UITableView练习一

布满荆棘的人生 2022-08-19 15:19 179阅读 0赞

UITableView的功能太过强大，今天只是初学了一下，还有很多内容没有考虑。

功能代码出自github的，具体哪个人的忘了，就不贴链接了，抱歉。

#import <Foundation/Foundation.h>
    #import <UIKit/UIKit.h>
    
    typedef void(^InformationClick)(id sender);
    @interface TableViewHeader : UIView
    {
        @private
        UIButton*_Btn;
        UILabel*_HeaderLabel;
        InformationClick _OnInfomationClick;
    }
    @property (copy,nonatomic) NSString* HeaderName;
    @property (assign,nonatomic) BOOL IsOpen;
    -(void)setInformatinClickEvent:(InformationClick) AEvent;
    @end

#import "TableViewHeader.h"
    
    @implementation TableViewHeader
    -(void)InfomationClick
    {
        if (_OnInfomationClick) {
            _OnInfomationClick(self);
        }
    }
    -(void)setInformatinClickEvent:(InformationClick)AEvent
    {
        _OnInfomationClick = AEvent;
    }
    -(instancetype)initWithFrame:(CGRect)frame
    {
        if (self = [super initWithFrame:frame]) {
            _IsOpen = NO;
            _HeaderLabel = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 150, 30)];
            _HeaderLabel.backgroundColor = [UIColor clearColor];
            [self addSubview:_HeaderLabel];
            _Btn = [UIButton buttonWithType:UIButtonTypeInfoLight];
            [_Btn setFrame:CGRectMake(frame.size.width - 40, 0, 40, 30)];
            [_Btn addTarget:self action:@selector(InfomationClick) forControlEvents:UIControlEventTouchUpInside];
            _Btn.opaque = NO;
            [self addSubview:_Btn];
        }
        return self;
    }
    -(void) setIsOpen:(BOOL)IsOpen
    {
        _IsOpen = IsOpen;
    }
    -(void)setHeaderName:(NSString *)HeaderName
    {
        _HeaderName = HeaderName;
        _HeaderLabel.text = HeaderName;
    }
    @end

#import <UIKit/UIKit.h>
    
    @interface ViewController : UIViewController<UITableViewDataSource,UITableViewDelegate>
    {
        @private
        UITableView* _MainView;
        NSArray* _RootSource;
    }
    @end

#import "ViewController.h"
    #import "TableViewHeader.h"
    
    static const NSInteger _sectionIndex = 100;
    @interface ViewController ()
    
    @end
    
    @implementation ViewController
    
    #pragma mark SetHeader
    
    -(void)HeaderInfoClick:(NSNotification*)sender
    {
        TableViewHeader* _Header = sender.object;
        _Header.IsOpen = !_Header.IsOpen;
        NSInteger section = _Header.tag - _sectionIndex;
        NSMutableDictionary* gropDic = [_RootSource objectAtIndex:section];
        [gropDic setObject:[NSNumber numberWithBool:_Header.IsOpen] forKey:@"open"];
        [_MainView reloadSections:[NSIndexSet indexSetWithIndex:section]
                 withRowAnimation:UITableViewRowAnimationNone];
    }
    
    -(void)GropHeaderTap:(UITapGestureRecognizer*)ATap
    {
        TableViewHeader* _Header = (TableViewHeader*) ATap.view;
        [[NSNotificationCenter defaultCenter] postNotificationName:@"HeaderInfo" object:_Header];
    }
    -(CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section
    {
        return 30;
    }
    
    -(UIView*)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section
    {
        TableViewHeader* _Header = (TableViewHeader*)[tableView viewWithTag:_sectionIndex + section];
        if (!_Header) {
            _Header = [[TableViewHeader alloc] initWithFrame:CGRectMake(0, 0, self.view.bounds.size.width, 30)];
            _Header.tag = _sectionIndex + section;
            UITapGestureRecognizer* _tapGesture = [[UITapGestureRecognizer alloc]
                                                   initWithTarget:self
                                                   action:@selector(GropHeaderTap:)];
            [_Header addGestureRecognizer:_tapGesture];
            [_Header setInformatinClickEvent:^(id sender) {
                TableViewHeader* _Header = sender;
                [[NSNotificationCenter defaultCenter] postNotificationName:@"HeaderInfo"
                                                                    object:_Header];
            }];
        }
        NSMutableDictionary* gropDic = [_RootSource objectAtIndex:section];
        _Header.HeaderName = [gropDic objectForKey:@"groupName"];
        return _Header;
    }
    -(NSString*)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section
    {
        NSMutableDictionary* gropDic = [_RootSource objectAtIndex:section];
        return [gropDic objectForKey:@"groupname"];
    }
    -(NSString*)tableView:(UITableView *)tableView titleForFooterInSection:(NSInteger)section
    {
        NSMutableDictionary* gropDic = [_RootSource objectAtIndex:section];
        NSArray* memberList = [gropDic objectForKey:@"memberList"];
        NSString* str = [NSString stringWithFormat:@"第%ld组(共%ld人)",section,[memberList count]];
        return str;
    }
    - (void)viewDidLoad {
        [super viewDidLoad];
        CGRect viewFrame = [[UIScreen mainScreen] bounds];
        [[NSNotificationCenter defaultCenter] addObserver:self
                                                 selector:@selector(HeaderInfoClick:)
                                                     name:@"HeaderInfo"
                                                   object:nil];
        viewFrame.origin.y = 60;
        viewFrame.size.height = viewFrame.size.height - 30;
        _MainView = [[UITableView alloc] initWithFrame:viewFrame
                                                 style:UITableViewStyleGrouped];
        _MainView.dataSource = self;
        _MainView.delegate = self;
        UIView* w =[[UIView alloc] initWithFrame:CGRectMake(0, 0, 1, 1)];
        [_MainView setTableHeaderView:w];
        [_MainView setBackgroundColor:[UIColor greenColor]];
        [self.view addSubview:_MainView];
        CGRect frame=self.view.frame;
        UIToolbar* _toolbar=[[UIToolbar alloc]initWithFrame:CGRectMake(0, 30, frame.size.width, 30)];
        [self.view addSubview:_toolbar];
        
        UIBarButtonItem *removeButton=[[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemTrash target:self action:nil];
        UIBarButtonItem *flexibleButton=[[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil];
        UIBarButtonItem *addButton=[[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemAdd target:self action:nil];
        NSArray *buttonArray=[NSArray arrayWithObjects:removeButton,flexibleButton,addButton, nil];
        _toolbar.items=buttonArray;
        
        
        NSString* path = [[NSBundle mainBundle] pathForResource:@"GroupList" ofType:@"plist"];
        _RootSource = [[NSMutableArray alloc] initWithContentsOfFile:path];
    }
    #pragma mark SetTableView
    -(NSInteger) numberOfSectionsInTableView:(UITableView *)tableView
    {
        return [_RootSource count];
    }
    -(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
    {
        NSMutableDictionary* groupDic = [_RootSource objectAtIndex:section];
        BOOL isOpen = [[groupDic objectForKey:@"open"] boolValue];
        if (isOpen) {
            return [[groupDic objectForKey:@"memberList"]count];
        }
        else{
            return 0;
        }
    }
    -(UITableViewCell*)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
    {
        UITableViewCell* _Cell = [tableView dequeueReusableCellWithIdentifier:@"cell"];
        if (!_Cell) {
            _Cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle
                                           reuseIdentifier:@"cell"];
            if (indexPath.row == 0) {
                UISwitch *sw=[[UISwitch alloc]init];
                _Cell.accessoryView=sw;
            }
            else{
                _Cell.accessoryType = UITableViewCellAccessoryDetailButton;
            }
        }
        NSMutableDictionary* groupDic = [_RootSource objectAtIndex:indexPath.section];
        NSArray* Memlist = [groupDic objectForKey:@"memberList"];
        NSDictionary* MemDic = [Memlist objectAtIndex:indexPath.row];
        _Cell.textLabel.text = [MemDic objectForKey:@"name"];
        _Cell.detailTextLabel.text = [MemDic objectForKey:@"desc"];
        _Cell.detailTextLabel.textColor = [UIColor darkGrayColor];
        _Cell.imageView.image = [UIImage imageNamed:[MemDic objectForKey:@"icon"]];
        
        return _Cell;
    }
    - (void)didReceiveMemoryWarning {
        [super didReceiveMemoryWarning];
        // Dispose of any resources that can be recreated.
    }
    
    @end

效果图

![Center][]

[Center]: /images/20220731/1ff081da7e44451e9dfb6d35cbb54d4f.png