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SecurityException: cannot find field for dex.jar android

Last night I upgraded to ADT-21 and restarted eclipse. Then eclipse said that you need to update the Android tool to version 21. I downloaded window_installer21 and installed it in the same place where my previous window_installer was installed. Therefore, it overwrites the file. Then I restarted the eclipse, and suddenly the whole project will stop working. Eclipse always opens with an error. SecurityException: Unable to find field for dex.jar

And when I try to start the project, it stops with the following error Unknown error: Unable to build: the file dx.jar was not loaded from the SDK folder!

SDK Manager also does not open.

I tried:

  • Clean up the whole project
  • Updated eclipse and computer about 20-30 topics.
  • Uninstall Android SDK, JAVA and reinstall it.
  • Setting path to find_java.bat file
  • Search after 6 hours over the Internet and read a specific form

This , this . this one too.

Nothing seems to work.

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8 answers

A pop-up window will appear warning about the need to upgrade to the latest sdk and open the corresponding tool. I tried this (several times - restarted every time) without effect.

Instead, the answer was ...

  • In eclispe, find the location of your Android sdk file (Window-> Preferences-> Android and the location of the SDK at the top of the page).

  • Close eclispe.

  • Locate sdk on the disk - and run the standalone SDK Manager.exe (it seems to work when you first open it, but wait a second or two to display gui). Note. This is the same gui that was previously opened by eclipse!

  • Take all updates as recommended. A dialog box appears indicating that the management tool itself has been updated and needs to be restarted.

  • Restart the tool - make all recommended updates and close.

  • Launch eclipse - the problem is gone!

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try installing fresh andoridSDK. the problem is the SDK, not your eclipse.

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Update your Android / sdk tool the latest and create a new workspace .it solved the problem for me

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You have the same error message, but the SDK manager works for you, run it with administrator rights and delete both packages in the Tools folder. Then install them again.

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I had a similar problem after installing the latest Android / Eclipse directly from the Android developer site. I also saw another error related to find_java, claiming that it could not find Java in c: \ windows \ system32 \ java.exe. I previously used the MOTODEV studio a year ago (since then it has not been touched). I was worried that this could cause a conflict, so I deleted it. However, he left a few pieces in my c: \ Users \ folder. I blew away some hidden directories related to Android, as well as the androidsdks directory that was installed there, and also blew away my workspace folder. Then I launched Eclipse / SDK Manager, and everything was right with the world :)

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Since I got this problem, I started using the Google ADT Bundle from http://developer.android.com/sdk/index.html
Now everything is all right.

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  • Update Eclipse Packages: Help > Check for Updates
  • Update Android SDK: Window > Android SDK Manager
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This is caused by the existence of an older version of dx.jar in VirtualStore (the folder in which windows store user versions of system and program files). Go to "C:\Users\<your user name>\AppData\Local\VirtualStore\<android-sdk path>" and delete all the contents or just the file "\platform-tools\lib\dx.jar" .

ie: if your username is "user32" and your Android SDK is placed in "C:\Program Files\Java\android-sdk" , after the upgrade you will probably have an outdated version of dx.jar in "C:\Users\user32\AppData\Local\VirtualStore\Program Files\Java\android-sdk\platform-tools\lib\"

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