获得正确的iOS 7及更高版本。我用Google搜索并找到了许多解决方案，但这不起作用。你可以看到相同单元格的附加图像，看到iOS 7文本中的差异是截断的，在iOS 6中它显示正确的大小。我用 UILabel 。按照我的代码，我正在做什么。请仔细研究并指导我更好的解决方案，如果有人事先经历过这类事情。

I need to get text height and grow cell's height depending upon text height which increase or decrease dynamically. I now successfully getting correct height of text for iOS 6 and prior but I am not able to get correct height iOS 7 and later. I googled and found many solution but this doesn't worked. You can see attached Image of same cell and see difference in iOS 7 text is truncating and in iOS 6 its showing correct size. I used UILabel. Follow my code of what exactly I am doing. Kindly look into it and guide me better solution if any one experienced this sort of thing earlier.

- (CGSize)getSizeOfText:(NSString *)text withFont:(UIFont *)font widthOftext:(int )txtWidth
{
CGSize boundingSize = CGSizeMake(txtWidth, 9999);
CGSize size;
if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 7)
{
    CGRect textRect = [text boundingRectWithSize:boundingSize
                                         options:NSStringDrawingUsesLineFragmentOrigin
                                      attributes:@{NSFontAttributeName:font}
                                         context:nil];
    size=textRect.size;
}
else
{
    CGSize requiredSize = [text sizeWithFont:font constrainedToSize:boundingSize lineBreakMode:UILineBreakModeWordWrap];
    size=requiredSize;
}

return size;
}

在iOS 6设备上。

在iOS 7设备上。

推荐答案

请尝试此代码

在标题中声明#define kMaxHeight 1000.0f。

Declare #define kMaxHeight 1000.0f in header.

        CGSize sizeNew = [YourText sizeWithFont:[UIFont fontWithName:Fontname size:intFontSize]
                 constrainedToSize:CGSizeMake(320, kMaxHeight)
                     lineBreakMode:NSLineBreakByWordWrapping];
         txtText.numberOfLines = 0;

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