如何绘制填充文字不隐藏的UILabel？

我会画的UILabel与代码如何绘制填充文字不隐藏的UILabel？

CustomLabel *label = [[CustomLabel alloc] initWithFrame:CGRectMake(0, 0, 260, 100)]; 
label.layer.borderColor = [[UIColor redColor] CGColor]; 
label.layer.borderWidth = 3.0; 
[label setFont:[UIFont fontWithName:@"Helvetica" size:16]]; 
CALayer * l1 = [label layer]; 
[l1 setMasksToBounds:YES]; 
[l1 setCornerRadius:10.0]; 

label.backgroundColor = [UIColor clearColor]; 
label.textAlignment = NSTextAlignmentLeft; // UITextAlignmentCenter, UITextAlignmentLeft 
label.textColor=[UIColor whiteColor]; 
label.backgroundColor = [UIColor redColor]; 
label.numberOfLines=4; 
label.lineBreakMode=NSLineBreakByWordWrapping; 
label.text = [NSString stringWithFormat:@"%@", message]; 
label.tag = index; 


[label sizeToFit];

当然，我会发现从计算器的解决方案为标签创建填充用代码

- (id)initWithFrame:(CGRect)frame{ 
    self = [super initWithFrame:frame]; 
    if (self) { 
     self.edgeInsets = UIEdgeInsetsMake(5,5,5,5); //customize padding here 
    } 
    return self; 
} 

- (void)drawTextInRect:(CGRect)rect { 
    [super drawTextInRect:UIEdgeInsetsInsetRect(rect, self.edgeInsets)]; 
}

一切工作正常，但文字在我的标签显示不好，这里是我的标签截图。

enter image description here