Android Studio - mergeDebugResources exception

Question

I recently updated the Android Studio to it s latest version  and now I am experiencing a headache with an exception in Gradle build   Every time I run the project  two or three times before it succeed  I get the following error   Gradle  Execution failed for task    ProjectName  mergeDebugResources   Java lang NullPointerException  no error message    After trying again a couple times  the error does not happen again until the next run   Does anybody have any idea of why this is happening  The project worked just fine  til the update  never got any error before     Thanks

User · Answer

I just upgraded to the latest gradle build tool version and it works    classpath  com android tools build gradle 3 0 1

User · Answer

It happens to me only when modifying the XML files on the project  If you rebuild the entire project before running  Build   Rebuild Project  it doesn t show up anymore

User · Answer

This would also happen if there is are any additional folder files in resource folder which are not supported by Android

User · Answer

You may have a corrupted  9 png in your drawables directory

User · Answer

My problem solve this one  compile fileTree dir   libs   include      jar      to  provided fileTree dir   libs   include      jar

User · Answer

It could be a faulty name of a drawable file   I had an image I was using that was named Untitled   Changing the name solved my problem

User · Answer

Had to change build tools version from some old one in build gradle for project module   android               buildToolsVersion  24 0 2

User · Answer

In my case none of above works  I have just renamed the project name  everything works well   Example   My project name Before -  sticky-headers-recyclerview-master  My project name After -  SHRV  Hope this will help you

User · Answer

I had the same problem and managed to solve  it simply downgrade your gradle version like this   dependencies       classpath  com android tools build gradle YOUR GRADLE VERSION      to   dependencies       classpath  com android tools build gradle OLDER GRADLE VERSION THAT YOUR      for example    YOUR GRADLE VERSION     3 0 0  OLDER GRADLE VERSION THAT YOUR     2 3 2

User · Answer

inside your project directory  run     gradlew clean build   or from Android Studio select   Build  gt  Clean Project   Updated  As  VinceFior pointed out in a comment below

User · Answer

I found a solution to the problem    There is an issue reported about gradle build problems  it is not the same  but the solution seems to solve the mergeResourceDebug issues too   issue here https   code google com p android issues detail id 56158   In the comments it is stated that the solution is solved in Gradle 0 4 3   To use Gradle 0 4 3  the build gradle file needs to be updated manually    Updating Android Studio does not change the build file    Here is what I changed In build gradle   dependencies       classpath  com android tools build gradle 0 4 3      Since changing this  I have not seen any more mergeDebugResource issues when running my project   Hope this helps   Edit  to stay up to date with Gradle you can change the version number to 0 4

User · Answer

There is a new Gradle task called  cleanBuildCache  just run this task clean the cache then re-build the project

User · Answer

This error could also happen if the generated build file path exceeds the windows max path length of 255 characters  Make sure your project path is not too long  use short names as well

User · Answer

In my case I just removed the space from project folder name From  MyApp latest  To  MyApp latest  and it worked

User · Answer

In my case  when I changed package name this issue appeared  I just followed below steps to fix my problem    Removed previously installed apk  uninstall  Applied project clean Run the app

[android] Android Studio - mergeDebugResources exception

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