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

Question

I updated my Android Studio to version 2.0. But I had a problem, I don't know why?

The important error info:

Unable to instantiate application com.android.tools.fd.runtime.BootstrapApplication: java.lang.IllegalStateException: java.lang.ClassNotFoundException: com.eallcn.rentagent.MyDebugEallApplication

I searched a long time, But I didn't find the right answer you can see the link

At the same time when I click File->Project structure It shows this error:

Is there any problem somewhere in the libs? When gradle build the program the libs didn't load completely for current program. Is there any problem with Android Studio version 2.0?

When I use Android studio 1.4.0 to build and run the program. It works fine for me! But when I use the Android Studio 2.0, the problem shows up!

Why? Could you help me, please?

Here is detailed error log:

11-28 11:57:00.489 19890-19890/com.eallcn.rentagent.debug E/AndroidRuntime: FATAL EXCEPTION: main Process: com.eallcn.rentagent.debug, PID: 19890 java.lang.RuntimeException: Unable to instantiate application com.android.tools.fd.runtime.BootstrapApplication: java.lang.IllegalStateException: java.lang.ClassNotFoundException: com.eallcn.rentagent.MyDebugEallApplication at android.app.LoadedApk.makeApplication(LoadedApk.java:537) at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4586) at android.app.ActivityThread.access$1800(ActivityThread.java:139)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1316)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5314)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:864) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:680)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.IllegalStateException: java.lang.ClassNotFoundException: com.eallcn.rentagent.MyDebugEallApplication
at com.android.tools.fd.runtime.BootstrapApplication.createRealApplication(BootstrapApplication.java:167) at com.android.tools.fd.runtime.BootstrapApplication.attachBaseContext(BootstrapApplication.java:179) at android.app.Application.attach(Application.java:194)
at android.app.Instrumentation.newApplication(Instrumentation.java:992)
at android.app.Instrumentation.newApplication(Instrumentation.java:976)
at android.app.LoadedApk.makeApplication(LoadedApk.java:532)
at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4586) at android.app.ActivityThread.access$1800(ActivityThread.java:139) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1316) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:136) at android.app.ActivityThread.main(ActivityThread.java:5314) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:515) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:864) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:680) at dalvik.system.NativeStart.main(Native Method) Caused by: java.lang.ClassNotFoundException: com.eallcn.rentagent.MyDebugEallApplication at java.lang.Class.classForName(Native Method) at java.lang.Class.forName(Class.java:251) at java.lang.Class.forName(Class.java:216) at com.android.tools.fd.runtime.BootstrapApplication.createRealApplication(BootstrapApplication.java:155) at com.android.tools.fd.runtime.BootstrapApplication.attachBaseContext(BootstrapApplication.java:179) at android.app.Application.attach(Application.java:194) at android.app.Instrumentation.newApplication(Instrumentation.java:992) at android.app.Instrumentation.newApplication(Instrumentation.java:976) at android.app.LoadedApk.makeApplication(LoadedApk.java:532) at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4586) at android.app.ActivityThread.access$1800(ActivityThread.java:139) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1316) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:136) at android.app.ActivityThread.main(ActivityThread.java:5314) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:515) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:864) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:680) at dalvik.system.NativeStart.main(Native Method) Caused by: java.lang.NoClassDefFoundError: com/eallcn/rentagent/MyDebugEallApplication at java.lang.Class.classForName(Native Method) at java.lang.Class.forName(Class.java:251) at java.lang.Class.forName(Class.java:216) at com.android.tools.fd.runtime.BootstrapApplication.createRealApplication(BootstrapApplication.java:155) at com.android.tools.fd.runtime.BootstrapApplication.attachBaseContext(BootstrapApplication.java:179) at android.app.Application.attach(Application.java:194) at android.app.Instrumentation.newApplication(Instrumentation.java:992) at android.app.Instrumentation.newApplication(Instrumentation.java:976) at android.app.LoadedApk.makeApplication(LoadedApk.java:532) at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4586) at android.app.ActivityThread.access$1800(ActivityThread.java:139) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1316) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:136) at android.app.ActivityThread.main(ActivityThread.java:5314) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:515) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:864) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:680) at dalvik.system.NativeStart.main(Native Method) Caused by: java.lang.ClassNotFoundException: Didn't find class "com.eallcn.rentagent.MyDebugEallApplication" on path: DexPathList[[zip file "/data/app/com.eallcn.rentagent.debug-1.apk"],nativeLibraryDirectories=[/data/app-lib/com.eallcn.rentagent.debug-1, /vendor/lib, /system/lib, /data/datalib]] at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56) at java.lang.ClassLoader.loadClass(ClassLoader.java:497) at java.lang.ClassLoader.loadClass(ClassLoader.java:457) at java.lang.Class.classForName(Native Method) at java.lang.Class.forName(Class.java:251) at java.lang.Class.forName(Class.java:216) at com.android.tools.fd.runtime.BootstrapApplication.createRealApplication(BootstrapApplication.java:155) at com.android.tools.fd.runtime.BootstrapApplication.attachBaseContext(BootstrapApplication.java:179) at android.app.Application.attach(Application.java:194) at android.app.Instrumentation.newApplication(Instrumentation.java:992) at android.app.Instrumentation.newApplication(Instrumentation.java:976) at android.app.LoadedApk.makeApplication(LoadedApk.java:532) at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4586) at android.app.ActivityThread.access$1800(ActivityThread.java:139) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1316) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:136) at android.app.ActivityThread.main(ActivityThread.java:5314) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:515) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:864) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:680) at dalvik.system.NativeStart.main(Native Method)

I think this question is that: it is just about android studio 2.0 and gradle version is not compatible! — GeekHades
– GeekHades, Commented Nov 30, 2015 at 3:12

Ramz · Accepted Answer · 2016-05-04 07:47:48Z

314

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"

edited May 4, 2016 at 7:47

Ramz

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answered Jan 14, 2016 at 8:32

peeyush pathak

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Sign up to request clarification or add additional context in comments.

20 Comments

Jon Over a year ago

This just happened to me on a Marshmallow device

natario Over a year ago

Am I the only one who thinks that disable this major feature of your IDE is NOT a good solution? It’s like saying use Studio 1.4. Downvoted.

LarsH Over a year ago

@mvai: It's not an ideal solution, but it may be the best solution available. If the problem is caused by Instant Run, then knowing that and being able to disable it at times is extremely valuable. Downvoting this answer is like shooting the messenger who told you not to take the shortest route home because there was an ambush waiting for you..

LarsH Over a year ago

@mvai: OK, those things could arguably be done to improve the answer (though 4 of the 5 seem obvious). But downvoting is not for "this answer could be even better" but is for "this answer is not useful". Whereas this answer is very useful. Feel free to add the details that you think would improve the answer; either here or on your own answer.

b.lyte Over a year ago

This is a sad answer, but because Instant Run is so broken it's the only correct solution.

|

emmgfx · Accepted Answer · 2015-11-30 09:07:52Z

23

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 :)

edited Nov 30, 2015 at 9:07

answered Nov 28, 2015 at 17:32

emmgfx

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5 Comments

GeekHades Over a year ago

The third step: <option name="gradleHome" value="$APPLICATION_HOME_DIR$/gradle/gradle-2.4" /> where can I find , I want to change. I can find the code!

emmgfx Over a year ago

Hi, see the edited answer. (<project folder>/.idea/gradle.xml)

Marc Over a year ago

first 2 steps seemed to fix it for me.

IgorGanapolsky Over a year ago

What is option name="gradleHome"? Where is that located.

Stoycho Andreev Over a year ago

If you have in your application build gradle : aaptOptions.setProperty("cruncherEnabled", false), it is better to remove it. And one more thing DON'T use instant run until it is full stable, makes a lot of problmes

Calixto · Accepted Answer · 2016-05-31 18:46:31Z

18

I had the same error.

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

answered May 31, 2016 at 18:46

Calixto

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2 Comments

Anup Over a year ago

underrated answer!

Shawn Over a year ago

This appears to be the correct answer for me. I was getting the issue without using Android studio so I just ran a gradle clean and gradle assembleDebug which does the same thing.

Narendra Singh · Accepted Answer · 2016-06-14 09:22:14Z

9

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

answered Jun 14, 2016 at 9:22

Narendra Singh

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Comments

IgorGanapolsky · Accepted Answer · 2016-09-09 13:09:07Z

5

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)...

edited Sep 9, 2016 at 13:09

answered Dec 21, 2015 at 0:19

IgorGanapolsky

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3 Comments

Liuting Over a year ago

Are you using com.android.tools.build:gradle:2.0.0-alpha1? The error still exists for me after I upgrade it to com.android.tools.build:gradle:2.0.0-alpha6 + https\://services.gradle.org/distributions/gradle-2.10-all.zip

Liuting Over a year ago

Yeah I upgraded to Android Studio Preview 5, it says I have to upgrade the gradle version for instant run. It seems they are making quite frequent alpha releases for bug fixes..

Bhuro Over a year ago

If you are working on Client's project / your own product, the 'alpha' or 'beta' builds are not suggestible to use; instead try to use one or 2 down versions ... Cause they are not stable one. And if you are testing the unstable build for bug fixing and improvements, even the android studio from cannery channel can help more in the process ...

ar-g · Accepted Answer · 2016-01-19 14:55:24Z

4

Changing to

classpath 'com.android.tools.build:gradle:2.0.0-alpha6'

fixed issue

answered Jan 19, 2016 at 14:55

ar-g

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Comments

bsguru · Accepted Answer · 2016-04-10 13:52:16Z

3

I also got this error with Android 2.0 in stable channel.

What I did?
- I had an older version of the app already installed on the device (which was built using older version of the Studio) which I was trying to replace by running the newer app on device.
I just uninstalled the older version completely before running the new app and the trick worked.

answered Apr 10, 2016 at 13:52

bsguru

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Comments

Jon Adams · Accepted Answer · 2016-04-07 22:50:55Z

2

Just for those who want to update classPath with latest gradle plugin version, Where to find latest plugin version?

Check in http://tools.android.com/tech-docs/new-build-system and update your classPath. Latest one at current is

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

Always try to build with latest plugin version.

edited Apr 7, 2016 at 22:50

Jon Adams

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answered Feb 10, 2016 at 12:02

Mahendra Chhimwal

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Comments

easycheese · Accepted Answer · 2016-04-09 17:13:19Z

2

If you don't want to disable Instant Run, just do a project clean and rerun.

answered Apr 9, 2016 at 17:13

easycheese

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Comments

Ahmed Mostafa · Accepted Answer · 2016-06-14 09:06:49Z

2

Change classpath 'com.android.tools.build:gradle:2.1.2' to classpath 'com.android.tools.build:gradle:2.1.0' fixes my problem.

answered Jun 14, 2016 at 9:06

Ahmed Mostafa

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Comments

kumar kundan · Accepted Answer · 2016-09-06 06:03:45Z

2

I also faced the same problem and i solved it. In my case it was due to a mistake in global class ( Throughout Application context class ) , my mistake was in AndroidManifest.xml i have declared the Application class VolleyHelper as :-

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

but in VolleyHelper.java i don't have a Default constructor . So i added default constructor in VolleyHelper.java ( Application Class ) .

answered Sep 6, 2016 at 6:03

kumar kundan

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Comments

Farhad · Accepted Answer · 2016-06-09 16:59:04Z

1

you can also add this into your gradle to prevent making dex on debug

debug {
    // dev utilizes minSDKVersion = 21 to allow the Android gradle plugin
    // to pre-dex each module and produce an APK that can be tested on
    // Android Lollipop without time consuming dex merging processes.
    minSdkVersion 21
}

answered Jun 9, 2016 at 16:59

Farhad

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Comments

Jorgesys · Accepted Answer · 2016-12-01 17:16:35Z

1

In some Android devices with versions before OS 5.0 we get the error message:

Caused by: java.lang.ClassNotFoundException: Didn't find class "com.android.tools.fd.runtime.BootstrapApplication

We must disable "Instant Run".

Go to File > Settings > Built, Execution, Deployment > Instant Run

Then disable the option Enable Instant Run to hot swap code.

answered Dec 1, 2016 at 17:16

Jorgesys

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1 Comment

Oleksii Kyslytsyn Oct 7 at 7:56

Excellent red circle!

Anthony · Accepted Answer · 2017-01-26 10:03:23Z

1

I just needed to reboot my device. Tried everything else first unfortunately so wasted hours.

answered Jan 26, 2017 at 10:03

Anthony

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Comments

Mohammad Tauqir · Accepted Answer · 2017-08-04 07:23:21Z

1

If you are sharing your app then another solution is

go to Android Studio --> Build --> Build APK

A pop up will come with APK generated successfully. Show in Explorer will get you to the generated apk folder.

answered Aug 4, 2017 at 7:23

Mohammad Tauqir

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Comments

Siddhant Senapati · Accepted Answer · 2019-08-29 06:18:41Z

1

This error will happen when you add a blank activity with .java file. So to solve this error 1st you have to Build the project again. Then run it. Solved Thank You.

edited Aug 29, 2019 at 6:18

answered Aug 22, 2016 at 16:48

Siddhant Senapati

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1 Comment

Leo supports Monica Cellio Over a year ago

black Activity?

General Grievance · Accepted Answer · 2022-10-14 18:46:41Z

1

No need to disable "instant run".

go to project's root using File Explorer
Finish Android Studio(AS)
delete(relocate somewhere) ".gradle" 's folder content (to clean some cashs and old artifacts)
in res folder clean off all inappropriate files
launch the AS again
in module's build.gradle set buildTypes { debug {minifyEnabled true to false (that looks like an error was in my proguard file)

Sync, compile and run the app again.

edited Oct 14, 2022 at 18:46

General Grievance

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answered May 21, 2018 at 11:30

CodeToLife

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Comments

Mr.Moustard · Accepted Answer · 2016-02-18 09:58:43Z

-1

I just update Android Studio to the last version (2.0 Beta 5). It changes itself to classpath 'com.android.tools.build:gradle:2.0.0-beta5' and works like a charm.

answered Feb 18, 2016 at 9:58

Mr.Moustard

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