Navigation drawer added in SecondActivity

app/build.gradle

@@ -2,7 +2,7 @@ apply plugin: 'com.android.application'
 
 android {
     compileSdkVersion 23
-    buildToolsVersion "23.0.2"
+    buildToolsVersion '26.0.2'
 
     defaultConfig {
         applicationId "com.exun.test.navexpandablelist"
@@ -21,6 +21,7 @@ android {
 
 dependencies {
     compile fileTree(dir: 'libs', include: ['*.jar'])
+    compile 'com.android.support.constraint:constraint-layout:1.1.2'
     testCompile 'junit:junit:4.12'
     compile 'com.android.support:appcompat-v7:23.1.1'
     compile 'com.android.support:design:23.1.1'

app/src/main/AndroidManifest.xml

@@ -18,6 +18,7 @@
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
+        <activity android:name=".SecondActivity"></activity>
     </application>
 
-</manifest>
+</manifest>

app/src/main/java/com/exun/test/navexpandablelist/MainActivity.java

@@ -1,12 +1,14 @@
 package com.exun.test.navexpandablelist;
 
+import android.content.Intent;
 import android.content.res.Resources;
 import android.os.Bundle;
 import android.support.v4.widget.DrawerLayout;
 import android.support.v7.app.ActionBarDrawerToggle;
 import android.support.v7.app.AppCompatActivity;
 import android.support.v7.widget.Toolbar;
 import android.view.View;
+import android.widget.Button;
 import android.widget.ExpandableListView;
 import android.widget.Toast;
 
@@ -24,18 +26,31 @@ public class MainActivity extends AppCompatActivity implements ExpandableListVie
     List<String> listDataHeader;
     HashMap<String, List<String>> listDataChild;
 
+    //Second activity button declaration
+    Button secondActivityBtn;
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
 
         setContentView(R.layout.activity_main);
 
+        //assigning id to secondActivityBtn
+        secondActivityBtn=(Button)findViewById(R.id.secondActivityBtn);
 
         toolbar = (Toolbar) findViewById(R.id.toolbar);
         setSupportActionBar(toolbar);
         getSupportActionBar().setDisplayShowHomeEnabled(true);
 
         initDrawer();
+
+        // setting onclickListener for secondActivityBtn
+        secondActivityBtn.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                Intent i= new Intent(MainActivity.this,SecondActivity.class);
+                startActivity(i);
+            }
+        });
     }
 
     private void initDrawer() {

app/src/main/java/com/exun/test/navexpandablelist/SecondActivity.java

@@ -0,0 +1,136 @@
+package com.exun.test.navexpandablelist;
+
+import android.content.res.Resources;
+import android.support.v4.widget.DrawerLayout;
+import android.support.v7.app.ActionBarDrawerToggle;
+import android.support.v7.app.AppCompatActivity;
+import android.os.Bundle;
+import android.support.v7.widget.Toolbar;
+import android.view.View;
+import android.widget.ExpandableListView;
+import android.widget.Toast;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.List;
+
+public class SecondActivity extends AppCompatActivity implements ExpandableListView.OnChildClickListener{
+
+    Toolbar toolbar;
+    private DrawerLayout drawer;
+    private ExpandableListView drawerList;
+    private ActionBarDrawerToggle actionBarDrawerToggle;
+    List<String> listDataHeader;
+    HashMap<String, List<String>> listDataChild;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_second);
+
+
+        toolbar = (Toolbar) findViewById(R.id.toolbar);
+        setSupportActionBar(toolbar);
+        getSupportActionBar().setDisplayShowHomeEnabled(true);
+
+        initDrawer();
+
+    }
+    private void initDrawer() {
+        drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
+
+        drawerList = (ExpandableListView) findViewById(R.id.left_drawer);
+
+        // preparing list data
+        prepareListData();
+
+        drawerList.setAdapter(new NavAdapter(this, listDataHeader, listDataChild));
+
+        drawerList.setOnChildClickListener(this);
+
+        actionBarDrawerToggle = new ActionBarDrawerToggle(this,drawer,toolbar,R.string.drawer_open , R.string.drawer_close ){
+
+            @Override
+            public void onDrawerClosed(View drawerView) {
+                // Code here will be triggered once the drawer closes as we don't want anything to happen so we leave this blank
+                super.onDrawerClosed(drawerView);
+            }
+
+            @Override
+            public void onDrawerOpened(View drawerView) {
+                // Code here will be triggered once the drawer open as we don't want anything to happen so we leave this blank
+
+                super.onDrawerOpened(drawerView);
+            }
+        };
+
+        //Setting the actionbarToggle to drawer layout
+        drawer.setDrawerListener(actionBarDrawerToggle);
+
+        //calling sync state is necessay or else your hamburger icon wont show up
+        actionBarDrawerToggle.syncState();
+    }
+
+    /*
+     * Preparing the list data
+     */
+    private void prepareListData() {
+        listDataHeader = new ArrayList<String>();
+        listDataChild = new HashMap<String, List<String>>();
+
+
+        // Adding headers
+        Resources res = getResources();
+        String[] headers = res.getStringArray(R.array.nav_drawer_labels);
+        listDataHeader = Arrays.asList(headers);
+
+        //Adding child data
+
+//        //Dynamic method
+//        for (int i =0; i<listDataHeader.size(); i++){
+//
+//            //Save data in array
+//            String[] childData = res.getStringArray(R.array.elements_home);
+//
+//            //Put data in List
+//            List<String> listChild;
+//            listChild = Arrays.asList(childData);
+//
+//            //Add to hashMap
+//            listDataChild.put(listDataHeader.get(i),listChild);
+//        }
+
+        // Static method
+        List<String> home,friends,notifs;
+        String[] shome,sfriends,snotifs;
+
+        shome = res.getStringArray(R.array.elements_home);
+        home = Arrays.asList(shome);
+
+        sfriends = res.getStringArray(R.array.elements_friends);
+        friends = Arrays.asList(sfriends);
+
+        snotifs = res.getStringArray(R.array.elements_notifs);
+        notifs = Arrays.asList(snotifs);
+
+        // Add to hashMap
+        listDataChild.put(listDataHeader.get(0), home); // Header, Child data
+        listDataChild.put(listDataHeader.get(1), friends);
+        listDataChild.put(listDataHeader.get(2), notifs);
+    }
+
+    @Override
+    public boolean onChildClick(ExpandableListView parent, View v,
+                                int groupPosition, int childPosition, long id) {
+        Toast.makeText(
+                getApplicationContext(),
+                listDataHeader.get(groupPosition)
+                        + " : "
+                        + listDataChild.get(
+                        listDataHeader.get(groupPosition)).get(
+                        childPosition), Toast.LENGTH_SHORT)
+                .show();
+        return false;
+    }
+}

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

@@ -28,9 +28,23 @@
             android:layout_height="0dp"
             android:layout_weight="1" />
 
+        <Button
+            android:id="@+id/secondActivityBtn"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="Open Second Activity"
+            android:padding="2dp"
+            android:layout_marginLeft="100dp"
+            android:layout_marginBottom="250dp"
+            android:textColor="@android:color/white"
+            android:background="@android:color/holo_green_light"
+            />
+
 
     </LinearLayout>
 
+
+
     <ExpandableListView
         android:id="@+id/left_drawer"
         android:layout_width="240dp"

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

@@ -0,0 +1,49 @@
+<?xml version="1.0" encoding="utf-8"?>
+<android.support.v4.widget.DrawerLayout 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:id="@+id/drawer_layout">
+
+    <!--tools:context="com.exun.test.navexpandablelist.SecondActivity"-->
+
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:orientation="vertical">
+
+        <LinearLayout
+            android:id="@+id/container_toolbar"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:orientation="vertical">
+
+            <include
+                android:id="@+id/toolbar"
+                layout="@layout/toolbar" />
+        </LinearLayout>
+
+        <FrameLayout
+            android:id="@+id/container_body"
+            android:layout_width="fill_parent"
+            android:layout_height="0dp"
+            android:layout_weight="1" />
+
+
+    </LinearLayout>
+
+
+
+    <ExpandableListView
+        android:id="@+id/left_drawer"
+        android:layout_width="240dp"
+        android:layout_height="match_parent"
+        android:layout_gravity="start"
+        android:dividerHeight="1dp"
+        android:divider="@color/list_divider"
+        android:listSelector="@drawable/list_selector"
+        android:background="@color/list_background" />
+
+</android.support.v4.widget.DrawerLayout>

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

@@ -13,6 +13,7 @@
         android:paddingTop="5dp"
         android:text="Hello"
         android:paddingBottom="5dp"
-        android:paddingLeft="?android:attr/expandableListPreferredChildPaddingLeft" />
+        android:paddingLeft="?android:attr/expandableListPreferredChildPaddingLeft"
+        />
 
 </LinearLayout>

build.gradle

@@ -3,9 +3,13 @@
 buildscript {
     repositories {
         jcenter()
+        maven {
+            url 'https://maven.google.com/'
+            name 'Google'
+        }
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:1.5.0'
+        classpath 'com.android.tools.build:gradle:3.0.1'
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
@@ -15,6 +19,7 @@ buildscript {
 allprojects {
     repositories {
         jcenter()
+        google()
     }
 }
 

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
-#Wed Oct 21 11:34:03 PDT 2015
+#Thu Jun 21 00:31:35 IST 2018
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-2.8-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.1-all.zip