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MihaiCristianCondreaMihaiCristianCondrea
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Extend quiz with reminders and results
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+188
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+188
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‎app/src/main/AndroidManifest.xml

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@@ -327,6 +327,10 @@
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android:label="@string/quiz_title"
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android:parentActivityName=".ui.screens.quiz.QuizActivity" />
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<receiver
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android:name=".notifications.receivers.QuizReminderReceiver"
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android:exported="false" />
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<service
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android:name="androidx.appcompat.app.AppLocalesMetadataHolderService"
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android:enabled="false"

‎app/src/main/assets/quiz_questions.json

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"question": "Which file declares your app's activities?",
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"options": ["build.gradle", "AndroidManifest.xml", "strings.xml", "MainActivity.java"],
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"answer": 1
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},
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{
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"question": "Where do you store string resources?",
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"options": ["AndroidManifest.xml", "build.gradle", "strings.xml", "colors.xml"],
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"answer": 2
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},
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{
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"question": "Which layout allows positioning views relative to others?",
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"options": ["LinearLayout", "ConstraintLayout", "FrameLayout", "TableLayout"],
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"answer": 1
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},
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{
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"question": "What component shows a scrollable list of items?",
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"options": ["RecyclerView", "TextView", "ImageView", "Button"],
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"answer": 0
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}
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]

‎app/src/main/java/com/d4rk/androidtutorials/java/notifications/managers/QuizReminderManager.java

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package com.d4rk.androidtutorials.java.notifications.managers;
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import android.app.AlarmManager;
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import android.app.PendingIntent;
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import android.content.Context;
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import android.content.Intent;
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import com.d4rk.androidtutorials.java.notifications.receivers.QuizReminderReceiver;
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import java.util.concurrent.TimeUnit;
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/**
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* Utility for scheduling daily quiz reminder notifications.
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*/
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public class QuizReminderManager {
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private final AlarmManager alarmManager;
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private final PendingIntent reminderIntent;
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public QuizReminderManager(Context context) {
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alarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
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reminderIntent = PendingIntent.getBroadcast(
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context,
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1,
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new Intent(context, QuizReminderReceiver.class),
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PendingIntent.FLAG_IMMUTABLE
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);
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}
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/** Schedule a repeating daily reminder. */
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public void scheduleDailyReminder() {
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long trigger = System.currentTimeMillis() + TimeUnit.DAYS.toMillis(1);
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alarmManager.setRepeating(
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AlarmManager.RTC_WAKEUP,
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trigger,
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TimeUnit.DAYS.toMillis(1),
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reminderIntent
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);
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}
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}

‎app/src/main/java/com/d4rk/androidtutorials/java/notifications/receivers/QuizReminderReceiver.java

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package com.d4rk.androidtutorials.java.notifications.receivers;
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import android.content.BroadcastReceiver;
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import android.content.Context;
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import android.content.Intent;
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import androidx.work.OneTimeWorkRequest;
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import androidx.work.WorkManager;
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import com.d4rk.androidtutorials.java.notifications.workers.QuizReminderWorker;
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/**
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* BroadcastReceiver that enqueues a {@link QuizReminderWorker}.
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*/
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public class QuizReminderReceiver extends BroadcastReceiver {
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@Override
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public void onReceive(Context context, Intent intent) {
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OneTimeWorkRequest request = new OneTimeWorkRequest.Builder(
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QuizReminderWorker.class)
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.build();
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WorkManager.getInstance(context).enqueue(request);
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}
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}

‎app/src/main/java/com/d4rk/androidtutorials/java/notifications/workers/QuizReminderWorker.java

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package com.d4rk.androidtutorials.java.notifications.workers;
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import android.app.NotificationChannel;
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import android.app.NotificationManager;
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import android.app.PendingIntent;
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import android.content.Context;
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import android.content.Intent;
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import android.os.Build;
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import androidx.annotation.NonNull;
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import androidx.annotation.RequiresApi;
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import androidx.core.app.NotificationCompat;
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import androidx.work.Worker;
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import androidx.work.WorkerParameters;
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import com.d4rk.androidtutorials.java.R;
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import com.d4rk.androidtutorials.java.ui.screens.quiz.QuizActivity;
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/**
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* Worker that displays the daily quiz reminder notification.
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*/
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public class QuizReminderWorker extends Worker {
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public QuizReminderWorker(@NonNull Context context, @NonNull WorkerParameters params) {
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super(context, params);
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}
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@RequiresApi(api = Build.VERSION_CODES.O)
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@NonNull
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@Override
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public Result doWork() {
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NotificationManager manager = (NotificationManager) getApplicationContext()
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.getSystemService(Context.NOTIFICATION_SERVICE);
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String channelId = "quiz_reminder_channel";
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NotificationChannel channel = new NotificationChannel(
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channelId,
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getApplicationContext().getString(R.string.quiz_reminder_title),
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NotificationManager.IMPORTANCE_HIGH
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);
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manager.createNotificationChannel(channel);
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Intent intent = new Intent(getApplicationContext(), QuizActivity.class);
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PendingIntent pendingIntent = PendingIntent.getActivity(
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getApplicationContext(), 0, intent, PendingIntent.FLAG_IMMUTABLE);
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NotificationCompat.Builder builder = new NotificationCompat.Builder(getApplicationContext(), channelId)
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.setSmallIcon(R.drawable.ic_check_circle)
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.setContentTitle(getApplicationContext().getString(R.string.quiz_reminder_title))
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.setContentText(getApplicationContext().getString(R.string.quiz_reminder_body))
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.setAutoCancel(true)
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.setContentIntent(pendingIntent);
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manager.notify(1001, builder.build());
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return Result.success();
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}
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}

‎app/src/main/java/com/d4rk/androidtutorials/java/ui/screens/main/MainActivity.java

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import com.d4rk.androidtutorials.java.databinding.ActivityMainBinding;
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import com.d4rk.androidtutorials.java.notifications.managers.AppUpdateNotificationsManager;
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import com.d4rk.androidtutorials.java.notifications.managers.AppUsageNotificationsManager;
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import com.d4rk.androidtutorials.java.notifications.managers.QuizReminderManager;
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import com.d4rk.androidtutorials.java.ui.components.navigation.BottomSheetMenuFragment;
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import com.d4rk.androidtutorials.java.ui.screens.startup.StartupActivity;
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import com.d4rk.androidtutorials.java.ui.screens.startup.StartupViewModel;
@@ -258,6 +259,8 @@ protected void onResume() {
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}
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AppUsageNotificationsManager appUsageNotificationsManager = new AppUsageNotificationsManager(this);
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appUsageNotificationsManager.scheduleAppUsageCheck();
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QuizReminderManager quizReminderManager = new QuizReminderManager(this);
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quizReminderManager.scheduleDailyReminder();
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appUpdateNotificationsManager.checkAndSendUpdateNotification();
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checkForImmediateUpdate();
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}

‎app/src/main/java/com/d4rk/androidtutorials/java/ui/screens/quiz/QuizActivity.java

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import com.d4rk.androidtutorials.java.databinding.ActivityQuizBinding;
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import com.d4rk.androidtutorials.java.utils.EdgeToEdgeDelegate;
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import com.google.android.material.dialog.MaterialAlertDialogBuilder;
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import android.view.LayoutInflater;
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import android.view.View;
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import android.widget.TextView;
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import com.airbnb.lottie.LottieAnimationView;
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/**
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* Activity that displays a simple multiple-choice quiz.
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}
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viewModel = new ViewModelProvider(this).get(QuizViewModel.class);
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if (viewModel.getTotalQuestions() == 0) {
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new MaterialAlertDialogBuilder(this)
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.setMessage(R.string.quiz_no_more_questions)
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.setPositiveButton(android.R.string.ok, (d, w) -> finish())
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.setCancelable(false)
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.show();
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return;
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}
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showQuestion(viewModel.getCurrentQuestion());
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binding.buttonNext.setOnClickListener(v -> onNextClicked());
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private void showResult() {
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int score = viewModel.getScore().getValue();
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int total = viewModel.getTotalQuestions();
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View view = LayoutInflater.from(this).inflate(R.layout.dialog_quiz_result, null, false);
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TextView textResult = view.findViewById(R.id.text_result);
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textResult.setText(getString(R.string.quiz_finished, score, total));
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LottieAnimationView animationView = view.findViewById(R.id.animation_success);
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animationView.playAnimation();
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new MaterialAlertDialogBuilder(this)
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.setMessage(getString(R.string.quiz_finished, score, total))
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.setView(view)
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.setPositiveButton(android.R.string.ok, (d, w) -> finish())
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.setCancelable(false)
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.show();

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

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<?xml version="1.0" encoding="utf-8"?>
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<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
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xmlns:app="http://schemas.android.com/apk/res-auto"
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android:layout_width="match_parent"
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android:layout_height="wrap_content"
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android:orientation="vertical"
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android:padding="16dp">
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<com.airbnb.lottie.LottieAnimationView
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android:id="@+id/animation_success"
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android:layout_width="96dp"
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android:layout_height="96dp"
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android:layout_gravity="center_horizontal"
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app:lottie_autoPlay="true"
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app:lottie_loop="false"
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app:lottie_rawRes="@raw/anim_quiz_success" />
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<TextView
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android:id="@+id/text_result"
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android:layout_width="wrap_content"
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android:layout_height="wrap_content"
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android:layout_gravity="center_horizontal"
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android:layout_marginTop="8dp"
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android:textAppearance="@style/TextAppearance.Material3.BodyMedium" />
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</LinearLayout>

‎app/src/main/res/raw/anim_quiz_success.json

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‎app/src/main/res/values/strings.xml

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<string name="quiz_title">Quiz</string>
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<string name="next_question">Next Question</string>
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<string name="quiz_finished">Quiz complete! Your score: %1$d/%2$d</string>
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<string name="quiz_no_more_questions">No more questions, check further updates for more.</string>
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<string name="quiz_reminder_title">Daily Quiz Reminder</string>
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<string name="quiz_reminder_body">Come back for today&#39;s quiz!</string>
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<string name="other_apps_title">More apps by the developer</string>
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</resources>

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