App not Installed error when updating the app by installing updated apk file

[Thamaraikannan S]

I have installed latest Android Studio "Android Studio Dolphin | 2021.3.1 Patch 1" in my new laptop and copied existing App folder and its jks file.
I am able to generate Signed APK file in the new Android Studio after updating
versionName in app/build.gradle file. If I install the new apk in my mobile (where the app is already installed with previous versionName), it says "app is not installed" error.

In my old Android Studio, I was able to update versionName, generate apk file and able to update the app.

Could you please tell what could be the issue.

Note:
- my apk/app is installed in the mobile by enabling "allow from unknown sources".
- in old Android Studio, while generating Signed APK, there were options for Signature Version as V1 and V2. I used to enable both of them to generate the apk. but in the latest Android Studio, it is not shown. Could that be a reason ?

 

[maggiem2481]

Maybe it is happening due to this.

 

[Thamaraikannan S]

Maybe it is happening due to this.

happening due to what ? have you missed to add something?

 

[maggiem2481]

No.

 

[maggiem2481]

I don't think it is due to turning the "allow from unknown sources" option.

 

[Thamaraikannan S]

I don't think it is due to turning the "allow from unknown sources" option.

without turning that option on, mobile will not allow direct installation (not from playstore) the apk.

 

[Dannydet]

You can try uninstall of the app, then install the updated apk....

 

[Thamaraikannan S]

You can try uninstall of the app, then install the updated apk....

that solution will be annoying to ask all users who have installed the app. could you please let me know if there is any other solution available ?

 

[James_Watson]

I have installed latest Android Studio "Android Studio Dolphin | 2021.3.1 Patch 1" in my new laptop and copied existing App folder and its jks file.
I am able to generate Signed APK file in the new Android Studio after updating
versionName in app/build.gradle file. If I install the new apk in my mobile (where the app is already installed with previous versionName), it says "app is not installed" error.

In my old Android Studio, I was able to update versionName, generate apk file and able to update the app.

Could you please tell what could be the issue.

Note:
- my apk/app is installed in the mobile by enabling "allow from unknown sources".
- in old Android Studio, while generating Signed APK, there were options for Signature Version as V1 and V2. I used to enable both of them to generate the apk. but in the latest Android Studio, it is not shown. Could that be a reason ?

In addition to the 'versionName', have you increased the 'versionCode'?