Add CalendarFragment

app/build.gradle

@@ -27,5 +27,6 @@ dependencies {
     compile 'com.android.support:appcompat-v7:25.3.1'
     testCompile 'junit:junit:4.12'
     compile 'com.android.support:design:25.3.1'
-    compile 'com.android.support.constraint:constraint-layout:1.0.0-beta4'
+    compile 'com.android.support.constraint:constraint-layout:1.0.2'
+    compile 'com.android.support:support-v4:25.3.1'
 }

app/src/main/java/in/ac/iitb/gymkhana/iitbapp/MainActivity.java

@@ -2,9 +2,11 @@ package in.ac.iitb.gymkhana.iitbapp;
 
 import android.os.Bundle;
 import android.support.design.widget.FloatingActionButton;
-import android.support.design.widget.Snackbar;
-import android.view.View;
 import android.support.design.widget.NavigationView;
+import android.support.design.widget.Snackbar;
+import android.support.v4.app.Fragment;
+import android.support.v4.app.FragmentManager;
+import android.support.v4.app.FragmentTransaction;
 import android.support.v4.view.GravityCompat;
 import android.support.v4.widget.DrawerLayout;
 import android.support.v7.app.ActionBarDrawerToggle;
@@ -12,6 +14,9 @@ import android.support.v7.app.AppCompatActivity;
 import android.support.v7.widget.Toolbar;
 import android.view.Menu;
 import android.view.MenuItem;
+import android.view.View;
+
+import in.ac.iitb.gymkhana.iitbapp.fragments.CalendarFragment;
 
 public class MainActivity extends AppCompatActivity
         implements NavigationView.OnNavigationItemSelectedListener {
@@ -91,12 +96,13 @@ public class MainActivity extends AppCompatActivity
         } else if (id == R.id.nav_gc_rankings) {
 
         } else if (id == R.id.nav_calendar) {
+            CalendarFragment calendarFragment = new CalendarFragment();
+            updateFragment(calendarFragment);
+        } else if (id == R.id.nav_cms) {
 
-        }else if (id == R.id.nav_cms) {
-
-        }else if (id == R.id.nav_timetable) {
+        } else if (id == R.id.nav_timetable) {
 
-        }else if (id == R.id.nav_map) {
+        } else if (id == R.id.nav_map) {
 
         }
 
@@ -104,4 +110,11 @@ public class MainActivity extends AppCompatActivity
         drawer.closeDrawer(GravityCompat.START);
         return true;
     }
+
+    private void updateFragment(Fragment fragment) {
+        FragmentManager manager = getSupportFragmentManager();
+        FragmentTransaction transaction = manager.beginTransaction();
+        transaction.replace(R.id.constraintlayout_for_fragment, fragment, fragment.getTag());
+        transaction.commit();
+    }
 }

app/src/main/java/in/ac/iitb/gymkhana/iitbapp/fragments/CalendarFragment.java

+package in.ac.iitb.gymkhana.iitbapp.fragments;
+
+
+import android.os.Bundle;
+import android.support.v4.app.Fragment;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import in.ac.iitb.gymkhana.iitbapp.R;
+
+/**
+ * A simple {@link Fragment} subclass.
+ */
+public class CalendarFragment extends Fragment {
+
+
+    public CalendarFragment() {
+        // Required empty public constructor
+    }
+
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                             Bundle savedInstanceState) {
+        // Inflate the layout for this fragment
+        return inflater.inflate(R.layout.fragment_calendar, container, false);
+    }
+
+}

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

 <?xml version="1.0" encoding="utf-8"?>
-<android.support.constraint.ConstraintLayout
-    xmlns:android="http://schemas.android.com/apk/res/android"
+<android.support.constraint.ConstraintLayout 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"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
     android:layout_height="match_parent"
-    app:layout_behavior="@string/appbar_scrolling_view_behavior" tools:context="in.ac.iitb.gymkhana.iitbapp.MainActivity"
-    tools:showIn="@layout/app_bar_main">
-
-    <TextView android:layout_width="wrap_content" android:layout_height="wrap_content"
-        android:text="Hello World!" app:layout_constraintBottom_toBottomOf="parent"
-        app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintRight_toRightOf="parent"
-        app:layout_constraintTop_toTopOf="parent" />
-
-</android.support.constraint.ConstraintLayout>
+    android:id="@+id/constraintlayout_for_fragment"
+    app:layout_behavior="@string/appbar_scrolling_view_behavior"
+    tools:context="in.ac.iitb.gymkhana.iitbapp.MainActivity"
+    tools:showIn="@layout/app_bar_main" />

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

+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context="in.ac.iitb.gymkhana.iitbapp.fragments.CalendarFragment">
+
+    <!-- TODO: Update blank fragment layout -->
+    <TextView
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:text="@string/hello_blank_fragment" />
+
+</FrameLayout>

app/src/main/res/values/strings.xml

@@ -5,4 +5,7 @@
     <string name="navigation_drawer_close">Close navigation drawer</string>
 
     <string name="action_settings">Settings</string>
+
+    <!-- TODO: Remove or change this placeholder text -->
+    <string name="hello_blank_fragment">Hello blank fragment</string>
 </resources>