Android Question Button install disabled !!!

[vecino]

Hi, today I went to install one of my applications on some new tablets and I found this problem.
Why can it happen?
Regards.

 

[npsonic]

Do you use Twilight? It's problem caused by permission "Draw over other apps"
Some of your running apps is behind the problem.

 

[Alexander Stolte]

I have already had that. Only after I restarted the device I could install the app.

 

[vecino]

Hello, there are 4 new tablets for a client.
I have not installed anything yet, I have only enabled "Unknown sources" and then I tried to install my application.
Twilight does not appear among the applications that are installed.

 

[LucaMs]

Try updating (reinstalling) Google Play Store.

 

[npsonic]

I'm still somewhat sure that you have app with the "Draw over other apps" setting enabled that interfere the install process.

 

[Alexander Stolte]

Try updating (reinstalling) Google Play Store.

And then he downloads the app store, from the app store (mindblow)

 

[vecino]

Hello, friends, I have been doing tests and the problem seems to be in MY applications.
I can install other applications from the "play store".
I can install other applications from USB.
I can install my apps that do not need to access GPS, Network, etc.
I can NOT install my applications if they need to access gps, network, sdcard, etc.
The problem is my applications !!!

These tablets have android 7.x
However, they are installed on other tablets with android 8.x and work well.

What I can do?

 

[Erel]

I don't think that it is related to your app. You can change the package name to test it.

It usually happens when there is another app that is allowed to draw over the screen.

 

[vecino]

Hello again.
I finally found the problem, but I do not understand it. I hope someone explains it to me.
These tablets that have android 7.1.1
My applications can only be installed if I compile them by typing in "Manifest editor" android:targetSdkVersion="26"
Only 26, nothing more than 26. The install button is not enabled if I write another number.
However, in other tablets and smartphones with android (4, 5, 6, 7 and 8) I can install my applications without problems.
Why?

 

[vecino]

I forgot to say that my applications install them using usb or sending it by email and then running the apk.
I do not use the play store.

 

[moster67]

Perhaps you need to, in settings and apps, set permissions that chrome or others apps, are allowed to install apps from unknown sources. I had to do that with Gmail app.

 

[vecino]

Perhaps you need to, in settings and apps, set permissions that chrome or others apps, are allowed to install apps from unknown sources. I had to do that with Gmail app.

Thanks, it's the first thing I did when turning on the tablets.

 

[vecino]

Has anyone had this problem?

 

[npsonic]

Has anyone had this problem?

If it is not any other app with "Draw over other apps" permission that is preventing you to install, it must be something in your own app.
Maybe some library you use or something else that is not compatible with the new devices.

 

[npsonic]

I'm just guessing, but you most likely are using library that is architecture specific.

 

[vecino]

Thank you very much to all.
Keep investigating.
Regards.

 

[aidymp]

That is a common problem on Amazon tablets too. The trick is to turn the screen off then on, and the button is available again.

 

[vecino]

Oh, I have already sold other tablets to the customer and he returned the other ones to the store.
Thanks for the information, I'll keep it in mind next time.