What does it mean No Launcher activity found

Question

I am writing a simple program of Android  and getting these no errors  I don t know what they are  My program is right  but showing not output  I think it is because of these two lines    2005-01-06 19 56 38 - my Android  No Launcher activity found   2005-01-06 19 56 38 - my Android  The launch will only sync the application package on the device

User · Answer

It means you didn t specify an Activity for Android to launch as the default when the app opens from the launcher   You have to add an Intent Filter in the Manifest for the Activity you would like to act as the default when the app is being launched   Read http   developer android com guide topics intents intents-filters html ccases for more details

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MAIN will decide the first activity that will used when the application will start  Launcher will add application in the application dashboard   If you have them already and you are still getting the error message but maybe its because you might be using more than more category or action in an intent-filter  In an intent filter there can only be one such tag  To add another category  put it in another intent filter  like the 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            lt  --              TODO - Add necessary intent filter information so that this                 Activity will accept Intents with the                 action  android intent action VIEW  and with an  http                  schemed URL         -- gt           lt intent-filter gt               lt action android name  android intent action VIEW    gt               lt data android scheme  http    gt               lt category android name  android intent category BROWSABLE    gt           lt  intent-filter gt

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Like Gusdor said above   Multiple action tags in a single intent-filter tag will also cause the same error    Give him the credit  I could just kiss Gusdor for this   I didn t find any docs for this fact  I had added a new  USB  action and being clever  I lumped it in the same intent-filter  And it broke the launch  Like Gusdor said  one intent filter  one action  Apparently each action should go in its own intent filter   It should look like this      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 intent-filter gt     lt action android name  android hardware usb action USB DEVICE ATTACHED    gt   lt  intent-filter gt    When I did this  WAZOO  it worked

User · Answer

In Eclipse when can do this   But it is preferable make the corresponding changes inside the Android manifest file

User · Answer

Here s an example from AndroidManifest xml   You need to specify the MAIN and LAUNCHER in the intent filter for the activity you want to start on launch   lt application android label   string app name  android icon   drawable icon  gt       lt activity android name  ExampleActivity                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

User · Answer

You missed in specifying the intent filter elements in your manifest file Manifest file is    lt application android label   string app name  android icon   drawable icon  gt       lt activity android name  Your Activity Name                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    Add and check this correctly  Hope this will help

User · Answer

You can add launcher to activity in eclipse manifest visual editor

User · Answer

I fixed the problem by adding activity block in the application tag  I created the project using wizard  I don t know why my AdroidManifest xml file was not containing  application block  I added the application block           lt application     android icon   drawable ic launcher      android label   string app name   gt       lt activity         android name   ToDoListActivity          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    And I get the desired output on the emulator

User · Answer

Manifest is case sensitive  so please compare this lines for any case mismatch especially the word MAIN in     lt action android name  android intent action MAIN    gt   lt category android name  android intent category LAUNCHER    gt

User · Answer

If you are using the standard eclipse IDE provided by google for Android development  you can check the  Launcher Activity  check-box while creating a new Activity  Please find below

User · Answer

Do you have an activity set up the be the launched activity when the application starts   This is done in your Manifest xml file  something like         lt activity android name   Main  android label   string app name          android screenOrientation  portrait  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

User · Answer

Multiple action tags in a single intent-filter tag will also cause the same error

User · Answer

You have not included Launcher intent filter in activity you want to appear first  so it does not know which activity to start when application launches  for this tell the system by including launcher filter intent in manifest xml

User · Answer

Check your manifest xml  Make sure you have the category LAUNCHER there    lt activity android name   myActivity          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

User · Answer

As has been pointed out  this error is likely caused by a missing or incorrect intent-filter   I would just like to add that this error also shows up if you set android exported  false  on your launcher activity  in the manifest

User · Answer

I had this same problem and it turns out I had a     instead of a     in the xml tag  It still gave the same error but just due to a syntax problem

User · Answer

just add this to your aplication tag in AndroidManifest xml file    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    and also edit the uses-sdk tag from android targetSdkVersion  16  to 17    lt uses-sdk     android minSdkVersion  8      android targetSdkVersion  17    gt

[android] What does it mean "No Launcher activity found!"

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