Develop Reference

opentok-android-sdk-ui sample app not working

I downloaded opentok/opentok-android-sdk-ui application for text-chat from github.
I open this app in android studio. After compilation of application, it gives compilation error.That is,
Error:Failed to resolve: :opentok-android-sdk-ui-1.0:
In Build.Gradle file it defines dependencies like this
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
compile 'com.android.support:appcompat-v7:21.0.3'
compile (name: 'opentok-android-sdk-ui-1.0', ext:'aar')
}
How could i resolve this issue? Please Help me.

You must find opentok-android-sdk-ui-1.0.aar file in opentok-android-sdk-ui-1.0/text-chat/build/outputs/aar. What you need to do is, Open Android Studio, go to File>Import Module> select the aar file from the directory. You will see that a module is created in your workspace. Now, in the project text-chat-sample, open app/build.gradle file and instead of this line
compile (name: 'opentok-android-sdk-ui-1.0', ext:'aar')
write:
compile project(':opentok-android-sdk-ui-1.0')

Android support-v4 library being added with appcompat-v7

In my build gradle file I have two dependencies (appcompat-v7 and design) and then whatever externar jar files I add to the project
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
compile 'com.android.support:appcompat-v7:22.2.1'
compile 'com.android.support:design:22.2.1'
}
Is it normal to find in the project libraries (Project structure -> Libraries) the external jar files, appcompat-v7, design-22.2.1, support-v4 and support-annotations-22.2.1, I don't understand why the two last ones are being added, I think they're the cause of another issue I'm having (dexDebug).
Would anyone know if that is normal ?
Thanks

Running ./gradlew -q app:dependencies shows that com.android.support:appcompat-v7 depends on com.android.support:support-v4, so that is why it is pulled in. You will have to find a separate solution for your dex debug issue.

Android Studio - MavenCentral dependency sync ok, but symbol cannot be resolved

So, I managed to create an Android library component and publish it on Maven Central. But when I'm trying to use it as a dependency in a new project, Android Studio can't seem to find the classes.
build.gradle for the app module:
repositories {
mavenCentral()
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
compile 'com.android.support:appcompat-v7:21.0.3'
compile 'no.hyper:libdateintervalpicker:1.0.0' //this is the one I want to use
}
This part seems to work, at least I get no sync errors. However, when trying to access to package and classes from my MainActivity, Android Studio can't find them and gives me "cannot resolve symbol" message.
I have tried downloading the classes.jar from the archive directly from Maven Central, and they are indeed in the package.
Other dependencies seem to appear in the /build/intermediates/exploded-aar folder after syncing, but that does not happen to my library.
I use Android Studio 1.0.2 on OSX 10.9.5 (Mavericks)
Any suggestions?

Looking in your pom, it states <packaging>aar.asc</packaging>. It should be aar instead.

Oh, and the answer to actually being able to use the library, was to add #aar to the dependency so that it now reads
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
compile 'com.android.support:appcompat-v7:21.0.3'
compile 'no.hyper:libdateintervalpicker:1.0.0#aar' //note the magic #aar
}
Edit:
Removing the block
configurations {
archives {
extendsFrom configurations.default
}
}
makes Gradle generate the pom with the correct packaging entry, and thus makes it possible to reference the dependency without the #aar suffix

Android Studio with Gradle incompatibility (Google Play Services issue)

I am developing an android app with Android Studio 0.8.9. I am using Gradle to build my project.
I want to include google-play-services.jar file into my project in order to use push notification api.
I have added those statements into my gradle (application layer) file as follows:
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
compile files('libs/google-play-services.jar')
compile files('libs/android-support-v4.jar')
compile files('libs/gson-2.2.3.jar')
compile files('libs/volley_23042014.jar')
compile 'com.google.android.gms:play-services:5.2.08'
}
but it never works. I get the following error:
Multiple dex files define Lcom/google/ads/AdRequest$ErrorCode;
I've checked bunch of websites (including Stackoverflow.com). None of them has worked for me.
I have latest versions of Google Support Library, Google Support Repository, Google Play Services.
Here is my libs directory
My SDK version like:
<uses-sdk
android:minSdkVersion="14"
android:targetSdkVersion="20" />
What I have done wrong? If anyone has any idea please let me know.

If you're including Play Services via:
compile 'com.google.android.gms:play-services:5.2.08'
you don't need this:
compile files('libs/google-play-services.jar')
so just remove it.
Since the first line of your dependencies will make it automatically pick up any jar files you put in your libs directory:
compile fileTree(dir: 'libs', include: ['*.jar'])
make sure you remove the jars from there as well.
For that matter, there are other libraries you shouldn't include via specific jars.
Instead of this:
compile files('libs/android-support-v4.jar')
compile files('libs/gson-2.2.3.jar')
use this:
compile 'com.android.support:support-v4:20.0.0'
compile 'com.google.code.gson:gson:2.2.3
(Note that later versions of GSON are available).

error: package com.facebook.android does not exist in android studio project

I am new to android studio.I am developing an app which uses Facebook SDK.I have downloaded Facebbok SDK and imported it as a module to my android project.I am using latest version of android studio.So I simply imported it and did not make any change in other files for this.First I am trying to use facebook login functionality.But when I build the app I am getting following error.
error: package com.facebook.android does not exist
I could see one solution as an answer to someone's question. But i could not understand it.Please somebody help me.

check you build.gradle
it should got this dependency
if you got library project:
dependencies {
compile project(':facebook');
}
if you got jar files in libs folder:
dependencies {
compile fileTree(include: ['*.jar'], dir: 'libs')
}
or just add maven central dependency to:
dependencies {
compile 'com.github.asne.facebook:facebook:3.17.2'
}

You need to add dependencies on your gradle file :-
compile 'com.facebook.android:facebook-android-sdk:4.1.0'
above is path you need to add dependencies {} like below :-
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
compile 'com.android.support:appcompat-v7:22.0.0'
compile 'com.facebook.android:facebook-android-sdk:4.1.0'
}

Is the facebook library is jar file or library project?
If is jar file, you just need to add jar file in libs folder and dependencies {
compile fileTree(dir: 'libs', include: '*.jar')
} in build.gradle.
If is library project, you should modify your setting.gradle and build.gradle files.

Adding this line of code to the dependencies in the build.gradle file helped me get rid of the same error.
dependencies {
...
compile 'com.facebook.android:facebook-android-sdk:4.0.0'
}
From platform=android facebook developers
-the last line of the section "Add Facebook SDK to Your Project")