附加NSString和NSMutableAttributedString

Question

我想把NSString和NSMutableAttributedString合并。

在下面的代码中，我想将self.txtSearch设置为自定义粗体大小和颜色。

密码-

 - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
SearchViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"SearchViewCell"];
AutoSuggestModel *autoSuggestModel = [self.autoSuggestArray objectAtIndex:indexPath.row];

if ([[autoSuggestModel type] isEqualToString:@"product"] || [[autoSuggestModel type] isEqualToString:@"category"]){

    cell.lblText.text = [NSString stringWithFormat:@"%@ in %@", self.txtSearch , [autoSuggestModel label]] ;

}else{
    cell.lblText.text = [autoSuggestModel label];
}
return cell;
}

我可以用下面的代码做粗体的特殊字符串。但我想附加这两条线。

NSMutableAttributedString *boldString = [[NSMutableAttributedString alloc] initWithString:self.txtSearch];
    NSRange boldRange = [[autoSuggestModel label]   rangeOfString:self.txtSearch];
    [boldString addAttribute: NSFontAttributeName value:[UIFont boldSystemFontOfSize:16] range:boldRange];
    [cell.lblText setAttributedText: boldString];

Answer 1

粗略地看一下 documentation有一个称为“组合字符串”的部分和一个名为stringByAppendingString:的方法。

使用这种方法，它应该是难以置信的直截了当地完成你想要做的事情。

NSMutableAttributedString *boldString = [[NSMutableAttributedString alloc] 
    initWithString:[self.txtSearch stringByAppendingString:yourMutableString]];

Answer 2

更新您的方法，如

if ([[autoSuggestModel type] isEqualToString:@"product"] || [[autoSuggestModel type] isEqualToString:@"category"]){

        cell.textLabel.attributedText = [self getBoldText:cell withSearch:@"search text" withAutoSuggestModel:@"autoSuggestModel"];

    }else{
        cell.lblText.text = [autoSuggestModel label];
   }

//通过以下方法检查上面的代码

-(NSMutableAttributedString*)getBoldText:(UITableViewCell*)cell withSearch:(NSString*)searchText withAutoSuggestModel:(NSString*)autoSuggestModelText{
NSString *title = [NSString stringWithFormat:@"%@ in %@", searchText,autoSuggestModelText];
cell.textLabel.text = title;
UIColor *color = [UIColor redColor];
UIFont *font = [UIFont boldSystemFontOfSize:16];

NSDictionary *attrs = @{NSForegroundColorAttributeName : color,NSFontAttributeName:font};

NSMutableAttributedString * attrStr = [[NSMutableAttributedString alloc] initWithAttributedString:cell.textLabel.attributedText];
[attrStr addAttributes:attrs range:[title rangeOfString:autoSuggestModelText]];
return attrStr;

}