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E04 : Add alert dialog for shouldShowRequestRational and refactor unu… #9

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E04 : Add alert dialog for shouldShowRequestRational and refactor unu… #9

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31 changes: 16 additions & 15 deletions app/src/main/java/cchcc/learn/amu/e04/E04Activity.kt
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Original file line number Diff line number Diff line change
Expand Up @@ -28,27 +28,28 @@ class E04Activity : AppCompatActivity() {
it.viewModel = viewModel
}

viewModel.pickContactAction.observe(this, Observer {
permissionOf(Manifest.permission.READ_CONTACTS).checkOrRequest permissionIsGranted@{

val intent = Intent(Intent.ACTION_PICK, ContactsContract.CommonDataKinds.Phone.CONTENT_URI)
startActivityWithResult(intent) { resultCode, data ->
if (resultCode == Activity.RESULT_OK && data?.data != null) {
val actionPermissionGrant: () -> Unit = {
val intent = Intent(Intent.ACTION_PICK, ContactsContract.CommonDataKinds.Phone.CONTENT_URI)
startActivityWithResult(intent) { resultCode, data ->
if (resultCode == Activity.RESULT_OK && data?.data != null) {

val cursor = contentResolver.query(data.data!!, null, null, null, null)
val nameAndPhone = cursor?.use {
it.moveToFirst()
val cursor = contentResolver.query(data.data!!, null, null, null, null)
val nameAndPhone = cursor?.use {
it.moveToFirst()

val name = it.getString(it.getColumnIndexOrThrow(ContactsContract.Contacts.DISPLAY_NAME))
val phone = it.getString(it.getColumnIndexOrThrow(ContactsContract.CommonDataKinds.Phone.DATA))
val name = it.getString(it.getColumnIndexOrThrow(ContactsContract.Contacts.DISPLAY_NAME))
val phone = it.getString(it.getColumnIndexOrThrow(ContactsContract.CommonDataKinds.Phone.DATA))

name to phone
} ?: "" to ""
name to phone
} ?: "" to ""

viewModel.nameAndPhone.value = nameAndPhone
}
viewModel.nameAndPhone.value = nameAndPhone
}
}
}

viewModel.pickContactAction.observe(this, Observer {
permissionOf(Manifest.permission.READ_CONTACTS).checkOrRequest(actionPermissionGrant) {}
})
}

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15 changes: 15 additions & 0 deletions app/src/main/java/cchcc/learn/amu/util/DialogUtil.kt
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Original file line number Diff line number Diff line change
@@ -0,0 +1,15 @@
package cchcc.learn.amu.util

import android.app.Activity
import android.content.DialogInterface
import androidx.appcompat.app.AlertDialog


fun Activity.showAlert() {
val alertDialog = AlertDialog.Builder(this).create()
alertDialog.setTitle("Permission Rationale")
alertDialog.setMessage("Show detail alert message about why this permission is needed.")
alertDialog.setButton(AlertDialog.BUTTON_NEUTRAL, "OK",
DialogInterface.OnClickListener { dialog, which -> dialog.dismiss() })
alertDialog.show()
}
18 changes: 9 additions & 9 deletions app/src/main/java/cchcc/learn/amu/util/UserPermission.kt
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Expand Up @@ -13,10 +13,6 @@ class UserPermission(private val activity: Activity, vararg permissions: String)
lateinit var isGrantedCallback: () -> Unit
lateinit var notGrantedCallback: () -> Unit

fun isGranted(): Boolean = perms.all { ContextCompat.checkSelfPermission(activity, it) == PackageManager.PERMISSION_GRANTED }

fun checkOrRequest(isGranted: () -> Unit) = checkOrRequest(isGranted) {}

/**
* 1. check if permission is granted
* 2. if permission is granted, callback `isGranted`, or request permission
Expand All @@ -30,11 +26,15 @@ class UserPermission(private val activity: Activity, vararg permissions: String)
if (permissionIsAllGranted) {
isGranted()
} else {
isGrantedCallback = isGranted
notGrantedCallback = notGranted
val requestCode = Math.abs((activity.hashCode() + isGranted.hashCode()).toShort().toInt())
activity.permissions.put(requestCode, this)
ActivityCompat.requestPermissions(activity, notGrantedPermissions, requestCode)
if(shouldShowRequestRational()) {
activity.showAlert()
} else {
isGrantedCallback = isGranted
notGrantedCallback = notGranted
val requestCode = Math.abs((activity.hashCode() + isGranted.hashCode()).toShort().toInt())
activity.permissions.put(requestCode, this)
ActivityCompat.requestPermissions(activity, notGrantedPermissions, requestCode)
}
}
}

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