title: How to display other layouts?
body: <p>I am new at android development and just trying to learn along the way!</p>
  
  <p>I am creating an android app that I would like to show different views, one for weight, weather, and hydration (are what I have called them for now). Although when I run my app I only get my one view displayed. </p>
  
  <p>What code do I have to add/modify in order to display the other two layouts in the tabbed view? </p>
  
  <p>Here is my code in MainActivity.java </p>
  
  <pre><code>    package com.oxinc.android.drate;
  
  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.EditText;
  import android.widget.TextView;
  
  public class MainActivity extends AppCompatActivity {
  
      int quantity = 0;
      String outcome = "";
      int required = 0;
      int height = 0;
  
      /**
       * 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);
  
          //Tabbed Layout
          TabLayout tabLayout = (TabLayout) findViewById(R.id.tabs);
          tabLayout.setupWithViewPager(mViewPager);
  
          //Floating Action Button
          FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
          fab.setOnClickListener(new View.OnClickListener() {
              @Override
              public void onClick(View view) {
                  Snackbar.make(view, "Are you hydrated?", 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 static PlaceholderFragment fragment_main() {
              PlaceholderFragment fragment = new PlaceholderFragment();
              return fragment;
          }
  
          /**
           * Returns a new instance of this fragment for the given section
           * number.
           */
          public static PlaceholderFragment weight(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 hydration = inflater.inflate(R.layout.hydration, container, false);
              return hydration;
          }
      }
  
      /**
       * 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.weight(position + 1);
          }
  
          @Override
          public int getCount() {
              // Show 3 total pages.
              return 3;
          }
  
          @Override
          public CharSequence getPageTitle(int position) {
              switch (position) {
                  case 0:
                      return "Hydration";
                  case 1:
                      return "Weigh In";
                  case 2:
                      return "Weather";
              }
              return null;
          }
      }
  
          public void eight(View view) {
              quantity = quantity + 8;
              displayQuantity(quantity);
          }
  
          public void twelve(View view) {
              quantity = quantity + 12;
              displayQuantity(quantity);
          }
  
          public void sixteen(View view) {
              quantity = quantity + 16;
              displayQuantity(quantity);
          }
  
          public void thirty_two(View view) {
              quantity = quantity + 32;
              displayQuantity(quantity);
          }
  
          public void sixty_four(View view) {
              quantity = quantity + 64;
              displayQuantity(quantity);
          }
  
          //Reset Button
          public void reset(View view) {
              quantity = 0;
              displayQuantity(quantity);
              outcome = "";
              displayOutcome(outcome);
          }
  
          //Starts the basic formula for oz. per day
          public int height(int value) {
              EditText height = (EditText) findViewById(R.id.height);
              String height_value = height.getText().toString();
              int int_height = Integer.parseInt(height_value);
  
              if (int_height &gt;= 60) {
                  required = 64;
              }
              return required;
          }
          /**
           * This method is called when the check button is clicked.
           */
          public String check(View view) {
  
              height((int) height);
              if (quantity &gt;= required) {
                  outcome = "You have met your goal!!";
              } else {
                  outcome = "Keep trying you are almost there";
              }
              displayOutcome(outcome);
              return outcome;
          }
  
          //Displays the Outcome to the outcome text view
          public void displayOutcome(String n) {
              TextView outcomeTextView = (TextView) findViewById(
                      R.id.outcome_text_view);
              outcomeTextView.setText(outcome);
          }
  
          /**
           * This method displays the given quantity value on the screen.
           */
          public void displayQuantity(int quantity) {
              TextView quantityTextView = (TextView) findViewById(
                      R.id.quantity_text_view);
              quantityTextView.setText(quantity + "");
          }
  
  }
  </code></pre>
  
  <p>An once I run it I just get three screens that look like this... </p>
  
  <p><a href="https://i.stack.imgur.com/GXU7p.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/GXU7p.png" alt="enter image description here"></a></p>