App Not Installed

I'm having problems when i try to install my apk in release mode, if I donwload the debug file, it works ok, but if I try to install the release file, it just says me 'App not inst

Solution 1:

If you installed debug build in your mobile.. then you need to uninstall it and install signed build.

If it still not installed then your Application related data might be still there in your memory.. ex) if you created any DB from your Application then you need to delete that from memory and try to install your signed build again.

If it still not installed and if you are using lollipop devices.. your Application might be installed in other users account too.. you to switch to other users and go to Settings->Apps->your_application and uninstall it. even check Guest user. your application might be hiding in that too..

I had this issue.. just follow these steps.. then your application can be installed.. :)

Solution 2:

I had also same issue when I try to install release build from playstore.

Answer : The reason for the issues is that I did not increment the versionCode in build.gradle of module before uploading the release build to playstore.

Solution 3:

If it's Android 9 just try to disabling Google Play Protect. In my case it was when I uninstall some version of App and tried to install new one. I've got the error 'App not installed'.

Open Play Store -> Menu button (right top button) -> Disable the options Scan device for security threats

Solution 4:

First of all open Build-Variants window (left-bottom corner), you can see modules that are part of your app in a two column(named as module and build variants) table, change all modules build variants to release, then in your build.gradle file change minifyEnabled from true to false:

buildTypes {
    release {
        minifyEnabled false
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
    }
}

now try to sign your apk with a valid release key, if your device already has an apk installed with different key or its debug version, uninstall it and install your release version (when users attempt to update your app it wont be a problem, because you certainly will upload a release version in market with same key as before).

Solution 5:

In my case, it was not working because I was trying to install apk file, over an .aab package file.

The update between a version installed from the store released in aab, was not possibile to be updated to the apk file.

In the same time, building an apk file from the master branch, and then updating it to apk works fine.