first commit

.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

app/.gitignore

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+/build

app/build.gradle

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+apply plugin: 'com.android.application'
+
+apply plugin: 'kotlin-android'
+
+apply plugin: 'kotlin-android-extensions'
+
+android {
+    compileSdkVersion 29
+    buildToolsVersion "29.0.2"
+    defaultConfig {
+        applicationId "com.example.searchrecyclerviewexample"
+        minSdkVersion 15
+        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'
+        }
+    }
+}
+
+dependencies {
+    implementation fileTree(dir: 'libs', include: ['*.jar'])
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
+    implementation 'androidx.appcompat:appcompat:1.1.0'
+    implementation 'androidx.core:core-ktx:1.1.0'
+    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
+    implementation 'androidx.recyclerview:recyclerview:1.1.0'
+    testImplementation 'junit:junit:4.13'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.1'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
+}

app/proguard-rules.pro

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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

app/src/androidTest/java/com/example/searchrecyclerviewexample/ExampleInstrumentedTest.kt

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+package com.example.searchrecyclerviewexample
+
+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.example.searchrecyclerviewexample", appContext.packageName)
+    }
+}

app/src/main/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.example.searchrecyclerviewexample">
+
+    <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=".DetailsActivity"></activity>
+        <activity android:name=".MainActivity">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>

app/src/main/java/com/example/searchrecyclerviewexample/DetailsActivity.kt

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+package com.example.searchrecyclerviewexample
+
+import android.os.Bundle
+import androidx.appcompat.app.AppCompatActivity
+import kotlinx.android.synthetic.main.activity_details.*
+
+class DetailsActivity : AppCompatActivity() {
+
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_details)
+
+        detail_country_text.text = intent.extras!!.getString("passselectedcountry")!!
+
+    }
+}

app/src/main/java/com/example/searchrecyclerviewexample/MainActivity.kt

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+package com.example.searchrecyclerviewexample
+
+import android.graphics.Color
+import android.os.Bundle
+import android.widget.ImageView
+import android.widget.TextView
+import androidx.appcompat.app.AppCompatActivity
+import androidx.appcompat.widget.SearchView
+import androidx.recyclerview.widget.LinearLayoutManager
+import androidx.recyclerview.widget.RecyclerView
+import kotlinx.android.synthetic.main.activity_main.*
+import java.util.*
+import kotlin.collections.ArrayList
+
+
+class MainActivity : AppCompatActivity() {
+
+    lateinit var adapter: RecyclerView_Adapter
+    lateinit var countryrv: RecyclerView
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_main)
+
+        val searchIcon = country_search.findViewById<ImageView>(R.id.search_mag_icon)
+        searchIcon.setColorFilter(Color.WHITE)
+
+
+        val cancelIcon = country_search.findViewById<ImageView>(R.id.search_close_btn)
+        cancelIcon.setColorFilter(Color.WHITE)
+
+
+        val textView = country_search.findViewById<TextView>(R.id.search_src_text)
+        textView.setTextColor(Color.WHITE)
+        // If you want to change the color of the cursor, change the 'colorAccent' in colors.xml
+
+
+        countryrv = findViewById(R.id.country_rv)
+        countryrv.layoutManager = LinearLayoutManager(countryrv.context)
+        countryrv.setHasFixedSize(true)
+
+        country_search.setOnQueryTextListener(object : SearchView.OnQueryTextListener {
+            override fun onQueryTextSubmit(query: String?): Boolean {
+                return false
+            }
+
+            override fun onQueryTextChange(newText: String?): Boolean {
+                adapter.filter.filter(newText)
+                return false
+            }
+
+        })
+
+        getListOfCountries()
+    }
+
+    private fun getListOfCountries() {
+        val isoCountryCodes = Locale.getISOCountries()
+        val countryListWithEmojis = ArrayList<String>()
+        for (countryCode in isoCountryCodes) {
+            val locale = Locale("", countryCode)
+            val countryName = locale.displayCountry
+            val flagOffset = 0x1F1E6
+            val asciiOffset = 0x41
+            val firstChar = Character.codePointAt(countryCode, 0) - asciiOffset + flagOffset
+            val secondChar = Character.codePointAt(countryCode, 1) - asciiOffset + flagOffset
+            val flag =
+                (String(Character.toChars(firstChar)) + String(Character.toChars(secondChar)))
+            countryListWithEmojis.add("$countryName $flag")
+        }
+        adapter = RecyclerView_Adapter(countryListWithEmojis)
+        countryrv.adapter = adapter
+    }
+
+
+}