html字符串从服务器获取我尝试转换为属性字符串。使用
NSAttributedString *attributedString = [[NSAttributedString alloc]
initWithData: [htmlString dataUsingEncoding:NSUnicodeStringEncoding]
options: @{ NSDocumentTypeDocumentAttribute: NSHTMLTextDocumentType, NSCharacterEncodingDocumentAttribute: [NSNumber numberWithInt:NSUTF8StringEncoding] }
documentAttributes: nil
error: nil
];
具有 u00002028 n的属性字符串，导致显示字符串的间距和线路折断。如何删除此类内容。
从nsmutableattributterstring
的trim领先和落后空间NSString * _strAchievementMsg= @" Hi Test the White space ";
NSString * htmlString = [NSString stringWithFormat:@"<html><div>%@</div></html>",_strAchievementMsg];
NSMutableAttributedString *attString = [[NSMutableAttributedString alloc]
initWithData: [htmlString dataUsingEncoding:NSUnicodeStringEncoding]
options: @{ NSDocumentTypeDocumentAttribute: NSHTMLTextDocumentType, NSCharacterEncodingDocumentAttribute: [NSNumber numberWithInt:NSUTF8StringEncoding] }
documentAttributes: nil
error: nil
];
NSCharacterSet *charSet = [NSCharacterSet whitespaceAndNewlineCharacterSet];
NSRange range = [attString.string rangeOfCharacterFromSet:charSet];
while (range.length != 0 && range.location == 0)
{
[attString replaceCharactersInRange:range withString:@""];
range = [attString.string rangeOfCharacterFromSet:charSet];
}
// Trim trailing whitespace and newlines.
range = [attString.string rangeOfCharacterFromSet:charSet
options:NSBackwardsSearch];
while (range.length != 0 && NSMaxRange(range) == attString.length)
{
[attString replaceCharactersInRange:range
withString:@""];
range = [attString.string rangeOfCharacterFromSet:charSet
options:NSBackwardsSearch];
}
在iOS 7中，uikit添加了一个initwithdata：option：docutsatattributes：error：可以使用html初始化nsatttribedstring的方法，请尝试此
[[NSAttributedString alloc] initWithData:[htmlString dataUsingEncoding:NSUTF8StringEncoding]
options:@{NSDocumentTypeDocumentAttribute: NSHTMLTextDocumentType,
NSCharacterEncodingDocumentAttribute: @(NSUTF8StringEncoding)}
documentAttributes:nil error:nil];
NSString *string = [attributedString.string stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]];
仅剥夺领先和落后的空格。
NSArray *components = [string componentsSeparatedByCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]];
string = [components componentsJoinedByString:@""];