Using Gradle in Android Development - java

Im new to android development and ive seen some old tutorials before regarding its development on Eclipse. i recently download the new Android Studio to use for the development. However, i found something new called gradle files that are present in the projects folder along with the normal files that used to be in the project.
Everytime i try to run the app i get the following error:
"
Gradle:
FAILURE: Could not determine which tasks to execute.
* What went wrong:
Task 'assemble' not found in root project 'SampleProject'.
* Try:
Run gradle tasks to get a list of available tasks.
"
Could anyone please explain whats the use of gradle? and do i have to use it while developing android apps?
Thank you

Version 0.2.1 of Studio was just released and provides a better error. You should upgrade and see what happens, but it's likely that your project has another problem that should be fixed instead of randomly adding a task that shouldn't be added.

In your top directory file with name build.gradle just put:
task assemble {}
You can see it in known issues here
Get started with gradle here!
Edit: Android Studio 0.2.1 solves this error: http://tools.android.com/recent/androidstudio021released

Android Studio is bleeding edge (not yet beta).
For more stable solution use Eclipse with ADT, e.g. ADT-bundle http://developer.android.com/sdk/index.html
You can develop in Eclipse with ADT and run Gradle build using Nodeclipse/Enide Gradle for Eclipse
(marketplace)
Some screenshots for Gradle for Eclipse:

Related

Gradle Project Sync Failed - Android Studio 3.5.1

I should preface this by saying that I don't know much about programming or android app development at all. I am trying to get a program running to control my pool cover automatically. This program is fairly old, which I imagine is the reason for the issues. I have been following this guide to sign and bundle the APK. As soon as I clone the project from github, I am greeted with this:
ERROR: Could not determine the class-path for class com.android.tools.idea.gradle.project.sync.ng.SyncAction.
In addition to this, the "Generate Signed Bundle / APK button" is not available.
From what I can gather, this program uses Gradle 1.10.
Here is the complete output log that I got from android studio
I might have found a solution for your problem but being a project as old as this, you can have problems with library usages.
The reason you're seeing this error is, using info from this answer, because this project was written in Eclipse IDE. The answer says:
when Eclipse export a project to gradle, it use an old gradle plugin version that Android Studio doesn't support.
Following his instructions I changed my Gradle version to 2.3, but Android Studio showed some more errors asking me to upgrade my version to 3.3, as showed here in Project Structure (You can easily access this using Ctrl + Alt + Shift + S).
Notice that Android Studio also asked me to set my gradle plugin version to 2.3 on another error, that I did. You should be aware that I had to change my distributionUrl in gradle-wrapper.properties file, as you can see here
Lastly Android Studio demanded me to change buildToolsVersion because it couldn't make my app with original config. Also what gave me the most trouble was the runProgruard function that Studio said didn't exist. I found the solution in this answer. My app build.gradle ended like this.
PS: At EVERY step of changing this configurations I had to go to menu build->rebuild project and then use the gradle button "try again". Sometimes it might seems it is not working, but with patience you will get there.

Stuck at refreshing gradle project. What is happening under the hood?

I can not build any android project in Android Studio. Recently Android studio was updated to 2.3 as well as the gradle version. I think somewhere the update has messed up I am not sure where it is. I have deleted .gradle directory from the home folder several times by now. Changed the distributionUrl to older version of gradle. But the problem persists. Where to look at what is going on? How to solve this issue?
The reason behind taking too much time on refreshing gradle project is, it was downloading gradle distribution and each time and for some network issue the download was never being completed. The zip file for gradle distribution was 91MB. So the network error + slow internet connection made it impossible task for my Android Studio.
I found two solution for this:
First approach is we have to download the gradle distribution manually from services.gradle.org/distributions. Then follow the process of this answer of the question - Android Studio Stuck at Gradle Download on create new project.
Second approach is somewhat like the first approach but less complex. Download gradle distribution. Extract it somewhere. Then go to:
File > Settings > Build, Execution and Deployment > Gradle
Check Use local gradle distribution. Set the Gradle home to the folder we have extracted.
I had the same problem
What I have done is
1.Close your project
2.Delete folders of .idea , .gradle, gradle folders from my project(not from home). then
3.File=>open your project
press ok in the dialogue box it will automatically set the gradle for you.
or
You can specify gradle path
settings->build excecution deployment->build tools->gradle set your
gradle home path to your downloaded gradle
I faced this case because of slow internet, Each time while beginning with the project, it downloads the gradles taking more time.Finally refreshing complete after waiting for 10 minute.

libgdx first time user.Error in runnable 'Creating Gradle model'

So, I create a new project with libgdx (for desktop,android,iOS,html and at extensions,I got set Box2d.
I generate the project,all seems to be ok, but when I import the project in eclipse, it gives me this error:
Error title: Error in runnable 'Creating Gradle model'
Error message: org.eclipse.osgi.internal.framework.EquinoxConfiguration$1 See error log for details.
Anyone has any idea about this?
Once again ,I specify -it's my first time using this and I followed the documentation steps ,from libgdx's website. ( http://libgdx.badlogicgames.com/documentation.html )
I just had this exact problem you're having, and I found the solution elsewhere on this site:
Error at building model of new Gradle project for libgdx
It seems there's a current incompatibility between the latest release version of Eclipse (4.4.1) and the latest release version of the Gradle Eclipse plugin (3.6.1). This problem is reportedly fixed in the 3.6.2 development build of the Gradle plugin, so you could install the development build if you wanted, but being a development build who knows what else might be broken in it.
I opted for the solution outlined in the other question here, which was to add the following lines to the end of the eclipse.ini file for your Eclipse install:
-Dosgi.configuration.area.default=null
-Dosgi.user.area.default=null
-Dosgi.user.area=#user.dir
After I did this and restarted Eclipse, I was able to import my Gradle project.
Same problem happened with me,Here is how i resolve.
first of all it's quite easy.
[Follow 3 steps]
step 1: just connect to the internet and then click on build model.
step 2: It will start downloading a zip file.
step 3: After that restart eclipse.
enjoy coding...
:)
Create file local.properties in project's folder (one that you are trying to import)
in that file enter this:
sdk.dir=C:/path to my android/sdk
Then try to Build Model again.
It worked for me.

What steps do I need to take to convert my Eclipse Android project into a Gradle project?

I was wondering if it is an easy or worthwhile effort to convert my current Android project in Eclipse into a Gradle Project. Is there a generic build.gradle file I could start with that has common build tasks for Android? Would I just need to download a Gradle plugin for Eclipse or would I need to download Gradle by itself? Are there available tasks to run the project on a connected device like the Eclipse Android plugin can already do? Any input is appreciated.
Any project with build.gradle is Gradle project.
You can add build.gradle via File -> Export -> Android / Generate Gradle build file
or use build.gradle template for classic Android project check
gh.c/N/n-1/b/m/o.n.e.e.g/docs/android/build.gradle.
see http://www.nodeclipse.org/projects/gradle/ for info about Gradle support in Eclipse
Are there available tasks to run the project on a connected device like the Eclipse Android plugin can already do?
there is android-command plugin referenced in template.
Be aware that all Android-Gradle related is currently beta, including Android Studio.
I recommend to read docs well
http://tools.android.com/tech-docs/new-build-system
http://www.gradle.org/
I don't know of any standalone Gradle tools, but if you install Android Studios, and import your eclipse project, it elegantly converts it to Gradle for you. This is what I did.
If your target IDE is android studio.I use android studio 0.8.9 and from experience when I am moving my eclipse projects I simply go over to android studio,under the file menu and import the eclipse project.Android studio uses the latest version of the gradle plugin to do the job of proper conversion.Note:Make sure your gradle plugin option is turned on to work online.

How to install Android plugin into the Netbeans IDE?

How do you install NetBeans IDE the Android plugin? Is this link working or any alternative? http://kenai.com/projects/nbandroid/pages/Install
When i try i get failure:
Also this gives failure: http://kenai.com/projects/nbandroid/downloads/directory/archives or http://kenai.com/projects/nbandroid/downloads/download/archives/nbandroid-dev-2011-11-10_13-25-27.zip
SERVER ERROR
We're sorry, but something went wrong.
We've been notified about this issue and we'll take a look at it shortly.
I was using Netbeans for my JAVA project before, but when I started with Android I found it more useful to start with Eclipce. So if you not have to use NB, I recommend you to switch.
Kenai.com site no longer hosts these plugins. I recommend going to Install Plugins..|Settings | Add (Give it a name e.g. Android or NB)|Ok http://nbandroid.org/updates/updates.xml or if you're having a lazy connection download the plugins directly from http://nbandroid.org/downloads/ and add them from the Download tab and proceed as usual.
Android common library,
Android Core, Android Ddmlib,
AndroidPrefs, Android Project
SDK Library,
first only install these and then go for next it will work!!

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