Develop Reference

Android install external library

I want to use this library https://github.com/koush/ion in my project.But I don't understand how can I install it.I am using Windows 8 and Eclipse.How can I install ?

Download that project and put it in workspace of eclipse and import it from work space to eclipse and make it as library project and add it to your project.
Steps to import:
Right Click on package explorer
Import
Existing Project into Workspace
And then browse to the location where the project downloaded
Import it
Steps to add it as library to your project:
Right-click on your project -> Properties
In Android->Library section click Add
Select recently added project -> OK
That's it!
Now you can use it

You must perform the following steps:
Download ion project code.
Import it in your workspace using eclipse.
Right click in your current project and select Properties. The project properties windows must be opened.
Select Android option.
Go to the bottom of this tab and you can view the Library section.
Add the library dependency using the Add button.
I hope that helps!

You are probably better off downloading the jars vs the source.
https://github.com/koush/ion#get-ion
Download those two and place them in the "libs" directory of your project. If that directory does not exist, create it. From with your Eclipse project preferences, you can add those jars as dependencies.

Can't import an Android project that was cloned from GIT into an eclipse workspace

I want to be able to clone a project into my workspace, and than import it into Eclipse.
When I choose "Import"->"Import existing Android code into workspace", I get:
Invalid project description. [ProjectName] overlaps the location of another project: [ProjectName]
When I choose "Import"->"Existing projects into workspace" I get nothing to import (because I keep only the "res" folder, "src" folder and AndroidManifest.xml files in the git repo.
Any solution that involves copying the repo outside the workspace and importing it will not work since I want it to be cloned into my workspace.
How can I achieve what I'm trying to do?

First make sure you do not have a directory named [ProjectName] in your workspace. If so delete it. After several tries I would not be surprised that the assistant created it and therefore is not letting you import it because it thinks it exists.
Then, git clone the project outside of your workspace.
Finally, go to new->Android project from existing source, select the cloned directory and make sure you tick the box : Copy the files into workspace
That should work.
UPDATE AFTER COMMENT :
Ok, I didn't understand the part about the direct to workspace import.
I just tried and had no problem :
clone the github project inside the workspace
In Eclipse : Right click in the Package Explorer
Click "Import...",
Under the directory Android choose : "Existing Android code into workspace"
Browse to your project directory
Make sure not to tick the "Copy projects into workspace"
Click finish

How to include GitHub library to your existing Android project in eclipse

I want to include this library from github to my existing project, I am using eclipse.
Is there any tutorial on how to do this? I am new to android and java development so any step by step help would be great!
note:
I have an Egit plugin installed in eclipse.
Image of the screen when I try to Import the library from the unziped file I have downloaded from the github page:
Also after importing the library as suggested below a library folder created in my Package Explorer but here is what I get:
I have now the library in the eclipse Package explorer, and now I want to add it to my project, so I Right-Click on the existing project and choose properties. Under Android liabrary i click ok and choose the library than ok, nothing happens!

Right click on your project -> properties -> Android -> Add. There you can hose a library.

I got the same problem as yours, please check my answer here , hope it helps.

Extract the zip,
Right click in your workspace -> Import -> Android -> Existing Android Code Into
Workspace -> give path of that project/library
Done.

How to use Android-Wheel into my project

I have zip file of Android-wheel but dont know how to use it into my project.What possible things can i do, Please suggest me.

You need to unzip the zip file to some directory, and in your android project under build-path choose add external jar, and choose the jar in the unzipped directory.
Update:
I checked Android-Wheel out and you will have to import the project from the google-code svn Android Wheel. In eclipse if you go to create a new project there should be a import from svn option. Once you do and the project is imported you can set it up as a library project and then use it in your app. To do that right click on your project, choose the android tab, and choose add under the libraries section.

I just made this tutorial, hope this helps those who use android wheel for the first time.
http://tolkianaa.blogspot.mx/2012/03/do-not-try-to-reinvent-wheel.html

*Download project with Svn
*Import the project into Eclipse
* Once you import the project in the Eclipse, Right click on the project -> Properties -> Choose android tab and check the IsLibrary option
* Now Right click on your project -> Properties -> Choose android tab -> In the Library section add the imported project.

How to start an android project with downloaded sample code

I'm pretty new to android, and just finished setup my environment and reading some tutorials. Then I got sdk samples from the web. Okay, what I wanna ask you is that is there a way to start a sample as a project in the Eclipse? I mean like clicking a project file in c# or a solution file.
Here is my folder which I unzipped the code,
\android-sdk-windows\samples\android-8\NotePad
There are three folders and one file in the folder, \res, \src, \tests, and AndroidManifest.xml
Or, do I need to make a new android project and import (or add files? maybe) them?
Thanks in advance,
yokyo

#sgarman
I don't think that's a very good way of doing it. Sadly the 'Create Project from existing sample' feature you describe functions in such a way that when it creates a project from a sample it leaves you editing the source code in the actual SDK sample itself instead of a copy of the source imported into your Eclipse workspace.
This is problematic for a number of reasons including:
Once you've edited the new project you no longer have the original sample to refer to, which is the whole point of the samples in the first place.
If you want to hack a sample in several different ways you will want several copies of the sample, but again once you've edited the original sample you no longer have the original sample to make a copy from.
If the SDK is ever patched then when you update it you may end up overwriting your code.
In short it makes far more sense to treat the SDK as a readonly reference and not treat it as a sandpit in which to do your own messing around. So imo the best way to create an Eclipse project from a sample is do take a copy of the sample and put it somewhere else.
If you want the sample to not exist in your actual Eclipse workspace directory then this is very easy. Just copy the sample to a new location and inside Eclipse with your workspace open do New->Android Project and 'Create Project From Existing Source'.
If on the other hand you want to make the project inside your Eclipse workspace directory then there is a problem which is that if you just copy the sample code inside your workspace folder and do 'New->Android Project' and 'Create Project From Existing Source' for me at least it fails with the error "Invalid project description: c:\Users\usernamme\blah\blah\projectname overlaps the location of another project projectname". I don't know why, if you create a project from sample code using 'New->Java Project' it works just fine so I suspect there is a problem with the Android Project Eclipse plugin that is causing this to fail.
There is a way to get around this which is to first copy the sample code to a temporary location on disk that is outside of the workspace directory. Then use New->Android Project and 'Create Project From Existing Source' which turns the temporary copy of the sample code into a project but leaves it orphaned outside the workspace directory. Then delete the project from the workspace (but without deleting the project from disk). Then use Import->Existing Projects Into Workspace with the 'Copy Projects Into Workspace' checkbox ticked to copy the project into the workspace directory, before finally deleting the project from the temporary location.
But ultimately I decided to structure my workspace in such a way that projects are not inside the workspace folder like this:
Eclipse Workspaces
\
Android Projects
\
Workspace
Project 1
Project 2
Java Projects
\
Workspace
Project 1
Project 2
Other Projects
\
Workspace
Project 1
Project 2
In this layout the Android Projects, Java Projects and Other Projects directories are conceptually my workspaces but in reality in each case it is the nested Workspace folder which is the actual Eclipse workspace. This enables me to keep my projects contained within their respective pseudo-workspaces while not being inside their actual Eclipse workspace folder which neatly gets around the problem of not being able to easily create Android projects if the project directory is inside the Eclipse workspace directory.
Sorry that's all a bit long winded, but it's taken me ages to work out how to get this to work efficiently and I figure it might help someone.

From eclipse go to: File > New >
Project...
Select the Android Folder and pick
Android Project
Then in the Contents section at the
top click the "Create project from
existing sample" radio button. Once
you pick a target from the bottom
the drop down will become selectable
and your good to go.

Copy the downloaded project into your workspace
i.e space allocated for android project
Open the Eclipse
Choose File---> Import ---> Android --> Existing Android code into workspace
Choose Next
Click Browse
choose the foldername (downloaded)
click finish

If you are using ADT 20 then it's quite easy. Select New > Other...>Android Sample Project > [Select the platform from which you would like to pick the sample] > You must see the available samples, select the one you wish to open,you will see that in your workspace.

This may not be a definitive answer because I'm relatively new to Android as well (and come from more of a .Net background too).
When you create a new Workspace in Eclipse, you'll see a new folder created with the name of your workspace and a .metadata folder inside of it. I don't think there's a "workspace file" per se, so you don't double click anything to bring it back up. You just open to that workspace (by telling the Eclipse dialog what path to open).
As far as importing existing projects into a workspace, copy the whole folder into your workspace and click File - Import... - General - Existing Projects into Workspace. Click the Browse button to select the Root directory and it should default to the Workspace's main folder. Click OK and the project should show up in the dialog. Select it and click Finish

The code samples don't come with eclipse project files out of the box. There are a number of ways to create them but the easiest is probably this. From eclipse (with the android plugin installed), File -> New -> Project, Android Project, Next, select the "Create project from existing source" radio button and specify the location of the existing source. The project wizard should then find your manifest and fill out the rest of the information it needs automatically.

http://developer.android.com/samples/index.html
It states here:
"Using Android Studio
Unpack the downloaded project package.
In Android Studio, chose File > Import Project and select the root folder of the unpacked project.
Android Studio may ask you to choose the type of project you are importing. If this is the case, make sure to choose Import project from external model and select the Gradle option."
I hope this helps you.