polidea/tree-view-list-android

Provide configurable tree view list for android devices

Introduction

This is a small widget that provides quite configurable tree view list. It is based on standard android list view.

Note that using generic tree is probably not the best approach for Android (or any other mobile) UI. See http://developer.android.com/design/index.html for all the control that it makes sense to use. Thus tree view should be considered as deprecated.

The widget is fully configurable - with your custom adapter you can provide your own implementation of the item views - even completely different implementation of item views depending on the tree level you are at. Implementation follows best approach of Adapters from android so views at the same tree level are reusable.

Usage

The whole project can be included as external android library. After unsetting the "isLibrary?" flag, the project can also be compiled and installed on its own - providing demo application that presents capability of the widget. It shows how the tree behaves dynamically including explanding and collapsing nodes for many/all node, providing context menu for the tree, custom tree view with checkboxes only available for leaf nodes, custom colouring and different text sizes for text for different levels of the tree (albeit ugly) of the tree. The activity handling it is TreeViewListDemo.java, adapters used are SimpleStandardAdapter.java and extending it, colorful FancyColouredVariousSizesAdapter.java. Layout for tree items is defined in demo_list_item.xml. You can learn from the demo how to use the widget. The tree can be configured through XML layout file (attributes are defined in attrs.xml ).

tree-view-list-android's Issues

How to enable horizontal scroll if the treeview have many levels

If you see in the screen shot, if there are too many levels the data aligns to right with two lines and the last element even does not show..

Mini bug with link of Project.

Link from https://code.google.com/p/tree-view-list-android/ to https://github.com/Polidea/tree-view-list-android not correct.

Maven central

Hello.
Do you plan to share library as maven artifact?
Regards.

save state selected item (expand items open app)

How can I save the state of the selected items, so that when you open the application again, it seemed to me expo item?

can i show treeView in Horizontal like ? like sidebar folder structure in explore windows

hi thanks for awesome third-party library. i was read in isuue tracker #14 thats asking for show horizontal treeview. but, are in news version was support that ? thanks

NoClassDefFoundError when building demo app with Eclipse

Steps to reproduce:

• Use Eclipse Luna with ADT 23.0.6
• Open a new workspace
• Import the project as "Android Project from Existing Code"
• Run it as an Android Application

The app will build and launch, but immediately crash with a NoClassDefFoundError.

I have encountered this before in a different project, where changing the Java compiler compliance level from 1.6 to 1.7 solved it. The same approach works here, but requires targeting Android 4.4 (API 19), else the toolchain will complain.

Steps in detail:

• Go to Project Properties
• In Android, choose Android 4.4.2 (API 19) as the build target.
• In Java Compiler, set the compiler compliance level to 1.7.

With these, I was able to build and run the demo app.

Do you consider add animation to treeview

If that

How to remove all children, but not parent node

From [email protected] on May 26, 2014 13:46:21

What steps will reproduce the problem? 1.I use removeNodeRecursively, but this remove my node at all.

How to remove all children, but not parent node??

Original issue: http://code.google.com/p/tree-view-list-android/issues/detail?id=48

treeview inside horizontalScrollView not working !!

Hi,

Thanks for your great work on tree view.

I tried putting treeview inside HorizontalScrollView as I want the complete listview to scroll horizontally if the row item size is greater than parent view size. But its not scrolling. Somehow width of treeview is reduced. I have no idea why.

I tried putting simple listview inside horizontalScrollView and it worked out of box with desired result!

xml for reference :

<HorizontalScrollView   
    android:layout_height="fill_parent" 
    android:layout_width="fill_parent">

     <com.efi.selfserve.treeview.TreeViewList

       android:background="#333333"
       android:layout_marginBottom="50dp"
       android:layout_height="fill_parent" 
       android:layout_width="match_parent"
       android:id="@+id/mainTreeView" 
       treeView:indicator_gravity="right|center_vertical"
    android:listSelector="@drawable/list_selector_background"          
   />

    </HorizontalScrollView>

Thanks,

GraphView Height

This libraray is good i have used this and also custmize this according to requirement but the one thing that i am unable to correct is height of graph view. I want to show this graph view in dialogFragment and the height of fragment is wrapContent and height of graphView is also wrap content but it is still showimg on full screen. Any idea how can i reduce its height or how can i correct its height according to my graph.

Not working after Android Studio v1.2.0 update

Not working after Android Studio v1.2.0 update. Get the error: pl.polidea.treeview.TreeConfigurationException: Trying to add new id.. ..to top level with level != 0 (-1)

List item selector gets stuck in "pressed state"

Tested on the latest demo app, within the library project.
Device: Nexus 5
OS: Stock Android KitKat 4.4.2
When the list is scrolled while an item is pressed, the item remains in pressed state when the contact point moves out of it's boundaries.
Please see: https://vid.me/EcXn