我有一个UITextView,我正在管理一个NSAttributedString,最初通过键盘正常输入.我将归因的字符串保存为
HTML,看起来不错.
当我再次加载它,并将其转换回归属的字符串从HTML,字体大小似乎改变.
当我再次加载它,并将其转换回归属的字符串从HTML,字体大小似乎改变.
例如,加载的HTML如下所示：
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> <html> <head> <Meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <Meta http-equiv="Content-Style-Type" content="text/css"> <title></title> <Meta name="Generator" content="Cocoa HTML Writer"> <style type="text/css"> p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 21.0px Helvetica; color: #000000; -webkit-text- stroke: #000000} span.s1 {font-family: 'Helvetica'; font-weight: normal; font-style: normal; font-size: 21.00pt; font-kerning: none} </style> </head> <body> <p class="p1"><span class="s1">There is some text as usual lots of text</span></p> </body> </html>
// convert to attributed string
NSError *err;
NSAttributedString *as = [[NSAttributedString alloc] initWithData:data3
options:@{NSDocumentTypeDocumentAttribute: NSHTMLTextDocumentType,NSCharacterEncodingDocumentAttribute: @(NSUTF8StringEncoding)}
documentAttributes:nil
error:&err] ;
NSMutableAttributedString *res = [as mutableCopy];
[res enumerateAttribute:NSFontAttributeName inRange:NSMakeRange(0,res.length) options:0 usingBlock:^(id value,NSRange range,BOOL *stop) {
if (value) {
UIFont *oldFont = (UIFont *)value;
NSLog(@"On Loading: Font size %f,in range from %d length %d",oldFont.pointSize,range.location,range.length);
}
}];
On Loading: Font size 28.000000,in range from 0 length 40 On Loading: Font size 21.000000,in range from 40 length 1
基本上每次加载字符串时,字体大小都会增加.我需要将其存储为HTML而不是NSData,因为它也将被其他平台使用.
有人有什么想法为什么会发生这种情况吗？
解决方法
我也遇到这个问题,我通过迭代属性修复它,并重新排列旧的字体大小如下
NSMutableAttributedString *res = [attributedText mutableCopy];
[res beginEditing];
[res enumerateAttribute:NSFontAttributeName
inRange:NSMakeRange(0,res.length)
options:0
usingBlock:^(id value,BOOL *stop) {
if (value) {
UIFont *oldFont = (UIFont *)value;
UIFont *newFont = [oldFont fontWithSize:15];
[res addAttribute:NSFontAttributeName value:newFont range:range];
}
}];
[res endEditing];
[self.textFileInputView setAttributedText:res];
