org.gradle.api.tasks.TaskExecutionException: Execution failed for task ':app:transformClassesWithDexForDebug'

Question

Due to 65K error in my project I need it to migrate to Android Studio . While running

./gradlew assembleDebug

I am

Answer 1

I have been struggling with this problem for 2 days. And tried all options. Finally noticed that after updating my android studio, it was not showing me the compile errors like @v.d. wrote above. My problem was, In my build files, I was using compile(which should be replaced with implementation or api) and testcompile(which also replaced by testimplementation). Notice that I have changed in whole build files(android, app and others - in my case I also had folding-cell library)

for example instead of this

compile project(path: ':folding-cell')

write this

implementation project(path: ':folding-cell')

Answer 2

My Simple Answer is and only solution...

Please Check The layout files, which you added lastly there MUST be a error in the .xml file for sure.

We may simply copy and pasting .xml file from other project and something missing in the xml file..

Error in the .xml file would be some of the below....

1. Something missing in Drawable folder or String.xml Or Dimen.xml...

After Placing all the available code in the respected folders do not forget to CLEAN The Project...

Answer 3

I had the same issue and I could solve it like this:

1) If your minSdkVersion is set to 21 or a higher value, the only thing you need to do is to set multiDexEnabled in your build.gradle file at the module level, as shown below:

android {
    defaultConfig {
        ...
        minSdkVersion 21 
        targetSdkVersion 28
        multiDexEnabled true
    }
    ...
}

2) However, if your minSdkVersion is set to 20 or less, you should use the MultiDex compatibility library, as follows:

2.1) Modify the module-level build.gradle file to enable MultiDex and add the MultiDex library as dependency, as shown below

android {
    defaultConfig {
        ...
        minSdkVersion 15 
        targetSdkVersion 28
        multiDexEnabled true
    }
    ...
}

dependencies {
  implementation 'com.android.support:multidex:1.0.3'
}

2.2) According to the Application class or not, do one of the following actions:

2.2.1) If you do not cancel the Application class, modify your manifest file to set android: name in the <application> tag as shown below:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.myapp">
    <application
            android:name="android.support.multidex.MultiDexApplication" >
        ...
    </application>
</manifest>

2.2.2) If you cancel the Application class, you must change it to extend MultiDexApplication (if possible) as shown below:

public class MyApplication extends MultiDexApplication { ... }

2.2.3) Also, if you override the Application class and can not change the base class, alternatively you can override the attachBaseContext () method and invoke MultiDex.install (this) to enable MultiDex:

public class MyApplication extends SomeOtherApplication {
  @Override
  protected void attachBaseContext(Context base) {
     super.attachBaseContext(base);
     MultiDex.install(this);
  }
}

Please use this link, it was really useful for me!

Answer 4

Well in my case i was accessing an static array of a class by reference of that class, but as we know we can directly access static member via class name. So when I replaced reference with class name where I was accessing that array. It fixed this error.

Answer 5

Add multiDexEnabled in gradle (app level) like this:

defaultConfig {
        ...
        ...
        multiDexEnabled true
    }

Answer 6

I have disabled Instant Run feature from the preferences and the issue was solved.