RATreeView (iOS 5.0+)

Introduction

RATreeView is a class designed to provide easy and pleasant way to work with tree views on iOS. It works as a wrapper for the UITableView, defining its own delegate and data source methods which make working with tree data structures really easy.

RATreeView is highly customizable and has a lot of features.

Installation

CocoaPods

CocoaPods is the recommended way to add RATreeView to your project.

1. Add additional entry to your Podfile.

pod "RATreeView", "~> 1.0.3"

2. Install Pod(s) running pod install command.

3. Include RATreeView using #import <RATreeView.h>.

Source files

1. Downloaded the latest version of the library using link.
2. Copy content of the downloaded (and unzipped) zip file into your project by dragging it into Project’s navigator files structure.

Requirements

• Xcode 5
• iOS 5
• ARC
• QuartzCore

Usage

Check out the demo for example usage of library. Make sure you read the RATreeView documentation on Cocoa Docs.

Basics

1. Add following import in file of your project when you want to use RATreeView:

// In case you are using RATreeView with CocoaPods
#import<RATreeView.h>



// In case you are using RATreeView by simply copying 
// source files of the RATreeView into your project
#import ""RATreeView.h"

2. Simplest way to initialize and configure RATreeView:

RATreeView *treeView = [[RATreeView alloc] initWithFrame:self.view.bounds];
treeView.delegate = self;
treeView.dataSource = self;       
[self.view addSubview:treeView];
[treeView reloadData];

3. Implement required methods of the RATreeView’s data source:

- (NSInteger)treeView:(RATreeView *)treeView numberOfChildrenOfItem:(id)item
{
    return item ? 3 : 0;
}



- (UITableViewCell *)treeView:(RATreeView *)treeView cellForItem:(id)item treeNodeInfo:(RATreeNodeInfo *)treeNodeInfo
{
   // create and configure cell for *item*
   return cell
}



- (id)treeView:(RATreeView *)treeView child:(NSInteger)index ofItem:(id)item
{
   return @(index);
}

Documentation

Documentation is available on CocoaPods.

TODO

• Better delegate callbacks in case of recursive collapse and expand operations.
• Improved documentation.
• Unit tests.
• Re-order rows feature.

Author

RATreeView was created by Rafał Augustyniak. You can find me on twitter (@RaAugustyniak).

Release Notes

Information about newer versions of the library can be found in the releases section of the repository.

Version 1.0.2 - Fixed bug in select and deselect operations. - Fixed bug in recursive expand operation (via @Arrnas).

Version 1.0.1 - Fixed bug in recursive expand operation.

Version 1.0.0

• Improved performance.
• Added recursive expand operation. It can be performed by using expandRowForItem: expandChildren:withRowAnimation: method. Default behavior is non recursive expand.
• Added recursive collapse operation. It can be performed by using collapseRowForItem: expandChildren:withRowAnimation: method. Default behavior is non recursive collapse.
• Fixed bug in itemForRowAtPoint: method when passed point isn’t inside any cell.

Version 0.9.2

• Fixed bug in endUpdates method.

Version 0.9.1

• Fixed behaviour of treeView:willSelectRowForItem: delegate method.

Version 0.9.0

• Added possiblity to change content of the RATreeView dynamically. Possible row operations:
  • additions
  • deletions
  • repositions
• Added additional ‘cell accessing’ methods.
• Removed RATreeNodeInfo class.
• Added additional instance methods in RATreeView which substitute functionality provided by RATreeNodeInfo class.
• Bug fixes.

License

MIT licensed, Copyright © 2014 Rafał Augustyniak, @RaAugustyniak