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I have a simple app that has just 1 button in the activity and this is my MainActivity.kt file code:
package ir.alirezapersonal.startup2
import android.Manifest
import android.content.pm.PackageManager
import android.os.Build
import android.os.Bundle
import android.util.Log
import androidx.activity.enableEdgeToEdge
import androidx.annotation.RequiresApi
import androidx.appcompat.app.AppCompatActivity
import androidx.core.app.ActivityCompat
import androidx.core.view.ViewCompat
import androidx.core.view.WindowInsetsCompat
import ir.alirezapersonal.startup2.databinding.ActivityMainBinding
class MainActivity : AppCompatActivity() {
private lateinit var binding: ActivityMainBinding
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
enableEdgeToEdge()
binding = ActivityMainBinding.inflate(layoutInflater)
setContentView(binding.root)
ViewCompat.setOnApplyWindowInsetsListener(findViewById(R.id.main)) { v, insets ->
val systemBars = insets.getInsets(WindowInsetsCompat.Type.systemBars())
v.setPadding(systemBars.left, systemBars.top, systemBars.right, systemBars.bottom)
insets
}
binding.btnRequestPermissions.setOnClickListener {
requestPermissions()
}
}
private fun hasWriteExternalStoragePermission() =
ActivityCompat.checkSelfPermission(this,
Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED
private fun hasLocationForegroundPermission() =
ActivityCompat.checkSelfPermission(this,
Manifest.permission.ACCESS_COARSE_LOCATION) == PackageManager.PERMISSION_GRANTED
private fun hasLocationBackgroundPermission() =
ActivityCompat.checkSelfPermission(this,
Manifest.permission.ACCESS_BACKGROUND_LOCATION) == PackageManager.PERMISSION_GRANTED
private fun requestPermissions() {
var permissionsToRequest = mutableListOf<String>()
if(!hasWriteExternalStoragePermission()){
permissionsToRequest.add(Manifest.permission.WRITE_EXTERNAL_STORAGE)
}
if(!hasLocationForegroundPermission()){
permissionsToRequest.add(Manifest.permission.ACCESS_COARSE_LOCATION)
}
if (!hasLocationBackgroundPermission()){
permissionsToRequest.add(Manifest.permission.ACCESS_BACKGROUND_LOCATION)
}
if(permissionsToRequest.isNotEmpty()){
ActivityCompat.requestPermissions(this, permissionsToRequest.toTypedArray(),0)
}
}
override fun onRequestPermissionsResult(
requestCode: Int,
permissions: Array<out String>,
grantResults: IntArray
) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults)
if(requestCode == 0 && grantResults.isNotEmpty()){
for(i in grantResults.indices){
if(grantResults[i] == PackageManager.PERMISSION_GRANTED){
Log.d("PermissionRequest", "${permissions[i]} granted.")
} else {
Log.d("PermissionRequest", "${permissions[i]} NOT granted.")
}
}
}
}
}
the problem is that when i click on the button the permission request is not prompted to the user. i have also addded permissions list in my manifest file:
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools">
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_BACKGROUND_LOCATION" />
<application
android:allowBackup="true"
android:dataExtractionRules="@xml/data_extraction_rules"
android:fullBackupContent="@xml/backup_rules"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/Theme.Startup2"
tools:targetApi="31">
<activity
android:name=".MainActivity"
android:exported="true">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
i am also tested this app on an android 13 and 14 device but didn’t solve the problem.
what could be the problem?
2
Answers
WRITE_EXTERNAL_STORAGE
If your app targets Build.VERSION_CODES.R or higher, this permission has no effect.
If your app is on a device that runs API level 19 or higher, you don’t need to declare this permission to read and write files in your application-specific directories returned by Context.getExternalFilesDir(String) and Context.getExternalCacheDir().
ACCESS_BACKGROUND_LOCATION
Allows an app to access location in the background. If you’re requesting this permission, you must also request either ACCESS_COARSE_LOCATION or ACCESS_FINE_LOCATION. Requesting this permission by itself doesn’t give you location access.
It looks like you’ve implemented most of the necessary code for requesting permissions, But still you can check below updated example.
Let’s revise the code to ensure permissions are requested correctly and the permission dialog appears. We’ll provide complete working code to handle permissions for all relevant Android versions.
Updated
MainActivity.ktThis code handles permissions for Android versions 6.0 (API 23) and above. It includes proper handling for
WRITE_EXTERNAL_STORAGE,ACCESS_FINE_LOCATION, andACCESS_BACKGROUND_LOCATION.Manifest File
AndroidManifest.xmlEnsure that you include all necessary permissions in your manifest
ActivityResultContracts.RequestMultiplePermissions() to handle
permission requests.
hasLocationForegroundPermission(), and
hasLocationBackgroundPermission() check if permissions are granted.
request flow is handled correctly based on Android version. For
Android 10 and above, it handles background location permissions
separately.
For Testing :
API levels to confirm the permission dialogs are shown correctly.
handle background location permissions properly, as it requires
separate handling compared to foreground permissions.
Updated
Additionally if above not work then check below one
This code includes the corrected requestPermissions function tohandle background location permission correctly, along with the other necessary methods and setup for handling permissions in your MainActivity.
This code should cover the permissions correctly for all versions of Android that you’re targeting.