Unable to instantiate application com.android.tools.fd.runtime.BootstrapApplication ?Android

Question

Disable the Instant Run option in Android Studio. Instructions are in the Android Studio Instant Run documentation.

Instant Run tries to do hot swapping of your code; this causes the application class to be moved.

To disable Instant Run Go to File --> Settings--> Build,Execution,Deployment -->Instant Run ---> uncheck "Enable instant run"

I had the same error after trying to use the 2.0.

I solved it by reverting some gradle changes:

1/3:

Changing:

classpath 'com.android.tools.build:gradle:2.0.0-alpha1'

By:

classpath 'com.android.tools.build:gradle:1.2.3'

2/3:

Changing:

buildToolsVersion '23.0.2'

By:

buildToolsVersion "21.1.2"

3/3: (in <project folder>/.idea/gradle.xml)

And:

<option name="gradleHome" value="$APPLICATION_HOME_DIR$/gradle/gradle-2.8" />

By:

<option name="gradleHome" value="$APPLICATION_HOME_DIR$/gradle/gradle-2.4" />

I don't know what line is exactly the origin of the error, but with this three changes it was solved.

Hope that it helps you :)

I had the same error.

I solved it by cleaning the project ( Build > Clean Project )

Just go to Android Studio menu - Build --> Rebuild Project.

I was able to get rid of this error by updating gradle-wrapper.properties to gradle-2.14.1-all, and cleaning/rebuilding the project. Then it ran fine. No other changes were needed (as those suggested in the above answer)...