iOS 一个标签自动布局的view

//将标签数组根据type以及其他参数进行分组装入数组
- (void)disposeTags:(NSArray *)aryName aryCount:(NSArray *)aryCount{
NSMutableArray *tags = [NSMutableArray new];//纵向数组
NSMutableArray *subTags = [NSMutableArray new];//横向数组

float originX = _tagOriginX;
for (NSString *tagTitle in aryName) {
NSUInteger index = [aryName indexOfObject:tagTitle];

//计算每个tag的宽度
CGSize contentSize = [tagTitle fdd_sizeWithFont:[UIFont systemFontOfSize:14] constrainedToSize:CGSizeMake(self.frame.size.width-_tagOriginX*2, MAXFLOAT)];

NSMutableDictionary *dict = [NSMutableDictionary new];
dict[@"tagTitle"] = tagTitle;//标签标题
dict[@"tagCount"] =aryCount[index];
dict[@"viewWith"] = [NSString stringWithFormat:@"%f",contentSize.width+_tagSpace+30];//标签的宽度

if (index == 0) {
dict[@"originX"] = [NSString stringWithFormat:@"%f",originX];//标签的X坐标
[subTags addObject:dict];
} else {
if (originX + contentSize.width > self.frame.size.width-_tagOriginX*2) {
//当前标签的X坐标+当前标签的长度>屏幕的横向总长度则换行
[tags addObject:subTags];
//换行标签的起点坐标初始化
originX = _tagOriginX;
dict[@"originX"] = [NSString stringWithFormat:@"%f",originX];//标签的X坐标
subTags = [NSMutableArray new];
[subTags addObject:dict];
} else {
//如果没有超过屏幕则继续加在前一个数组里
dict[@"originX"] = [NSString stringWithFormat:@"%f",originX];//标签的X坐标
[subTags addObject:dict];
}
}

if (index +1 == aryName.count) {
//最后一个标签加完将横向数组加到纵向数组中
[tags addObject:subTags];
disposeAry = tags;
}

//标签的X坐标每次都是前一个标签的宽度+标签左右空隙+标签距下个标签的距离
originX += contentSize.width+_tagHorizontalSpace+_tagSpace+30;
}
}

#pragma mark - 扩展方法

字符串长度计算完成了，下面就可以进行所有字符串排列的高度了。其实这个蛮简单的 ，统计数组有多少个元素就代表标签排布有多少行。

-(void)setTagAryName:(NSArray *)tagAryName aryCount:(NSArray *)aryCount delegate:(id)delegate{
_tagDelegate=delegate;
[self disposeTags:tagAryName aryCount:aryCount];
UILabel *label=[[UILabel alloc]initWithFrame:CGRectMake(_tagOriginX, 0, 200, 30)];
label.text=@"事件类别统计：";
label.textColor=_titleColor;
label.textAlignment=NSTextAlignmentLeft;
label.adjustsFontSizeToFitWidth=YES;
[self addSubview:label];
//遍历标签数组,将标签显示在界面上,并给每个标签打上tag加以区分
for (NSArray *iTags in disposeAry) {
NSUInteger i = [disposeAry indexOfObject:iTags];

for (NSDictionary *tagDic in iTags) {
NSUInteger j = [iTags indexOfObject:tagDic];

NSString *tagTitle = tagDic[@"tagTitle"];
float originX = [tagDic[@"originX"] floatValue];
float viewWith = [tagDic[@"viewWith"] floatValue];
NSString *count = tagDic[@"tagCount"];
UIView *NCView=[[UIView alloc]initWithFrame:CGRectMake(originX, _tagOriginY+i*(_tagHeight+_tagVerticalSpace), viewWith, _tagHeight)];
[self addSubview:NCView];
UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
button.frame=CGRectMake(0, 0, viewWith-30, _tagHeight);
button.layer.borderColor = _borderColor.CGColor;
button.layer.borderWidth = _borderWidth;
button.layer.masksToBounds = _masksToBounds;
button.layer.cornerRadius = _cornerRadius;
button.titleLabel.font = [UIFont systemFontOfSize:_titleSize];
[button setTitle:tagTitle forState:UIControlStateNormal];
[button setTitleColor:_titleColor forState:UIControlStateNormal];
[button setBackgroundImage:_normalBackgroundImage forState:UIControlStateNormal];
[button setBackgroundImage:_highlightedBackgroundImage forState:UIControlStateHighlighted];
button.tag = i*iTags.count+j;
[button addTarget:self action:@selector(buttonAction:) forControlEvents:UIControlEventTouchUpInside];
UILabel *label=[[UILabel alloc]initWithFrame:CGRectMake(viewWith-30, 0, 30, _tagHeight)];
label.text=[NSString stringWithFormat:@"X%@",count];
label.textAlignment=NSTextAlignmentCenter;
label.adjustsFontSizeToFitWidth=YES;
label.textColor=_titleColor;
[NCView addSubview:button];
[NCView addSubview:label];
}
}
self.countLabel=[[UILabel alloc]initWithFrame:CGRectMake(_tagOriginX, [self getDisposeTagsViewHeight:disposeAry], 100, 30)];
self.countLabel.text=[NSString stringWithFormat:@"总计：%ld次",_times];
self.countLabel.textAlignment=NSTextAlignmentLeft;
self.countLabel.adjustsFontSizeToFitWidth=YES;
self.countLabel.textColor=_titleColor;
[self addSubview:self.countLabel];
if (disposeAry.count > 0) {
float contentSizeHeight = _tagOriginY+disposeAry.count*(_tagHeight+_tagVerticalSpace);
self.contentSize = CGSizeMake(self.frame.size.width,contentSizeHeight);
}

if (self.frame.size.height <= 0) {
self.frame = CGRectMake(CGRectGetMinX([self frame]), CGRectGetMinY([self frame]), CGRectGetWidth([self frame]), [self getDisposeTagsViewHeight:disposeAry]+30);
}


}

//计算出全部展示的高度,让maxHeight等于计算出的高度即可,初始化不需要设置高度
NSArray *tagAryCount=@[@"10",@"8",@"7",@"9",@"2",@"4",@"5",@"3",@"4"];
NSArray* tagAryName = @[@"黑色玫瑰",@"比尔沃吉特",@"钢铁烈阳",@"德玛西亚",@"祖安",@"巨神峰",@"雷瑟守备祖安",@"诺克萨斯暗影岛",@"弗雷尔卓德"];
ZHLbView * tagsView = [[ZHLbView alloc] initWithFrame:CGRectMake(0, 200, self.view.frame.size.width, 0)];
[tagsView setTagAryName:tagAryName aryCount:tagAryCount delegate:self];
[self.view addSubview:tagsView];