Execution failed for task ':app:transformClassesWithJarMergingForDebug

Question

I am created an android app & is running above API level 21. But not running on below API level 21.

Here is error log:

Error:Execution failed for task

Answer 1

First Compile the build with

compile 'com.android.support:multidex:1.0.1'

In Your AndroidManifest.xml add this lines android:name

<application
    android:allowBackup="true"
    android:icon="@mipmap/ic_launcher"
    android:label="@string/app_name"
    android:supportsRtl="true"
    android:theme="@style/AppTheme"
    android:name="android.support.multidex.MultiDexApplication"
    >

And In your build.gradle also add

dexOptions {
    //incremental = true;
    preDexLibraries = false
    javaMaxHeapSize "4g"
}


packagingOptions {
     exclude 'META-INF/NOTICE.txt' // will not include NOTICE file
    exclude 'META-INF/LICENSE.txt' // will not include LICENSE file
}