Initial commit

Author: Srt9930

.gitignore

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+*.iml
+.gradle
+/local.properties
+/.idea/caches
+/.idea/libraries
+/.idea/modules.xml
+/.idea/workspace.xml
+/.idea/navEditor.xml
+/.idea/assetWizardSettings.xml
+.DS_Store
+/build
+/captures
+.externalNativeBuild
+.cxx
+local.properties

.idea/.gitignore

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+/build

.idea/compiler.xml

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+plugins {
+    id 'com.android.application'
+    id 'kotlin-android'
+}
+
+android {
+    compileSdkVersion 29
+    buildToolsVersion "29.0.3"
+
+    defaultConfig {
+        applicationId "com.srt.backstackproblem"
+        minSdkVersion 21
+        targetSdkVersion 29
+        versionCode 1
+        versionName "1.0"
+
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+    kotlinOptions {
+        jvmTarget = '1.8'
+    }
+}
+
+dependencies {
+
+    implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
+    implementation 'androidx.core:core-ktx:1.3.2'
+    implementation 'androidx.appcompat:appcompat:1.2.0'
+    implementation 'com.google.android.material:material:1.3.0'
+    implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
+    implementation 'androidx.legacy:legacy-support-v4:1.0.0'
+    testImplementation 'junit:junit:4.13.2'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.2'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
+    implementation "androidx.navigation:navigation-fragment-ktx:2.3.4"
+    implementation 'androidx.appcompat:appcompat:1.2.0'
+    implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
+    implementation 'androidx.legacy:legacy-support-v4:1.0.0'
+    implementation 'com.google.android.material:material:1.4.0-alpha02'
+    implementation 'androidx.lifecycle:lifecycle-extensions:2.2.0'
+    testImplementation 'junit:junit:4.13.2'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.2'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
+    implementation 'androidx.fragment:fragment-ktx:1.3.2'
+    implementation "androidx.core:core-ktx:1.3.2"
+    implementation 'com.android.support:multidex:1.0.3'
+    implementation 'androidx.multidex:multidex:2.0.1'
+    implementation 'org.jetbrains.kotlin:kotlin-stdlib-jdk7:1.4.31'
+    implementation 'androidx.navigation:navigation-fragment-ktx:2.3.4'
+    implementation 'androidx.navigation:navigation-ui-ktx:2.3.4'
+    implementation 'com.squareup.retrofit2:retrofit:2.9.0'
+    implementation 'com.squareup.retrofit2:converter-gson:2.9.0'
+    implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-android:1.4.1'
+}
+
+apply plugin: 'kotlin-android-extensions'

.idea/gradle.xml

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+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile

.idea/jarRepositories.xml

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+package com.srt.backstackproblem
+
+import androidx.test.platform.app.InstrumentationRegistry
+import androidx.test.ext.junit.runners.AndroidJUnit4
+
+import org.junit.Test
+import org.junit.runner.RunWith
+
+import org.junit.Assert.*
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * See [testing documentation](http://d.android.com/tools/testing).
+ */
+@RunWith(AndroidJUnit4::class)
+class ExampleInstrumentedTest {
+    @Test
+    fun useAppContext() {
+        // Context of the app under test.
+        val appContext = InstrumentationRegistry.getInstrumentation().targetContext
+        assertEquals("com.srt.backstackproblem", appContext.packageName)
+    }
+}

.idea/misc.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.srt.backstackproblem">
+
+    <uses-permission android:name="android.permission.INTERNET" />
+
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/AppTheme">
+        <activity android:name=".MainActivity"
+            android:theme="@style/AppTheme">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+
+    </application>
+
+</manifest>

.idea/vcs.xml

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+package com.srt.backstackproblem
+
+import android.os.Bundle
+import androidx.fragment.app.Fragment
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.TextView
+import androidx.recyclerview.widget.LinearLayoutManager
+import androidx.recyclerview.widget.RecyclerView
+import androidx.viewpager2.widget.ViewPager2
+import kotlinx.android.synthetic.main.fragment_home.view.*
+
+class HomeFragment : Fragment() {
+
+    override fun onCreateView(
+        inflater: LayoutInflater, container: ViewGroup?,
+        savedInstanceState: Bundle?): View? {
+        // Inflate the layout for this fragment
+        val view =  inflater.inflate(R.layout.fragment_home, container, false)
+
+        view?.go_to_chat_btn?.setOnClickListener {
+            val viewPagerActivity = activity?.findViewById<ViewPager2>(R.id.view_pager_main_activity)
+            viewPagerActivity?.currentItem = 1
+        }
+
+        view?.go_to_profile_btn?.setOnClickListener {
+            val containerId = (view.parent as ViewGroup).id
+            activity?.supportFragmentManager?.beginTransaction()?.add(containerId, ProfileFragment())?.addToBackStack(null)?.commit()
+        }
+
+
+        //Fake work
+
+        val recyclerView = view?.findViewById(R.id.listRecyclerView) as RecyclerView
+        val linearLayoutManager = LinearLayoutManager(requireContext())
+        recyclerView.layoutManager = linearLayoutManager
+        val data = ArrayList<Data>()
+
+
+            for(num in 1..50) {
+                data.add(Data(num))
+            }
+
+
+        val adapter = CustomAdapter(data)
+        recyclerView.adapter = adapter
+
+        return view
+    }
+
+}
+
+//Fake work
+
+class CustomAdapter(private val dataList: ArrayList<Data>) : RecyclerView.Adapter<CustomAdapter.ViewHolder>() {
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
+        val v = LayoutInflater.from(parent.context).inflate(R.layout.an_item, parent, false)
+        return ViewHolder(v)
+    }
+
+    override fun onBindViewHolder(holder: ViewHolder, position: Int) {
+        holder.bindItems(dataList[position])
+    }
+    override fun getItemCount(): Int {
+        return dataList.size
+    }
+
+    class ViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
+
+        fun bindItems(data: Data) {
+            val textView = itemView.findViewById(R.id.theTextView) as TextView
+            textView.text = data.number.toString()
+        }
+    }
+}
+
+data class Data(val number: Int)

app/.gitignore

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+package com.srt.backstackproblem
+
+import android.os.Bundle
+import androidx.fragment.app.Fragment
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+
+class HomeFragmentContainer : Fragment() {
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        if(savedInstanceState == null) { // initial transaction should be wrapped like this
+            childFragmentManager.beginTransaction()
+                    .replace(R.id.fragment_container_home_id, HomeFragment())
+                    .commitAllowingStateLoss()
+        }
+    }
+
+    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?,
+                              savedInstanceState: Bundle?): View? {
+        // Inflate the layout for this fragment
+        val view =  inflater.inflate(R.layout.fragment_home_container, container, false)
+
+        return view
+    }
+
+}