Last active
January 10, 2022 02:23
-
-
Save whileloop99/d8bc8b2e62d53226b88703798ea98c74 to your computer and use it in GitHub Desktop.
Kotlin: Better Way to Request Runtime Permissions
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| package your.business | |
| import android.content.pm.PackageManager | |
| import android.os.Bundle | |
| import androidx.activity.result.ActivityResultLauncher | |
| import androidx.activity.result.contract.ActivityResultContracts | |
| import androidx.core.app.ActivityCompat | |
| import androidx.fragment.app.Fragment | |
| import androidx.fragment.app.FragmentActivity | |
| import kotlin.coroutines.resume | |
| import kotlin.coroutines.suspendCoroutine | |
| /** | |
| * Request permissions | |
| * | |
| * Usage: | |
| * val allGranted = requestAppPermissions(context, Manifest.permission.CAMERA, Manifest.permission.RECORD_AUDIO) { notGrantedPermissions -> | |
| * // Some error messages? | |
| * } | |
| * | |
| * if (allGranted) { | |
| * startCamera() | |
| * } | |
| */ | |
| suspend fun requestPermissions( | |
| activity: FragmentActivity, | |
| vararg permissions: String, | |
| nonShowRequestPermissionRationaleHandler: ((List<String>) -> Unit)? = null | |
| ) = suspendCoroutine<Boolean> { emitter -> | |
| val nonShowRequestPermissions = mutableListOf<String>() | |
| val nonGrantedPermissions = mutableListOf<String>() | |
| var allGranted = true | |
| permissions.forEach { perm -> | |
| val granted = ActivityCompat.checkSelfPermission(activity, perm) == PackageManager.PERMISSION_GRANTED | |
| if (!granted) { | |
| allGranted = false | |
| if (ActivityCompat.shouldShowRequestPermissionRationale(activity, perm)) { | |
| nonShowRequestPermissions.add(perm) | |
| } else { | |
| nonGrantedPermissions.add(perm) | |
| } | |
| } | |
| } | |
| if (allGranted) { | |
| emitter.resume(allGranted) | |
| return@suspendCoroutine | |
| } | |
| class RequestPermissionFragment : Fragment() { | |
| lateinit var activityResultLauncher: ActivityResultLauncher<Array<String>> | |
| override fun onCreate(savedInstanceState: Bundle?) { | |
| super.onCreate(savedInstanceState) | |
| activityResultLauncher = registerForActivityResult(ActivityResultContracts.RequestMultiplePermissions()) { resultMap -> | |
| allGranted = resultMap.values.all { true } | |
| if (nonShowRequestPermissions.isNotEmpty()) { | |
| allGranted = false | |
| nonShowRequestPermissionRationaleHandler?.invoke(nonShowRequestPermissions) | |
| } | |
| emitter.resume(allGranted) | |
| activity.supportFragmentManager.beginTransaction().remove(this).commit() | |
| } | |
| activityResultLauncher.launch(nonGrantedPermissions.toTypedArray()) | |
| } | |
| } | |
| activity.supportFragmentManager.beginTransaction().add(0, RequestPermissionFragment()).commit() | |
| } |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment