NSString *contentStr = @"總以為,在最初的地方,有一個最原來的我,就也會有一個最原來的你";      UILabel *tempLabel = [[UILabel alloc] init];   //設置背景顏色   tempLabel.backgroundColor = [UIColor redColor];   //設置內容   tempLabel.text = contentStr;   //設置字體顏色   tempLabel.textColor = [UIColor whiteColor];   //設置字體大小   tempLabel.font = [UIFont systemFontOfSize:15.0];   //設置文本是否多行顯示   tempLabel.numberOfLines = 0;   tempLabel.lineBreakMode = NSLineBreakByWordWrapping;   //設置UILabel根據(jù)文字自適應高度   CGSize size = [tempLabel sizeThatFits:CGSizeMake(100, MAXFLOAT)];   //設置frame   tempLabel.frame = CGRectMake(50, 100, 100, size.height);   [self.view addSubview:tempLabel];   //設置label的行間距   NSMutableAttributedString *attributedString = [[NSMutableAttributedString alloc] initWithString:contentStr];   NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStyle alloc] init];   [paragraphStyle setLineSpacing:8];   [attributedString addAttribute:NSParagraphStyleAttributeName value:paragraphStyle range:NSMakeRange(0, [contentStr length])];   [tempLabel setAttributedText:attributedString];   [tempLabel sizeToFit];