UILabel

    UILabel * label = [[UILabel alloc]initWithFrame:CGRectMake(10, 200, 300, 200)];
    label.text = @"ssssssssssssssfsdfsdfsdfsdfsdfsdf";
    label.textColor = [UIColor redColor];
    label.font = [UIFont systemFontOfSize:30];
    label.font = [UIFont boldSystemFontOfSize:30];
    label.font = [UIFont italicSystemFontOfSize:30];
    label.shadowColor = [UIColor grayColor];
    label.shadowOffset = CGSizeMake(10, 10);
    label.textAlignment = NSTextAlignmentRight;
    label.highlighted = YES;
    label.highlightedTextColor = [UIColor blueColor];
    label.adjustsFontSizeToFitWidth = YES; //自适应
    //label.minimumScaleFactor = 10;  //缩放比率
    //label.numberOfLines = 2;
//view
    label.backgroundColor = [UIColor purpleColor];
    label.alpha = 1;
    label.hidden = NO;
//layer
    label.layer.borderWidth = 10;
    label.layer.borderColor = [[UIColor orangeColor]CGColor];
    label.layer.shadowOffset = CGSizeMake(10, 30);
    label.layer.shadowColor = [[UIColor greenColor]CGColor];
    label.layer.shadowOpacity = 0.3;
    label.layer.masksToBounds = YES;
    label.layer.cornerRadius = 20;