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, Nov 30 '15 at 03:12
[this answer](https://stackoverflow.com/a/35169716/2826147) will solve your issue — Amit Vaghela, Oct 11 '17 at 07:38

score 313 · Accepted Answer · edited May 04 '16 at 07:47

313

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 04 '16 at 07:47

Ramz

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answered Jan 14 '16 at 08:32

peeyush pathak

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10

This just happened to me on a Marshmallow device – Jon Feb 26 '16 at 21:27
The same issue on Samsung Galaxy S3 – nAkhmedov Apr 20 '16 at 13:10
It worked for me. but why is it that the instant run creates this issue? @peeyushpathak – Parth Anjaria May 23 '16 at 07:46
First time it packs up the class in one dex file and second time it packs up in other dex file. So on 2nd time the interpretor searches for that particular class int first dex file but it is not present there. – peeyush pathak May 23 '16 at 09:04
37

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. – natario May 25 '16 at 12:32
17

@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 Jul 08 '16 at 19:54
@LarsH then IMO the answer should clearly state that this is a temporary solution, that we are waiting for a fix, possibly linking to a bug report, explaining what you’ll miss if you disable instant run, mentioning there might be better solutions/workarounds. – natario Jul 08 '16 at 20:01
3

@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. – LarsH Jul 08 '16 at 20:13
Instead of disabling instant run, better solution is to select Run option instead under Run Menu in Android Studio. – Fenil Aug 10 '16 at 10:18
I cannot see the File -> Settings I'm using Android Studio 2.1.2 – natsumiyu Aug 24 '16 at 09:00
which os are you using – peeyush pathak Aug 24 '16 at 09:01
@peeyushpathak I'm using OS X El Capitan – natsumiyu Aug 25 '16 at 00:58
I think "clean project" / "Re-build project" should be enough to fix the issue – Swas_99 Sep 08 '16 at 08:09
2

This is a sad answer, but because Instant Run is so broken it's the only correct solution. – b.lyte Jan 10 '17 at 05:06
@clu cannot do much about it. So just wait till it is stable and working fine. – peeyush pathak Jan 11 '17 at 04:57
it could be a better if all of voters send a log to google, every time when this issue occurs... – A. Petrov Feb 01 '17 at 12:05
Running Android Studio 2.3, Gradle 3.3, Android Plugin 2.3.0, this problem (and its solution in this answer) are still current. Thank you for this answer. – albert c braun Mar 30 '17 at 22:59
There seems to be an existing bug report for this: https://code.google.com/p/android/issues/detail?id=224993 but it does not have much support. You might want to vote for it. – albert c braun Mar 30 '17 at 23:51
Now, Uninstalling the app and disabling the instant run made, .so files linkable to to code. – Yogesh Seralia Apr 05 '17 at 09:57
instant run is evil – L.Grillo Apr 13 '17 at 08:47

emmgfx · Answer 2 · 2015-11-30T09:07:52.417

22

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 '15 at 09:07

answered Nov 28 '15 at 17:32

emmgfx

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The third step: where can I find , I want to change. I can find the code! – GeekHades Nov 30 '15 at 02:58
Hi, see the edited answer. (`/.idea/gradle.xml`) – emmgfx Nov 30 '15 at 09:08
first 2 steps seemed to fix it for me. – Marc Dec 10 '15 at 21:31
What is `option name="gradleHome"`? Where is that located. – IgorGanapolsky Dec 21 '15 at 00:16
1

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 – Stoycho Andreev Feb 07 '16 at 14:41

score 18 · Answer 3 · answered May 31 '16 at 18:46

18

I had the same error.

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

answered May 31 '16 at 18:46

Calixto

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underrated answer! – Anup Oct 07 '16 at 07:35
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. – Shawn Jan 18 '17 at 22:29

score 9 · Answer 4 · answered Jun 14 '16 at 09:22

9

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

answered Jun 14 '16 at 09:22

Narendra Singh

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IgorGanapolsky · Answer 5 · 2016-09-09T13:09:07.383

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 09 '16 at 13:09

answered Dec 21 '15 at 00:19

IgorGanapolsky

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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 Jan 18 '16 at 12:27
1

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.. – Liuting Jan 18 '16 at 14:34
1

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 ... – Bhuro Aug 29 '16 at 14:02

score 4 · Answer 6 · answered Jan 19 '16 at 14:55

4

Changing to

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

fixed issue

answered Jan 19 '16 at 14:55

ar-g

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score 3 · Answer 7 · answered Apr 10 '16 at 13:52

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.

score 2 · Answer 8 · edited Apr 07 '16 at 22:50

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 07 '16 at 22:50

Jon Adams

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answered Feb 10 '16 at 12:02

Mahendra Chhimwal

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score 2 · Answer 9 · answered Apr 09 '16 at 17:13

2

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

answered Apr 09 '16 at 17:13

easycheese

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score 2 · Answer 10 · answered Jun 14 '16 at 09:06

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 '16 at 09:06

Ahmed Mostafa

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score 2 · Answer 11 · answered Sep 06 '16 at 06:03

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 ) .

score 1 · Answer 12 · answered Jun 09 '16 at 16:59

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
}

Siddhant Senapati · Answer 13 · 2019-08-29T06:18:41.560

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 '19 at 06:18

answered Aug 22 '16 at 16:48

Siddhant Senapati

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black Activity? – Leo supports Monica Cellio Sep 27 '16 at 21:13

score 1 · Answer 14 · answered Dec 01 '16 at 17:16

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.

score 1 · Answer 15 · answered Jan 26 '17 at 10:03

1

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

answered Jan 26 '17 at 10:03

Anthony

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score 1 · Answer 16 · answered Aug 04 '17 at 07:23

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 04 '17 at 07:23

Mohammad Tauqir

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score 1 · Answer 17 · edited Oct 14 '22 at 18:46

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.

score -1 · Answer 18 · answered Feb 18 '16 at 09:58

-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 '16 at 09:58

Mr.Moustard

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

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