Error using APK

[Kleyber_Derick]

Hi All,

After 4 years away from App Inventor, I'm back using it. So I'm facing old problems that I don't remember how to solve.

I created an APK in order to run with no internet connection (no WIFI, no Mobile) and to run for the first time, I save login data into a SQLite database (with internet connect), and after this I discinnect internet to make login again, but using login data from SQLite database. But when I do this test without internet, I receive the message below:

Where am I wrong?

[ABG]

Recent Android versions are paranoid.

Reassure your Android O/S in its Settings app that your app has permission to do what you need.

If you are developing for others, there are blocks in Screen1 to have your app ask for permissions.

If you are using the Companion, be sure it is up to date.

[Kleyber_Derick]

Thanks for replying @ABG. Using the Companion, it works fine. Of course I cannot test without internet, because of it I am generating APK to test the app without internet.

@ABG

If you are developing for others, there are blocks in Screen1 to have your app ask for permissions.

Thanks, noted.

Just FYI, I am using a Samsung with Android 8.0

[Anke]

@ABG

there are blocks in Screen1 to have your app ask for permissions

Huge apk file and weird permissions during installation on the device

If you create an empty app with AI2 (without any property / action / function), it has a minimum size of 3.3 MB. See e.g. here: Is there anyway to reduce final apk build size please? The (non-dangerous) standard permissions are: <uses-permission android: name = "android.permission.INTERNET" /> <uses-permission android: name = "android.permission.ACCESS_NETWORK_STATE" /> <uses-permission android: name = "android.permission.ACCESS_WIFI_STATE" /> These are always granted automatically …

@Kleyber_Derick "Using the Companion, it works fine."

Companion declares ACCESS_WIFI_STATE but the compiled app (APK) does not.

[Anke]

@Anke

but the compiled app (APK) does not

Kodular does.

[Kleyber_Derick]

Good to see you again @Anke. If you remember, I was one of Moderators in Kodular forum (it was some years ago).

Thank you!

[Anke]

@Kleyber_Derick

If you remember, I was one of Moderators in Kodular forum

Of course, I have a pretty good memory - at least for important things.

[Kleyber_Derick]

@Anke

Of course, I have a pretty good memory - at least for important things.

That's very good.

Well I'm back but now with App Inventor and of course I don't have a memory like yours... because of it I am facing this kind of problem.

[Anke]

@Kleyber_Derick

I am facing this kind of problem

Declare this permission
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>
after decompiling it in the Manifest, recompiled it and the APK should work.

[Kleyber_Derick]

Great, @Anke . Just a question: If I make any change in my project and generate APK again, the manifest file will not be changed too?

[Anke]

@Kleyber_Derick

If I make any change in my project and generate APK again, the manifest file will not be changed too?

You need to do this at the end (after all changes have been made).

[Kleyber_Derick]

Ahhh ok. Noted. Thank you!!!

[Anke]

Try this
WifiState.aix (3.7 KB)

It declares this permission in the Manifest.

[Kleyber_Derick]

Great, @Anke . I'll test it right now and tell you my results.

Thanks again,

[Kleyber_Derick]

@Anke, do you have an example about how to use it?

[Anke]

You just have to drag the extension into the screen.
Did you get the same error?

[Kleyber_Derick]

@Anke

You just have to drag the extension into the screen.

So I don't have to use any of the blocks?

[Anke]

@Kleyber_Derick

I don't have to use any of the blocks?

Yes.

[Kleyber_Derick]

Fantastic!!! Thank you!!! I will test the APK right now and tell you my results.

[Anke]

Oh, I just see that there is an event. (My mistake, but that doesn't matter. I was a little careless.)