Develop Reference

My application doesn't use the internet connection on my Samsung J4 core so I cannot access database. It returns com.android.volley.TimeOutError

I have included these lines in my manifest file:
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE/>
<uses-permission android:name="android.permission.INTERNET/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE/>
<uses-permission android:name="android.permission.CHANGE_NETWORK_STATE/>

READ_PHONE_STATE permission seems to be actively rejected in Android 11

I have an application with following permissions in Manifest:
<uses-permission android:name="android.permission.READ_CALL_LOG" />
<uses-permission android:name="android.permission.CALL_PHONE" />
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
<uses-permission android:name="android.permission.ANSWER_PHONE_CALLS" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
I manually enabled all permissions through Settings in an Android 11 mobile. However, if I use ActivityCompat.checkSelfPermission(this,(Manifest.permission.READ_PHONE_STATE)) to check if READ_PHONE_STATE permission has been granted, the result is always PERMISSION_DENIED.
I then used ActivityCompat.requestPermissions(this, arrayOf(Manifest.permission.READ_PHONE_STATE), 102), which simply calls onRequestPermissionsResult with grant result PERMISSION_DENIED immediately.
I reproduced this on two Android 11 devices (one physical, one emulator), and I tried changing the package name, uninstalling and reinstalling the app etc.

I figured out what went wrong. One of the libraries I was including had this:
Library's Manifest
<uses-permission
android:name="android.permission.READ_PHONE_STATE"
android:maxSdkVersion="29" />
and even though I defined this permission in my app manifest, the maxSdkVersion got into my app.
The solution is to remove the maxSdkVersion property in your app:
App's Manifest
<uses-permission
android:name="android.permission.READ_PHONE_STATE"
tools:remove="android:maxSdkVersion" />

Uploading app on playstore but the response is permissions that require a privacy policy: (android.permission.CAMERA)

Uploading app on playstore but it gives me the error below:
Your APK or Android App Bundle is using permissions that require a privacy policy: (android.permission.CAMERA)
My permissions on androidmanifest are as follows:
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" tools:node="remove"/>
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" tools:node="remove"/>
<uses-permission android:name="android.permission.ACCESS_BACKGROUND_LOCATION" tools:node="remove"/>
<uses-permission android:name="android.permission.CALL_PHONE" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.VIBRATE" />
What would be the problem here

Enter your privacy policy url into playstore, see here Apps using these permissions in an APK (android.permission.GET_ACCOUNTS ) are required to have a *privacy policy* set
Also consider, one of the library that you are using can use the camera permission or that error might be buggy, but for gps permission you still need to add privacy policy url.

You will also need to go to Google play console and input the policy url for the app.

No permission to write on android emulator

I have been trying to download a file from a url.
I have set the permissions in my android manifest file like so,
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.CALL_PHONE" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
I am using a library called Adavnced WebView to handle downloads:
AdvancedWebView.handleDownload(view.getContext(),"https://static1.squarespace.com/static/57752cbed1758e541bdeef6b/t/58d91311ff7c50b172946ee5/1490621221735/PreKGuide_2017_English_032417+%281%29.pdf" , "abc.txt");
I get an error when I try to download. It clearly says that the app doesn't have permission to write to storage path. How can I set permission to write? What am I missing here? Please help.
java.lang.SecurityException: No permission to write to /storage/emulated/0/Download/abc.txt: Neither user 10147 nor current process has android.permission.WRITE_EXTERNAL_STORAGE.

You need the runtime permission, check the documentation.

Why my app requesting media permission when installing?

I released my application in Google Play and when trying to install it it requesting access to Media although I didn't set that in the Manifest file
Here are my permissions in the Manifest file
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />
<uses-permission android:name="android.permission.WAKE_LOCK" />
<uses-permission android:name="android.permission.VIBRATE" />
when in installing my app from the phone it asks from media access:
but when I open my app in the desktop browser it doesn’t show Media permission with the other permissions:

There was android.permission.WRITE_EXTERNAL_STORAGE permission in my app but i removed it and updated my app yesterday but Google Play still requesting Media access when trying to install it so i cleared Google Play's cache and tried again and now it doesn't request that permission any more . Thank you