Develop Reference

How can I create own gradle dependency in android studio?

For developing android applications by using Android Studio, generally we add dependencies in build.gradle instead of adding jars or libraries.
Example given below
compile 'com.github.bumptech.glide:glide:3.7.0'
compile 'com.android.support:recyclerview-v7:25.3.1'
compile 'com.android.support:appcompat-v7:25.3.1'

How can i create own gradle dependency in android studio?
You have to publish your library on JCenter. You can find steps of publishing it on Google.

Support library only using latest versions

About Android support library, since 25.0.1 has some bugs, so I want to use 7.24.1,
here's some of my gradle codes
compile 'com.android.support:recyclerview-v7:24.2.1'
compile 'com.android.support:appcompat-v7:24.2.1'
compile 'com.android.support:cardview-v7:24.2.1'
compile 'com.android.support:design:24.2.1'
compile 'com.android.support:support-v4:24.2.1'
But I find the project still refers the latest version; the version number "v7:24.2.1" does not work.
I want use 7:24.2.1, but when I click any Android support class, such as RecyclerView, it opens source code from sdk\extras\android\m2repository\com\android\support\recycler‌​view-v7\25.0.0\recyc‌​lerview-v7-25.0.0-so‌​urces.jar

Clean Project will do the trick. Furthermore consider to change compileSdkVersionto24 and also install Android SDK Build-tools in Android SDK Manager.
As the latest version of the support library according to the support library changelog is v7:25.0.1 and not v7:24.2.1 modify your build.gradle to have v7:25.0.1:
compile "com.android.support:appcompat-v7:25.0.1"
However, if you really need v7:24.2.1 then simply put:
compile 'com.android.support:cardview-v7:24.2.1'
compile 'com.android.support:design:24.2.1'
You dont have to put the rest. They are already included as stated by cricket_007.

It turns out one of the depencencies include the android suppoert library25.0.0，
I solve it by downgrading the depencency library

Migrate from Eclipse to Android Studio import libraries

I'm trying to migrate an Android project developed with Eclipse ADT to Android Studio. I've already read the instructions mentioned here http://developer.android.com/sdk/installing/migrate.html and it works fine!
Gradle builds a new android project but I need to "hardcode"(modify manually) the gradle.build file in order to make the libraries work properly. All the other stuffs work fine.
This is the ADT project
MyApplication/
-->assets/
-->libs/
---->android-support-v7-appcompat.jar
---->android-support-design.jar
-->res/
-->src/
-->AndroidManifest.xml
-->project.properties
The first library is automatically recognized by Gradle, and it is substituted with
compile 'com.android.support:appcompat-v7:23.2.1'
in the grandle.build file.
Instead the "android-support-design.jar" is not recognized and it is added to the gradle.build as
compile file('libs/android-support-design.jar')
but it is not working at all.
At the moment, I need to manually substitute the
compile file('libs/android-support-design.jar')
with
compile 'com.android.support:design:23.2.1'
In order to make the build work effectively.
Is there any way to force Gradle to recognize that library and automatically import it? Can I download a version of that library that is recognized, anywhere? At the moment I'm taking both libraries from
<sdk>/extras/android/support/
Thank you all.

I need to "hardcode" the gradle.build file in order to make the libraries work properly
I'm not sure what you mean by "recognize" and "hardcode", but if you just have jar files that you can't use the compile line like for the support libraries, then you can use this line, which will take any jar file in the libs/ folder and compile it. You don't need to hard-code any of those.
compile fileTree(dir: 'libs', include: ['*.jar'])
Otherwise, you should already have these.
compile "com.android.support:appcompat-v7:23.2.1"
compile "com.android.support:design:23.2.1"
But, if you want to get fancy with Gradle, you can do something like this to keep all the support libraries the same version.
ext {
supportLibVersion = '23.2.1' // variable that can be referenced to keep support libs consistent
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
compile "com.android.support:appcompat-v7:${supportLibVersion}"
compile "com.android.support:design:${supportLibVersion}"

How can i use the build.gandle on xamarn?

I work with Android and I use some libraries on dependencies (build.gandle).
example:
dependencies {
compile fileTree(include: ['*.jar'], dir: 'libs')
testCompile 'junit:junit:4.12'
compile 'com.android.support:appcompat-v7:23.2.0'
compile 'info.hoang8f:fbutton:1.0.5'
compile 'com.nineoldandroids:library:2.4.0'
compile 'com.daimajia.easing:library:1.0.1#aar'
compile 'com.daimajia.androidanimations:library:1.1.3#aar'
compile 'com.android.support:support-v4:23.2.0'
compile 'com.google.android.gms:play-services-ads:8.4.0'
}
I'm new in xamarin development and I wanna know if there something which i can use my android libraries on xamarin
thank you

I think you can make use of Xamarin.GradleBindings, Visual Studio extension, creates Xamarin Android Binding projects from external dependencies ids via gradle.
How do java developers add dependencies to their projects? Yes that's right, via gradle (something like this or that). As you can see some java-projects use those dependencies a lot (all you want to write is already written) so it'd be nice to use those huge amount of 3rd party libraries in your Xamarin project, right? I believe this Add-in for Visual Studio 2013 (and lately for Xamarin Studio) will help you with it:
Step 1: Execute the command over "References" folder
Step 2: Set an external dependency id and a name for Xamarin Android Binding Project (will be generated). This dialog will allow you to specify custom repositories as well soon.
The Plugin executes gradle scripts and receives dependencies list (including transitive ones). At this step you can select or deselect needed binaries (transitive dependencies are deselected by default).NOTE: you'd better use "Xamarin Components" or directly NuGet for Support dependencies(v4, RecyclerView, AppCompact, etc..).
Step 3: The binding project will be generated but you still may have to fix some issues via Metadata.xml because the Add-in is not smart enough.
Step 4: Now you are ready to use them! i.e. the Material Dialogs:
Reference :
https://visualstudiogallery.msdn.microsoft.com/3a3257c7-473a-4790-9610-9a561eed0b8c
https://github.com/cfraz89/xamarin-gradle-plugins

Use android support v7 library classes in my library

I add android.support.v7.appcompat library in my project but I am not able to use this library class and methods in it. I have done it again and again but same problem exist any one please help me.

try adding this in your app gradle dependencies:
compile 'com.android.support:appcompat-v7:22.2.0'
for the design compile this:
compile 'com.android.support:design:22.2.0'