Why Active Android is not working with gradle 2.0?

Question

I am using Active Android in my app. It was working fine till I upgraded my Android Studio to 2.0 from 1.3. With this upgrade my gradle also got upgraded to 2.0 which is causing some issue with the Active Android.

I am getting this error when building with gradle 2.0.

Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String com.activeandroid.TableInfo.getTableName()' on a null object reference
                                                                       at com.activeandroid.Cache.getTableName(Cache.java:156)
                                                                       at com.activeandroid.query.From.addFrom(From.java:169)
                                                                       at com.activeandroid.query.From.toSql(From.java:250)
                                                                       at com.activeandroid.query.From.execute(From.java:298)

I tried building my old studio with gradle 1.3 it is still working fine. Any help please?

build.gradle file when app is giving the above error

buildscript {
    repositories {
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:2.0.0'
        classpath 'com.google.gms:google-services:2.0.0-beta2'
    }
}

allprojects {
    repositories {
        jcenter()
    }
}

build.gradle when app is working fine

buildscript {
    repositories {
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:1.3.0'
        classpath 'com.google.gms:google-services:2.0.0-beta2'
    }
}

allprojects {
    repositories {
        jcenter()
    }
}

gradle wrapper properties

distributionBase=GRADLE_USER_HOME
distributionPath=wrapper/dists
zipStoreBase=GRADLE_USER_HOME
zipStorePath=wrapper/dists
distributionUrl=https\://services.gradle.org/distributions/gradle-2.10-all.zip

Answer 1

I ran into this problem too, I found it's only an issue on Android 23+ devices, and it can be avoided if you turn Instant Run off (File->Settings->Build, Execution, Deployment->Instant Run).

If you want to keep Instant Run you can try UnChecking "Restart Activity on Code Changes"

On Mac:

Preferences > Build, Execution, Deployment > Instant Run > Uncheck "Restart Activity on Code Changes"