我正在做一个项目,动态地在 UILabel 宽度和高度上制作 NSString。 我试过:
NSString *text = [messageInfo objectForKey:@"compiled"];
writerNameLabel.numberOfLines = 0;
writerNameLabel.textAlignment = UITextAlignmentRight;
writerNameLabel.backgroundColor = [UIColor clearColor];
CGSize constraint = CGSizeMake(296,9999);
CGSize size = [text sizeWithFont:[UIFont systemFontOfSize:FONT_SIZE]
constrainedToSize:constraint
lineBreakMode:UILineBreakModeWordWrap];
NSLog(@"sizewidth = %f, sizeheight = %f", size.width, size.height);
NSLog(@"writerNameLabel.frame.size.width 1 -> %f",writerNameLabel.frame.size.width);
[writerNameLabel setFrame:CGRectMake(writerNameLabel.frame.origin.x, writerNameLabel.frame.origin.y, size.width, size.height)];
CGRect labelFram = writerNameLabel.frame;
labelFram.origin.x = cell.frame.size.width - writerNameLabel.frame.size.width - 80;
writerNameLabel.frame = labelFram;
NSLog(@"writerNameLabel.frame.size.width 2-> %f",writerNameLabel.frame.size.width);
请看绿色气泡而不是灰色气泡。 还是不对。
气泡代码
bubbleImageView.frame = CGRectMake(writerNameLabel.frame.origin.x, writerNameLabel.frame.origin.y, writerNameLabel.frame.size.width+15, writerNameLabel.frame.size.height+5);
请指教!谢谢!
最佳答案
那是因为你没有重用表格单元格,结构应该是这样的:
NSString *text = [messageInfo objectForKey:@"compiled"];
if(cell == nil)
{
writerNameLabel.numberOfLines = 0;
writerNameLabel.textAlignment = UITextAlignmentRight;
writerNameLabel.backgroundColor = [UIColor clearColor];
[cell addSubview:writerNameLabel];
}
else {
writerNameLabel = (UILabel *)[cell viewWithTag:WRITER_NAME_LABEL_TAG];
}
CGSize constraint = CGSizeMake(296,9999);
CGSize size = [text sizeWithFont:[UIFont systemFontOfSize:FONT_SIZE]
constrainedToSize:constraint
lineBreakMode:UILineBreakModeWordWrap];
[writerNameLabel setFrame:CGRectMake(writerNameLabel.frame.origin.x, writerNameLabel.frame.origin.y, size.width, size.height)];
我已经完成并回答了您的一些问题,这是编写 tableview Controller 的正确方法。你的问题将得到解决。
关于objective-c - 如何计算 UILabel 上 NSString 的宽高,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/12002314/