How do I convert existing android project into gradle dependency so that it can be used in other project just by adding dependency to gradle file?
Create a library module.
Open the module-level build.gradle file.
Delete the line for the applicationId. Only an Android app module can define this.
At the top of the file, you should see the following:
apply plugin: 'com.android.application'
Change it to the following:
apply plugin: 'com.android.library'
Import the library module to your project (the library source becomes part of your project):
a. Click File > New > Import Module.
b. Enter the location of the library module directory then click Finish.
The library module is copied to your project, so you can actually edit the library code.
Make sure the library is listed at the top of your settings.gradle file, as shown here for a library named "my-library-module":
include ':app', ':my-library-module'
Open the app module's build.gradle file and add a new line to the dependencies block as shown in the following snippet:
dependencies {
implementation project(":my-library-module")
}
https://developer.android.com/studio/projects/android-library#Convert
I am using Android-Studio to build my app. In order to add libraries, I need to edit build.gradle file but I don't see it anywhere. Even if I changed files-view from android to project and vice-versa .
Why don't I see/have build.gradle ?
Check in your git repository if it contains the build.gradle files.
If not, you can just add manually to your project.
You should have something like this:
root
|--app
|----build.gradle
|--build.gradle
|--settings.gradle
You can also create a new blank project and copy the build.gradle files into your existing project (of course in the app/build.gradle file you have to change the values and the dependencies).
With huge help from #JuLes (commentting on my question) I figure out how to solve it. Here is what I did:
I totally removed Android-Studio following this guidance, then ...
I installed Gradle from this link, then ...
I re-installed Android-Studio following this link:
I am gussing the main problem was that I didn't installed Gradle manually and hence Android-Studio was using some sort of Gradle-Wrapper to allow the application to run.
Now, finally I can edit build.gradle.
BIG THANKS TO: JuLie
I'm trying to use mp4parser library in my project. My android studio version is 1.0.2. Here's what I've done so far:
I've downloaded mp4parser zipfile from the link: https://github.com/sannies/mp4parser
I've extracted the zip file to MyProjectName/app/libraries
Renamed the folder to mp4parser
Add this line of code to settings.gradle file:
include ':app:libraries:mp4parser'
Add this line of code to build.gradle (in dependencies block):
compile project('libraries:mp4parser')
Now I want to sync the project with gradle files. This error pops up:
Error:Configuration with name 'default' not found.
I don't have this problem with other libraries. Seems that its only mp4parser that I have problem with. How can I fix this?
If you're including the library as source, the best thing to do is to unpack it somewhere and import it as a module.
The error you're getting is cryptic but it means that the build system is looking for a build.gradle file at that location and not finding it (or it doesn't see an apply plugin statement in the file telling it what to do). I'm assuming that the library you're trying to use doesn't have a Gradle build script.
If you import the library using the Android Studio UI, a build script will be generated for the module and you should be good to go.
I tried via import module but I'm always getting
Error:(13, 0) Could not find property 'ANDROID_BUILD_MIN_SDK_VERSION' on project ':facebook'.
I didn't find a tutorial how to use the Facebook SDK with the latest Android Studio...
Using Facebook SDK 3.23 in Android Studio 1.1 preview 2
Two choices :
*Maven Repository for the Facebook SDK.
dependencies {
compile 'com.facebook.android:facebook-android-sdk:4.7.0'
}
check for the latest version facebook sdk
OR
*Follow the steps below:
1.Download facebook sdk
https://developers.facebook.com/docs/android/
2.Unzip the archive facebook-android-sdk-3.23.0
3.File menu->Import Module
4.Chose “facebook” folder inside the unzipped archive.
5.Go to directory facebook/build.gradle change this part
This:
compileSdkVersion Integer.parseInt(project.ANDROID_BUILD_SDK_VERSION)
buildToolsVersion project.ANDROID_BUILD_TOOLS_VERSION
defaultConfig {
minSdkVersion Integer.parseInt(project.ANDROID_BUILD_MIN_SDK_VERSION)
targetSdkVersion Integer.parseInt(project.ANDROID_BUILD_TARGET_SDK_VERSION)
}
To proper sdk version
example:
compileSdkVersion 21
buildToolsVersion '21.1.1'
defaultConfig {
minSdkVersion 14
targetSdkVersion 21
}
6.Click your project and press F4 ,go to 'dependencies' tab, click '+', 'module dependency' and select your imported facebook module.
7.Resync and rebuild
For anybody still wondering, there is finally an official Maven repo for the Facebook SDK:
dependencies {
compile 'com.facebook.android:facebook-android-sdk:3.20.0'
}
Write all those variables values in "gradle.properties" file.
Like
ANDROID_BUILD_TARGET_SDK_VERSION=19
ANDROID_BUILD_TOOLS_VERSION=19.1.0
ANDROID_BUILD_SDK_VERSION=19
ANDROID_BUILD_MIN_SDK_VERSION=14
You can follow this post https://stackoverflow.com/a/20221453/1232520
add these line in your gradle.properties it work for me!
ANDROID_BUILD_TARGET_SDK_VERSION=19
ANDROID_BUILD_TOOLS_VERSION=19.1.0
ANDROID_BUILD_SDK_VERSION=19
ANDROID_BUILD_MIN_SDK_VERSION=14
After do this plese follow step describe in this post https://stackoverflow.com/a/24457464/3296641
Now you can use version 3.21.1 from maven
https://developers.facebook.com/docs/android/
dependencies {
compile 'com.facebook.android:facebook-android-sdk:3.21.1'
}
You can now get Facebook SDK with gradle:
compile 'com.facebook.android:facebook-android-sdk:3.20.0'
Simply just go to project structure and select dependency
then click + on the right top corner and select library dependency (the first option ) and just type facebook or if you need any other lib and click a search icon (MAKE SURE YOU HAVE INTERNET CONNECTION) and select com.facebook.android:facebook-android-sdk:.... and you are good to go
EXPLINATION:
The following constants can be defined in your project gradle.properties:
ANDROID_BUILD_MIN_SDK_VERSION=15
ANDROID_BUILD_TARGET_SDK_VERSION=21
ANDROID_BUILD_TOOLS_VERSION=21.1.2
ANDROID_BUILD_SDK_VERSION=21
Those are used in the Facebook sdk as build gradle settings. To specify your use of the sdk. (it's encouraged that those values match your project values!).
"Code Reusability and Dependancy!" you can use those same values as gradle build settings in all build.gradle files for your project and all other modules inside your project. use them they same way they are used in the Facebook build.gradle file.
Example Benefit: Changing the minimum sdk version on gradle.properties will automatically change it for all your modules build.gradle.
You can get rid of the
"Error:(13, 0) Could not find property 'ANDROID_BUILD_MIN_SDK_VERSION'"
by replacing all the values like below
see your build.gradle . you can find all the properties and the versions your application is using. replace the values of 'buld.gradle file' from facebook sdk with the same versions.
android {
compileSdkVersion 19
buildToolsVersion "20.0.0"
defaultConfig {
minSdkVersion 8
targetSdkVersion 19
}
and for BOLT.JAR Error, there is a dependacy in facebook sdk build.gradle file like compile "files('../libs/bolts.jar')" this is actually for the whole sdk folder which we download, but as we use only facebook folder so we have one less directory path to follow.
Hence, you can get rean of one period before /libs so just remove it and keep it as compile files ('./libs/bolts.jar')
you are good to go !!
Add the compile dependency with the latest version of the Facebook SDK in the build.gradle file:
dependencies {
compile 'com.facebook.android:facebook-android-sdk:4.14.0'
}
For more info https://developers.facebook.com/docs/android/getting-started
For those who do not know where to put gradle.properties, it should go to the root of the project. This is how it looks in one of my projects.
I recently came across an error that was not resolved here yet. I tried to use the latest Facebook SDK from maven (by declaring compile 'com.facebook.android:facebook-android-sdk:4.6.0'). After gradle build I got no error and Android studio's static code analysis was also OK when declaring and writing FacebookSdk related code. However when I tried to run the code in the emulator, I got an error that facebook sdk is not included in the project. Then I tried some other hacks and then I finally removed the facebook entry from the gradle build file and tried to import it as a module, but that also did't work.
After a while when I was reading Facebook gradle file I realized that they are compiling the code with "sourceCompatibility JavaVersion.VERSION_1_7" flag. I used VERSION_1_8 flag because I wanted to use lambda's using retrolambda library. After I switched to 1.7 (and also adjusted the settings in File -> Project structure -> Source Compatibility) it started to work and there were no problems.
I quite don't understand why (and if) is this related together, but it probably is so be aware of that.
How do I create an Android Library Project (e.g. com.myapp.lib1) and the application project (e.g. com.myapp.app) and make the build system include com.myapp.lib1 on the application project?
I went to the Project Structure -> Modules -> My App project and added a dependency to the lib project. IntelliJ now can recognize classes from the lib project when used in the app project, but when I run the app project, there are errors like:
Gradle: error: package com.myapp.lib1 does not exist
I wonder why there is no example of stand alone jar project.
In eclipse, we just check "Is Library" box in project setting dialog.
In Android studio, I followed this steps and got a jar file.
Create a project.
open file in the left project menu.(app/build.gradle): Gradle Scripts > build.gradle(Module: XXX)
change one line: apply plugin: 'com.android.application' -> 'apply plugin: com.android.library'
remove applicationId in the file: applicationId "com.mycompany.testproject"
build project: Build > Rebuild Project
then you can get aar file: app > build > outputs > aar folder
change aar file extension name into zip
unzip, and you can see classes.jar in the folder.
rename and use it!
Anyway, I don't know why google makes jar creation so troublesome in android studio.
To create a library:
File > New Module
select Android Library
To use the library add it as a dependancy:
File > Project Structure > Modules > Dependencies
Then add the module (android library) as a module dependency.
Run your project. It will work.
Google’s Gradle Plugin recommended way for configuring your gradle files to build multiple projects has some shortcomings If you have multiple projects depending upon one library project, this post briefly explain Google’s recommended configuration, its shortcomings, and recommend a different way to configure your gradle files to support multi-project setups in Android Studio:
An alternative multiproject setup for android studio
A Different Way :
It turns out there’s a better way to manage multiple projects in Android Studio. The trick is to create separate Android Studio projects for your libraries and to tell gradle that the module for the library that your app depends on is located in the library’s project directory. If you wanted to use this method with the project structure I’ve described above, you would do the following:
Create an Android Studio project for the StickyListHeaders library
Create an Android Studio project for App2
Create an Android Studio project for App1
Configure App1 and App2 to build the modules in the StickyListHeaders project.
The 4th step is the hard part, so that’s the only step that I’ll describe in detail. You can reference modules that are external to your project’s directory by adding a project statement in your settings.gradle file and by setting the projectDir property on the ProjectDescriptor object that’s returned by that project statement:
The code one has to put in settings.gradle:
include ':library1'
project(':library1').projectDir = new File('../StickyListHeader/library1')
If you’ve done this correctly, you’ll notice that the modules referenced by your project will show up in the project navigator, even if those modules are external to the project directory:
This allows you to work on library code and app code simultaneously. Version control integration also works just fine when you reference modules externally this way. You can commit and push your modifications to the library code just like you can commit and push modifications to your app code.
This way of setting up multiple projects avoids the difficulties that plague Google’s recommended configuration. Because we are referencing a module that is outside of the project directory we don’t have to make extra copies of the library module for every app that depends on it and we can version our libraries without any sort of git submodule nonsense.
Unfortunately, this other way of setting up multiple projects is very difficult to find. Obviously, its not something you’ll figure out from looking at Google’s guide, and at this point, there’s no way to configure your projects in this way by using the UI of Android Studio.
Check out this link about multi project setups.
Some things to point out, make sure you have your settings.gradle updated to reference both the app and library modules.
settings.gradle: include ':app', ':libraries:lib1', ':libraries:lib2'
Also make sure that the app's build.gradle has the followng:
dependencies {
compile project(':libraries:lib1')
}
You should have the following structure:
MyProject/
| settings.gradle
+ app/
| build.gradle
+ libraries/
+ lib1/
| build.gradle
+ lib2/
| build.gradle
The app's build.gradle should use the com.android.application plugin while any libraries' build.gradle should use the com.android.library plugin.
The Android Studio IDE should update if you're able to build from the command line with this setup.
For Intellij IDEA (and Android Studio) each library is a Module. Think of a Module in Android Studio as an equivalent to project in Eclipse. Project in Android Studio is a collection of modules. Modules can be runnable applications or library modules.
So, in order to add a new android library project to you need to create a module of type "Android library". Then add this library module to the dependency list of your main module (Application module).
The simplest way for me to create and reuse a library project:
On an opened project file > new > new module (and answer the UI questions)
check/or add if in the file settings.gradle: include ':myLibrary'
check/or add if in the file build.gradle:
dependencies {
...
compile project(':myLibrary')
}
To reuse this library module in another project, copy it's folder in the project instead of step 1 and do the steps 2 and 3.
You can also create a new studio application project
You can easily change an existing application module to a library module by changing the plugin assignment in the build.gradle file to com.android.library.
apply plugin: 'com.android.application'
android {...}
to
apply plugin: 'com.android.library'
android {...}
more here
You can add a new module to any application as Blundell says on his answer and then reference it from any other application.
If you want to move the module to any place on your computer just move the module folder (modules are completely independent), then you will have to reference the module.
To reference this module you should:
On build.gradle file of your app add:
dependencies {
...
compile project(':myandroidlib')
}
On settings.gradle file add the following:
include ':app', ':myandroidlib'
project(':myandroidlib').projectDir = new File(PATH_TO_YOUR_MODULE)
Don't forget to use apply plugin: 'com.android.library' in your build.gradle instead of apply plugin: 'com.android.application'
Documentation Way
This is the recommended way as per the advice given in the Android Studio documentation.
Create a library module
Create a new project to make your library in. Click File > New > New Module > Android Library > Next > (choose name) > Finish. Then add whatever classes and resourced you want to your library.
When you build the module an AAR file will be created. You can find it in project-name/module-name/build/outputs/aar/.
Add your library as a dependency
You can add your library as a dependency to another project like this:
Import your library AAR file with File > New Module > Import .JAR/.AAR Package > Next > (choose file location) > Finish. (Don't import the code, otherwise it will be editable in too many places.)
In the settings.gradle file, make sure your library name is there.
include ':app', ':my-library-module'
In the app's build.gradle file, add the compile line to the dependencies section:
dependencies {
compile project(":my-library-module")
}
You will be prompted to sync your project with gradle. Do it.
That's it. You should be able to use your library now.
Notes
If you want to make your library easily available to a larger audience, consider using JitPac or JCenter.
Had the same question and solved it the following way:
Start situation:
FrigoShare (root)
|-Modules: frigoshare, frigoShare-backend
Target: want to add a module named dataformats
Add a new module (e.g.: Java Library)
Make sure your settings.gradle look like this (normally automatically):
include ':frigoshare', ':frigoShare-backend', ':dataformats'
Make sure (manually) that the build.gradle files of the modules that need to use your library have the following dependency:
dependencies {
...
compile project(':dataformats')
}
Purpose: Android library at single place - Share across multiple projects
http://raevilman.blogspot.com/2016/02/android-library-project-using-android.html
As theczechsensation comment above I try to search about Gradle Build Varians and I found this link: http://code.tutsplus.com/tutorials/using-gradle-build-variants--cms-25005
This is a very simple solution. This is what I did:
- In build.gradle:
flavorDimensions "version"
productFlavors {
trial{
applicationId "org.de_studio.recentappswitcher.trial"
flavorDimension "version"
}
pro{
applicationId "org.de_studio.recentappswitcher.pro"
flavorDimension "version"
}
}
Then I have 2 more version of my app: pro and trial with 2 diffrent packageName which is 2 applicationId in above code so I can upload both to Google Play. I still just code in the "main" section and use the getpackageName to switch between to version. Just go to the link I gave for detail.
There are two simplest ways if one does not work please try the other one.
Add dependency of the library inside dependency inside build.gradle file of the library u r using, and paste ur library in External Libraries.
OR
Just Go to your libs folder inside app folder and paste all your .jar e.g Library files there Now the trick here is that now go inside settings.gradle file now add this line "include ':app:libs'" after "include ':app'" It will definitely work...........:)
In my case, using MAC OS X 10.11 and Android 2.0, and by doing exactly what Aqib Mumtaz has explained.
But, each time, I had this message : "A problem occurred configuring project ':app'. > Cannot evaluate module xxx : Configuration with name 'default' not found."
I found that the reason of this message is that Android 2.0 doesn't allow to create a library directly. So, I have decided first to create an app projet and then to modify the build.gradle in order to transform it as a library.
This solution doesn't work, because a Library project is very different than an app project.
So, I have resolved my problem like this :
First create an standard app (if needed) ;
Then choose 'File/Create Module'
Go to the finder and move the folder of the module freshly created in your framework directory
Then continue with the solution proposed by Aqib Mumtaz.
As a result, your library source will be shared without needing to duplicate source files each time (it was an heresy for me!)
Hoping that this help you.