请看以下代码：
UILabel *tipLab = [[UILabel alloc]initWithFrame:CGRectMake(VIEW_WIDTH/2-(VIEW_WIDTH-90*MY_PROPORTION_SIZE)/2, 350*MY_PROPORTION_SIZE, VIEW_WIDTH-90*MY_PROPORTION_SIZE, 100*MY_PROPORTION_SIZE)]; //要显示的字符串 tipLab.text = TIPSTR; //下面两行设置UILabel多行显示 tipLab.lineBreakMode = NSLineBreakByCharWrapping; tipLab.numberOfLines = 0; //设置大小自适应 [tipLab sizeToFit];UILabel *tipLab = [[UILabel alloc]
