Develop Reference

How to fix this error which happens when eclipse program starts?

Recently, when I start eclipse program, always got below error. I did not see this issue before, seems the error started after I update the Android SDK. Could you please help?
I got some answers from here. They recommend me to uninstall some images from android sdk 5.1.1. I didn't install these images and even I cannot find them under 5.1.1 version as below.

delete this guy
the solution to above problem is to just delete(uninstall) the package Android Wear ARM EABI v7a system image available under Android 5.1.1 (API 22) if it's installed. (No need to uninstall whole 5.1.1 package). May be there is some eclipse bug with this package.
Finally restart eclipse to see your changes.
If the problem still exists, try removing other Android Wear package also (i.e Android Wear Intel x86 Atom System Image)

Android Studio NullPointerException (no error message) after grey screen/restart

I was programming in Android Studio, on MAC OS X macOS Sierra.
I was debugging code on one emulator, then I started next emulator with different phone. Then accidentally laptop restarted (with the grey screen https://i.kinja-img.com/gawker-media/image/upload/s--HPvl05ih--/c_scale,f_auto,fl_progressive,q_80,w_800/18mfougmh04injpg.jpg).
After boot everything come back, Android Studio too. But I can't debug my apps. I have
Error:java.lang.NullPointerException (no error message)
This happening everytime I try to run my app.
It is on my company project, from git. I tried different versions of code.
I tried also (with chronology):
reinstall Android Studio
reinstall SDK, Virtual Devices
reinstall Android Studio after completly delete it from Mac, using terminal (How to completely uninstall Android Studio?)
reinstall Java (uninstall with the tip from Java webpage (https://www.java.com/en/download/help/mac_uninstall_java.xml)
I don't know what I can do next besides reinstalling OS.
Thanks

Okay.
After that post I also tried cleaning cache, logs and again reinstall Java JDK. Nothing helped.
Unfortunately the only solution which helped - format and reinstall system.

Try File -> Invalidate caches / Restart... in android studio.

you must remove ".gradle" folder into your root project and restart your android
studio.

Android studio gets hanged at splash screen

I have installed android studio in windows10 as well installed jdk the installation process has gone smoothly but when the android studio opens it just stuck with the splash screen itself.
I have added the environment variable for the jdk but even it didn't works.The versions which i am using are as follows
JDK version is 1.8.0_101 and android studio version is 2.1 and i am using it in windows 10 and the path of the android studio is C:\Program Files.
Even i have ended the task in taskmanger and restarted mypc and opened android studio but it didn't works.Even i have uninstalled android studio and installed it again and run it as admin but even it shows the splash screen only.

You should have a proper Internet Connection while installing Android Studio. The studio needs a lot of file from net after installing. And try Deleting all files related to android from your c drive . Try installing now. Also dont forget Restart your PC after Uninstalling.. & try Updating Java files Too ..
Good Luck ..

Install again on different drive by deleting its loading and configuration files from AppData hidden folder too and also also given path.
path C:\Users\Sohail Zahid\.AndroidStudio2.1

First build with AndroidStudio failed

I'm new to android programming and I'd like to use Android Studio for the start. I downloaded and installed AndroidStudio 0.8.0 on my Ubuntu 14.04 machine. I also set up java properly.
When I create a new project (as told by http://developer.android.com/training/basics/firstapp/creating-project.html) it looks like it will try to build the sample files. But then I always get this error:
/home/daniel/AndroidStudioProjects/Heimweg/app/src/main/res/drawable-xhdpi/ic_launcher.png
Error:Error: Cannot run program "/home/daniel/android/android-studio/sdk/build-tools/android-4.4W/aapt": error=2, No such file or directory
Error:Execution failed for task ':app:mergeDebugResources'.
/home/daniel/AndroidStudioProjects/Heimweg/app/src/main/res/drawable-xhdpi/ic_launcher.png: Error: Cannot run program "/home/daniel/android/android-studio/sdk/build-tools/android-4.4W/aapt": error=2, No such file or directory
How can I deal with this error? When I try to run the app it says »ADB not responding. You can wait more, or kill "adb" process manually and click "Restart"«

The Android tools need 32-bit compatibility libraries installed. I had the exact same problem, and this worked for me:
sudo apt-get install libc6-i386 lib32stdc++6 \
lib32gcc1 lib32ncurses5 lib32z1
Then restart Android Studio.

It sounds like the SDK doesn't have all of the components installed!
To remedy this, in Android Studio go to Tools->Android->Android SDK Manager
I would install the Android SDK Tools, Android SDK Platform-Tools, and the Android 4.4 files (and the others as far back as you plan on developing for)
I hope this helps!
Here's some reference with pictures if you need further assistance: http://developer.android.com/tools/help/sdk-manager.html
EDIT:
I apologize! I should have read your error more carefully. It seems that android-4.4W refers to Android Wear.
Make sure when you are creating your project that you do not have Android Wear selected under the SDK selection screen (As shown below)
Alternatively you can also open up the Android SDK Manager again and install the Wear SDK.
In the SDK Manager it is under Android 4.4W (API 20), install the SDK Manager and the two System Images

Transfer eclipse and android SDK to new Computer

I have an good eclipse and ADT on it and everything is good. but i have to transfer it to my new computer and I m worry about reinstalling google and eclipse plugins again.
please help me to find a way for offline transfer of all my eclipse, plugins, android sdk and android emulator

for using in the same architecture and also the same OS, simply copy eclipse and sdk folders. if you want your emulators too, in linux, copy ~/.android folder too.