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最后发现需要6.0以后,因为nsfontattributename之类的是6.0以后的api
长久以来,我以为富文本是一种在ios中使用特别麻烦的事情,但是不经意的研究发现,其实并没有那么难!
以下的代码实现了uilabel中放置富文本。
NSMutableAttributedString *richTask = [[NSMutableAttributedString alloc] initWithString:task]; NSDictionary *urgentAttributes = @{NSFontAttributeName : [UIFont fontWithName:@"Courier" size:24], NSStrokeWidthAttributeName : @3.0,NSStrokeColorAttributeName:[UIColor greenColor]}; [richTask setAttributes:urgentAttributes range:urgentRange];
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { NSString *identifier = nil; NSString *task = [self.tasks objectAtIndex:indexPath.row]; NSRange urgentRange = [task rangeOfString:@"URGENT"]; if (urgentRange.location == NSNotFound) { identifier = @"plainCell"; } else { identifier = @"attentionCell"; } UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:identifier]; // Configure the cell... UILabel *cellLabel = (UILabel *)[cell viewWithTag:1]; NSMutableAttributedString *richTask = [[NSMutableAttributedString alloc] initWithString:task]; NSDictionary *urgentAttributes = @{NSFontAttributeName : [UIFont fontWithName:@"Courier" size:24], NSStrokeWidthAttributeName : @3.0,NSStrokeColorAttributeName:[UIColor greenColor]}; [richTask setAttributes:urgentAttributes range:urgentRange]; if (urgentRange.location != NSNotFound) { NSRange otherPartRange = NSMakeRange(urgentRange.length+urgentRange.location, task.length-urgentRange.length); NSDictionary* otherPartAttributes = @{NSFontAttributeName : [UIFont fontWithName:@"Courier" size:12], NSStrokeWidthAttributeName : @0,NSStrokeColorAttributeName:[UIColor redColor]}; [richTask setAttributes:otherPartAttributes range:otherPartRange]; } cellLabel.attributedText = richTask; return cell; }
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