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<menu xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto" >
    <item
        android:id="@+id/id_menu_most_popular"
        android:icon="@android:drawable/ic_menu_rotate"
        app:showAsAction="never"
        android:title="@string/most_popular_menu"/>
    <item
        android:id="@+id/id_menu_highest_rated"
        android:icon="@android:drawable/ic_menu_rotate"

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@Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        View createdView = inflater.inflate(R.layout.fragment_discover_movie, container, false);
        mainGrid = (GridView)createdView.findViewById(R.id.mainGrid);
        mainGrid.setNumColumns(2);
        mcAdapter = new MovieCoverAdapter(getActivity(),new ArrayList<MovieModel>());
        mainGrid.setAdapter(mcAdapter);
        return createdView;
    }

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<android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_marginBottom="4dp"
    android:layout_marginLeft="4dp"
    android:layout_marginRight="4dp"
    android:layout_marginTop="4dp"
    android:clickable="true"
    android:focusable="true"
    android:foreground="?selectableItemBackground">

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// Na classe MainActivity.java.
Toast.makeText(this, getString(R.string.score_app),Toast.LENGTH_SHORT).show();

// No arquivo res/values/strings.xml.
<string name="score_app">This button will launch the Score app!</string>

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// No arquivo res/values/styles.xml.
<style name="ButtonStyle">
  <item name="android:layout_width">270dp</item>
  <item name="android:layout_height">70dp</item>
  <item name="android:textSize">20dp</item>
  <item name="android:layout_centerHorizontal">true</item>
</style>

// No arquivo content_main.xml.
<?xml version="1.0" encoding="utf-8"?>

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// Definição do método que chega se há conexão com a Internet.
public Boolean hasConnection(Activity activity) {
  ConnectivityManager connectivityManager = (ConnectivityManager) activity.getSystemService(Context.CONNECTIVITY_SERVICE);
  Boolean hasConnection = connectivityManager.getActiveNetworkInfo() != null;
  return hasConnection;
}

public void tellJoke(View view) {
  // ----- Trecho de código que deve ser adicionado. ----->
  if (hasConnection(this)) {

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// Definição do método que chega se há conexão com a Internet.
public Boolean hasConnection(Activity activity) {
  ConnectivityManager connectivityManager = (ConnectivityManager) activity.getSystemService(Context.CONNECTIVITY_SERVICE);
  Boolean hasConnection = connectivityManager.getActiveNetworkInfo() != null;
  return hasConnection;
}

public void tellJoke() {
  // ----- Trecho de código que deve ser adicionado. ----->
  if (hasConnection(this)) {

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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"
    android:id="@+id/scrollview"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical">

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<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    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:orientation="vertical"
    android:padding="@dimen/activity_margin"
    tools:context=".EditorActivity">

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package com.example.android.drones.data;

import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;

import com.example.android.drones.data.DroneContract.DroneEntry;

/**