動態展開tableView的cell[2]

時間 2019-11-22

標籤動態展開 tableview cell 简体版

原文原文鏈接

動態展開tableView的cell[2]ios

http://code4app.com/ios/%E5%8A%A8%E6%80%81%E6%B7%BB%E5%8A%A0cell/53845f8a933bf0740a8b458aapp

這份代碼也是參考別人而寫的-_-!性能

效果:atom

其實呢,這份代碼本人是不推薦的,很難維護,由於他的原理就是添加刪除cell,會有這複雜的刪除添加邏輯.spa

源碼:code

//
//  RootViewController.m
//  InsertTableViewCell
//
//  Copyright (c) 2014年 Y.X. All rights reserved.
//

#import "RootViewController.h"

@interface RootViewController ()<UITableViewDelegate, UITableViewDataSource>

@property (nonatomic, strong) UITableView     *tableView;
@property (nonatomic, strong) NSMutableArray  *dataArray;

@end

@implementation RootViewController

- (void)viewDidLoad
{
    [super viewDidLoad];
    
    // 初始化數據源
    NSDictionary *dic = @{@"Cell"       : @"MainCell",
                          @"isAttached" : @(NO)};
    
    NSArray *array = @[dic, dic, dic, dic, dic, dic, dic, dic, dic, dic, dic,
                       dic, dic, dic, dic, dic, dic, dic, dic, dic, dic, dic];
    _dataArray     = [NSMutableArray arrayWithArray:array];
    
    // 初始化tableView
    _tableView     = [[UITableView alloc] initWithFrame:self.view.bounds
                                                  style:UITableViewStylePlain];
    _tableView.delegate       = self;
    _tableView.dataSource     = self;
    [self.view addSubview:_tableView];
}

// ====================================
#pragma mark - 
#pragma mark dataSource
// ====================================
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    return _dataArray.count;
}

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
    return 1;
}

// 重繪重用會一直走這個方法
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    NSLog(@"重用");
    
    if ([_dataArray[indexPath.row][@"Cell"] isEqualToString:@"MainCell"])
    {
        static NSString *reusedID = @"YouXianMing";
        UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:reusedID];
        if (cell == nil)
        {
            cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault
                                          reuseIdentifier:reusedID];
        }
        
        cell.textLabel.text  = @"YouXianMing";
        cell.selectionStyle  = UITableViewCellSelectionStyleNone;
        cell.backgroundColor = [UIColor whiteColor];
        
        return cell;
    }
    
    if ([_dataArray[indexPath.row][@"Cell"] isEqualToString:@"AttachedCell"])
    {
        static NSString *reusedID = @"AttachedCell";
        UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:reusedID];
        if (cell == nil)
        {
            cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault
                                          reuseIdentifier:reusedID];
        }
        
        cell.textLabel.text      = @"NoZuoNoDie";
        cell.textLabel.textColor = [UIColor redColor];
        cell.textLabel.font      = [UIFont fontWithName:@"HelveticaNeue-Thin"
                                                   size:12.f];
        cell.selectionStyle      = UITableViewCellSelectionStyleNone;
        cell.backgroundColor     = [UIColor whiteColor];
        
        return cell;
    }
    
    return nil;
}

// ====================================
#pragma mark -
#pragma mark delegate
// ====================================
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
    NSLog(@"計算高度");

    if ([self.dataArray[indexPath.row][@"Cell"] isEqualToString:@"MainCell"])
    {
        return 50;
    }
    else
    {
        return 30;
    }
}

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    NSLog(@"選擇了第 %d 行", indexPath.row);
    
    [tableView deselectRowAtIndexPath:indexPath animated:YES];
    
    NSIndexPath *path = nil;
    
    if ([self.dataArray[indexPath.row][@"Cell"] isEqualToString:@"MainCell"])
    {
        // 若是點擊的時MainCell,則添加一行
        path = [NSIndexPath indexPathForItem:(indexPath.row + 1)
                                   inSection:indexPath.section];
    }
    else
    {
        path = indexPath;
    }
    
    if ([self.dataArray[indexPath.row][@"isAttached"] boolValue] == YES)
    {
        // 關閉附加cell
        self.dataArray[path.row - 1] = @{@"Cell"       : @"MainCell",
                                         @"isAttached" : @(NO)};
        
        [self.dataArray removeObjectAtIndex:path.row];
        
        [self.tableView beginUpdates];
        [self.tableView deleteRowsAtIndexPaths:@[path]
                              withRowAnimation:UITableViewRowAnimationAutomatic];
        [self.tableView endUpdates];
        
    }
    else
    {
        // 打開附加cell
        self.dataArray[path.row - 1] = @{@"Cell"       : @"MainCell",
                                         @"isAttached" : @(YES)};
        
        NSDictionary * addDic        = @{@"Cell"       : @"AttachedCell",
                                         @"isAttached" : @(YES)};
        
        [self.dataArray insertObject:addDic
                             atIndex:path.row];
        
        [self.tableView beginUpdates];
        [self.tableView insertRowsAtIndexPaths:@[path]
                              withRowAnimation:UITableViewRowAnimationAutomatic];
        [self.tableView endUpdates];
    }
}

@end