I have created many debug APKs and tried installing them. It gets installed sometimes and sometimes shows "App installation issue".
If I go to Google Play Store Play Protect setting and turn off the "Scan device for security threats" then it gets installed smoothly.
Is there any option in Manifest or build.gradle file where I can override Play Protect setting so that the App gets installed smoothly.
The error which I receive is as follows:
App not installed Image
How this can be corrected programatically?
Some time debug Application is not displayed on luncher but there must be you can see it in setting > Install Application List so if you found that package in the list so first uninstall it for all user then you can install it the same issue I faced
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I recently created an android app. When I tried to debug my app on my phone, it worked. Then I generated the apk, and tried to execute it from the file browser, it doesn't work, and I have the following error message : "App not installed", despite having allowed the unknown source in the settings. I also tried with an official app. For that, I extracted the Apk with apk extractor, uninstalled the app, and then executed the apk: same error. I tried many solutions found on the web, but none of them worked :
I disabled play protect.
I reseted the app preferences in the settings.
I tried on my former phone and on my father's phone.
I updated the os on my phone (android 10 to android 12).
I have already installed many apps just by executing the apk on my phones (including my current one) and it's the first time i'm facing this problem.
Can you help me please ?
Debug build and Release build have different signatures so before installing "release app" you should uninstall "debug app".
Also check expiration date of your release signature and make sure it is a valid signature.
I generated APK by doing following in Android Studio: Build -> Generate Signed apk
I copied this APK in Phone's memory and launched it. It installed fine, but only for the first time. I then uninstalled the existing app and launched the same APK again, now it says "App Not Installed".
If I copy the same APK from my computer to this phone again, then again it cannot be installed anymore on this device.
I don't want to do with Play protect off on the device.
Is there a solution to installable the apk all the time?
Go to link And fill out the form. After about two weeks, if the app is OK, your problem will be resolved.
The web service protocol must be HTTPS.
Access permissions must be for a reason.
Etc
I generated release apk by following this link. For first time generated apk installed on android device successfully. but when i uninstall and install this apk again its showing error App not installed.
Please help :)
Go to settings -> Appliaction Manager and check if your application is showing in the list. Uninstall it properly for all users(if your mobile support multiple users). Then Try to install this again.
i am working on an app, the app installs fine first time then if i uninstall it from the phone after that the app wont install again until i change package name.
i have tried clearing cache of phone restarting it
when installing app using android studio it gives error like application installation failed installed failed conflicting provider
note that the first time app installs fine these issues are when i try to install it again or update it
and if i change the package name the app installs fine but then again i wont be able to update it
Except above recommendations, also there may be 2 possible reason for that.
1- Your device has another account (Guest account etc.) and your uninstallation not reflected to other account. You can try:
Settings -> Applications -> Find your application from list and Uninstall
2- If it is Play Protect Error
Open Google Play app -> Click Menu and choose Play Protect -> Try disable scan device and Improve harmful detection
This happened with me too. I had solved it by disabling instant run.
File > settings > Build, Execution, Development > Instant Run > disable instant run.
Try running your project again.
I am developing an app from so many days and i use my phone to test the app. So android studio always installs my app in my phone directly through ADB.
Today i made a signed apk from android studio and when i tried to install it. It gave me an error "App not installed - an existing package by the same name with a conflicting signature is already installed"
Check This Image :- http://i.stack.imgur.com/qumOm.png
So i uninstalled the old app and when i tried to install the signed apk it gave me error again"App not installed"
I Think my old app still left some Data in my phone.
So i used Titanium BackUp Manager and in first removed the app data and then uninstalled the old app.
This solved the problem and i was able to install my new app now.
Any,Other suggestions are welcome ??
You can get rid of the signature by removing /system/app/ folder from the device.
I also had issues installing gcam ports on my android device.
The above solution worked for me and I was able to install the app after removing
/system/app/GoogleCameraLegacy folder through TWRP recovery.