Multiple entries with same key: 24.0.0 rc4=24.0.0 rc4

Question

After upgrade Android Studio to 2.2.3 it shows an error with:

IllegalArgumentException: Multiple entries with same key: 24.0.0 rc4=24.0.0 rc4 and 24

Answer 1

Had this occur recently after updating a few bits.

My solution was to open the Preferences in Android Studio, browse to Android SDK -> SDK Tools, you will most likely see multiple copies of 24.0.0 rc4 (one with a dash instead of a space in the version name) under Android SDK Build-Tools. Uninstall both copies by unchecking them, and then hitting Apply. Once uninstalled, the list should go back to showing only one 24.0.0 version called 24-rc4, install this and resync Gradle.

It might also help to change the buildToolsVersion in your Gradle files to 24-rc4.

Answer 2

Just go to folder ANDROID_SDK_LOCATION/build-tools and delete 24.0.0-preview (or another folders)

Or of course you can go over Android SDK Manager / Android Studio > SDK Manager > SDK Tools > Show Package Details and uncheck preview and older RC versions. This make the same action as just delete build-tools/24... folder.

Answer 3

this problem maybe android N preview and android N used same build version(24). So the mtrakal's answer is right. U can find build-tools has two 24.0.0 rc3 has installed.