京东选取地址小控件

这东西实现起来并不是很难，就是相对来说啰嗦一点，好了废话不多说直接上效果

4258779-426154faea9d6f0b.png

4258779-6d2b4a68d20267a3.png

具体效果可以参考京东选取地址的效果哦，由于我不经常发表简书，就直接上图片了，没搞gif。

代码思路：

1.视图结构：标题scrollview+内容scrollview（n个tableview展示数据）

2.主要逻辑：上下scrollview的联动，点击新数据时生产tableview（有时会重用）+titleLabel，内容偏移的处理

哦了，下面直接上代码了，不瞎bb,如果有任何bug和优化的可以@我哦，多谢了，喜欢的话可以点点赞哦

//
//  SelectAddressView.h
//
//  Created by yaoguanglin on 2017/4/14.
//

#import <UIKit/UIKit.h>

@interface SelectAddressView : UIView

-(instancetype)init:(NSDictionary *)inPutInfoDic outPutInfoBlock:(void(^)(NSDictionary *infoDic))outPutInfoBlock;

@end

//
//  SelectAddressView.m
//
//  Created by yaoguanglin on 2017/4/14.
//

#import "SelectAddressView.h"
#import "DigMachineFinanceMacro.h"
#import "CAttention.h"
#import "Masonry.h"

@interface SelectAddressView ()<UITableViewDelegate,UITableViewDataSource>
@property(nonatomic,strong)void(^outPutInfoBlock)(NSDictionary *infoDic);
@property(nonatomic,strong)UIScrollView *selectAddressScrollView;
@property(nonatomic,strong)UIScrollView *titlesScrollView;
@property(nonatomic,strong)UIView *moveLineView;
@property(nonatomic,strong)NSMutableDictionary *headTitleMDic;
@property(nonatomic,assign)NSInteger startTag;
@property(nonatomic,strong)NSMutableDictionary *selectIndexPathMDic;
@property(nonatomic,strong)NSMutableDictionary *addressDataMDic;
@end

@implementation SelectAddressView
-(NSMutableDictionary *)headTitleMDic {
    if(!_headTitleMDic) {
        _headTitleMDic=[NSMutableDictionary dictionary];
    }
    return _headTitleMDic;
}

-(NSMutableDictionary *)addressDataMDic {
    if(!_addressDataMDic) {
        _addressDataMDic=[NSMutableDictionary dictionary];
    }
    return _addressDataMDic;
}

-(NSMutableDictionary *)selectIndexPathMDic {
    if(!_selectIndexPathMDic) {
        _selectIndexPathMDic=[NSMutableDictionary dictionary];
    }
    return _selectIndexPathMDic;
}

-(UIView *)moveLineView {
    if(!_moveLineView) {
        _moveLineView=[[UIView alloc]initWithFrame:CGRectZero];
        _moveLineView.backgroundColor=[UIColor redColor];
    }
    return _moveLineView;
}

-(UIScrollView *)titlesScrollView {
    if(!_titlesScrollView) {
        _titlesScrollView=[[UIScrollView alloc]initWithFrame:CGRectMake(0, 30, SCREEN_WIDTH, 60-30)];
        _titlesScrollView.showsHorizontalScrollIndicator=NO;
        _titlesScrollView.showsVerticalScrollIndicator=NO;
        _titlesScrollView.backgroundColor=[UIColor clearColor];
        _titlesScrollView.contentSize=CGSizeMake(0, 60-30);
    }
    return _titlesScrollView;
}

-(UIScrollView *)selectAddressScrollView {
    if(!_selectAddressScrollView) {
        _selectAddressScrollView=[[UIScrollView alloc]initWithFrame:CGRectMake(0, 60, SCREEN_WIDTH, self.frame.size.height-60)];
        _selectAddressScrollView.pagingEnabled=YES;
        _selectAddressScrollView.showsHorizontalScrollIndicator=NO;
        _selectAddressScrollView.showsVerticalScrollIndicator=NO;
        _selectAddressScrollView.delegate=self;
        _selectAddressScrollView.tag=500;
    }
    return _selectAddressScrollView;
}

-(UILabel *)titleLabel:(NSInteger)tag text:(NSString *)text{
    UILabel *label=[[UILabel alloc]init];
    label.textColor=[UIColor redColor];
    label.tag=tag;
    label.preferredMaxLayoutWidth=SCREEN_WIDTH/3;
    label.text=text;
    label.font=[UIFont systemFontOfSize:13];
    label.textAlignment=NSTextAlignmentCenter;
    label.userInteractionEnabled=YES;
    [label addGestureRecognizer:[[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(titleLabelAction:)]];
    return label;
}

-(UITableView *)selectAddressTableView:(CGRect)frame tag:(NSInteger)tag {
    UITableView *selectAddressTableView=[[UITableView alloc]initWithFrame:frame style:UITableViewStylePlain];
    selectAddressTableView.separatorStyle=UITableViewCellSeparatorStyleNone;
    selectAddressTableView.tag=tag;
    selectAddressTableView.delegate=self;
    selectAddressTableView.dataSource=self;
    [selectAddressTableView registerClass:[UITableViewCell class] forCellReuseIdentifier:[NSString stringWithFormat:@"selectAddressTableViewCellReuseID%zd",tag]];
    return selectAddressTableView;
}

-(instancetype)init:(NSDictionary *)inPutInfoDic outPutInfoBlock:(void(^)(NSDictionary *infoDic))outPutInfoBlock{
    if(self=[super initWithFrame:CGRectMake(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT-300)]) {
        self.backgroundColor=[UIColor whiteColor];
        self.outPutInfoBlock=outPutInfoBlock;
        self.startTag=300;
        [self addHeaderView];
        [self addSubview:self.selectAddressScrollView];
        [self firstAddTableViews];
    }
    return self;
}

- (void)addHeaderView {
    UIView *headerView=[[UIView alloc]initWithFrame:CGRectMake(0, 0, SCREEN_WIDTH,60)];
    [self addSubview:headerView];
    headerView.backgroundColor=[UIColor whiteColor];
    UILabel *titleLabel=[[UILabel alloc]init];
    titleLabel.textColor=HEXVALEUCOLOR(0x666666, 1.0);
    titleLabel.text=@"所在地区";
    titleLabel.font=[UIFont systemFontOfSize:15];
    [headerView addSubview:titleLabel];
    [titleLabel mas_makeConstraints:^(MASConstraintMaker *make) {
        make.top.mas_offset(5);
        make.centerX.mas_equalTo(headerView);
    }];
    [headerView addSubview:self.titlesScrollView];
    UIView *lineView=[[UIView alloc]init];
    lineView.backgroundColor=HEXVALEUCOLOR(0xcccccc, 1.0);
    [headerView addSubview:lineView];
    [lineView mas_makeConstraints:^(MASConstraintMaker *make) {
        make.left.mas_offset(0);
        make.bottom.mas_offset(0);
        make.right.mas_offset(0);
        make.height.mas_equalTo(0.5);
    }];
}

//首次创建时增加tableview
- (void)firstAddTableViews {
    [self requestData:nil tableViewTag:self.startTag];
}
//刷新tableview和标题栏
- (void)refreshSubviews:(NSInteger)tag infoAry:(NSArray*)infoAry{
    for(NSInteger i=(tag-self.startTag);i<(self.selectAddressScrollView.contentSize.width/SCREEN_WIDTH);i++) {
        UITableView *tableView=[self.selectAddressScrollView viewWithTag:(self.startTag+i)];
        [self.addressDataMDic removeObjectForKey:@(self.startTag+i)];
        [self removeHeadTitleLabel:@(self.startTag+i)];
        [self.selectIndexPathMDic removeObjectForKey:@(self.startTag+i)];
        [tableView reloadData];
    }
    [self setHeadTitleLabel:@(tag) value:@"请选择"];
    [self.addressDataMDic setObject:infoAry forKey:@(tag)];
    self.selectAddressScrollView.contentSize=CGSizeMake(SCREEN_WIDTH*(tag-self.startTag+1), self.selectAddressScrollView.frame.size.height);
    if([self.selectAddressScrollView viewWithTag:tag]) {
         UITableView *tableView=[self.selectAddressScrollView viewWithTag:tag];
        [tableView reloadData];
    }else {
        [self.selectAddressScrollView addSubview:[self selectAddressTableView:CGRectMake(SCREEN_WIDTH*(tag-self.startTag), 0, SCREEN_WIDTH, self.selectAddressScrollView.frame.size.height) tag:tag]];
    }
    [self.selectAddressScrollView setContentOffset:CGPointMake(SCREEN_WIDTH*(tag-self.startTag), 0) animated:YES];
}

- (void)removeHeadTitleLabel:(id)key {
    [self.headTitleMDic removeObjectForKey:key];
    UILabel *titleLabel=[self.titlesScrollView viewWithTag:[key integerValue]];
    self.titlesScrollView.contentSize=CGSizeMake(self.titlesScrollView.contentSize.width-titleLabel.frame.size.width, self.titlesScrollView.contentSize.height);
    [titleLabel removeFromSuperview];
}

- (void)setHeadTitleLabel:(id)key value:(NSString *)value{
    if([self.headTitleMDic.allKeys containsObject:key]) { //修改
        [self.headTitleMDic setObject:value forKey:key];
        UILabel *titleLabel=[self.titlesScrollView viewWithTag:[key integerValue]];
        titleLabel.text=value;
        titleLabel.textColor=HEXVALEUCOLOR(0x666666, 1.0);
        self.titlesScrollView.contentSize=CGSizeMake(self.titlesScrollView.contentSize.width-titleLabel.frame.size.width, self.titlesScrollView.contentSize.height);
        titleLabel.frame=CGRectMake(titleLabel.frame.origin.x, 0, titleLabel.intrinsicContentSize.width+20, self.titlesScrollView.contentSize.height);
        self.titlesScrollView.contentSize=CGSizeMake(self.titlesScrollView.contentSize.width+titleLabel.intrinsicContentSize.width+20, self.titlesScrollView.contentSize.height);
        [self.titlesScrollView addSubview:titleLabel];
        [self.titlesScrollView addSubview:self.moveLineView];
        self.moveLineView.frame=CGRectMake(titleLabel.frame.origin.x+10, self.titlesScrollView.frame.size.height-2, titleLabel.intrinsicContentSize.width, 2);
        [self moveTitleScrollView:titleLabel.frame];
    }else { //增加
        [self.headTitleMDic setObject:value forKey:key];
        UILabel *titleLabel=[self titleLabel:[key integerValue] text:value];
        titleLabel.frame=CGRectMake(self.titlesScrollView.contentSize.width, 0, titleLabel.intrinsicContentSize.width+20, self.titlesScrollView.contentSize.height);
        self.titlesScrollView.contentSize=CGSizeMake(self.titlesScrollView.contentSize.width+titleLabel.intrinsicContentSize.width+20, self.titlesScrollView.contentSize.height);
        [self.titlesScrollView addSubview:titleLabel];
        [self.titlesScrollView addSubview:self.moveLineView];
        [UIView animateWithDuration:.25 animations:^{
            self.moveLineView.frame=CGRectMake(titleLabel.frame.origin.x+10, self.titlesScrollView.frame.size.height-2, titleLabel.intrinsicContentSize.width, 2);
        }];
        [self moveTitleScrollView:titleLabel.frame];
    }
}

#pragma mark - UITableViewDelegate,UITableViewDataSource
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
    NSArray *ary = self.addressDataMDic[@(tableView.tag)];
    return ary.count;
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:[NSString stringWithFormat:@"selectAddressTableViewCellReuseID%zd",tableView.tag] forIndexPath:indexPath];
    cell.selectionStyle=UITableViewCellSelectionStyleNone;
    cell.textLabel.textColor=HEXVALEUCOLOR(0x454545, 1.0);
    cell.textLabel.font=[UIFont systemFontOfSize:14];
    if(self.selectIndexPathMDic[@(tableView.tag)]) {
        NSIndexPath *selectIndexPath=self.selectIndexPathMDic[@(tableView.tag)];
        if(indexPath.row==selectIndexPath.row) {
            cell.textLabel.textColor=[UIColor redColor];
        }
    }
    NSArray *ary = self.addressDataMDic[@(tableView.tag)];
    cell.textLabel.text=ary[indexPath.row][@"AREANAME"];
    return cell;
}

-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
    NSIndexPath *selectIndexPath=self.selectIndexPathMDic[@(tableView.tag)];
    //点击未点击过的cell刷新数据
    if(!selectIndexPath||(selectIndexPath.row!=indexPath.row)) {
        NSArray *ary = self.addressDataMDic[@(tableView.tag)];
        [self setHeadTitleLabel:@(tableView.tag) value:ary[indexPath.row][@"AREANAME"]];
        [self.selectIndexPathMDic setObject:indexPath forKey:@(tableView.tag)];
        [tableView reloadData];
        [self requestData:nil tableViewTag:(tableView.tag+1)];
        return;
    }
    //点击点击过的cell不用刷新数据
    [self.selectAddressScrollView setContentOffset:CGPointMake(SCREEN_WIDTH*(tableView.tag-self.startTag+1), 0) animated:YES];
    UILabel *titleLabel=[self.titlesScrollView viewWithTag:(tableView.tag+1)];
    [UIView animateWithDuration:.25 animations:^{
        self.moveLineView.frame=CGRectMake(titleLabel.frame.origin.x+10, self.titlesScrollView.frame.size.height-2, titleLabel.intrinsicContentSize.width, 2);
    }];
    [self moveTitleScrollView:titleLabel.frame];

}
#pragma mark - scrollViewDelegate
-(void)scrollViewWillEndDragging:(UIScrollView *)scrollView withVelocity:(CGPoint)velocity targetContentOffset:(inout CGPoint *)targetContentOffset {
    if(500==scrollView.tag) {
        UILabel *titleLabel=[self.titlesScrollView viewWithTag:((targetContentOffset->x)/SCREEN_WIDTH+self.startTag)];
        [self moveTitleScrollView:titleLabel.frame];
        [UIView animateWithDuration:.25 animations:^{
            self.moveLineView.frame=CGRectMake(titleLabel.frame.origin.x+10, self.titlesScrollView.frame.size.height-2, titleLabel.intrinsicContentSize.width, 2);
        }];
    }
}
 //处理标题视图滚动到可见
- (void)moveTitleScrollView:(CGRect)titleLabelFrame {
    if(CGRectGetMaxX(titleLabelFrame)>(self.titlesScrollView.contentOffset.x+SCREEN_WIDTH)) {
        [self.titlesScrollView setContentOffset:CGPointMake(CGRectGetMaxX(titleLabelFrame)-SCREEN_WIDTH, 0) animated:YES];
        return;
    }else if(CGRectGetMinX(titleLabelFrame)<self.titlesScrollView.contentOffset.x) {
        [self.titlesScrollView setContentOffset:CGPointMake(CGRectGetMinX(titleLabelFrame), 0) animated:YES];
    }
}

#pragma mark -Action
- (void)titleLabelAction:(UITapGestureRecognizer*)tap {
    UILabel *titleLabel=(UILabel *)tap.view;
    [UIView animateWithDuration:.25 animations:^{
        self.moveLineView.frame=CGRectMake(titleLabel.frame.origin.x+10, self.titlesScrollView.frame.size.height-2, titleLabel.intrinsicContentSize.width, 2);
    }];
    [self.selectAddressScrollView setContentOffset:CGPointMake(SCREEN_WIDTH*(titleLabel.tag-self.startTag), 0) animated:YES];
}
#pragma mark - 请求数据
- (void)requestData:(NSDictionary *)paramDic tableViewTag:(NSInteger)tag{
    [self refreshSubviews:tag infoAry:@[
                                        @{
                                            @"AREACODE": @"110100",
                                            @"AREANAME": @"北京市XX"
                                            },
                                        @{
                                            @"AREACODE": @"120100",
                                            @"AREANAME": @"上"
                                            },
                                        @{
                                            @"AREACODE": @"130100",
                                            @"AREANAME": @"南京市ff"
                                            }]];
}

@end

最后编辑于：2017.12.06 18:53:04

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京东选取地址小控件

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