Integration of Huawei Remote Configuration in Quiz Android app (Kotlin) – Part 3 - Huawei Developers

{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
Introduction
In this article, we can learn how to fetch the quiz questions and answers to sports from the server using Huawei Remote Configuration. Suppose you want to add any extra questions or delete any questions on the application, this Remote configuration helps to change the content without changing the code. Users can just change the content in the JSON format so that it will display the same in the app. So, I will provide a series of articles on this Quiz App, in upcoming articles.
If you are new to this application, follow my previous articles.
https://forums.developer.huawei.com/forumPortal/en/topic/0202877278014350004
https://forums.developer.huawei.com/forumPortal/en/topic/0201884103719030016?fid=0101187876626530001
What is Huawei Remote Configuration?
Huawei Remote Configuration is a cloud service. It changes the behavior and appearance of your app without publishing an app update on App Gallery for all active users. Basically, Remote Configuration allows you to maintain parameters on the cloud, based on these parameters we control the behavior and appearance of your app. In the festival scenario, we can define parameters with the text, color, and images for a theme which can be fetched using Remote Configuration.
Configuration in AGC
1. Sign in to AppGallery Connect and select My apps.
2. Select the app in which you want to integrate Huawei Remote configuration Service.
3. Navigate to Grow > Remote configuration and click Use now.
4. Click New parameter.
5. Enter the Parameter name, json format content in Default value, Description, and then click Save.
Note: Once you add or edit the JSON format content in Default value, it will take 12 hours to return in the app.
Requirements
1. Any operating system (MacOS, Linux, and Windows).
2. Must have a Huawei phone with HMS 4.0.0.300 or later.
3. Must have a laptop or desktop with Android Studio, Jdk 1.8, SDK platform 26 and Gradle 4.6 and above installed.
4. Minimum API Level 24 is required.
5. Required EMUI 9.0.0 and later version devices.
How to integrate HMS Dependencies
1. First register as Huawei developer and complete identity verification on the Huawei developers website, refer to register a Huawei ID.
2. Create a project in android studio, refer Creating an Android Studio Project.
3. Generate a SHA-256 certificate fingerprint.
4. To generate SHA-256 certificate fingerprint. On right-upper corner of android project click Gradle, choose Project Name > Tasks > android, and then click signingReport, as follows.
Note: Project Name depends on the user created name.
5. Create an App in AppGallery Connect.
6. Download the agconnect-services.json file from App information, copy and paste in android Project under app directory, as follows.
7. Enter SHA-256 certificate fingerprint and click Save button, as follows.
Note: Above steps from Step 1 to 7 is common for all Huawei Kits.
8. Click Manage APIs tab and enable Remote Configuration and HUAWEI Analytics.
9. Add the below maven URL in build.gradle(Project) file under the repositories of buildscript, dependencies and allprojects, refer Add Configuration.
Java:
maven { url 'http://developer.huawei.com/repo/' }
classpath 'com.huawei.agconnect:agcp:1.6.0.300'
10. Add the below plugin and dependencies in build.gradle(Module) file.
Java:
apply plugin: id 'com.huawei.agconnect'
// Huawei AGC
implementation 'com.huawei.agconnect:agconnect-core:1.6.0.300'
// Huawei Analytics Kit
implementation 'com.huawei.hms:hianalytics:6.4.0.300'
// Remote Config
implementation 'com.huawei.agconnect:agconnect-remoteconfig:1.6.5.300'
11. Now Sync the gradle.
12. Add the required permission to the AndroidManifest.xml file.
Java:
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
Let us move to development
I have created a project on Android studio with empty activity let us start coding.
In the SportsActivity.kt we can find the business logic for android questions.
Java:
class SportsActivity : AppCompatActivity(), View.OnClickListener {
private var pCurrentPosition: Int = 1
private var pQuestionsList: ArrayList<SportQuestions>? = null
private var pSelectedOptionPosition: Int = 0
private var pCorrectAnswers: Int = 0
private var layout: LinearLayout? = null
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_sports)
layout = findViewById(R.id.Layout_container)
layout!!.visibility = View.GONE
txt_option1_spt.setOnClickListener(this)
txt_option2_spt.setOnClickListener(this)
txt_option3_spt.setOnClickListener(this)
txt_option4_spt.setOnClickListener(this)
btn_spt_submit.setOnClickListener(this)
pQuestionsList = ArrayList<SportQuestions>()
// Remote Configuration Fetching
val config : AGConnectConfig= AGConnectConfig.getInstance()
config.fetch(0).addOnSuccessListener {
config.apply(it)
val value = config.getValueAsString("remoteconfig_ques")
parseQuestion(value)
setQuestion()
}.addOnFailureListener {
}
}
// Parse the questions in array format
private fun parseQuestion(value : String) {
val jsonObject : JSONObject = JSONObject(value)
val questions : JSONArray = jsonObject.getJSONArray("questions")
for (i in 0 until questions.length()) {
val q: JSONObject = questions.getJSONObject(i)
val question = q.getString("question")
val option1 = q.getString("option1")
val option2 = q.getString("option2")
val option3 = q.getString("option3")
val option4 = q.getString("option4")
val answer = q.getString("answer")
val id = q.getString("id")
val sportQuestions = SportQuestions(id.toInt(),question, option1,option2,option3,option4,answer.last().digitToInt() )
pQuestionsList?.add(sportQuestions)
layout!!.visibility = View.VISIBLE
}
}
private fun setQuestion() {
val question = pQuestionsList!![pCurrentPosition -1]
defaultOptionsView()
if(pCurrentPosition == pQuestionsList!!.size){
btn_spt_submit.text = "FINISH"
} else {
btn_spt_submit.text = "SUBMIT"
}
progressBar_spt.progress = pCurrentPosition
txt_progress_spt.text = "$pCurrentPosition" + "/" + progressBar_spt.max
txt_sptquestion.text = question!!.spt_questions
txt_option1_spt.text = question.spt_option1
txt_option2_spt.text = question.spt_option2
txt_option3_spt.text = question.spt_option3
txt_option4_spt.text = question.spt_option4
}
private fun defaultOptionsView() {
val options = ArrayList<TextView>()
options.add(0, txt_option1_spt)
options.add(1, txt_option2_spt)
options.add(2, txt_option3_spt)
options.add(3, txt_option4_spt)
for(option in options){
option.setTextColor(Color.parseColor("#7A8089"))
option.typeface = Typeface.DEFAULT
option.background = ContextCompat.getDrawable(this, R.drawable.border_bg)
}
}
override fun onClick(v: View?) {
when(v?.id){
R.id.txt_option1_spt -> {
selectedOptionView(txt_option1_spt, 1)
}
R.id.txt_option2_spt -> {
selectedOptionView(txt_option2_spt, 2)
}
R.id.txt_option3_spt -> {
selectedOptionView(txt_option3_spt, 3)
}
R.id.txt_option4_spt -> {
selectedOptionView(txt_option4_spt, 4)
}
R.id.btn_spt_submit -> {
if(pSelectedOptionPosition == 0){
pCurrentPosition++
when{
pCurrentPosition <= pQuestionsList!!.size -> {
setQuestion()
} else -> {
val intent = Intent(this, SportsResultActivity::class.java)
intent.putExtra(SportConstants.TOTAL_SPT_QUESTIONS, pCorrectAnswers)
intent.putExtra(SportConstants.CORRECT_SPT_ANSWERS, pQuestionsList!!.size)
startActivity(intent)
}
}
} else {
val question = pQuestionsList?.get(pCurrentPosition -1)
if(question!!.spt_correctAnswer != pSelectedOptionPosition){
answerView(pSelectedOptionPosition, R.drawable.wrong_bg)
} else {
pCorrectAnswers ++
}
answerView(question!!.spt_correctAnswer, R.drawable.correct_bg)
if(pCurrentPosition == pQuestionsList!!.size){
btn_spt_submit.text = "FINISH"
} else {
btn_spt_submit.text = "Next Question"
}
pSelectedOptionPosition = 0
}
}
}
}
private fun answerView(answer:Int, drawableView:Int){
when(answer) {
1 -> {
txt_option1_spt.background = ContextCompat.getDrawable(this, drawableView)
}
2 -> {
txt_option2_spt.background = ContextCompat.getDrawable(this, drawableView)
}
3 -> {
txt_option3_spt.background = ContextCompat.getDrawable(this, drawableView)
}
4 -> {
txt_option4_spt.background = ContextCompat.getDrawable(this, drawableView)
}
}
}
private fun selectedOptionView(tv: TextView, selectedOptionNum: Int){
defaultOptionsView()
pSelectedOptionPosition = selectedOptionNum
tv.setTextColor(Color.parseColor("#363A43"))
tv.setTypeface(tv.typeface, Typeface.BOLD)
tv.background = ContextCompat.getDrawable(this, R.drawable.select_bg)
}
}
In the SportsResultActivity.kt we can find the business logic for android result view.
Java:
class SportsResultActivity : AppCompatActivity() {
val TOTAL_SPT_QUESTIONS: String = "total_questions"
val CORRECT_SPT_ANSWERS: String = "correct_answers"
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_sports_result)
val totalQuestions = intent.getIntExtra(TOTAL_SPT_QUESTIONS, 0)
val correctAnswers = intent.getIntExtra(CORRECT_SPT_ANSWERS, 0)
txt_sptscore.text = "Your Score is $totalQuestions out of $correctAnswers"
btn_sptfinish.setOnClickListener {
startActivity(Intent(this, Home::class.java))
}
}
}
Create a data class SportQuestions.kt to access variables.
Java:
data class SportQuestions (
val id:Int,
val spt_questions:String,
val spt_option1:String,
val spt_option2:String,
val spt_option3:String,
val spt_option4:String,
val spt_correctAnswer:Int
)
In the activity_sports.xml we can create the UI screen for questions.
XML:
<?xml version="1.0" encoding="utf-8"?>
<ScrollView 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"
android:fillViewport="true"
tools:context=".sports.SportsActivity">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/Layout_container"
android:visibility="gone"
android:orientation="vertical"
android:padding="16dp"
android:gravity="center" >
<TextView
android:id="@+id/txt_sptquestion"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="10dp"
android:gravity="center"
android:text="Which is the national sport of Latvia?"
android:textColor="#363A43"
android:textSize="18sp">
</TextView>
<LinearLayout
android:id="@+id/progress_details_spt"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:gravity="center_vertical"
android:layout_marginTop="16dp" >
<ProgressBar
android:id="@+id/progressBar_spt"
style="?android:attr/progressBarStyleHorizontal"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:minHeight="50dp"
android:progress="0"
android:indeterminate="false"
android:max="10">
</ProgressBar>
<TextView
android:id="@+id/txt_progress_spt"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="15dp"
android:gravity="center"
android:textColorHint="#7A8089"
android:textSize="14sp"
tools:text="1/10">
</TextView>
</LinearLayout>
<TextView
android:id="@+id/txt_option1_spt"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="10dp"
android:background="@drawable/border_bg"
android:padding="15dp"
android:gravity="center"
android:textColor="#7A8089"
android:textSize="18sp"
tools:text="Ice Hockey">
</TextView>
<TextView
android:id="@+id/txt_option2_spt"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="10dp"
android:background="@drawable/border_bg"
android:padding="15dp"
android:gravity="center"
android:textColor="#7A8089"
android:textSize="18sp"
tools:text="Basketball">
</TextView>
<TextView
android:id="@+id/txt_option3_spt"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="10dp"
android:background="@drawable/border_bg"
android:padding="15dp"
android:gravity="center"
android:textColor="#7A8089"
android:textSize="18sp"
tools:text="Football">
</TextView>
<TextView
android:id="@+id/txt_option4_spt"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="10dp"
android:background="@drawable/border_bg"
android:padding="15dp"
android:gravity="center"
android:textColor="#7A8089"
android:textSize="18sp"
tools:text="Volleyball">
</TextView>
<Button
android:id="@+id/btn_spt_submit"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="10dp"
android:background="@color/design_default_color_primary"
android:text="Submit"
android:textAllCaps="false"
android:textColor="@color/white"
android:textSize="18sp"
android:textStyle="bold" />
</LinearLayout>
</ScrollView>
In the activity_sports_result.xml we can create the UI screen for result.
XML:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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"
android:orientation="vertical"
android:gravity="center"
android:background="@drawable/sportsresult_bg"
android:padding="20dp"
tools:context=".sports.SportsResultActivity">
<TextView
android:id="@+id/txt_sptresult"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="25dp"
android:text="Result"
android:textColor="@android:color/white"
android:textStyle="bold"
android:textSize="22sp">
</TextView>
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="16dp"
android:src="@drawable/women_spray"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="16dp"
android:text="Wow Completed Sports Quiz!!"
android:textColor="@android:color/white"
android:textStyle="bold"
android:textSize="21sp">
</TextView>
<TextView
android:id="@+id/txt_sptscore"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="15dp"
android:text="Your Score is 4 out of 10"
android:textColor="@color/design_default_color_error"
android:textSize="20sp">
</TextView>
<Button
android:id="@+id/btn_sptfinish"
android:layout_width="150dp"
android:layout_height="wrap_content"
android:layout_margin="15dp"
android:background="@android:color/white"
android:text="Finish"
android:textAllCaps="false"
android:textColor="@color/white"
android:textSize="18sp"
android:textStyle="bold" />
</LinearLayout>
Demo
Tips and Tricks
1. Make sure you are already registered as Huawei developer.
2. Set minSDK version to 24 or later, otherwise you will get AndriodManifest merge issue.
3. Make sure you have added the agconnect-services.json file to app folder.
4. Make sure you have added SHA-256 fingerprint without fail.
5. Make sure all the dependencies are added properly.
Conclusion
In this article, we have learned how to fetch the quiz questions and answers to sports from the server using Huawei Remote Configuration. Suppose you want to add any extra questions or delete any questions on the application, this Remote configuration helps to change the content without changing the code. Users can just change the content in the JSON format so that it will display the same in the app. So, I will provide a series of articles on this Quiz App, in upcoming articles.
I hope you have read this article. If you found it helpful, please provide likes and comments.
Reference
Remote Configuration - Document
Remote Configuration - Training Video