Develop Reference

How do I know that I've imported a jar properly in AndroidStudio project

I'm trying to use a third party library in AndroidStudio and am having some problems, it is the JSch library.
What I did was download the ".jar file
On my app within Module Settings I added it
And then selecting the app module again I added it within the dependencies
Yet when I try to code it into my files through "import com." it does not show.
I am too new at this to know if I added it incorrectly or if it has a problem within the ".jar" file.
Does this ring a bell with anyone who might know what I am doing wrong?

Just follow this steps:
1.- Put the jar into the libs folder
2.- Right click it and select "Add as library"
3.- Check that your build.gradle file contains:
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
}
You'll provably need to do a clean build

Add library to yours app dependencies:
dependencies {
// Other libraries...
compile group: 'jsch', name: 'jsch', version: '0.1.29'
}
And synchronize your gradle.

How to integrate MoPub inside a shared library in Android Studio

I need to integrate MoPub inside an android library shared by 3 different games.
I tried to use the fabric plugin with no success... after some attempts I get this error:
Error:Failed to resolve: com.mopub.volley:mopub-volley:1.1.0
Then I also tried to follow this guide that you can find here (https://github.com/mopub/mopub-android-sdk/wiki/Getting-Started) but I always get some errors (I can't execute the gradle command via terminal or I get the same error as mentioned above).
Can someone help me?
Thank you,
Mirko
UPDATE
Thanks to #Edward I was able to import correctly mopub-sdk in my project.
In order to fix the mopub-volley error, first clean the solution, read which files are missing in the console, look at the path, recreate the indicated path and add mopub-volley-1.1.0.jar, mopub-volley-1.1.0.pom in that folder.
Rebuild and you are ready to go!
In my case, mopub-sdk was looking for the mopub-volley lib inside an
inexistent folder in the same path of the android sdk.
If you get another error related to the millenial sdk, add this line in the dependencies section of the build.gradle file inside the mopub-sdk library:
compile fileTree(dir: 'libs', include: ['*.jar'])
you should get something like this:
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
compile 'com.android.support:support-v4:22.0.0'
compile 'com.android.support:support-annotations:22.0.0'
compile 'com.mopub.volley:mopub-volley:1.1.0'
}
Hope this can help you!

Go download the MoPub SDK.
Unzip and you will get a mopub-sdk folder
Navigate to your ‘Project location’, go into your project folder, and drop the unzipped mopub-sdk into the folder.
Navigate back to Android Studio and open your project's settings.gradle file and include the MoPub SDK as a module as shown below. You may need to sync Gradle again in Android Studio to have the ‘mopub-sdk’ show up in the left Project window.
include ':app', ':mopub-sdk'
Open your project's build.gradle file and add jcenter as a repository and the MoPub SDK as a dependency:
repositories {
jcenter()
}
...
dependencies {
compile project(':mopub-sdk')
...
}

For those late to the party:
repositories {
jcenter()
}
dependencies {
compile('com.mopub:mopub-sdk:4.8.0#aar') {
transitive = true
}
}
just make sure you've added jcenter() in the your repositories. fabric does not do this automatically for some reason

It looks like there is no mopub-volley lib into mavencentral or jcenter
So tou can try to use
compile 'com.mcxiaoke.volley:library:1.0.18'
instead of
compile 'com.mopub.volley:mopub-volley:1.1.0'
It helps for me.

Adding Parse-1.8.0 to Android Studio 1.0.1 (Or any .zip file)

So there seems to be a few threads that attempt to explain how to add .zip files to android studio but I am making no progress. I am migrating from eclipse so perhaps that is why I am so incompetent in figuring out how to perform this task. Can someone please explain how to add external libraries to Android Studio v1.0.1? In eclipse it was simply importing jar/zip and done.

I was in the same situation, trying to integrate Parse 1.8 with Android Studio 1.0.2.
On Parse's instruction page, it simply tells you to import the library into Android studio, which isn't too detailed. Here is how I solved this problem.
Choose to import from a "Non Android Studio Project", right when Android Studio starts.
When it asks you to choose the project, give the path, on Windows e.g.C:/path/to/parsesdk/. On *nix systems, it should be to where you have extracted to it, /home/user/path/to/parsesdk.
After you choose the path, Android Studio will import the project accordingly.
Click on the Application root folder (the top most folder in the folder hierarchy to the left), right click > New > Package > and add it under the src folder, name is libs.
Copy paste the jar to the libs folder (I only copied the jar file, as I didn't need the other extra material)
Right click on the jar, there should be an option labeled as "Add as library" towards the bottom, click on that.
Android Studio will automatically add the following to the build.gradle file.
compile files('src/libs/Parse-1.8.0.jar')
Once the above step is completed, click on File > Project Structure.
On the left, there should be a section called "Modules", click on the "Dependencies" tab on the top.
Click the green "+" sign > Module Dependency
Select the module from the list.
Last thing, in the build.gradle file for the "ParseStarterProject" module, if there is a red line under the classpath, change it to the following
dependencies {
classpath 'com.android.tools.build:gradle:1.0.0'
}
After completing this step, I was able to successfully build the app.
Hope this helps :)

If you are using gradle with android studio (which is the preferred way now) you can include jars in a folder using this code snipet from my build.gradle.
buildscript {
repositories {
flatDir { dirs 'c:\\path\\to\\folder' }
mavenCentral()
}
}
Or by including a single file in depencies like below.
dependencies {
compile fileTree(dir: 'a-folder-in-root-of-project', include: 'a_jar.jar')
}

This is the only way it worked for me :
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
//Parse
compile 'com.parse.bolts:bolts-android:1.+'
compile files('libs/Parse-1.9.2/Parse-1.9.2.jar')
compile files('libs/Parse-1.9.2/ParseCrashReporting-1.9.2.jar')
compile files('libs/Parse-1.9.2/ParseFacebookUtilsV3-1.9.2.jar')
compile files('libs/Parse-1.9.2/ParseFacebookUtilsV4-1.9.2.jar')
compile files('libs/Parse-1.9.2/bolts-android-1.2.0-javadoc.jar')
compile files('libs/Parse-1.9.2/bolts-android-1.2.0.jar')
}
OR
//Parse
compile 'com.parse.bolts:bolts-android:1.+'
compile fileTree(dir: 'libs/Parse-1.9.2', include: 'Parse-*.jar')
compile fileTree(dir: 'libs/Parse-1.9.2', include: 'ParseCrashReporting-*.jar')

How to Import jar file into an Android project?

I am trying to use the loopj library in my Android project. In the project home page it says "Download the latest .jar file from github and place it in your Android apps libs folder". I did that!
As indicated in the documentation of the loopj I try to import it using the following
import com.loopj.android.http;
and nothing happens. It is not even coming up in intellisense.
Am I doing anything wrong?

in the build.gradle file add your jar such as below then rebuild.
dependencies {
compile files('libs/android-async-http-1.4.4.jar')
}

into the build.gradle file add the following::
dependencies {
// ... other dependencies
compile files('libs/<your jar's name here>')
}
Rebuid your project or Run ./gradlew assemble. This should compile the project with the library.

To let the Android Studio load all of your jar files by itself automatically, just write this line in the dependency section
compile fileTree(dir: 'libs', include: ['*.jar'])
This will help android studio to load all of your jar files available in libs folder.

Best way to add dependency for Wire using Gradle in Android Studio

I'm using Square's Wire library for my Android app, using Android Studio with Gradle.
I originally added the wire-runtime-1.2.0.jar into a libs folder in my module, and added the dependency to Gradle like this in my build.gradle file:
dependencies {
compile fileTree(dir: 'libs', include: '*.jar')
}
That worked fine.
I'm new to Gradle and Android Studio, but based on the way I'm depending on the Google Support and Play Services libraries, I thought I might be able to remove the wire-runtime-1.2.0.jar library from my repository and just declare a dependency like this (the line is from the Maven repository):
dependencies {
compile 'com.squareup.wire:wire:1.0.0'
}
But if I do that then I hit this error:
Gradle: package com.squareup.wire does not exist
Is there a way to set up this dependency without importing the JAR file directly? Or does that only work for libraries that you can install through the SDK Manager?

Some packages, like com.squareup.wire, have multiple artifacts in Maven Central. You need to choose the right one for your needs. In this case, the equivalent of wire-runtime-1.2.0.jar is the wire-runtime artifact, not the wire artifact.
Here's what your dependencies section should look like:
dependencies {
compile 'com.squareup.wire:wire-runtime:1.2.0'
}