仅当范围从零开始时才对字符串进行底层处理。如果我从 1 开始,那么它就起作用了。无论如何,绿色都有效。
+ (NSAttributedString*)returnNSAttributedString:(NSString*)string range:(NSRange)range WithColour:(UIColor*)colour WithUnderLine:(BOOL)underline {
NSMutableAttributedString *attributedString =
[[NSMutableAttributedString alloc] initWithString:string];
if (underline) {
[attributedString addAttributes:@{NSUnderlineStyleAttributeName: @(NSUnderlineStyleSingle)} range:range];
}
[attributedString addAttribute:NSForegroundColorAttributeName value:colour range:range];
[attributedString addAttribute:NSForegroundColorAttributeName value:[UIColor redColor] range:NSRangeFromString(string)];
return attributedString;
}
它适用于 iOS 7 而不是 iOS 8。
最佳答案
您可以使用 NSUnderlineStyleAttributeName 和 NSUnderlineColorAttributeName 属性。你可以这样使用它:
NSRange foundRange = [wordString rangeOfString:@"Base Mix"];
if (foundRange.location != NSNotFound)
{
[wordString beginEditing];
[wordString addAttribute:NSUnderlineStyleAttributeName value:[NSNumber numberWithInt:1] range:foundRange];
[wordString addAttribute:NSUnderlineColorAttributeName value:[NSColor redColor] range:foundRange];
[wordString endEditing];
}