Project start

DoNExt/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.wismna.geoffroy.donext">
+
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:supportsRtl="true"
+        android:theme="@style/AppTheme">
+        <activity
+            android:name=".MainActivity"
+            android:label="@string/app_name"
+            android:theme="@style/AppTheme.NoActionBar">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>

DoNExt/app/src/main/java/com/wismna/geoffroy/donext/MainActivity.java

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+package com.wismna.geoffroy.donext;
+
+import android.support.design.widget.TabLayout;
+import android.support.design.widget.FloatingActionButton;
+import android.support.design.widget.Snackbar;
+import android.support.v7.app.AppCompatActivity;
+import android.support.v7.widget.Toolbar;
+
+import android.support.v4.app.Fragment;
+import android.support.v4.app.FragmentManager;
+import android.support.v4.app.FragmentPagerAdapter;
+import android.support.v4.view.ViewPager;
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.Menu;
+import android.view.MenuItem;
+import android.view.View;
+import android.view.ViewGroup;
+
+import android.widget.TextView;
+
+public class MainActivity extends AppCompatActivity {
+
+    /**
+     * The {@link android.support.v4.view.PagerAdapter} that will provide
+     * fragments for each of the sections. We use a
+     * {@link FragmentPagerAdapter} derivative, which will keep every
+     * loaded fragment in memory. If this becomes too memory intensive, it
+     * may be best to switch to a
+     * {@link android.support.v4.app.FragmentStatePagerAdapter}.
+     */
+    private SectionsPagerAdapter mSectionsPagerAdapter;
+
+    /**
+     * The {@link ViewPager} that will host the section contents.
+     */
+    private ViewPager mViewPager;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+
+        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
+        setSupportActionBar(toolbar);
+        // Create the adapter that will return a fragment for each of the three
+        // primary sections of the activity.
+        mSectionsPagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager());
+
+        // Set up the ViewPager with the sections adapter.
+        mViewPager = (ViewPager) findViewById(R.id.container);
+        mViewPager.setAdapter(mSectionsPagerAdapter);
+
+        TabLayout tabLayout = (TabLayout) findViewById(R.id.tabs);
+        tabLayout.setupWithViewPager(mViewPager);
+
+        FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
+        fab.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
+                        .setAction("Action", null).show();
+            }
+        });
+
+    }
+
+
+    @Override
+    public boolean onCreateOptionsMenu(Menu menu) {
+        // Inflate the menu; this adds items to the action bar if it is present.
+        getMenuInflater().inflate(R.menu.menu_main, menu);
+        return true;
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+        // Handle action bar item clicks here. The action bar will
+        // automatically handle clicks on the Home/Up button, so long
+        // as you specify a parent activity in AndroidManifest.xml.
+        int id = item.getItemId();
+
+        //noinspection SimplifiableIfStatement
+        if (id == R.id.action_settings) {
+            return true;
+        }
+
+        return super.onOptionsItemSelected(item);
+    }
+
+    /**
+     * A placeholder fragment containing a simple view.
+     */
+    public static class PlaceholderFragment extends Fragment {
+        /**
+         * The fragment argument representing the section number for this
+         * fragment.
+         */
+        private static final String ARG_SECTION_NUMBER = "section_number";
+
+        public PlaceholderFragment() {
+        }
+
+        /**
+         * Returns a new instance of this fragment for the given section
+         * number.
+         */
+        public static PlaceholderFragment newInstance(int sectionNumber) {
+            PlaceholderFragment fragment = new PlaceholderFragment();
+            Bundle args = new Bundle();
+            args.putInt(ARG_SECTION_NUMBER, sectionNumber);
+            fragment.setArguments(args);
+            return fragment;
+        }
+
+        @Override
+        public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                                 Bundle savedInstanceState) {
+            View rootView = inflater.inflate(R.layout.fragment_main, container, false);
+            TextView textView = (TextView) rootView.findViewById(R.id.section_label);
+            textView.setText(getString(R.string.section_format, getArguments().getInt(ARG_SECTION_NUMBER)));
+            return rootView;
+        }
+    }
+
+    /**
+     * A {@link FragmentPagerAdapter} that returns a fragment corresponding to
+     * one of the sections/tabs/pages.
+     */
+    public class SectionsPagerAdapter extends FragmentPagerAdapter {
+
+        public SectionsPagerAdapter(FragmentManager fm) {
+            super(fm);
+        }
+
+        @Override
+        public Fragment getItem(int position) {
+            // getItem is called to instantiate the fragment for the given page.
+            // Return a PlaceholderFragment (defined as a static inner class below).
+            return PlaceholderFragment.newInstance(position + 1);
+        }
+
+        @Override
+        public int getCount() {
+            // Show 3 total pages.
+            return 3;
+        }
+
+        @Override
+        public CharSequence getPageTitle(int position) {
+            switch (position) {
+                case 0:
+                    return "SECTION 1";
+                case 1:
+                    return "SECTION 2";
+                case 2:
+                    return "SECTION 3";
+            }
+            return null;
+        }
+    }
+}

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

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+<?xml version="1.0" encoding="utf-8"?>
+<android.support.design.widget.CoordinatorLayout 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:id="@+id/main_content"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:fitsSystemWindows="true"
+    tools:context="com.wismna.geoffroy.donext.MainActivity">
+
+    <android.support.design.widget.AppBarLayout
+        android:id="@+id/appbar"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:paddingTop="@dimen/appbar_padding_top"
+        android:theme="@style/AppTheme.AppBarOverlay">
+
+        <android.support.v7.widget.Toolbar
+            android:id="@+id/toolbar"
+            android:layout_width="match_parent"
+            android:layout_height="?attr/actionBarSize"
+            android:background="?attr/colorPrimary"
+            app:layout_scrollFlags="scroll|enterAlways"
+            app:popupTheme="@style/AppTheme.PopupOverlay">
+
+        </android.support.v7.widget.Toolbar>
+
+        <android.support.design.widget.TabLayout
+            android:id="@+id/tabs"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content" />
+
+    </android.support.design.widget.AppBarLayout>
+
+    <android.support.v4.view.ViewPager
+        android:id="@+id/container"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        app:layout_behavior="@string/appbar_scrolling_view_behavior" />
+
+    <android.support.design.widget.FloatingActionButton
+        android:id="@+id/fab"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_gravity="end|bottom"
+        android:layout_margin="@dimen/fab_margin"
+        android:src="@android:drawable/ic_dialog_email" />
+
+</android.support.design.widget.CoordinatorLayout>

DoNExt/app/src/main/res/layout/fragment_main.xml

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+<RelativeLayout 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"
+    android:paddingBottom="@dimen/activity_vertical_margin"
+    android:paddingLeft="@dimen/activity_horizontal_margin"
+    android:paddingRight="@dimen/activity_horizontal_margin"
+    android:paddingTop="@dimen/activity_vertical_margin"
+    tools:context="com.wismna.geoffroy.donext.MainActivity$PlaceholderFragment">
+
+    <TextView
+        android:id="@+id/section_label"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content" />
+
+</RelativeLayout>

DoNExt/app/src/main/res/menu/menu_main.xml

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+<menu 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"
+    tools:context="com.wismna.geoffroy.donext.MainActivity">
+    <item
+        android:id="@+id/action_settings"
+        android:orderInCategory="100"
+        android:title="@string/action_settings"
+        app:showAsAction="never" />
+</menu>

DoNExt/app/src/main/res/values-v21/styles.xml

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+<resources>>
+
+    <style name="AppTheme.NoActionBar">
+        <item name="windowActionBar">false</item>
+        <item name="windowNoTitle">true</item>
+        <item name="android:windowDrawsSystemBarBackgrounds">true</item>
+        <item name="android:statusBarColor">@android:color/transparent</item>
+    </style>
+</resources>

DoNExt/app/src/main/res/values-w820dp/dimens.xml

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+<resources>
+    <!-- Example customization of dimensions originally defined in res/values/dimens.xml
+         (such as screen margins) for screens with more than 820dp of available width. This
+         would include 7" and 10" devices in landscape (~960dp and ~1280dp respectively). -->
+    <dimen name="activity_horizontal_margin">64dp</dimen>
+</resources>

DoNExt/app/src/main/res/values/colors.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="colorPrimary">#3F51B5</color>
+    <color name="colorPrimaryDark">#303F9F</color>
+    <color name="colorAccent">#FF4081</color>
+</resources>

DoNExt/app/src/main/res/values/dimens.xml

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+<resources>
+    <!-- Default screen margins, per the Android Design guidelines. -->
+    <dimen name="activity_horizontal_margin">16dp</dimen>
+    <dimen name="activity_vertical_margin">16dp</dimen>
+    <dimen name="fab_margin">16dp</dimen>
+    <dimen name="appbar_padding_top">8dp</dimen>
+</resources>

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

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+<resources>
+    <string name="app_name">DoNExt</string>
+    <string name="action_settings">Settings</string>
+    <string name="section_format">Hello World from section: %1$d</string>
+</resources>

DoNExt/app/src/main/res/values/styles.xml

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+<resources>
+
+    <!-- Base application theme. -->
+    <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
+        <!-- Customize your theme here. -->
+        <item name="colorPrimary">@color/colorPrimary</item>
+        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
+        <item name="colorAccent">@color/colorAccent</item>
+    </style>
+
+    <style name="AppTheme.NoActionBar">
+        <item name="windowActionBar">false</item>
+        <item name="windowNoTitle">true</item>
+    </style>
+
+    <style name="AppTheme.AppBarOverlay" parent="ThemeOverlay.AppCompat.Dark.ActionBar" />
+
+    <style name="AppTheme.PopupOverlay" parent="ThemeOverlay.AppCompat.Light" />
+
+</resources>