UILabel自适应高度跟自动换行

UILabel自适应高度和自动换行

UILabel *label = [[UILabel alloc] init];

NSString *text = @"这是一个测试！！！";

label.text = text;

[label setNumberOfLines:0];

UIFont *font = [UIFont fontWithName:@"Arial" size:14];

//设置字体

label.font = font;

CGSize constraint = CGSizeMake(300, 20000.0f); //label宽度设为300，高度最多为20000

CGSize size = [text sizeWithFont:font constrainedToSize:constraintlineBreakMode:UILineBreakModeWordWrap];

[label setFrame:CGRectMake(10, 0, size.width, size.height)];

[self.view addSubview:label];