有些情况就是需要查找某个字符串并高亮,但有些需求就是需要全局模糊查找,找到符合的字符串并高亮。造了个小轮子
###效果图
#pragma mark -- 设置在一个文本中所有特殊字符的特殊颜色
+ (NSMutableAttributedString *)setAllText:(NSString *)allStr andSpcifiStr:(NSString *)keyWords withColor:(UIColor *)color specifiStrFont:(UIFont *)font{
NSMutableAttributedString *mutableAttributedStr = [[NSMutableAttributedString alloc] initWithString:allStr];
if (color == nil) {
color = [UIColor redColor];
}
if (font == nil) {
font = [UIFont systemFontOfSize:17];
}
for (NSInteger j=0; j<=keyWords.length-1; j++) {
NSRange searchRange = NSMakeRange(0, [allStr length]);
NSRange range;
NSString *singleStr = [keyWords substringWithRange:NSMakeRange(j, 1)];
while
((range = [allStr rangeOfString:singleStr options:NSLiteralSearch range:searchRange]).location != NSNotFound) {
//改变多次搜索时searchRange的位置
searchRange = NSMakeRange(NSMaxRange(range), [allStr length] - NSMaxRange(range));
//设置富文本
[mutableAttributedStr addAttribute:NSForegroundColorAttributeName value:color range:range];
[mutableAttributedStr addAttribute:NSFontAttributeName value:font range:range];
}
}
return mutableAttributedStr;
}