Ask user to disable battery optimisation

on the main activity if needed

app/src/main/java/org/unifiedpush/distributor/nextpush/activities/MainActivity.kt

@@ -3,12 +3,16 @@ package org.unifiedpush.distributor.nextpush.activities
 import android.content.Context
 import android.content.Intent
 import android.os.Bundle
+import android.os.PowerManager
+import android.provider.Settings
 import android.util.Log
 import android.view.Menu
 import android.view.MenuItem
 import android.view.View
 import android.widget.* // ktlint-disable no-wildcard-imports
 import androidx.appcompat.app.AppCompatActivity
+import androidx.core.view.isGone
+import com.google.android.material.card.MaterialCardView
 import org.unifiedpush.distributor.nextpush.R
 import org.unifiedpush.distributor.nextpush.account.Account
 import org.unifiedpush.distributor.nextpush.account.Account.getAccount
@@ -27,7 +31,6 @@ import java.lang.String.format
 class MainActivity : AppCompatActivity() {
 
     private lateinit var listView: ListView
-    private var showLogout = false
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
@@ -41,11 +44,15 @@ class MainActivity : AppCompatActivity() {
 
         findViewById<TextView>(R.id.main_account_desc).text =
             format(getString(R.string.main_account_desc), getAccount(this)?.name)
-        showLogout = true
         invalidateOptionsMenu()
         RestartWorker.startPeriodic(this)
     }
 
+    override fun onStart() {
+        super.onStart()
+        showOptimisationWarning()
+    }
+
     override fun onWindowFocusChanged(hasFocus: Boolean) {
         super.onWindowFocusChanged(hasFocus)
         if (hasFocus) {
@@ -73,6 +80,17 @@ class MainActivity : AppCompatActivity() {
         }
     }
 
+    private fun showOptimisationWarning() {
+        val powerManager = getSystemService(Context.POWER_SERVICE) as PowerManager
+        if (!powerManager.isIgnoringBatteryOptimizations(packageName)) {
+            findViewById<MaterialCardView>(R.id.card_battery_optimization).isGone = false
+            findViewById<Button>(R.id.button_disable_optimisation).setOnClickListener {
+                startActivity(Intent(Settings.ACTION_IGNORE_BATTERY_OPTIMIZATION_SETTINGS))
+            }
+        } else {
+            findViewById<MaterialCardView>(R.id.card_battery_optimization).isGone = true
+        }
+    }
     private fun restart() {
         Log.d(TAG, "Restarting the Listener")
         FailureHandler.clearFails()

app/src/main/res/layout/content_main.xml

@@ -1,11 +1,59 @@
 <?xml version="1.0" encoding="utf-8"?>
 <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
-    xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     app:layout_behavior="@string/appbar_scrolling_view_behavior">
 
+    <com.google.android.material.card.MaterialCardView
+        android:id="@+id/card_battery_optimization"
+        android:clickable="true"
+        android:focusable="true"
+        android:checkable="true"
+        android:layout_height="wrap_content"
+        android:layout_width="match_parent"
+        android:padding="16dp"
+        android:layout_margin="16dp"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        android:visibility="gone" >
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:orientation="vertical">
+            <LinearLayout
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:orientation="vertical"
+                android:paddingTop="16dp"
+                android:paddingHorizontal="16dp"
+                android:paddingBottom="0dp" >
+
+                <TextView
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="@string/card_disable_optimisation_description" />
+
+            </LinearLayout>
+
+            <LinearLayout
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+
+                android:orientation="horizontal">
+                <com.google.android.material.button.MaterialButton
+                    android:id="@+id/button_disable_optimisation"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:layout_marginEnd="8dp"
+                    android:text="@string/button_disable_optimisation"
+                    style="?attr/borderlessButtonStyle" />
+
+            </LinearLayout>
+        </LinearLayout>
+    </com.google.android.material.card.MaterialCardView>
+
     <TextView
         android:id="@+id/main_account_title"
         android:layout_width="0dp"
@@ -16,7 +64,7 @@
         android:text="@string/main_account_title"
         android:textAppearance="@style/TextAppearance.AppCompat.Large"
         app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toTopOf="parent" />
+        app:layout_constraintTop_toBottomOf="@id/card_battery_optimization" />
 
     <TextView
         android:id="@+id/main_account_desc"

app/src/main/res/values/strings.xml

@@ -37,4 +37,6 @@
     <string name="login_hint_nextcloud_root_url">Nextcloud root url</string>
     <string name="login_button_sign_in">Sign in</string>
     <string name="login_show_password_img_description">Show password</string>
+    <string name="button_disable_optimisation">Disable optimisation</string>
+    <string name="card_disable_optimisation_description">To ensure the app functions properly, it is important to disable battery optimization. This will prevent the app from being put to sleep and causing delays in notifications.</string>
 </resources>