package com.example.admin.funfacts;

        import android.app.Activity;
        import android.content.DialogInterface;
        import android.os.Bundle;
        import android.view.Menu;
        import android.view.MenuItem;
        import android.view.View;
        import android.widget.Button;
        import android.widget.TextView;


public class FunFactsActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_fun_facts);

        // Declare our View variables and assign the variables from the layout file
        final TextView factLabel = (TextView) findViewById(R.id.factTextView);
        Button showFactButton = (Button) findViewById(R.id.showFactButton);
        View.OnClickListener listener = new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                // update the fact file with a new fact
                String fact = "Ostriches can run faster than horses.";
                factLabel.setText(fact);
            }
        };
        showFactButton.setOnClickListener(listener);


    }


    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.fun_facts, 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();
        if (id == R.id.action_settings) {
            return true;
        }
        return super.onOptionsItemSelected(item);
    }
}

<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:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:paddingBottom="@dimen/activity_vertical_margin"
    tools:context=".FunFactsActivity"
    android:background="#ff51b46d">

    <TextView
        android:text="Did you know?"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="24sp"
        android:textColor="#80ffffff"
        android:id="@+id/TextView" />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Ants stretch when they wake up in the morning."
        android:id="@+id/factTextView"
        android:layout_centerVertical="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        android:textSize="24sp"
        android:textColor="@android:color/white" />

    <Button
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:id="@+id/showFactButton"
        android:visibility="invisible"
        android:singleLine="true"
        android:layout_alignParentRight="true"
        android:layout_alignParentEnd="true" />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="(Touch for next Fun Fact)"
        android:id="@+id/newFunFactTextView"
        android:textSize="15sp"
        android:textColor="#82ffffff"
        android:layout_below="@+id/factTextView"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="82dp" />

</RelativeLayout>