Untitled.gif
可根据字符长度判断是否换行
可点击添加一个标签，长按修改标签
//
// KKLabelView.h
// KkLenovoCamera-iOS
//
// Created by kk on 2018/2/2.
// Copyright © 2018年 fx. All rights reserved.
//
#import <UIKit/UIKit.h>
typedef void (^ReturnValueBlock)(int code, id returnValue);
@interface KKLabelView : UIView
//所有标签的数量
@property (nonatomic, assign) NSInteger allLabelCount;
//初始化标签
- (instancetype)initWithFrame:(CGRect)frame
headTitle:(NSString *)headTitle
withRootLabelAry:(NSArray *)rootLabelAry
rootIdAry:(NSArray *)rootIdAry
needAddBtn:(BOOL)needAddBtn
touchBtn:(ReturnValueBlock)touchBlock;
//布局最后一行的lable
//titleAry：需要布局的标签名称；idAry：需要布局的标签Id；两个数组要一一对应
//isHeadAnd：是否为手动添加；selectId：长按选择的id
- (CGFloat)layoutLastLabelAry:(NSArray *)titleAry
withLabelId:(NSArray *)idAry
isHeadAnd:(BOOL)isHeadAnd
selectId:(NSString *)selectId;
//全部重新布局-(修改名称的时候调用)
- (CGFloat)layoutAllLabelModifyTitle:(NSString *)modifyTitle modifyId:(NSString *)modifyId;
@end
//
// KKLabelView.m
// KkLenovoCamera-iOS
//
// Created by kk on 2018/2/2.
// Copyright © 2018年 fx. All rights reserved.
//
#import "KKLabelView.h"
#import "UIViewExt.h"
#import "NSString+Extension.h"
#import "UIView+IBExtension.h"
#import "UIButton+Extension.h"
#import "UIColor+Extension.h"
@interface KKLabelView()
@property (nonatomic, strong) UILabel *titleKKLabel;
@property (nonatomic, assign) CGPoint lastLabelPoint; //最后一个label的位置+headLabel的高度
@property (nonatomic, assign) CGFloat rowSpacing; //行间距
@property (nonatomic, assign) CGFloat itemSpacing; //item间距
@property (nonatomic, assign) CGFloat itemHeight; //item的行高
@property (nonatomic, strong) NSMutableArray *allTitleAry; //所有title
@property (nonatomic, strong) NSMutableArray *allIdAry; //所有id
@property (nonatomic, strong) NSMutableArray *lastRowItemsAry; //最后一行的item
@property (nonatomic, assign) BOOL needAddBtn;
@property (nonatomic, copy) ReturnValueBlock selectBlock;
@end
@implementation KKLabelView
- (instancetype)initWithFrame:(CGRect)frame
headTitle:(NSString *)headTitle
withRootLabelAry:(NSArray *)rootLabelAry
rootIdAry:(NSArray *)rootIdAry
needAddBtn:(BOOL)needAddBtn
touchBtn:(ReturnValueBlock)touchBlock {
if (self = [super initWithFrame:frame]) {
_selectBlock = touchBlock;
_needAddBtn = needAddBtn;
_lastLabelPoint = CGPointMake(0, 0);
_rowSpacing = 10;
_itemSpacing = 15;
_itemHeight = 35;
_lastRowItemsAry = [NSMutableArray arrayWithCapacity:3];
_allTitleAry = [NSMutableArray arrayWithCapacity:3];
_allIdAry = [NSMutableArray arrayWithCapacity:3];
_allLabelCount = 0;
//布局标题栏
CGSize size = [headTitle kk_calculateStringSize:13
withLimitSize:CGSizeMake(frame.size.width, 60)];
CGRect rect = CGRectMake(0, 0, frame.size.width, size.height);
UILabel *label = [[UILabel alloc] initWithFrame:rect];
label.font = [UIFont systemFontOfSize:13];
label.textColor = [UIColor lightGrayColor];
label.text = headTitle;
label.numberOfLines = 0;
[self addSubview:label];
_titleKKLabel = label;
_lastLabelPoint.y = label.bottom+10;
CGFloat viewHeight = _lastLabelPoint.y;
//第一次布局需要自动补上最后一个+按钮
if (needAddBtn) {
NSMutableArray *titleAry = [NSMutableArray arrayWithArray:rootLabelAry];
[titleAry addObject:@"＋"];
NSMutableArray *idAry = [NSMutableArray arrayWithArray:rootIdAry];
[idAry addObject:@"＋"];
viewHeight = [self layoutLastLabelAry:titleAry withLabelId:idAry isHeadAnd:NO selectId:nil];
}else {
viewHeight = [self layoutLastLabelAry:rootLabelAry withLabelId:rootIdAry isHeadAnd:NO selectId:nil];
}
//自动调整self的高度
rect = frame;
rect.size.height = viewHeight;
self.frame = rect;
}
return self;
}
//布局最后一行的lable
//titleAry：需要布局的标签名称；idAry：需要布局的标签Id；两个数组要一一对应
- (CGFloat)layoutLastLabelAry:(NSArray *)titleAry
withLabelId:(NSArray *)idAry
isHeadAnd:(BOOL)isHeadAnd
selectId:(NSString *)selectId {
if (isHeadAnd) selectId = @"";
//先删除最后一行的label
NSMutableArray *newLastAry = [NSMutableArray arrayWithCapacity:3];
NSMutableArray *newIdAry = [NSMutableArray arrayWithCapacity:3];
for (UIButton *button in _lastRowItemsAry) {
[newLastAry addObject:button.titleLabel.text];
[newIdAry addObject:button.specialAttribute];
[button removeFromSuperview];
[_allTitleAry removeObject:button.titleLabel.text];
[_allIdAry removeObject:button.specialAttribute];
_allLabelCount--;
}
//先清空最后一行
[_lastRowItemsAry removeAllObjects];
if (newLastAry.count == 0) { //第一次布局
[newLastAry addObjectsFromArray:titleAry];
[newIdAry addObjectsFromArray:idAry];
}else if (_needAddBtn) { //新的插入到最后一个之前(最后一个一直为+)
NSRange range = NSMakeRange(newLastAry.count-1, titleAry.count);
NSIndexSet *set = [NSIndexSet indexSetWithIndexesInRange:range];
[newLastAry insertObjects:titleAry atIndexes:set];
[newIdAry insertObjects:idAry atIndexes:set];
}else {
[newLastAry addObjectsFromArray:titleAry];
[newIdAry addObjectsFromArray:idAry];
}
//重新布局最后一行的label
int i=0;
CGRect rect;
CGFloat upItem_x=0; //最后一个item的x
for (NSString *str in newLastAry) {
//计算字符串的width
CGSize size;
if (_needAddBtn && i==newLastAry.count-1) { //最后一个为+
//这里限定了+的宽度，会让计算是否到下一行出现偏差
//可以设置item的最小宽度= +的宽度，这样计算就完全一样了
size = CGSizeMake(_itemHeight-10, _itemHeight);
}else {
size = [str kk_calculateStringSize:14
withLimitSize:CGSizeMake(self.width-10, _itemHeight)];
//这里可以设置size计算后的最小width
size.width = size.width<_itemHeight-10?_itemHeight-10:size.width;
}
CGFloat itemWidth = size.width+10;
//判断是否超出边界，需要换行
if (itemWidth+upItem_x>self.width) {
_lastLabelPoint.y += _rowSpacing+_itemHeight;
upItem_x = 0;
[_lastRowItemsAry removeAllObjects];
}
rect = CGRectMake(upItem_x, _lastLabelPoint.y, itemWidth, _itemHeight);
upItem_x += (itemWidth+_itemSpacing);
UIButton *btn = [self creatButtonWithFrame:rect
title:str
isAddBtn:(i==newLastAry.count-1 && _needAddBtn)
addLongAction:(i!=newLastAry.count-1 && _needAddBtn)];
//设置btn的id
btn.specialAttribute = newIdAry[i];
//记录最后一行的label
[_lastRowItemsAry addObject:btn];
//所有的都保存(重复的id剔除)
if (![_allIdAry containsObject:btn.specialAttribute]) {
[_allTitleAry addObject:btn.titleLabel.text];
[_allIdAry addObject:btn.specialAttribute];
}
_allLabelCount++;
//倒数第二个为新增的标签，默认选中；长按编辑的默认选中
if (i==newLastAry.count-2 && isHeadAnd) [self labelAction:btn];
else if ([btn.specialAttribute isEqualToString:selectId]) [self labelAction:btn];
i++;
}
return _lastLabelPoint.y+_itemHeight;
}
//全部重新布局
- (CGFloat)layoutAllLabelModifyTitle:(NSString *)modifyTitle modifyId:(NSString *)modifyId {
NSUInteger index = [_allIdAry indexOfObject:modifyId];
if (index==NSNotFound) return self.height;
//初始参数
_lastLabelPoint.y = _titleKKLabel.bottom+10;
[_lastRowItemsAry removeAllObjects];
_allLabelCount = 0;
for (id obj in self.subviews) {
if ([obj isKindOfClass:[UIButton class]])
[obj removeFromSuperview];
}
[_allTitleAry replaceObjectAtIndex:index withObject:modifyTitle];
CGFloat viewHeight = [self layoutLastLabelAry:_allTitleAry withLabelId:_allIdAry isHeadAnd:NO selectId:modifyId];
return viewHeight;
}
//创建一个label
- (UIButton *)creatButtonWithFrame:(CGRect)frame
title:(NSString *)title
isAddBtn:(BOOL)isAddBtn
addLongAction:(BOOL)addLongAction {
UIButton *btn = [UIButton buttonWithType:UIButtonTypeCustom];
btn.frame = frame;
btn.titleLabel.font = [UIFont systemFontOfSize:isAddBtn?20:14];
[btn setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
[btn setTitleColor:[UIColor whiteColor] forState:UIControlStateSelected];
[btn setBackgroundImage:[[UIColor blueColor] kk_creatImageWithSize:btn.size cornerRadius:0]
forState:UIControlStateSelected];
[btn setTitle:title forState:UIControlStateNormal];
btn.layer.borderColor = [UIColor blackColor].CGColor;
btn.layer.borderWidth = (1/[UIScreen mainScreen].scale);
[btn addTarget:self action:@selector(labelAction:) forControlEvents:UIControlEventTouchUpInside];
[self addSubview:btn];
if (addLongAction) {
UILongPressGestureRecognizer *longPressGestureRecognizer = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(longPGRAction:)];
longPressGestureRecognizer.minimumPressDuration = 1.5;
[btn addGestureRecognizer:longPressGestureRecognizer];
}
return btn;
}
- (void)labelAction:(UIButton *)btn {
NSLog(@"btn.title===%@, specialAttribute===%@", btn.titleLabel.text, btn.specialAttribute);
if ([btn.specialAttribute isEqualToString:@"＋"]) {
_selectBlock (0, btn);
}else {
_selectBlock (1, btn);
}
}
- (void)longPGRAction:(UILongPressGestureRecognizer *)longPressGestureRecognizer {
UIButton *btn = (UIButton *)longPressGestureRecognizer.view;
_selectBlock (2, btn);
}
/*
// Only override drawRect: if you perform custom drawing.
// An empty implementation adversely affects performance during animation.
- (void)drawRect:(CGRect)rect {
// Drawing code
}
*/
@end
网友评论