iOS开发之字数不一的多标签Demo

有朋友让帮他写一个封装的字数不一的多标签视图，所以今天将代码展示一下，供大家学习

代码中封装了两种方法，分别是：1.传递数组，数组中是NSString类型的方法；2.传递数组，数组中是NSDictionary类型的方法

首先介绍：1.传递数组，数组中是NSString类型的方法；

//初始化数组中是NSString类型的标签视图
-(instancetype)initWithFrame:(CGRect)frame textArray:(NSArray *)aArray textFont:(UIFont *)aFont
{
    self = [super initWithFrame:frame];
    if (self)
    {
        //首先获取宽、高，确定显示的位置
        CGFloat widthF = frame.size.width;
        //CGFloat heightF = frame.size.height;
        
        //然后创建标签视图，注意:这个方法传过来的数组中就是NSString类型,可以直接显示
        CGFloat labelWidthF = 0.0f;
        CGFloat labelHeightF = 0.0f;
        for (int i = 0; i < aArray.count; i++)
        {
            NSString *str = aArray[i];
            CGSize strSize = [self sizeWithFont:str font:aFont maxSize:CGSizeMake(MAXFLOAT, MAXFLOAT)];
            
            //labelWidthF=labelWidthF+strSize.width+10;
            //判断宽、高
            if (widthF < labelWidthF+strSize.width+10)
            {
                labelWidthF=0.0f;
                labelHeightF = labelHeightF+strSize.height+10;
            }
            
            UILabel *labelL = [[UILabel alloc] initWithFrame:CGRectMake(labelWidthF, labelHeightF, strSize.width+10, strSize.height+10)];
            labelL.text = str;
            labelL.textAlignment = NSTextAlignmentCenter;
            labelL.backgroundColor = [UIColor lightGrayColor];
            labelL.font = aFont;
            [self addSubview:labelL];
            
            labelWidthF=labelWidthF+strSize.width+10;
        }
    }
    return self;
}

记住一定要计算控件的宽高，否则容易无法多行显示

第二种方式：2.传递数组，数组中是NSDictionary类型的方法

//初始化数组中是NSDictionary类型的标签视图
-(instancetype)initWithFrame:(CGRect)frame textArray:(NSArray *)aArray keyStr:(NSString *)aKeyStr textFont:(UIFont *)aFont
{
    self = [super initWithFrame:frame];
    if (self)
    {
        //首先获取宽、高，确定显示的位置
        CGFloat widthF = frame.size.width;
        //CGFloat heightF = frame.size.height;
        
        //然后创建标签视图，注意:这个方法传过来的数组中就是NSString类型,可以直接显示
        CGFloat labelWidthF = 0.0f;
        CGFloat labelHeightF = 0.0f;
        for (int i = 0; i < aArray.count; i++)
        {
            NSDictionary *dic = aArray[i];
            NSString *str = dic[aKeyStr];
            CGSize strSize = [self sizeWithFont:str font:aFont maxSize:CGSizeMake(MAXFLOAT, MAXFLOAT)];
            
            //labelWidthF=labelWidthF+strSize.width+10;
            //判断宽、高
            if (widthF < labelWidthF+strSize.width+10)
            {
                labelWidthF=0.0f;
                labelHeightF = labelHeightF+strSize.height+10;
            }
            
            UILabel *labelL = [[UILabel alloc] initWithFrame:CGRectMake(labelWidthF, labelHeightF, strSize.width+10, strSize.height+10)];
            labelL.text = str;
            labelL.textAlignment = NSTextAlignmentCenter;
            labelL.backgroundColor = [UIColor lightGrayColor];
            labelL.font = aFont;
            [self addSubview:labelL];
            
            labelWidthF=labelWidthF+strSize.width+10;
        }
    }
    return self;
}

方法设定完成，进行调用

NSArray *arr1 = @[@"哈哈哈",@"呵呵",@"嘻嘻嘻嘻",@"嘿",@"么么么么么么",@"面朝大海，春暖花开",@"好好学习，天天向上，加油！"];
    BHMoreLabelView *bhMoreLV1 = [[BHMoreLabelView alloc] initWithFrame:CGRectMake(0, 170, self.view.frame.size.width, 100) textArray:arr1 textFont:[UIFont systemFontOfSize:15]];
    //bhMoreLV1.backgroundColor = [UIColor cyanColor];
    [self.view addSubview:bhMoreLV1];
    
    NSArray *arr2 = @[@{@"name":@"哈哈哈"},@{@"name":@"呵呵"},@{@"name":@"嘻嘻嘻嘻"},@{@"name":@"嘿"},@{@"name":@"么么么么么么"},@{@"name":@"面朝大海，春暖花开"}];
    BHMoreLabelView *bhMoreLV2 = [[BHMoreLabelView alloc] initWithFrame:CGRectMake(0, 300, self.view.frame.size.width, 100) textArray:arr2 keyStr:@"name" textFont:[UIFont systemFontOfSize:15]];
    //bhMoreLV2.backgroundColor = [UIColor redColor];
    [self.view addSubview:bhMoreLV2];

效果展示图：