Ios 如何在UITableView中将节与其标题标签关联

我的

UITableView

中的每个部分都有一个

headerLabel.text

值，我想让它在

deleteButtonPressed

iAction内部运行的

deleteFromMatchCenter

函数中使用该值作为参数

正如你在我的代码中看到的那样，我尝试过这样做，但正如预期的那样，应用程序无法编译，因为

headerLabel.text

不是公共属性。如何使节上的“删除”按钮使用其特定的标题标签作为参数

MatchCenterViewController.h:

#import <UIKit/UIKit.h>
#import <Parse/Parse.h>
#import "AsyncImageView.h"
#import "SearchViewController.h"

@interface MatchCenterViewController : UIViewController <UITableViewDataSource>

@property (nonatomic) IBOutlet NSString *itemSearch;

@property (nonatomic, strong) NSArray *imageURLs;
@property (strong, nonatomic) NSString *matchingCategoryCondition;
@property (strong, nonatomic) NSString *matchingCategoryLocation;
@property (strong, nonatomic) NSNumber *matchingCategoryMaxPrice;
@property (strong, nonatomic) NSNumber *matchingCategoryMinPrice;

@property (strong, nonatomic) NSArray *matchCenterArray;
@property (strong, nonatomic) NSString *searchTerm;

@end  

MatchCenterViewController.h:
#进口
#进口
#导入“AsyncImageView.h”
#导入“SearchViewController.h”
@接口匹配CenterViewController:UIViewController
@属性（非原子）IBMString*itemSearch；
@属性（非原子，强）NSArray*imageURL；
@属性（强，非原子）NSString*匹配类别条件；
@属性（强，非原子）NSString*匹配类别位置；
@属性（强，非原子）NSNumber*匹配类别映射；
@属性（强，非原子）NSNumber*匹配类别价格；
@属性（强，非原子）NSArray*matchCenterArray；
@属性（强，非原子）NSString*searchTerm；
@结束

MatchCenterViewController.m：

#import "MatchCenterViewController.h"
#import <UIKit/UIKit.h>

@interface MatchCenterViewController () <UITableViewDataSource, UITableViewDelegate>
@property (nonatomic, strong) UITableView *matchCenter;
@end

@implementation MatchCenterViewController


- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
    }
    return self;
}


- (void)viewDidLoad
{
    [super viewDidLoad];

    self.matchCenter = [[UITableView alloc] initWithFrame:self.view.bounds style:UITableViewCellStyleSubtitle];
    self.matchCenter.frame = CGRectMake(0,50,320,self.view.frame.size.height-100);
    _matchCenter.dataSource = self;
    _matchCenter.delegate = self;
    [self.view addSubview:self.matchCenter];

    _matchCenterArray = [[NSArray alloc] init];
}

- (void)viewDidAppear:(BOOL)animated
{
    self.matchCenterArray = [[NSArray alloc] init];

    [PFCloud callFunctionInBackground:@"MatchCenter"
                       withParameters:@{
                                        @"test": @"Hi",
                                        }
                                block:^(NSArray *result, NSError *error) {

                                    if (!error) {
                                        _matchCenterArray = result;
                                        [_matchCenter reloadData];

                                        NSLog(@"Result: '%@'", result);
                                    }
                                }];
}


- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
    return _matchCenterArray.count;
}

//the part where i setup sections and the deleting of said sections

- (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section {
    return 21.0f;
}


- (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section {
    UIView *headerView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 21)];
    headerView.backgroundColor = [UIColor lightGrayColor];

    _searchTerm = [[[[_matchCenterArray  objectAtIndex:section] objectForKey:@"Top 3"] objectAtIndex:3]objectForKey:@"Search Term"];

    UILabel *headerLabel = [[UILabel alloc] initWithFrame:CGRectMake(8, 0, 250, 21)];
    headerLabel.text = [NSString stringWithFormat:@"%@", _searchTerm];
    headerLabel.font = [UIFont boldSystemFontOfSize:[UIFont systemFontSize]];
    headerLabel.textColor = [UIColor whiteColor];
    headerLabel.backgroundColor = [UIColor lightGrayColor];
    [headerView addSubview:headerLabel];

    UIButton *deleteButton = [UIButton buttonWithType:UIButtonTypeCustom];
    deleteButton.tag = section + 1000;
    deleteButton.frame = CGRectMake(300, 2, 17, 17);
    [deleteButton setImage:[UIImage imageNamed:@"xbutton.png"] forState:UIControlStateNormal];
    [deleteButton addTarget:self action:@selector(deleteButtonPressed:) forControlEvents:UIControlEventTouchUpInside];
    [headerView addSubview:deleteButton];
    return headerView;
}



- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
     return 3;
}


- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    // Initialize cell
    static NSString *CellIdentifier = @"Cell";
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (!cell) {
        // if no cell could be dequeued create a new one
        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier];
    }

    // No cell seperators = clean design
    tableView.separatorColor = [UIColor clearColor];

    // title of the item
    cell.textLabel.text = _matchCenterArray[indexPath.section][@"Top 3"][indexPath.row][@"Title"];
    cell.textLabel.font = [UIFont boldSystemFontOfSize:14];

    // price of the item
    cell.detailTextLabel.text = [NSString stringWithFormat:@"$%@", _matchCenterArray[indexPath.section][@"Top 3"][indexPath.row][@"Price"]];
    cell.detailTextLabel.textColor = [UIColor colorWithRed:0/255.0f green:127/255.0f blue:31/255.0f alpha:1.0f];

    // image of the item
    NSData *imageData = [NSData dataWithContentsOfURL:[NSURL URLWithString:_matchCenterArray[indexPath.section][@"Top 3"][indexPath.row][@"Image URL"]]];
    [[cell imageView] setImage:[UIImage imageWithData:imageData]];
    //[cell imageView].frame = CGRectMake(45.0,10.0,10,10);

    return cell;

}


- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
    return 65;
}


- (IBAction)deleteButtonPressed:(UIButton *)sender {

    [PFCloud callFunctionInBackground:@"deleteFromMatchCenter"
                       withParameters:@{
                                        @"searchTerm": headerLabel.text,
                                        }
                                block:^(NSDictionary *result, NSError *error) {

                                    if (!error) {
                                        NSLog(@"Result: '%@'", result);
                                        [_matchCenter reloadData];
                                    }
                                }];
}



- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}


/*
#pragma mark - Navigation

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
    // Get the new view controller using [segue destinationViewController].
    // Pass the selected object to the new view controller.
}
*/

@end

#导入“MatchCenterViewController.h”
#进口
@接口匹配CenterViewController（）
@属性（非原子，强）UITableView*matchCenter；
@结束
@CenterViewController的实现
-（id）initWithNibName:（NSString*）nibNameOrNil bundle:（NSBundle*）nibBundleOrNil
{
self=[super initWithNibName:nibNameOrNil bundle:nibBundleOrNil]；
如果（自我）{
}
回归自我；
}
-（无效）viewDidLoad
{
[超级视图下载]；
self.matchCenter=[[UITableView alloc]initWithFrame:self.view.bounds style:UITableViewCellStyleSubtitle]；
self.matchCenter.frame=CGRectMake（0,50320，self.view.frame.size.height-100）；
_matchCenter.dataSource=self；
_matchCenter.delegate=self；
[self.view addSubview:self.matchCenter]；
_matchCenterArray=[[NSArray alloc]init]；
}
-（无效）视图显示：（BOOL）动画
{
self.matchCenterArray=[[NSArray alloc]init]；
[PFCloud callFunctionInBackground:@“MatchCenter”
带参数：@{
@“测试”：@“嗨”，
}
块：^（NSArray*结果，NSError*错误）{
如果（！错误）{
_matchCenterArray=结果；
[_matchCenter重新加载数据]；
NSLog（@“结果：'%@'”，结果）；
}
}];
}
-（NSInteger）表格视图中的节数：（UITableView*）表格视图
{
返回_matchCenterArray.count；
}
//我设置节和删除所述节的部分
-（CGFloat）表格视图：（UITableView*）表格视图头部高度部分：（NSInteger）部分{
返回21.0f；
}
-（UIView*）表格视图：（UITableView*）表格视图用于标题部分：（NSInteger）部分{
UIView*headerView=[[UIView alloc]initWithFrame:CGRectMake（0,0320,21）]；
headerView.backgroundColor=[UIColor lightGrayColor]；
_searchTerm=[[[u matchCenterArray objectAtIndex:section]objectForKey:@“前三名”]objectAtIndex:3]objectForKey:@“搜索术语”]；
UILabel*headerLabel=[[UILabel alloc]initWithFrame:CGRectMake（8,0,250,21）]；
headerLabel.text=[NSString stringWithFormat:@“%@”，_searchTerm]；
headerLabel.font=[UIFont boldSystemFontOfSize:[UIFont systemFontSize]]；
headerLabel.textColor=[UIColor whiteColor]；
headerLabel.backgroundColor=[UIColor lightGrayColor]；
[headerView添加子视图：headerLabel]；
UIButton*deleteButton=[UIButton按钮类型：UIButtonTypeCustom]；
deleteButton.tag=截面+1000；
deleteButton.frame=CGRectMake（300,2,17,17）；
[deleteButton setImage:[UIImage ImageName:@“xbutton.png”]用于状态：UIControlStateNormal]；
[deleteButton addTarget:self action:@selector（deleteButton按下：）for ControlEvents:UIControlEventTouchUpInside]；
[headerView addSubview:deleteButton]；
返回headerView；
}
-（NSInteger）表视图：（UITableView*）表视图行数节：（NSInteger）节
{
返回3；
}
-（UITableViewCell*）tableView:（UITableView*）tableView cellForRowAtIndexPath:（NSIndexPath*）indexPath
{
//初始化单元格
静态NSString*CellIdentifier=@“Cell”；
UITableViewCell*单元格=[tableView dequeueReusableCellWithIdentifier:CellIdentifier]；
如果（！单元格）{
//如果没有单元格可以退出队列，请创建一个新的单元格
cell=[[UITableViewCell alloc]initWithStyle:UITableViewCellStyleSubtitle重用标识符：CellIdentifier]；
}
//无单元分离器=清洁设计
tableView.separatorColor=[UIColor clearColor]；
//项目名称
cell.textlab.text=_matchCenterArray[indexPath.section][@“Top 3”][indexPath.row][@“Title”]；
cell.textlab.font=[UIFont boldSystemFontOfSize:14]；
//商品价格
cell.detailTextLabel.text=[NSString stringWithFormat:@“$%@”，_matchCenterArray[indexath.section][@“Top 3”][indexPath.row][@“Price”]；
cell.detailtextlab.textColor=[UIColor colorWithRed:0/255.0f绿色：127/255.0f蓝色：31/255.0f alpha:1.0f]；
//项目的图像
NSData*imageData=[NSData DATA WITHCONTENTSOFURL:[NSURL URLWithString:_matchCenterArray[indexPath.section][@“Top 3”][indexPath.row][@“图像URL”]]；
[[cell imageView]设置图像：[UIImage imageWithData:imageData]]；
//[cell imageView].frame=CGRectMake（45.0,10.0,10,10）；
返回单元；
}
-（CGFloat）tableView:（UITableView*）表视图行高度索引路径：（NSIndexPath*）索引路径
{
返回65；
}
-（iAction）DeleteButton按下：（UIButton*）发送方{
[PFCloud callFunctionInBackground:@“deleteFromMatchCenter”
带参数：@
- (NSString *)textForSection:(NSInteger)section {
    [[[[_matchCenterArray  objectAtIndex:section] objectForKey:@"Top 3"] objectAtIndex:section] objectForKey:@"Search Term"];
}

- (IBAction)deleteButtonPressed:(UIButton *)sender {
    NSString *sectionText = [self textForSection:(sender.tag - 1000)];
    [PFCloud callFunctionInBackground:@"deleteFromMatchCenter"
                       withParameters:@{
                                        @"searchTerm": sectionText,
                                        }
                                block:^(NSDictionary *result, NSError *error) {

                                    if (!error) {
                                        NSLog(@"Result: '%@'", result);
                                        [_matchCenter reloadData];
                                    }
                                }];
}

UIButton *deleteButton = [UIButton buttonWithAction:^{
    [self deleteButtonPressedForSection:section];
}];

- (void)deleteButtonPressedForSection:(NSInteger)section {
    NSString *sectionText = [self textForSection:section];
}

+ (instancetype)buttonWithAction:(CompletionBlock)action {
    UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
    [button addTarget:action action:@selector(invoke) forControlEvents:UIControlEventTouchUpInside];
    [button setAssociatedObject:action forSelector:_cmd]; //you're going to have to write this method yourself
    return button;
}