Default Activity Not Found on Android Studio upgrade

Question

I upgraded IntelliJ Idea from 12 0 4 to 12 10    Now all the modules in my Android project give the error    Error  Default Activity Not Found  I reverted back to 12 0 4 and it everything works again   Any ideas  I think it might be an issue with a missing plugin  Since the plugin is not installed  it is not able to find the default activity  Another thing could have been a local config  but I doubt it  I deleted the configuration folder to verify and that didn t change anything

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In my case this happened because there s was a manifest merger error and I was trying to run the app  Look at the specific error by running Build- gt Make Project

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I found this blog that really fixed this issue in my case  It turns out you have to add some sort of intent    lt intent-filter gt       lt action android name  android intent action MAIN   gt       lt category android name  android intent category LAUNCHER   gt   lt  intent-filter gt    It was definitely straightforward  Reference   https   www aboutonline info 2018 08 error-running-app-default-activity-not-found-on-android-with-kotlin html

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This solution should work for you    Go to Edit Configuration  Select Activity select nothing and apply

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Go to manifest file and then go merge manifest file see error and solve manifest issue clean project and run

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Go to Manifest - gt  Merged Manifest Tab  bottom of screen   On the right panel  if you have any error  resolve it   This was the solution for me  error with tool replace not needeed

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Well  I don t understand Android Studio sometimes     I encountered the same problem and tried the what the answers here told  but to no avail  And then I changed one thing  the action in my intent-filter was having the action name all in caps and I changed it to small and left only the word MAIN in caps  and it solved the problem  How absurd  I hope this can help someone

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If you are working on a widget app this solution should work for you    Go to Edit Configuration Set Launch Option to nothing

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Nothing above helped me  After some time I found that IDEA changed action names to uppercase  Like    lt intent-filter gt     lt action android name  ANDROID INTENT ACTION MAIN   gt     lt category android name  ANDROID INTENT CATEGORY LAUNCHER   gt   lt  intent-filter gt    After reverting to normal  IDEA recognizes default activity    lt intent-filter gt     lt action android name  android intent action MAIN    gt     lt category android name  android intent category LAUNCHER    gt   lt  intent-filter gt

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You can get Android Studio not to complain by going to the  Edit Configurations  menu  tap  Shift  three times  type  Edit Configurations    then change Launch Options   Launch to  Nothing

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I changed my Intent-filter to   lt intent-filter gt       lt action android name  android intent action MAIN    gt       lt category android name  android intent category DEFAULT   gt       lt category android name  android intent category LAUNCHER    gt   lt  intent-filter gt    Just add DEFAULT option as well  I was using the Process Phoenix library and it prompted me to define a default intent  This addition solved my problem

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I was facing similar issue recently  The issue was with activitymanifest XML file  Please check if taglines are closed properly

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100  working You must be seeing this  First open your manifest and check if this present     lt activity       android name  quot com your package name YourActivity quot        android label  quot  string app name quot  gt          lt intent-filter gt              lt action android name  quot android intent action MAIN quot    gt              lt category android name  quot android intent category LAUNCHER quot    gt           lt  intent-filter gt      lt  activity gt   If not present add it If the above is present but still you see default activity not found  Follow these steps  1  Click edit configuration  2  On clicking edit configuration you ll see that launch option is set on DEFAULT ACTIVITY   Change it to nothing    Problem solved  Happy Coding

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This method works for me  Click on the app icon and then choose edit configurations  In the edit-configuration choose specified activity instead of the default activity  Then give the path of the activity below       In the end sync with the gradle files

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I got this error for trying to run an app that didn t have an activity  it was an androidTest project   So I just right clicked on the test project  and selected Run or Debug from the context menu

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Sometimes uninstalling the app for all users helps  Go to Application list in settings go to your app or scroll till the end of the list  then uninstall it  Hope this helps

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my experience  make sure that all your java file has been indentify if IDEA not indentify your java file  so he not able to understand what s  Activity  means   good luck

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You app have launch activity default   possibly this could be your mistake    Step 1  Select Edit Configurations    Step 2  watch this warning  Default Activity not found   Step 3  select a default activity     Step 3  Save your changes and finish    Good Luck

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Try to right click on the project and choose Open Module Settings  Then go to the Sources tab in your module  find the src folder  right click on it and mark it as Sources  blue color    EDIT  There is no sources tab in later versions of Android Studio  but you can edit the build gradle file instead  https   stackoverflow com a 22028681 1101730

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I got this error   And found that in manifest file in launcher activity I did not put action and category in intent filter   Wrong One    lt activity android name   VideoAdStarter  android label   string app name  gt        lt action android name  android intent action MAIN    gt       lt category android name  android intent category LAUNCHER    gt    lt  activity gt    Right One    lt activity android name   VideoAdStarter  android label   string app name  gt        lt intent-filter gt           lt action android name  android intent action MAIN    gt           lt category android name  android intent category LAUNCHER    gt       lt  intent-filter gt    lt  activity gt

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In Android Studio 4 0 please change Launch to Nothing   Run Debug Configuration -  Android App -  app -  General -  Launch Options -  Launch   Nothing

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Check if an activity tag is present inside application tag in AndroidManifest xml file

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Invalidate Caches   Restart        After that  your app must be run

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I had this problem for 2 days   Tried every possible solution but nothing worked     Finally find a solution     Here is what you need to do     Close Android Studio  Go to C  Users UserName android and rename the build-cache folder to build-cache bak  Go to C  Users UserName AndroidStudio3 3 system and rename these folders  caches to caches bak  compile-server to compile-server bak  convert bat  conversion to conversion bak  external build system to external build system bak  frameworks to frameworks bak  gradle to gradle bak  resource folder cache to resource folder cache bak  Open the Android Studio and open your project again

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After updating Android Studio from 1 2 x to 1 3 I got the same problem and I tried all suggestions but nothing worked  Then I did this   Go to Run Debug Configurations  Select the configuration that gives the error and delete it  Create a new one with the same name and settings  After that  reconnect the USB cable and run the application   This solved the problem for me

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If the options above do not work  try deleting the  gradle folder   I am using Android Studio 3 3 1  All my projects were fine  when they all suddenly stopped working saying that there was no activity  Even brand new projects were showing the same error  After hours invalidating cache  trying to fix the Manifest file  I ve noticed that it had some relationship with androidx libraries like  androidx core core-ktx    In some projects  just updating the libs fix the problem  but what actually worked was deleting the  gradle folder

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Android Manifest xml set the starting activity like following   lt intent-filter gt       lt action android name  android intent action MAIN    gt        lt category android name  android intent category LAUNCHER    gt   lt  intent-filter gt

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Use      File -  Invalidate Caches   Restart      Then reboot the machine  PC  Laptop etc

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I got the same similar error on different scenario Error  Default Activity Not Found and was not able to run the project  I found out that my project minSdkVersion 16 how ever one of the package require minSdkVersion  gt   21  I update the dependencies and build again then I was able to run the project again  I use Android Studio 4 0 1

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lt activity android name   MainActivity  gt       lt intent-filter gt           lt action android name  android intent action MAIN    gt           lt category android name  android intent category LAUNCHER    gt       lt  intent-filter gt   lt  activity gt    Just add this in your manifest file within  tags just replace MainActivity with your default activity and android intent action youractivity will work

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I started with a demo app and modified it  I change the java path inside source from com -  example -  foo to my own and edited the manifest  however  Android Studio  0 8 7  got very confused   I tried everything listed above and none of it worked for me  Maybe it even made things worse   My final solution was to edit  lt projectname gt  iml in the  idea subdirectory by opening it up in Android Studio  aka text editor    Before    lt content url  file    MODULE DIR   gt     lt sourceFolder url  file    MODULE DIR  gen  isTestSource  false  generated  true    gt   lt  content gt    I  re added the src directory  2nd line   After    lt content url  file    MODULE DIR   gt     lt sourceFolder url  file    MODULE DIR  src  isTestSource  false    gt     lt sourceFolder url  file    MODULE DIR  gen  isTestSource  false  generated  true    gt   lt  content gt    After saving it  Android Studio reloaded and started functioning as expected

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Firstly make sure that you have included default activity in manifest   Example    lt activity android name   DefaultActivity  gt       lt intent-filter gt           lt action android name  android intent action MAIN    gt           lt category android name  android intent category LAUNCHER    gt       lt  intent-filter gt   lt  activity gt    If you have tried everything and nothing seems to works then   Delete the cache from your  Home   gradle caches and sync project again    Or check this answer     https   stackoverflow com a 53476487 5507705

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While Configuring a new project  the company name should end as  app  for example it should be android example com app and it should not be android example com

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I have been having this problem on android studio 3 0 1  and it was caused by manifest merge failure  For some reason I have not been given any error message in the message output  I had to check the merged manifest  app- manifests- AndroidManifest xml then  merged manifest  tab  and there at the bottom there was an error indicating that the newest library that was added in the build gradle had a dependency on some other library whose minSdk was higher than my app minSdk  The solution was in this message and it was to add    lt uses-sdk tools overrideLibrary  timber log   gt    to AndroidManifest xml  Actually this library  piwik 1 0 2  had already this overrideLibrary in its manifest   The strange thing was that other team members didnt experience this problem

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ugly but worked for me   Had this error message  my problem was in a module  I just deleted the application tag compleatly from my module s manifest and it worked    delete ic launcher from the module library as well   was    lt  xml version  1 0  encoding  utf-8   gt   lt manifest xmlns android  http   schemas android com apk res android      package  com example mymodule      android versionCode  1      android versionName  1 0   gt        lt uses-sdk         android minSdkVersion  16          android targetSdkVersion  23    gt        lt application         android allowBackup  true          android icon   drawable ic launcher          android label   string app name          gt           lt activity             android name  com example mymodule MainActivity              android label   string app name   gt               lt intent-filter gt                   lt action android name  android intent action MAIN    gt                    lt category android name  android intent category LAUNCHER    gt               lt  intent-filter gt           lt  activity gt       lt  application gt    lt  manifest gt    now    lt  xml version  1 0  encoding  utf-8   gt   lt manifest xmlns android  http   schemas android com apk res android      package  com example mymodule      android versionCode  1      android versionName  1 0   gt        lt uses-sdk         android minSdkVersion  16          android targetSdkVersion  23    gt     lt  manifest gt

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Well I got this error too      Error  Default Activity Not Found   well in my case  it was for wear module   I don t need an Activity there so what i do is simply    go to edit configuaration - wear-  Launch Options- Launch- Nothing  Apply changes Click Ok  Remove the existing code for default activity from your manifest file    Note  Don t forget to Clean Project and Sync Gradle Files

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You Might be missing  attributes  Make sure to include this activity inside manifest file

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Go to build gradle  project  xyz   buildscript       repositories           jcenter            google         allprojects       repositories           jcenter           google             Just place  google    to the top of  jcenter     buildscript       repositories           google           jcenter         allprojects       repositories           google           jcenter          enter code here           It works perfectly for me

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I have the same problem in Android Studio 3 3 Canary 3   Project from Android Studio 3 0 stabile version works firstly correctly  than after some cleans rebuilds it starts showing No Default Activity error  I tried to reinstall this alpha version of Android Studio  error again  But then started it in old stabile Android  and using apk install  and this apk works correctly    Moreover my project was created with Instant App  base  feature  instant  app subdirectories   I think this Android Studio has some problems with Manifest xml files separated into this multiple directories    So I have changed in settings to this

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This will help someone who landed on this page like me  I got the error Error  Default Activity Not Found after I copy pasted a code from an online course    The mistake was in the first line MainActivity java file   Instead of package com example myname justjava   the first line was package com example android justjava    from the code provided for learning  Rectifying it got rid of the error

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Just sharing how I solved this issue  I had no issue related to intent launcher declaration  I even tried to manually declare the activity still didn t work  also cleared the cache and tmp folder nothing worked  As I had several activities it seems that one of the activities which I pulled from repo had duplicate declarations

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check all the line in your manifest   in my case i have this error    android theme   android style Theme Wallpaper NoTitleBar Fullscreen    nothing in the logcat

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Edit androidmanifest xml   lt  xml version  1 0  encoding  utf-8   gt   lt manifest xmlns android  http   schemas android com apk res android      package  com example java2  gt        lt application         android allowBackup  true          android icon   mipmap ic launcher          android label   string app name          android roundIcon   mipmap ic launcher round          android supportsRtl  true          android theme   style AppTheme  gt           lt activity android name   MainActivityName  gt               lt intent-filter gt                   lt action android name  android intent action MAIN    gt                    lt category android name  android intent category LAUNCHER    gt               lt  intent-filter gt           lt  activity gt       lt  application gt    lt  manifest gt

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Hope this answer helps somebody   If you already have the  lt intent-filter gt  tag  just be sure that you are closing all tags correctly   My error was that I close the  lt activity gt  tag just with a  lt   gt  instead of  lt  activity gt

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None of the answers worked for me  The error message said     Unable to read Manifest from    path to the apk      No default activity found   The error told me that somehow Android Studio is reading previously built apk  Hence  I did   gradlew clean to get rid of out folder which fixed the problem for me

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I found this in my code    lt context android name   MainActivity  gt       lt intent-filter gt           lt action android name  android intent action MAIN    gt           lt category android name  android intent category LAUNCHER    gt       lt  intent-filter gt   lt  context gt    If you look very carefully  it should be  lt activity android name   MainActivity  gt  instead   Apparently  I refactored an  activity  somewhere  and it changed names in the AndroidManifest as well

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just faced this error on android studio 2 1 2  solved by adding MAIN LAUNCHER intent-filter to default activity in flavour manifest  though filter already was in default activity in default manifest  It even was in merged manifest  but studio can t found it until i duplicated filter in both manifests

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Sometimes this error because of android studio misbehavior because of internal cache and project building system  Even we have set everything perfect for default activity  For such an issue  I found a solution and It is working for me    Step 1  Android Studio ---  File--  Invalid Cache and closed android studio   Step2  Go to path C  Users USER AndroidStudio3 2 system  Step 3  Change name with extension  back of below folder       Example  compiler should be compiler back   compiler compiler-server conversion external-build system framework gradle resource folder cache   Step 4  Start Android studio and open your project   I hope it will work for you

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In Android Studio under Run Debug Configuration -  Android Application -  General -  Activity -  select the option  Do not launch Activity

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It happened to me after upgrading to Android Studio 4 0  I tried to invalidate caches  to delete and create again the Android App configuration  to select a specific Launch activity but I always got the error stating that the activity wasn t defined on AndroidManifest xml but of course it was  What worked for me is going to the Run Debug configuration  where you define the Launch Options   removing the  quot Gradle-aware Make quot  on Before launch at the bottom of the dialog  I run successfully the app and then I added the  quot Gradle-aware Make quot  again and everything is working  Does not make sense  I know  Bus that was what I did

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This problem is resolved with Android Studio 4 1

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Sync Project With Gradle Files works sometimes  To fix this Overall issue you should   Exit Android Studio Go to USER -  AndroidStudio -  system -  caches Delete that folder Start Android Studio    It will re-index your files and that should work  Thanks to kirtan403 from a similar question

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The correct way to do this is to add the following to the Manifest file    lt activity     android name  FULL NAME OF YOUR ACTIVITY      android label   string app name   gt       lt intent-filter gt           lt action android name  android intent action MAIN    gt            lt category android name  android intent category LAUNCHER    gt       lt  intent-filter gt   lt  activity gt    This should be inserted between    lt application gt   lt  application gt    No need in invalidating caches

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In my case  there was a misstype in AndroidManifest xml as shown below  Removing  o  letter above application tag solved  Apparently  Android Studio doesn t detect type errors in AndroidMainfest xml    lt uses-permission android name  android permission ACCESS FINE LOCATION   gt   lt uses-permission android name  android permission ACCESS NETWORK STATE   gt   o  lt application android name   AppName               android allowBackup  false               android icon   drawable ic launcher               android label   string app name               android theme   android style Theme Light NoTitleBar  gt

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I can t comment on why the upgrade of IntelliJ might cause this problem because I don t use it  However  that error   quot Default Activity Not Found quot  seems to be telling you that you don t have an activity declared in AndroidManifest xml that is marked as the main activity  to be launched when the application starts  You should have at least one activity that looks something like this   lt activity         android name  quot com your package name YourActivity quot          android label  quot  string app name quot  gt           lt intent-filter gt               lt action android name  quot android intent action MAIN quot    gt                lt category android name  quot android intent category LAUNCHER quot    gt           lt  intent-filter gt   lt  activity gt   If you don t have at least one activity with an intent filter like that  you would most likely see the error message you have included here  You should add that intent filter to the Activity that you wish to open when you start the application  and that should fix your problem  Edit  Additional details  AndroidStudio4 1 2  if the project is created as EmptyApplication then the developer must manually create below 3 files to avoid Default Activity Not Found error AndroidManifest xml  MainActivity java  activity main xml

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I tried Invalidate cache and restart  no luck  Then i verified manifest  it was having the main activity intent properly set    I was having the  Offline work  checked under Global Gradle Settings in  File -  Settings -  Build  Execution  Deployment -  Gradle   I unchecked it  modified the build gradle  Project  to use a different gradle version  com android tools build gradle 3 3 1  and saved it that triggered Gradle sync    After sync ing  this error was gone  i was able to debug again

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I was facing the same issue  In my case  I had declared an activity more then one time  After removing duplicate activity the error got resolved

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As this question is a  quot landing page quot  for plethora of issues with manifest  resulting in no Default Activity found  here is another thing to check if you are having this problem  Open your Manifest and switch to Merged Manifest tab  Sometimes the issue is related to merging all the manifests in the project to one  which can result to error and therefore  quot Default Activity not found quot   The problem is this error is not shown anywhere except this Merged Manifest tab as far as I know  Es  in a project minSdkVersion 10   downgrade the version of implementation in build gradle file  from 25 4 0 to 25 3 1 solve this problem  dependencies   implementation  com android support appcompat-v7 25 3 1     implementation  com android support design 25 3 1           implementation  com android support mediarouter-v7 25 3 1

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TL DR    Make sure that you not only check the action and category name  but the path  Especially if you did a refactor   The solution for me was to closely check the AndroidManifest file  I did a refactor  and it not only updated the intent-filters  but it also updated the path of the intent filter name      type and value were added to the path here when I did the refactor   lt action android name  android intent type MAIN   gt    lt category android name  android intent value LAUNCHER   gt    It should be     lt action android name  android intent action MAIN   gt   lt category android name  android intent category LAUNCHER   gt

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The issue in my case was  In my app module manifest  I had to replace other dependency module manifest tag I added below code under application tag and it worked for me tools replace  quot android allowBackup  android usesCleartextTraffic quot   For you it might be due to some other properties  you must override them as well

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nothing till here helped me and Android Studio made this problem with all my apps that were running before already - so I knew - it does not has to do with my code   NOW I SOLVED IT   You need to reset Android Studio  Just go to C  Users yourusername androidStudio3 2  or similar  and delete this directory   This guy shows you exactly how to do it in his video in an older version  https   www youtube com watch v AwZEliSPGwU amp t

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For me  this problem occurred because of some other reason  So even though it has more than 30 answers  I still feel my solution might help someone   My styles xml was looking something like this    lt style name  AppTheme  parent       gt            lt  style gt    lt style name  AppTheme NoActionBar  parent       gt            lt  style gt    And my AndroidManifest xml was something like this    lt application     android label   string app name      android theme   style AppTheme  gt            lt  application gt    And for some reason  I decided to have my theme without ActionBar  so I went ahead and deleted it from my styles xml  So here is the updated one    lt style name  AppTheme NoActionBar  parent       gt            lt  style gt    In addition to this  I had to update the theme in my manifest file  but I forgot that  So when I run the app  I got the error saying   Error  Default Activity Not Found   After a long struggle  I found the problem and modified my manifest fle accordingly    lt application     android label   string app name      android theme   style AppTheme NoActionBar  gt            lt  application gt    Conclusion   If you have a wrong AndroidManifest xml which may lead into manifest merge failed  then AS can give this error

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In my case File - gt  Invalidate Caches   Restart    didn t help  Everything was ok with my project and of course I had next intent filter for my activity   lt intent-filter gt       lt action android name  android intent action MAIN    gt       lt category android name  android intent category LAUNCHER    gt   lt  intent-filter gt    What really helped me is deleting Android Gradle cache folders  they can grow up to 10-30 GB   Go to C  Users YOUR USER WINDOWS NAMEand delete next folders    android  AndroidStudio3 2  gradle    you may save some Android configs from  AndroidStudio3 2 before deleting it if you want it   You can create bat file CLEAR CACHE cmd like this to delete folders without Recycle Bin  rmdir  S  Q  android rmdir  S  Q  AndroidStudio3 2 rmdir  S  Q  gradle   it would work much faster and you don t have to delete it also from Recycle Bin  p s  put CLEAR CACHE cmd into C  Users YOUR USER WINDOWS NAME  it s also a good idea to delete Android Studio folder and download it again

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This occurred to me after my PC restarted unexpectedly  Strangely  I had made no changes and still got this error  None of the above helped me  What solved my problem  is this  Step 1    Step 2    Step 3    If this doesn t solve the problem give other tries  Try 1  File - gt  Invalidate Caches   Restart     Try 2 check whether these following two lines  lt action android name  quot android intent action MAIN quot    gt   lt category android name  quot android intent category LAUNCHER quot    gt   are in your launcher activity declaration in manifest xml  lt activity         android name  quot com your package name YourActivity quot          android label  quot  string app name quot  gt           lt intent-filter gt               lt action android name  quot android intent action MAIN quot    gt                lt category android name  quot android intent category LAUNCHER quot    gt           lt  intent-filter gt   lt  activity gt   Try 3   Click as shown    Run   Debug Configurations opens      if this also doesn t help  Try 4   File- gt Export to ZIP  and Import it as new project   Best luck

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Build - gt  Rebuild Project  File - gt  Invalidate Caches   - gt  Invalidate and restart   It works for me   Rebuild project to make sure that no errors in project  Then we can invalidate cache

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Late in party  Just clean and rebuild  Problem will be gone

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Since Android Studio 3 5 or 3 6 I started getting the Default Activity not found and I became tired of Invalidating Caches  amp  Restart  rebuilding project etc   It turned out  the way I handle multi-modules and manifests was erroneous  I had the default Activity s Manifest in library module only  but it should ve been in both app modules   Assuming librarymodule appmodule1 appmodule2   Remove HomeActivity from librarymodule Manifest whatsoever  Add    class AppModuleActivity1   HomeActivity   to appmodule1 class AppModuleActivity2   HomeActivity   to appmodule2    To appmodule1 Manifest inside application tag  I added             lt activity             android name  com app name AppModuleActivity1  gt               lt intent-filter gt                   lt action android name  android intent action MAIN    gt                   lt category android name  android intent category LAUNCHER    gt               lt  intent-filter gt           lt  activity gt     Same about appmodule2 but change 2 for 1 in naming

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In my case I refactored a member variable that was named  activity   I renamed it to  context     I found out that the refactor was made to the activity tags in manifest  and I found them context tags instead    this is really stupid from Android Studio

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TouchBoarder almost had it  Although selecting  Do not launch Activity  results in nothing launching   In Android Studio under Run Debug Configuration -  Android Application -  General -  Activity -  select the option  Launch    Choose your Activity  This doesn t exactly fix the intended behaviour but rather overrides it correctly

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Exit Android Studio   Go to path C  Users YOUR WINDOW USER NAME  AndroidStudio3 3 system  Remove  caches folder and  tmp folder

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This is still happening with Android Studio 4 0  so I have to delete the following folder to fix this problem  C  Users my user name AndroidStudio4 0 system caches

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Error  Default Activity Not Found  I solved this way Run  Edit Configuration   Android Application    Enter the path of your default  activity class in  Launch  Edit Box

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All answers above didn t help me   Try to remove this   lt  xml version  1 0  encoding  utf-8   gt    in your AndroidManifest   Then   File  gt  Sync Project with Gradle Files

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In case your application doesn t have an Activity  only a service for example   change the run debug configuration  Launch  option to Nothing

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If you see that error occur after upgrading versions of IntelliJ IDEA or Android Studio  or after Generating a new APK  you may need to refresh the IDE s cache   File - gt  Invalidate Caches   Restart

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I ve encountered the same issue  For some reasons  android Studio replaced all the android name attributes in most of XML files  including the manifest  to android subject which isn t recognized by Android Studio     As you can see in the picture above the IDE doesn t recognize the android subject attribute  As a result  it won t be able to read the lines which specify the MainActivty    The solution is simply to change every android subject to android name and then Rebuild the project from Build menu -  Rebuild Project  You might encounter the same issue when rebuilding the project  so do the same as above

[android] "Default Activity Not Found" on Android Studio upgrade

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