使用HVTableView动态展开tableView中的cell

使用HVTableView动态展开tableView中的cell

效果:

源码:

HVTableView.h 与 HVTableView.m

//
//  HVTableView.h
//  HRVTableView
//
//  Created by Hamidreza Vakilian on 25/11/2013
//  Copyright (c) 2013 Hamidreza Vakilian. All rights reserved.
//  Website: http://www.infracyber.com/
//  Email:   xerxes235@yahoo.com
//

//
//***************    HVTableView - UITableView with expand/collapse feature   *****************************
//                    by hamidreza vakilian
//
//
//    This is a subclass of UITableView with expand/collapse feature that may come so handy in many apps.
//    The developer can save a lot of time using an expand/collapse tableView instead of creating a detail viewController for
//        every cell. I mean the details of each cell can be displayed immediately on the same table without switching to
//        another view. On the other hand in my opinion it far more impressive and eye-catching from a regular user's view.
//
//        To create an instance of HVTableView you go by code.
//      (currently I you can't do it from xib - I will work on that later)
//        That's simple as:
//
//            HVTableView* myTable = [[HVTableView alloc] initWithFrame:CGRectMake(84, 250, 600, 600) expandOnlyOneCell:NO enableAutoScroll:YES];
//            myTable.HVTableViewDelegate = self;
//            myTable.HVTableViewDataSource = self;
//            [myTable reloadData];
//            [self.view addSubview:myTable];

//    Two important parameters when initializing the HVTableView
//        if expandOnlyOneCell==TRUE: Just one cell will be expanded at a time.
//        if expandOnlyOneCell==FALSE: multiple cells can be expanded at a time
//
//        if enableAutoScroll==TRUE: when the user touches a cell, the HVTableView will automatically scroll to it
//        if enableAutoScroll==FALSE: when the user touches a cell, the HVTableView won't scroll. but the if the cell was close to the bottom of the table; the lower part of it may go invisible because it grows
//
//
//    Your viewController must conform to HVTableViewDelegate, HVTableViewDataSource protocols. Just like the regular
//            UITableView
//
//    Like before you implement these familiar delegate functions:
//        -(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
//        -(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
//
//    I added a boolean parameter the heightForRowAtIndexPath function so you will return different values for an expanded or a collapsed cell.
//    (isExpanded==TRUE: return the size of the cell in expanded state)
//    (isExpanded==FALSE: return the size of the cell in collapsed (initial) state)
//
//        -(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath isExpanded:(BOOL)isexpanded
//
//
// I also added a boolean parameter to the cellForRowAtIndexPath function too. update the cell's content respecting it's state (isExpanded)
//        -(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath isExpanded:(BOOL)isExpanded
//
//
//    Now the interesting functions are here. Implement this function and it will be fired when a cell is going to expand. You can perform your drawings, animations, etc. in this function:
//        -(void)tableView:(UITableView *)tableView collapseCell: (UITableViewCell*)cell withIndexPath:(NSIndexPath*) indexPath;
//
//  Implement this function. it will be fired when a cell is going to collapse. You can perform your drawings, animations, etc. or clearing up the cell in this function:
//        -(void)tableView:(UITableView *)tableView expandCell: (UITableViewCell*)cell withIndexPath:(NSIndexPath*) indexPath;
//
// IMPORTANT NOTE: there are some delegate functions from UITableViewDelegate that I have commented their forwarding. If you need to implement those on your viewController or smth, go to HVTableView.m and uncomment those delegate functions. If you don't uncomment them; your delegate functions won't fire up.
//
//
//    This code may contain bugs. I don't garauntee its functionality, but use it on your own risk. I also tried to craft it with best performance, yet it can be optimized more.
//
//
//    Please don't hesitate to mail me your feedbacks and suggestions or a bug report. I would be very thankful of your responses.
//
//    ON THE BOTTOM LINE: I allow you to use my code in your applications with freedom in making any modifications, but if you are going to do so, or you just like it and want further updates and bug fixes please consider donating me via this url:
//    https://www.paypal.com/cgi-bin/webscr?cmd=_donations&business=xerxes235%40yahoo%2ecom&lc=AE&item_name=Hamidreza%20Vakilian&item_number=HVTableView%20donation&currency_code=USD&bn=PP%2dDonationsBF%3abtn_donateCC_LG%2egif%3aNonHosted
//
//
//    Thanks,....
// ***************************************************************************************************************

#import <UIKit/UIKit.h>

@protocol HVTableViewDataSource <NSObject>
@required
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section;
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath isExpanded:(BOOL)isExpanded;
-(void)tableView:(UITableView *)tableView collapseCell: (UITableViewCell*)cell withIndexPath:(NSIndexPath*) indexPath;
-(void)tableView:(UITableView *)tableView expandCell: (UITableViewCell*)cell withIndexPath:(NSIndexPath*) indexPath;
@optional

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView;
- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section;
- (NSString *)tableView:(UITableView *)tableView titleForFooterInSection:(NSInteger)section;
- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath;
- (BOOL)tableView:(UITableView *)tableView canMoveRowAtIndexPath:(NSIndexPath *)indexPath;
- (NSArray *)sectionIndexTitlesForTableView:(UITableView *)tableView;
- (NSInteger)tableView:(UITableView *)tableView sectionForSectionIndexTitle:(NSString *)title atIndex:(NSInteger)index;
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath;
- (void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath *)sourceIndexPath toIndexPath:(NSIndexPath *)destinationIndexPath;
@end

@protocol HVTableViewDelegate <NSObject>
@optional
- (void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath;
- (void)tableView:(UITableView *)tableView willDisplayHeaderView:(UIView *)view forSection:(NSInteger)section NS_AVAILABLE_IOS(6_0);
- (void)tableView:(UITableView *)tableView willDisplayFooterView:(UIView *)view forSection:(NSInteger)section NS_AVAILABLE_IOS(6_0);
- (void)tableView:(UITableView *)tableView didEndDisplayingCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath*)indexPath NS_AVAILABLE_IOS(6_0);
- (void)tableView:(UITableView *)tableView didEndDisplayingHeaderView:(UIView *)view forSection:(NSInteger)section NS_AVAILABLE_IOS(6_0);
- (void)tableView:(UITableView *)tableView didEndDisplayingFooterView:(UIView *)view forSection:(NSInteger)section NS_AVAILABLE_IOS(6_0);
-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath isExpanded:(BOOL)isExpanded;
- (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section;
- (CGFloat)tableView:(UITableView *)tableView heightForFooterInSection:(NSInteger)section;
- (CGFloat)tableView:(UITableView *)tableView estimatedHeightForRowAtIndexPath:(NSIndexPath *)indexPath NS_AVAILABLE_IOS(7_0);
- (CGFloat)tableView:(UITableView *)tableView estimatedHeightForHeaderInSection:(NSInteger)section NS_AVAILABLE_IOS(7_0);
- (CGFloat)tableView:(UITableView *)tableView estimatedHeightForFooterInSection:(NSInteger)section NS_AVAILABLE_IOS(7_0);
- (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section;
- (UIView *)tableView:(UITableView *)tableView viewForFooterInSection:(NSInteger)section;
- (UITableViewCellAccessoryType)tableView:(UITableView *)tableView accessoryTypeForRowWithIndexPath:(NSIndexPath *)indexPath NS_DEPRECATED_IOS(2_0, 3_0);
- (void)tableView:(UITableView *)tableView accessoryButtonTappedForRowWithIndexPath:(NSIndexPath *)indexPath;
- (BOOL)tableView:(UITableView *)tableView shouldHighlightRowAtIndexPath:(NSIndexPath *)indexPath NS_AVAILABLE_IOS(6_0);
- (void)tableView:(UITableView *)tableView didHighlightRowAtIndexPath:(NSIndexPath *)indexPath NS_AVAILABLE_IOS(6_0);
- (void)tableView:(UITableView *)tableView didUnhighlightRowAtIndexPath:(NSIndexPath *)indexPath NS_AVAILABLE_IOS(6_0);
- (NSIndexPath *)tableView:(UITableView *)tableView willSelectRowAtIndexPath:(NSIndexPath *)indexPath;
- (NSIndexPath *)tableView:(UITableView *)tableView willDeselectRowAtIndexPath:(NSIndexPath *)indexPath NS_AVAILABLE_IOS(3_0);
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath;
- (void)tableView:(UITableView *)tableView didDeselectRowAtIndexPath:(NSIndexPath *)indexPath NS_AVAILABLE_IOS(3_0);
- (UITableViewCellEditingStyle)tableView:(UITableView *)tableView editingStyleForRowAtIndexPath:(NSIndexPath *)indexPath;
- (NSString *)tableView:(UITableView *)tableView titleForDeleteConfirmationButtonForRowAtIndexPath:(NSIndexPath *)indexPath NS_AVAILABLE_IOS(3_0);
- (BOOL)tableView:(UITableView *)tableView shouldIndentWhileEditingRowAtIndexPath:(NSIndexPath *)indexPath;
- (void)tableView:(UITableView*)tableView willBeginEditingRowAtIndexPath:(NSIndexPath *)indexPath;
- (void)tableView:(UITableView*)tableView didEndEditingRowAtIndexPath:(NSIndexPath *)indexPath;
- (NSIndexPath *)tableView:(UITableView *)tableView targetIndexPathForMoveFromRowAtIndexPath:(NSIndexPath *)sourceIndexPath toProposedIndexPath:(NSIndexPath *)proposedDestinationIndexPath;
- (NSInteger)tableView:(UITableView *)tableView indentationLevelForRowAtIndexPath:(NSIndexPath *)indexPath;
- (BOOL)tableView:(UITableView *)tableView shouldShowMenuForRowAtIndexPath:(NSIndexPath *)indexPath NS_AVAILABLE_IOS(5_0);
- (BOOL)tableView:(UITableView *)tableView canPerformAction:(SEL)action forRowAtIndexPath:(NSIndexPath *)indexPath withSender:(id)sender NS_AVAILABLE_IOS(5_0);
- (void)tableView:(UITableView *)tableView performAction:(SEL)action forRowAtIndexPath:(NSIndexPath *)indexPath withSender:(id)sender NS_AVAILABLE_IOS(5_0);
@end

@interface HVTableView : UITableView <UITableViewDataSource, UITableViewDelegate>
{

    NSIndexPath *selectedIndexPath;
    int actionToTake;
    NSMutableArray* expandedIndexPaths;
}

@property (weak,nonatomic) id <HVTableViewDelegate> HVTableViewDelegate;
@property (weak,nonatomic) id <HVTableViewDataSource> HVTableViewDataSource;
@property (nonatomic) BOOL expandOnlyOneCell;
@property (nonatomic) BOOL enableAutoScroll;

- (id)initWithFrame:(CGRect)frame
  expandOnlyOneCell:(BOOL)expandOnlyOneCell
   enableAutoScroll:(BOOL)enableAutoScroll;

@end

//
//  HVTableView.m
//  HRVTableView
//
//  Created by Hamidreza Vakilian on 25/11/2013
//  Copyright (c) 2013 Hamidreza Vakilian. All rights reserved.
//  Website: http://www.infracyber.com/
//  Email:   xerxes235@yahoo.com
//

#import "HVTableView.h"

@implementation HVTableView
@synthesize HVTableViewDelegate, HVTableViewDataSource;

- (id)initWithCoder:(NSCoder *)aDecoder {
    self = [super initWithCoder:aDecoder];
    if(self) {
        self.delegate = self;
        self.dataSource = self;
        expandedIndexPaths = [NSMutableArray new];
    }
    return self;
}

- (id)initWithFrame:(CGRect)frame expandOnlyOneCell:(BOOL)expandOnlyOneCell enableAutoScroll: (BOOL)enableAutoScroll
{
    self = [super initWithFrame:frame];
    if (self) {
        // Initialization code
        _expandOnlyOneCell = expandOnlyOneCell;
        if (!_expandOnlyOneCell)
            expandedIndexPaths = [[NSMutableArray alloc] init];

        _enableAutoScroll = enableAutoScroll;

        self.delegate = self;
        self.dataSource = self;

    }
    return self;
}

//////// IMPORTANT!!!!!!!!!!!!!!!!!!!!!
//////// UITableViewDataSource Protocol Forwarding
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    return [HVTableViewDataSource tableView:tableView numberOfRowsInSection:section];
}

-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
    return [HVTableViewDataSource numberOfSectionsInTableView:tableView];
}

- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section
{
    if ([HVTableViewDataSource respondsToSelector:@selector(tableView:titleForHeaderInSection:)])
        return [HVTableViewDataSource tableView:tableView titleForHeaderInSection:section];
    return nil;
}

- (NSString *)tableView:(UITableView *)tableView titleForFooterInSection:(NSInteger)section
{    if ([HVTableViewDataSource respondsToSelector:@selector(tableView:titleForFooterInSection:)])
    return [HVTableViewDataSource tableView:tableView titleForFooterInSection:section];
    return nil;
}

- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath
{    if ([HVTableViewDataSource respondsToSelector:@selector(tableView:canEditRowAtIndexPath:)])
    return [HVTableViewDataSource tableView:tableView canEditRowAtIndexPath:indexPath];
    return NO;
}

- (BOOL)tableView:(UITableView *)tableView canMoveRowAtIndexPath:(NSIndexPath *)indexPath
{
    if ([HVTableViewDataSource respondsToSelector:@selector(tableView:canMoveRowAtIndexPath:)])
        return [HVTableViewDataSource tableView:tableView canMoveRowAtIndexPath:indexPath];
    return NO;
}

- (NSArray *)sectionIndexTitlesForTableView:(UITableView *)tableView
{
    if ([HVTableViewDataSource respondsToSelector:@selector(sectionIndexTitlesForTableView:)])
        return [HVTableViewDataSource sectionIndexTitlesForTableView:tableView];
    return nil;
}

- (NSInteger)tableView:(UITableView *)tableView sectionForSectionIndexTitle:(NSString *)title atIndex:(NSInteger)index
{
    if ([HVTableViewDataSource respondsToSelector:@selector(tableView:sectionForSectionIndexTitle:atIndex:)])
        return [HVTableViewDataSource tableView:tableView sectionForSectionIndexTitle:title atIndex:index];
    return ;
}

- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath
{
    if ([HVTableViewDataSource respondsToSelector:@selector(tableView:commitEditingStyle:forRowAtIndexPath:)])
        return [HVTableViewDataSource tableView:tableView commitEditingStyle:editingStyle forRowAtIndexPath:indexPath];
}

- (void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath *)sourceIndexPath toIndexPath:(NSIndexPath *)destinationIndexPath
{
    if ([HVTableViewDataSource respondsToSelector:@selector(tableView:moveRowAtIndexPath:toIndexPath:)])
        return [HVTableViewDataSource tableView:tableView moveRowAtIndexPath:sourceIndexPath toIndexPath:destinationIndexPath];
}

-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    UITableViewCell* cell;

    if (self.expandOnlyOneCell)
    {
        if (actionToTake == ) // e.g. the first time or an expanded cell from before gets in to view
        {
            if (selectedIndexPath)
                if (selectedIndexPath.row == indexPath.row && selectedIndexPath.section == indexPath.section)
                {
                    cell = [HVTableViewDataSource tableView:tableView cellForRowAtIndexPath:indexPath isExpanded:YES];//i want it expanded
                    return cell;
                }

            cell = [HVTableViewDataSource tableView:tableView cellForRowAtIndexPath:indexPath isExpanded:NO];

            return cell; //it's already collapsed!
        }

        cell = [HVTableViewDataSource tableView:tableView cellForRowAtIndexPath:indexPath isExpanded:NO];

        if(actionToTake == -)
        {
            [HVTableViewDataSource tableView:tableView collapseCell:cell withIndexPath:indexPath];
            actionToTake = ;
        }
        else
        {
            [HVTableViewDataSource tableView:tableView expandCell:cell withIndexPath:indexPath];
            actionToTake = ;
        }
    }
    else
    {
        if (actionToTake == ) // e.g. the first time or an expanded cell from before gets in to view
        {
            BOOL alreadyExpanded = NO;
            NSIndexPath* correspondingIndexPath;
            for (NSIndexPath* anIndexPath in expandedIndexPaths) {
                if (anIndexPath.row == indexPath.row && anIndexPath.section == indexPath.section)
                {alreadyExpanded = YES; correspondingIndexPath = anIndexPath;}
            }

            if (alreadyExpanded)
                cell = [HVTableViewDataSource tableView:tableView cellForRowAtIndexPath:indexPath isExpanded:YES];
            else
                cell = [HVTableViewDataSource tableView:tableView cellForRowAtIndexPath:indexPath isExpanded:NO];

            return cell; //it's already collapsed!

        }

        cell = [HVTableViewDataSource tableView:tableView cellForRowAtIndexPath:indexPath isExpanded:NO];

        if(actionToTake == -)
        {
            [HVTableViewDataSource tableView:tableView collapseCell:cell withIndexPath:indexPath];
            actionToTake = ;
        }
        else
        {
            [HVTableViewDataSource tableView:tableView expandCell:cell withIndexPath:indexPath];
            actionToTake = ;
        }
    }

    return cell;
}

//////// IMPORTANT!!!!!!!!!!!!!!!!!!!!!
//////// IMPORTANT!!!!!!!!!!!!!!!!!!!!!
//////// IMPORTANT!!!!!!!!!!!!!!!!!!!!!
//////// IMPORTANT!!!!!!!!!!!!!!!!!!!!!
//////// IMPORTANT!!!!!!!!!!!!!!!!!!!!!
//////// UITableViewDelegate Protocol Forwarding
//////// NOTE::::: If you want to use any of these protocols in your code; you must uncomment it. I have comment them for performance reasons
/*
 - (void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath
 {
    if ([HVTableViewDelegate respondsToSelector:@selector(tableView:willDisplayCell:forRowAtIndexPath:)])
 [HVTableViewDelegate tableView:tableView willDisplayCell:cell forRowAtIndexPath:indexPath];
 }

 -(void)tableView:(UITableView *)tableView willDisplayHeaderView:(UIView *)view forSection:(NSInteger)section
 {
    if ([HVTableViewDelegate respondsToSelector:@selector(tableView:willDisplayHeaderView:forSection:)])
 [HVTableViewDelegate tableView:tableView willDisplayHeaderView:view forSection:section];
 }

 -(void)tableView:(UITableView *)tableView willDisplayFooterView:(UIView *)view forSection:(NSInteger)section
 {
    if ([HVTableViewDelegate respondsToSelector:@selector(tableView:willDisplayFooterView:forSection:)])
 [HVTableViewDelegate tableView:tableView willDisplayFooterView:view forSection:section];
 }

 -(void)tableView:(UITableView *)tableView didEndDisplayingCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath
 {
    if ([HVTableViewDelegate respondsToSelector:@selector(tableView:didEndDisplayingCell:forRowAtIndexPath:)])
 [HVTableViewDelegate tableView:tableView didEndDisplayingCell:cell forRowAtIndexPath:indexPath];
 }

 - (void)tableView:(UITableView *)tableView didEndDisplayingHeaderView:(UIView *)view forSection:(NSInteger)section
 {
    if ([HVTableViewDelegate respondsToSelector:@selector(tableView:didEndDisplayingHeaderView:forSection:)])
 [HVTableViewDelegate tableView:tableView didEndDisplayingHeaderView:view forSection:section];
 }

 - (void)tableView:(UITableView *)tableView didEndDisplayingFooterView:(UIView *)view forSection:(NSInteger)section
 {
    if ([HVTableViewDelegate respondsToSelector:@selector(tableView:didEndDisplayingFooterView:forSection:)])
 [HVTableViewDelegate tableView:tableView didEndDisplayingFooterView:view forSection:section];
 }
 - (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section
 {
    if ([HVTableViewDelegate respondsToSelector:@selector(tableView:heightForHeaderInSection:)])
 return [HVTableViewDelegate tableView:tableView heightForHeaderInSection:section];
    return 0;
 }

 - (CGFloat)tableView:(UITableView *)tableView heightForFooterInSection:(NSInteger)section
 {
    if ([HVTableViewDelegate respondsToSelector:@selector(tableView:heightForFooterInSection:)])
 return [HVTableViewDelegate tableView:tableView heightForFooterInSection:section];
    return 0;
 }

 - (CGFloat)tableView:(UITableView *)tableView estimatedHeightForRowAtIndexPath:(NSIndexPath *)indexPath NS_AVAILABLE_IOS(7_0)
 {
    if ([HVTableViewDelegate respondsToSelector:@selector(tableView:estimatedHeightForRowAtIndexPath:)])
 return [HVTableViewDelegate tableView:tableView estimatedHeightForRowAtIndexPath:indexPath];
    return 100;
 }

 - (CGFloat)tableView:(UITableView *)tableView estimatedHeightForHeaderInSection:(NSInteger)section NS_AVAILABLE_IOS(7_0)
 {
    if ([HVTableViewDelegate respondsToSelector:@selector(tableView:estimatedHeightForHeaderInSection:)])
 return [HVTableViewDelegate tableView:tableView estimatedHeightForHeaderInSection:section];
    return 0;
 }

 - (CGFloat)tableView:(UITableView *)tableView estimatedHeightForFooterInSection:(NSInteger)section NS_AVAILABLE_IOS(7_0);
 {
    if ([HVTableViewDelegate respondsToSelector:@selector(tableView:estimatedHeightForFooterInSection:)])
 return [HVTableViewDelegate tableView:tableView estimatedHeightForFooterInSection:section];
    return 0;
 }

 - (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section
 {
    if ([HVTableViewDelegate respondsToSelector:@selector(tableView:viewForHeaderInSection:)])
 return [HVTableViewDelegate tableView:tableView viewForHeaderInSection:section];
    return nil;
 }
 - (UIView *)tableView:(UITableView *)tableView viewForFooterInSection:(NSInteger)section
 {
    if ([HVTableViewDelegate respondsToSelector:@selector(tableView:viewForFooterInSection:)])
 return [HVTableViewDelegate tableView:tableView viewForFooterInSection:section];
    return nil;
 }

 - (void)tableView:(UITableView *)tableView accessoryButtonTappedForRowWithIndexPath:(NSIndexPath *)indexPath
 {
    if ([HVTableViewDelegate respondsToSelector:@selector(tableView:accessoryButtonTappedForRowWithIndexPath:)])
 [HVTableViewDelegate tableView:tableView accessoryButtonTappedForRowWithIndexPath:indexPath];
 }

 - (BOOL)tableView:(UITableView *)tableView shouldHighlightRowAtIndexPath:(NSIndexPath *)indexPath
 {
    if ([HVTableViewDelegate respondsToSelector:@selector(tableView:shouldHighlightRowAtIndexPath:)])
 return [HVTableViewDelegate tableView:tableView shouldHighlightRowAtIndexPath:indexPath];
    return YES;
 }
 - (void)tableView:(UITableView *)tableView didHighlightRowAtIndexPath:(NSIndexPath *)indexPath
 {
    if ([HVTableViewDelegate respondsToSelector:@selector(tableView:didHighlightRowAtIndexPath:)])
 [HVTableViewDelegate tableView:tableView didHighlightRowAtIndexPath:indexPath];
 }
 - (void)tableView:(UITableView *)tableView didUnhighlightRowAtIndexPath:(NSIndexPath *)indexPath
 {
    if ([HVTableViewDelegate respondsToSelector:@selector(tableView:didUnhighlightRowAtIndexPath:)])
 [HVTableViewDelegate tableView:tableView didUnhighlightRowAtIndexPath:indexPath];
 }
 - (NSIndexPath *)tableView:(UITableView *)tableView willDeselectRowAtIndexPath:(NSIndexPath *)indexPath
 {
    if ([HVTableViewDelegate respondsToSelector:@selector(tableView:willDeselectRowAtIndexPath:)])
 return [HVTableViewDelegate tableView:tableView willDeselectRowAtIndexPath:indexPath];
    return nil;
 }

 - (void)tableView:(UITableView *)tableView didDeselectRowAtIndexPath:(NSIndexPath *)indexPath
 {
    if ([HVTableViewDelegate respondsToSelector:@selector(tableView:didDeselectRowAtIndexPath:)])
 [HVTableViewDelegate tableView:tableView didDeselectRowAtIndexPath:indexPath];
 }
 - (UITableViewCellEditingStyle)tableView:(UITableView *)tableView editingStyleForRowAtIndexPath:(NSIndexPath *)indexPath
 {
    if ([HVTableViewDelegate respondsToSelector:@selector(tableView:editingStyleForRowAtIndexPath:)])
 return [HVTableViewDelegate tableView:tableView editingStyleForRowAtIndexPath:indexPath];
    return UITableViewCellEditingStyleNone;
 }
 - (NSString *)tableView:(UITableView *)tableView titleForDeleteConfirmationButtonForRowAtIndexPath:(NSIndexPath *)indexPath
 {
    if ([HVTableViewDelegate respondsToSelector:@selector(tableView:titleForDeleteConfirmationButtonForRowAtIndexPath:)])
 return [HVTableViewDelegate tableView:tableView titleForDeleteConfirmationButtonForRowAtIndexPath:indexPath];
    return nil;
 }
 - (BOOL)tableView:(UITableView *)tableView shouldIndentWhileEditingRowAtIndexPath:(NSIndexPath *)indexPath
 {
    if ([HVTableViewDelegate respondsToSelector:@selector(tableView:shouldIndentWhileEditingRowAtIndexPath:)])
 return [HVTableViewDelegate tableView:tableView shouldIndentWhileEditingRowAtIndexPath:indexPath];
    return NO;
 }
 - (void)tableView:(UITableView*)tableView willBeginEditingRowAtIndexPath:(NSIndexPath *)indexPath
 {
    if ([HVTableViewDelegate respondsToSelector:@selector(tableView:willBeginEditingRowAtIndexPath:)])
 [HVTableViewDelegate tableView:tableView willBeginEditingRowAtIndexPath:indexPath];
 }
 - (void)tableView:(UITableView*)tableView didEndEditingRowAtIndexPath:(NSIndexPath *)indexPath
 {
    if ([HVTableViewDelegate respondsToSelector:@selector(tableView:didEndEditingRowAtIndexPath:)])
 [HVTableViewDelegate tableView:tableView didEndEditingRowAtIndexPath:indexPath];
 }
 - (NSIndexPath *)tableView:(UITableView *)tableView targetIndexPathForMoveFromRowAtIndexPath:(NSIndexPath *)sourceIndexPath toProposedIndexPath:(NSIndexPath *)proposedDestinationIndexPath
 {
    if ([HVTableViewDelegate respondsToSelector:@selector(tableView:targetIndexPathForMoveFromRowAtIndexPath:toProposedIndexPath:)])
 return [HVTableViewDelegate tableView:tableView targetIndexPathForMoveFromRowAtIndexPath:sourceIndexPath toProposedIndexPath:proposedDestinationIndexPath];
    return nil;
 }
 - (NSInteger)tableView:(UITableView *)tableView indentationLevelForRowAtIndexPath:(NSIndexPath *)indexPath
 {
    if ([HVTableViewDelegate respondsToSelector:@selector(tableView:indentationLevelForRowAtIndexPath:)])
 return [HVTableViewDelegate tableView:tableView indentationLevelForRowAtIndexPath:indexPath];
    return 0;
 }
 - (BOOL)tableView:(UITableView *)tableView shouldShowMenuForRowAtIndexPath:(NSIndexPath *)indexPath
 {
    if ([HVTableViewDelegate respondsToSelector:@selector(tableView:shouldShowMenuForRowAtIndexPath:)])
 return [HVTableViewDelegate tableView:tableView shouldShowMenuForRowAtIndexPath:indexPath];
    return YES;
 }
 - (BOOL)tableView:(UITableView *)tableView canPerformAction:(SEL)action forRowAtIndexPath:(NSIndexPath *)indexPath withSender:(id)sender
 {
    if ([HVTableViewDelegate respondsToSelector:@selector(tableView:canPerformAction:forRowAtIndexPath:withSender:)])
 return [HVTableViewDelegate tableView:tableView canPerformAction:action forRowAtIndexPath:indexPath withSender:sender];
    return NO;
 }
 - (void)tableView:(UITableView *)tableView performAction:(SEL)action forRowAtIndexPath:(NSIndexPath *)indexPath withSender:(id)sender
 {
    if ([HVTableViewDelegate respondsToSelector:@selector(tableView:performAction:forRowAtIndexPath:withSender:)])
 return [HVTableViewDelegate tableView:tableView performAction:action forRowAtIndexPath:indexPath withSender:sender];
 }
 */

-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
    if (self.expandOnlyOneCell)
    {
        if (selectedIndexPath)
            if(selectedIndexPath.row == indexPath.row && selectedIndexPath.section == indexPath.section)
                return [HVTableViewDelegate tableView:tableView heightForRowAtIndexPath:indexPath isExpanded:YES];

        return [HVTableViewDelegate tableView:tableView heightForRowAtIndexPath:indexPath isExpanded:NO];
    }
    else
    {
        BOOL alreadyExpanded = NO;
        NSIndexPath* correspondingIndexPath;
        for (NSIndexPath* anIndexPath in expandedIndexPaths) {
            if (anIndexPath.row == indexPath.row && anIndexPath.section == indexPath.section)
            {alreadyExpanded = YES; correspondingIndexPath = anIndexPath;}
        }
        if (alreadyExpanded)
            return [HVTableViewDelegate tableView:tableView heightForRowAtIndexPath:indexPath isExpanded:YES];
        else
            return [HVTableViewDelegate tableView:tableView heightForRowAtIndexPath:indexPath isExpanded:NO];
    }
}

-(NSIndexPath *)tableView:(UITableView *)tableView willSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    return indexPath;
}

-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    // 更新代理,让外面的tableView也可以使用
    if (self.HVTableViewDelegate && [self.HVTableViewDelegate respondsToSelector:@selector(tableView:didSelectRowAtIndexPath:)]) {
        [self.HVTableViewDelegate tableView:tableView didSelectRowAtIndexPath:indexPath];
    }

    if (self.expandOnlyOneCell)
    {
        if (selectedIndexPath)
            if (selectedIndexPath.row != - && selectedIndexPath.row != -) //collapse the last expanded item (if any)
            {
                BOOL dontExpandNewCell = NO;
                if (selectedIndexPath.row == indexPath.row && selectedIndexPath.section == indexPath.section)
                    dontExpandNewCell = YES;

                NSIndexPath* tmp = [NSIndexPath indexPathForRow:selectedIndexPath.row inSection:selectedIndexPath.section];//tmp now holds the last expanded item
                selectedIndexPath = [NSIndexPath indexPathForRow:- inSection:];

                actionToTake = -;

                [tableView beginUpdates];
                [tableView reloadRowsAtIndexPaths:[NSArray arrayWithObject:tmp] withRowAnimation:UITableViewRowAnimationAutomatic];
                [tableView endUpdates];

                if (dontExpandNewCell) return; //the same expanded cell was touched and now I collapsed it. No new cell is touched
            }

        actionToTake = ;
        ///expand the new touched item

        selectedIndexPath = indexPath;
        [tableView beginUpdates];
        [tableView reloadRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationAutomatic];
        [tableView endUpdates];
        if (self.enableAutoScroll)
            [tableView scrollToRowAtIndexPath:indexPath atScrollPosition:UITableViewScrollPositionMiddle animated:YES];

    }
    else
    {
        BOOL alreadyExpanded = NO;
        NSIndexPath* correspondingIndexPath;
        for (NSIndexPath* anIndexPath in expandedIndexPaths) {
            if (anIndexPath.row == indexPath.row && anIndexPath.section == indexPath.section)
            {alreadyExpanded = YES; correspondingIndexPath = anIndexPath;}
        }

        if (alreadyExpanded)////collapse it!
        {
            actionToTake = -;
            [expandedIndexPaths removeObject:correspondingIndexPath];
            [tableView beginUpdates];
            [tableView reloadRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationAutomatic];
            [tableView endUpdates];
        }
        else ///expand it!
        {
            actionToTake = ;
            [expandedIndexPaths addObject:indexPath];
            [tableView beginUpdates];
            //            [tableView reloadRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationAutomatic];
            [tableView endUpdates];
            if (self.enableAutoScroll)
                [tableView scrollToRowAtIndexPath:indexPath atScrollPosition:UITableViewScrollPositionMiddle animated:YES];
        }
    }
}

/*
 // Only override drawRect: if you perform custom drawing.
 // An empty implementation adversely affects performance during animation.
 - (void)drawRect:(CGRect)rect
 {
 // Drawing code
 }
 */

@end

针对源码修改过的地方: