Android apk Installation failed. Installation package error, unable to install

Question

I am developing an app, if I run from android studio in to my device, it is running absolutely fine. If I put my apk into google drive and share with others, it is showing error ("Android apk Installation failed. Installation package error, unable to install.") when they try to install the app. It's not a signed apk. It's still in prototype phase (debug mode).

Please let me know where I am doing wrong.

Try this solution: https://stackoverflow.com/a/34266270/4406346 — Iffat Fatima, Feb 13 '19 at 05:09
Before install the APK, make sure to uninstall any older version of same application. — Farid Haq, Feb 13 '19 at 05:11
@IffatFatima It's still in debug mode. I don't have a signed key. — Rajeev Shetty, Feb 13 '19 at 05:19
Possible duplicate of [Cannot install signed apk to device manually, got error "App not installed"](https://stackoverflow.com/questions/34265897/cannot-install-signed-apk-to-device-manually-got-error-app-not-installed) — Firdous nath, Feb 13 '19 at 05:26
Make sure minimum SDK version is less or equal to the device android version in which you are installing the app — Firdous nath, Feb 13 '19 at 05:29
@Firu Its not a signed apk . It's just in prototype phase. Yes i have kept minimum SDK version less only than the device. I kept it 17 and device is 5.1 android version. — Rajeev Shetty, Feb 13 '19 at 05:35
you should generate a release apk if you want to install it outside your development environment — oziomajnr, Feb 13 '19 at 05:38
As @Ogbe suggested you need to generate signed APK if you want to install it outside the dev environment. Or else disable Instant Run in Android Studio and re-build the project and try to install debug APK. But I don't think this procedure works in recent versions of Android Studio IDE. — Shashanth, Feb 13 '19 at 05:54

score 0 · Answer 1 · answered Feb 13 '19 at 09:51

I found the solution for the problem I faced. Some solutions i tried :

First I tried with generating a signed release apk. Again here I faced same issue working fine when ran from android studio but getting error ("Android apk Installation failed. Installation package error, unable to install." / "app not installed." depending on the device ) , when tried to install app from google drive.

I checked installing app from command line using command " adb install app-release.apk ". Then I got the error :

app-release.apk: 1 file pushed. 4.3 MB/s (1246134 bytes in 0.275s) pkg: /data/local/tmp/app-release.apk Failure [INSTALL_FAILED_TEST_ONLY]

This is the link for the above issue link

And the solution for this issue was in same link. The solution finally worked for me was

android.injected.testOnly=false

This line we need to add in gradle.properties file.

Android apk Installation failed. Installation package error, unable to install

1 Answers1