APK File works in android emulator but won't install on my device

Question

I'm new to Android Studio (downloaded it yesterday on my Windows 7 machine) and just finished creating an app using Kotlin. It works properly on the Android Emulator, but when I build a signed APK file and try installing it on my Samsung S7 (Android 8.0.0) phone it shows the mysterious error "App not installed".

I noticed there's a red X mark near MainActivity in the top bar, maybe it has something to do with the problem? It doesn't prevent me from building...

Red X Screenshot

Previous builds of the same app installed properly. The only thing I changed before it started breaking is the location of the AVD folder (using this) from the C drive to the D drive, since I ran out of memory there. I deleted all virtual devices, created the environment variable then created the virtual devices again.

Things I already tried without any luck:

The top 5 solutions here
Deleting debug.keystore
Cleaning and rebuilding the project
Changing the build variant to "Release"

EDIT: I created a new project and copied my scripts to there, and it now works properly. Not really a solution since this took a lot of time, but it solved the problem.

There should be some information in the logcat regarding that issue — shkschneider, Apr 30 '19 at 08:19

score 2 · Accepted Answer · answered May 03 '19 at 10:14

2

You should have to create new sample project and check it will be working or not

answered May 03 '19 at 10:14

Adnan Yousaf

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I created a new project and copied my scripts to there, and it now works properly. Not really a solution since this took a lot of time, but it solved the problem. – Bip901 May 03 '19 at 14:50

score 0 · Answer 2 · answered Apr 30 '19 at 07:28

0

If you have install apk before in your device you can not install it again

For fix that

1) You can uninstall app from device and reinstall from apk.

2) You can change versionCode in build.gradle(app)

defaultConfig {
    applicationId your_package_name   
    versionCode 2 //try to increase every time
    versionName "1.0.0" //no need to change but better change it
    //other codes
}

answered Apr 30 '19 at 07:28

Radesh

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@Bip901 did you use local database (sqlite) in your project? – Radesh Apr 30 '19 at 07:47

score 0 · Answer 3 · answered Apr 30 '19 at 07:29

0

Select the MainActivity(with X mark)
A dropdown will appear
Select your application Module (By Default it is app)
Run the Project (It should install the apk and run on your device)

Hope it helps!!

answered Apr 30 '19 at 07:29

Firoz Memon

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Thank you for you answer. I selected "App", but it, too, has a red X mark on it. I built the APK again with "App" selected, but the problem persists. – Bip901 Apr 30 '19 at 07:45

score 0 · Answer 4 · answered Apr 30 '19 at 07:38

0

Try it by delete .iml file from your project directory and rebuild project

Have you restart your system after updating location of AVD ?

answered Apr 30 '19 at 07:38

Adnan Yousaf

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1
6

Yes, I have restarted my system after updating the AVD location. Just tried deleting the .iml file and rebuilding, and unfortunately that didn't work either. – Bip901 Apr 30 '19 at 07:48
1

then you should have to create new sample project and check it will be working or not – Adnan Yousaf Apr 30 '19 at 07:57
You should convert this comment into an answer, that's what I ended up doing – Bip901 May 03 '19 at 10:10
@Bip901 i have added the new answer – Adnan Yousaf May 03 '19 at 10:15

APK File works in android emulator but won't install on my device

4 Answers4