如何在类别中创建 UITableViewCell 明智地排列 JSON 对象

Posted 2023-03-04

【中文标题】如何在类别中创建 UITableViewCell 明智地排列 JSON 对象

【英文标题】：How to create UITableViewCell in category wise arrange JSON objects

【发布时间】：2016-07-07 05:23:16

【问题描述】：

I want to like this, Please have a look

我有 UITableViewCell 并且我创建了按类别排列的 JSON 数据。我获取了我们所有的价值，但是如何在特定数组中排列类别，例如在两个不同数组下的“business_details”中的第一个类别“汽车”。我想在 UITableViewCell 中安排类别。怎么可能，请帮忙。谢谢你

JSON

    "status": [
    
      "business_category_name": "Automotive",
      "business_details": [
        
          "img_url": "http:\/\/edutimeapp.com\/toshow\/chamber-of-commerc\/member-logo\/1467813900-263.jpg",
          "name": "ssmpl",
          "des": "SIXTH SENSE MARKETING PVT LTD",
          "address": "m2",
          "email": "[e-mail]",
          "phone": "09999999999",
          "member_since": "2016-07-06",
          "img_company": "http:\/\/edutimeapp.com\/toshow\/chamber-of-commerc\/member-logo\/1467813900-263.jpg",
          "website": "www.sixthsenseit.com",
          "city": "indore",
          "state": "mp",
          "zip": "452001"
        ,
        
          "img_url": "http:\/\/edutimeapp.com\/toshow\/chamber-of-commerc\/member-logo\/1467814186-DSC_5854.jpg11.jpg",
          "name": "h",
          "des": "",
          "address": "gkjg",
          "email": "jgjg",
          "phone": "gjg",
          "member_since": "2016-07-06",
          "img_company": "http:\/\/edutimeapp.com\/toshow\/chamber-of-commerc\/member-logo\/1467814186-DSC_5854.jpg11.jpg",
          "website": "jg",
          "city": "jg",
          "state": "gjg",
          "zip": "jgj"
        
      ]
    ,
    
      "business_category_name": "Banks\/Credit Unions\/Landers",
      "business_details": [
        
          "img_url": "http:\/\/edutimeapp.com\/toshow\/chamber-of-commerc\/member-logo\/1464667619-pnc.jpg",
          "name": "PNC Bank",
          "des": "PNC offers a wide range of services for all our customers, from individuals and small businesses, to corporations and government entities",
          "address": "",
          "email": "[e-mail]",
          "phone": "260-422-5922",
          "member_since": "2016-05-31",
          "img_company": "http:\/\/edutimeapp.com\/toshow\/chamber-of-commerc\/member-logo\/1464667619-pnc.jpg",
          "website": "",
          "city": "Fort Wayne",
          "state": "IN",
          "zip": "46808"
        
      ]
    
    ]

我的代码

- (void)viewDidLoad 

    [super viewDidLoad];
    names = [NSMutableArray new];
    ntm= [NSMutableArray new];
    adrsary=[NSMutableArray new];
    phoneary=[NSMutableArray new];
    emailary=[NSMutableArray new];
    websiteary=[NSMutableArray new];
    sensary=[NSMutableArray new];
    desary=[NSMutableArray new];
    image=[NSMutableArray new];

    [self.tabel_view setAllowsMultipleSelection:YES];

    NSURLRequest *req=[[NSURLRequest alloc]initWithURL:[NSURL URLWithString:@"http://edutimeapp.com/toshow/chamber-of-commerc/ws/fetch_member.php"]];
    response =[[NSMutableData alloc]init];
    [NSURLConnection connectionWithRequest:req delegate:self];


-(void)connectionDidFinishLoading:(NSURLConnection *)connection

    NSError *error;

    NSLog(@"Error in receiving data %@",error);
    NSMutableDictionary *json = [NSJSONSerialization JSONObjectWithData:response options:NSJSONReadingMutableLeaves  error:&error];
    NSLog(@"response data %@",json);

    NSArray *statuses = [json objectForKey:@"status"];

    for(NSDictionary *status in statuses)
        NSString *bussiness_category=[status valueForKey:@"business_category_name"];
        [names addObject:bussiness_category];
         NSLog(@"busness details %@",names);

        for(NSDictionary *details in [status objectForKey:@"business_details"])
        
            NSString *name=[details valueForKey:@"name"];
            [ntm addObject:name];
            NSLog(@"name %@",ntm);


            NSString *address=[details valueForKey:@"address"];
            [adrsary addObject:address];
            NSLog(@"address %@",adrsary);

            NSString *phone=[details valueForKey:@"phone"];
            [phoneary addObject:phone];
            NSLog(@"phone %@",phoneary);

            NSString *email=[details valueForKey:@"email"];
            [emailary addObject:email];
            NSLog(@"email %@",emailary);

            NSString *website=[details valueForKey:@"website"];
            [websiteary addObject:website];
            NSLog(@"website %@",websiteary);

            NSString *memsens=[details valueForKey:@"member_since"];
            [sensary addObject:memsens];
            NSLog(@"mem. sense %@",sensary);

            NSString *des=[details valueForKey:@"des"];
            [desary addObject:des];
            NSLog(@"desc. %@",desary);

            NSString *img=[details valueForKey:@"img_url"];
            [image addObject:img];
            NSLog(@"image. %@",image);
        
      

for (int i=0; i<[names count]; i++) 
    [arrayForBool addObject:[NSNumber numberWithBool:NO]];

    [self.tabel_view reloadData];


- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView

 return names.count;
 

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section

if ([[arrayForBool objectAtIndex:section] boolValue]) 
    return emailary.count;

else
    return 0;



- (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section

return 70;



- (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section


UIView *sectionHeaderView=[[UIView alloc]initWithFrame:CGRectMake(0, 0, tableView.frame.size.width,70)];

sectionHeaderView.backgroundColor=[UIColor grayColor];

sectionHeaderView.tag=section;

UIView *sectionsubHeaderView=[[UIView alloc]initWithFrame:CGRectMake(0, 0, tableView.frame.size.width,60)];

sectionsubHeaderView.backgroundColor=[UIColor blueColor];

UIImageView *arrow=[[UIImageView alloc]initWithFrame:CGRectMake(0, 0,60, 60)];

[arrow setImage:[UIImage imageNamed:@"arrow"]];

UILabel *Lbl=[[UILabel alloc]initWithFrame:CGRectMake(60, 0,tableView.frame.size.width-60, 60)];

Lbl.text=[names objectAtIndex:section];

Lbl.textColor=[UIColor whiteColor];

[sectionsubHeaderView addSubview:arrow];

[sectionsubHeaderView addSubview:Lbl];

[sectionHeaderView addSubview:sectionsubHeaderView];

UITapGestureRecognizer  *headerTapped   = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(sectionHeaderTapped:)];

[sectionHeaderView addGestureRecognizer:headerTapped];

return  sectionHeaderView;

 

- (void)sectionHeaderTapped:(UITapGestureRecognizer *)gestureRecognizer
 

NSIndexPath *indexPath = [NSIndexPath indexPathForRow:0 inSection:gestureRecognizer.view.tag];
if (indexPath.row == 0) 
    BOOL collapsed  = [[arrayForBool objectAtIndex:indexPath.section] boolValue];
    for (int i=0; i<[names count]; i++) 
        if (indexPath.section==i) 
            [arrayForBool replaceObjectAtIndex:i withObject:[NSNumber numberWithBool:!collapsed]];
        
    
    [self.tabel_view reloadSections:[NSIndexSet indexSetWithIndex:gestureRecognizer.view.tag] withRowAnimation:UITableViewRowAnimationAutomatic];






- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath

    MemberTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"ht"];
    if (cell==nil)
    
        NSArray *nib = [[NSBundle mainBundle] loadNibNamed:@"Cell" owner:self options:nil];
        cell = [nib objectAtIndex:0];
    


     cell.title.text=[NSString stringWithFormat:@"%@",[ntm objectAtIndex:indexPath.row]];

    cell.email.text=[NSString stringWithFormat:@"%@",[emailary objectAtIndex:indexPath.row]];
    cell.address_lbl.text=[NSString stringWithFormat:@"%@",[adrsary objectAtIndex:indexPath.row]];
    cell.phone_lbl.text=[NSString stringWithFormat:@"%@",[phoneary objectAtIndex:indexPath.row]];
    cell.web_lbl.text=[NSString stringWithFormat:@"%@",[websiteary objectAtIndex:indexPath.row]];
    cell.sens_lbl.text=[NSString stringWithFormat:@"%@",[sensary objectAtIndex:indexPath.row]];
    cell.des_lbl.text=[NSString stringWithFormat:@"%@",[desary objectAtIndex:indexPath.row]];

    NSData* imageData = [[NSData alloc] initWithContentsOfURL:[NSURL URLWithString: [image objectAtIndex:indexPath.row]]];
    UIImage* image = [[UIImage alloc] initWithData:imageData];
    cell.image_view.image =image;

    return  cell;


-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath

[arrayForBool replaceObjectAtIndex:indexPath.section withObject:[NSNumber numberWithBool:NO]];

[self.tabel_view reloadSections:[NSIndexSet indexSetWithIndex:indexPath.section] withRowAnimation:UITableViewRowAnimationAutomatic];

【问题讨论】：

您可以通过将 business_category 设置为 tableview 的一个部分来做到这一点，并且每个部分的返回 numberOfRows 为 no。 business_details 数组中的对象。

这是可能的，但你的屏幕截图是完美的，比如使用 tableview 标题的编码更多和编码更少。 tableview 标题的高度是固定的。

@Dev.RK 我能做什么请帮忙

我想你想要可扩展的表格视图？表示通过单击部分标题展开/折叠部分。

@BhadreshKathiriya 这个安卓应用的截图，我想在手机应用中实现

【参考方案1】：

试试这个-

获取一个全局数组，即 NSMutableArray *arrayForBool; 与您的其他数组。在viewDidLoad() 中分配这个数组，即arrayForBool=[[NSMutableArray alloc]init];

现在在 connectionDidFinishLoading 之前添加这些代码行 [tableview reloadData]-

for (int i=0; i<[names count]; i++) 
        [arrayForBool addObject:[NSNumber numberWithBool:NO]];
    

这是完整的代码-

#import "ViewController.h"
#import "MemberTableViewCell.h"
#import "secondVC.h"

@interface ViewController ()


    NSMutableData *response;
    NSMutableArray  *arrayForBool;
    NSMutableArray *business_details_array;
    NSMutableArray *names;
    NSDictionary *passDict;



@end

@implementation ViewController

- (void)viewDidLoad 

    [super viewDidLoad];

    names = [NSMutableArray new];

    arrayForBool=[[NSMutableArray alloc]init];

    [self.tableView setAllowsMultipleSelection:YES];

    NSURLRequest *req=[[NSURLRequest alloc]initWithURL:[NSURL URLWithString:@"http://edutimeapp.com/toshow/chamber-of-commerc/ws/fetch_member.php"]];

    NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:req delegate:self];

    if( connection )
    

        response = [NSMutableData new];

    




-(void) connection:(NSURLConnection *) connection didReceiveResponse:(NSURLResponse *)response1

    [response setLength:0];


-(void) connection:(NSURLConnection *)connection didReceiveData:(NSData *)data

    [response appendData:data];



-(void)connectionDidFinishLoading:(NSURLConnection *)connection

    NSError *error;

    NSMutableDictionary *json = [NSJSONSerialization JSONObjectWithData:response options:NSJSONReadingMutableLeaves  error:&error];

    NSArray *statuses = [json objectForKey:@"status"];
    names=[[NSMutableArray alloc]initWithArray:[statuses valueForKey:@"business_category_name"]];
    business_details_array=[[NSMutableArray alloc]initWithArray:[statuses valueForKey:@"business_details"]];



    for (int i=0; i<[names count]; i++) 
        [arrayForBool addObject:[NSNumber numberWithBool:NO]];
    

    [self.tableView reloadData];


- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView

    return names.count;


- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section

    if ([[arrayForBool objectAtIndex:section] boolValue]) 
        return [[business_details_array objectAtIndex:section] count];
    
    else
        return 0;



- (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section

    return 70;



- (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section


    UIView *sectionHeaderView=[[UIView alloc]initWithFrame:CGRectMake(0, 0, tableView.frame.size.width,70)];

    sectionHeaderView.backgroundColor=[UIColor grayColor];

    sectionHeaderView.tag=section;

    UIView *sectionsubHeaderView=[[UIView alloc]initWithFrame:CGRectMake(0, 0, tableView.frame.size.width,60)];

    sectionsubHeaderView.backgroundColor=[UIColor blueColor];

    UIImageView *arrow=[[UIImageView alloc]initWithFrame:CGRectMake(0, 0,60, 60)];

    [arrow setImage:[UIImage imageNamed:@"arrow.png"]];

    UILabel *Lbl=[[UILabel alloc]initWithFrame:CGRectMake(60, 0,tableView.frame.size.width-60, 60)];

    Lbl.text=[names objectAtIndex:section];

    Lbl.textColor=[UIColor whiteColor];

    [sectionsubHeaderView addSubview:arrow];

    [sectionsubHeaderView addSubview:Lbl];

    [sectionHeaderView addSubview:sectionsubHeaderView];

    UITapGestureRecognizer  *headerTapped   = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(sectionHeaderTapped:)];

    [sectionHeaderView addGestureRecognizer:headerTapped];

    return  sectionHeaderView;



- (void)sectionHeaderTapped:(UITapGestureRecognizer *)gestureRecognizer


    NSIndexPath *indexPath = [NSIndexPath indexPathForRow:0 inSection:gestureRecognizer.view.tag];
    if (indexPath.row == 0) 
        BOOL collapsed  = [[arrayForBool objectAtIndex:indexPath.section] boolValue];
        for (int i=0; i<[names count]; i++) 
            if (indexPath.section==i) 
                [arrayForBool replaceObjectAtIndex:i withObject:[NSNumber numberWithBool:!collapsed]];
            
        
        [self.tableView reloadSections:[NSIndexSet indexSetWithIndex:gestureRecognizer.view.tag] withRowAnimation:UITableViewRowAnimationAutomatic];

    




- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath

    MemberTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"ht"];
    if (cell==nil)
    
        NSArray *nib = [[NSBundle mainBundle] loadNibNamed:@"Cell" owner:self options:nil];
        cell = [nib objectAtIndex:0];
    


    cell.title.text=[NSString stringWithFormat:@"%@",[[[business_details_array objectAtIndex:indexPath.section] valueForKey:@"name"] objectAtIndex:indexPath.row]];

    cell.email.text=[NSString stringWithFormat:@"%@",[[[business_details_array objectAtIndex:indexPath.section] valueForKey:@"email"] objectAtIndex:indexPath.row]];

    cell.address_lbl.text=[NSString stringWithFormat:@"%@",[[[business_details_array objectAtIndex:indexPath.section] valueForKey:@"address"] objectAtIndex:indexPath.row]];

    cell.phone_lbl.text=[NSString stringWithFormat:@"%@",[[[business_details_array objectAtIndex:indexPath.section] valueForKey:@"phone"] objectAtIndex:indexPath.row]];

    cell.web_lbl.text=[NSString stringWithFormat:@"%@",[[[business_details_array objectAtIndex:indexPath.section] valueForKey:@"website"] objectAtIndex:indexPath.row]];

    cell.sens_lbl.text=[NSString stringWithFormat:@"%@",[[[business_details_array objectAtIndex:indexPath.section] valueForKey:@"member_since"] objectAtIndex:indexPath.row]];

    cell.des_lbl.text=[NSString stringWithFormat:@"%@",[[[business_details_array objectAtIndex:indexPath.section] valueForKey:@"des"] objectAtIndex:indexPath.row]];

    NSData* imageData = [[NSData alloc] initWithContentsOfURL:[NSURL URLWithString: [NSString stringWithFormat:@"%@",[[[business_details_array objectAtIndex:indexPath.section] valueForKey:@"img_url"] objectAtIndex:indexPath.row]]]];

    UIImage* image = [[UIImage alloc] initWithData:imageData];

    cell.image_view.image =image;

    return  cell;


-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath

    [arrayForBool replaceObjectAtIndex:indexPath.section withObject:[NSNumber numberWithBool:NO]];

    [self.tableView reloadSections:[NSIndexSet indexSetWithIndex:indexPath.section] withRowAnimation:UITableViewRowAnimationAutomatic];

    passDict=[[business_details_array objectAtIndex:indexPath.section] objectAtIndex:indexPath.row];

    [self performSegueWithIdentifier:@"gotoSeconVC" sender:self];

-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender

    if ([segue.identifier isEqualToString:@"gotoSeconVC"]) 
        secondVC *vc=[segue destinationViewController];
        vc.myPreviousVCDict=passDict;
    

@end

现在在secondVC.h 文件中-

#import <UIKit/UIKit.h>

@interface secondVC : UIViewController
@property(strong,nonatomic)NSDictionary *myPreviousVCDict;
@end

NSLog()viewDidLoad() 中的此词典。希望这会帮助你。使用它，您可以制作部分和可扩展部分的自定义标题。

这是输出屏幕-

storyBoard 必须是这个样子-

这就是你想要的 member_details--

【讨论】：

我使用您的代码并运行项目仅显示标题“business_category_name”然后我单击任何一个“business_category_name”并崩溃应用程序和错误显示如下：--[__NSArrayM objectAtIndex:]：索引 6 超出范围 [ 0 .. 5]'

你在吗，我卡住了，请帮忙。

成功运行，但所有类别数据中显示一个类别标题。 Dev.RK 我们所有的工作都很好，点击标题并展开单元格不能明智地划分类别。请帮帮我:(

抱歉回复晚了，但我告诉过你请删除行 cell.name.text=[NSString stringWithFormat:@"%@",[names objectAtIndex:indexPath.row]];来自 cellforrowatindexpath 方法

检查新截图..我想你想要这个..我对吗？