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Recently I updated Android SDK Tools, Android SDK Platform-tools, Android SDK Build-tools, and downloaded new APIs Android 4.4W and Android L (both API 20).

After restarting eclipse, it required me to also update the ADT from 22.x that I had to 23.x.

I went to Install New Software in eclipse and updated the ADT to 23.0.4.

After restarting, I figured out nothing in Eclipse is working properly:

  1. All the projects contains errors of several types:

    1. Unable to resolve target 'android-19' until the SDK is loaded.
    2. The type java.lang.Object cannot be resolved.
    3. The project was not build since its build path is incomplete.

  2. The Android SDK Manager won't open.

  3. When I write click on a project -> properties -> Android, there're no libraries and I can't add any.

Never seen something like that. I read that more people had problems after updating the ADT but none of the solutions worked. Thanks

Jjang
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  • click `Windows -> Preferences -> Android` make sure `SDK Location` is properly set – ashoke Oct 04 '14 at 22:00
  • It is properly set, but doesnt recognize any SDK. Everything worked perfect before the updates... – Jjang Oct 04 '14 at 22:28

3 Answers3

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Some hypotheses:

  • Broken Android SDK + tools installation. -- Can you open the Android SDK Manager and the emulator outside Eclipse? Consider reinstalling the SDK from scratch.
  • Eclipse can't find the Android SDK + tools installation. -- Check the ADT preferences in Windows > Preferences > Android. See this screen shot.
  • Broken ADT plug-in or its state. -- Try uninstalling ADT then reinstalling it.
  • Broken Eclipse installation. -- Consider reinstalling it from scratch. This could be a good time to update to the latest Eclipse (Luna).

Actually, this is a good time to try Android Studio. Right now your relative cost of switching is particularly low. Android Studio will take getting used to but it's slicker, does more work for you, and is the focus of Google's Android tool development. Android Studio is in beta testing but it's stable and usable.

Do watch the video What's new in Android development tools from Google I/O 2014.

See Google's notes on Troubleshooting ADT Installation.

There are more tips for fixing the ADT installation, e.g. Eclipse Indigo Android ADT - install OK, no "Android" option in Preferences and New Project but you can rule out most of those ideas since it used to work for you.

Maybe the fix on this Ubuntu forum post is relevant. There, an Ubuntu upgrade broke ADT because of the needed GEF plugin.

Community
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Jerry101
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  • Yes I can open Android SDK Manager outside from eclipse. Tried re-installing the ADT but nothing works. Could you specify step by step how to commit the other suggestions? – Jjang Oct 04 '14 at 22:20
  • OK. I added some more instructions. – Jerry101 Oct 04 '14 at 22:48
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To everyone which gets this problems in the future:

Do not try to struggle with it for hours, with frustrating solutions from the internet.

Simply re-installed eclipse, ADT and android SDK in about 30 mins and everything works perfect, finally.

Jjang
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    Agreed. The only down side is the time to reinstall all your plugins. Also if it turns out you have to start with a fresh workspace, then you'll have to restore all your settings and import your projects. – Jerry101 Oct 05 '14 at 22:18
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I am using adt-bundle-windows-x86-20140321, problem occured since updating java. But now problem already fixed after re-Extracting adt-bundle-windows-x86-20140321.

mkhoirul lathif
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