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I have been trying to run my app on my Nexus 4 for quite some time now. But everytime I try to launch it, it gives me an "App isnt installed" error. The app is working fine on the emulator. What could be the reason for this. Please help!

Swapnil Harkanth
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  • Hi, your question is a bit broad. Could you please try to specify and provide us with some more details? Like code for instance. That way it's easier for people to help you. – Stígandr Sep 21 '14 at 07:43
  • would my manifest code work? – Swapnil Harkanth Sep 21 '14 at 07:46
  • @SwapnilHarkanth : "App isnt installed" error occur when you are using any user-feature or permission which not present on current device so try to check Manifest permissions – ρяσѕρєя K Sep 21 '14 at 08:07
  • there are no permissions required in my app. after installing the app,the installer crashes as soon as i try to open it using the open button that is shown at the end of an installation. and when i try to run it from my apps screen, 'app isn't installed' toast is shown. – Swapnil Harkanth Sep 21 '14 at 08:10

2 Answers2

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After some research i have found that it is due to YActiivity.

when you have updated it to be YActiivity. This causes Android to think the app isn't installed, as it cannot find an XActiivity in your app marked as the MAIN Activity.

You can solve it by removing home screen icon and re establishing it back

Check here for a more detailed info

Community
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Avinash Babu
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  • Pleease have a look at the link i have given..I bet it will solve ur problem..Wht you need to do is to removing home screen icon nd adding it once again – Avinash Babu Sep 21 '14 at 07:48
  • hey thanks for the link, but it was not what i was looking for. I am trying to open the app from my app screen and it isnt running, an 'app isnt installed' toast is showing up – Swapnil Harkanth Sep 21 '14 at 08:11
  • http://forum.xda-developers.com/galaxy-nexus/help/app-isnt-installed-error-phone-contacts-t1924845 – Avinash Babu Sep 21 '14 at 08:25
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If you did any change to launcher activity in mainfest then this android:exported="true" could be the cause.

<activity 
android:name=".MainActivity"
android:exported="true">
صلي علي محمد - Atef Farouk
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