iPoema.java [COMPLETO]

package com.cubika.iPoema;

import java.io.*;
import java.net.MalformedURLException;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.URL;
import java.net.URLConnection;
import java.util.*;

import android.annotation.TargetApi;
import android.app.AlertDialog;
import android.app.ProgressDialog;
import android.content.*;
import android.content.pm.PackageInfo;
import android.net.*;
import android.content.pm.PackageManager;
import android.os.*;
import android.support.v7.app.*;
import android.support.v4.view.*;
import android.support.v4.app.*;
import android.view.*;
import android.widget.*;
import org.jdom2.*;
import org.jdom2.input.*;
import org.apache.http.util.ByteArrayBuffer;

@TargetApi(Build.VERSION_CODES.CUPCAKE)
public class iPoema extends ActionBarActivity {

    /**
     * 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 static String PATH = Environment.getExternalStorageDirectory()+"/Download/";
    private PackageInfo Pi = null;
    int lenghtOfFile = 0;
    int progress = 0;
    String titulo[] = new String[20];
    String texto[] = new String[20];
    String autor[] = new String[20];
    SectionsPagerAdapter mSectionsPagerAdapter;

    /**
     * The {@link ViewPager} that will host the section contents.
     */
    ViewPager mViewPager;

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

        try {
            Pi = getPackageManager().getPackageInfo(getPackageName(), 0);
        } catch (PackageManager.NameNotFoundException e) { }

        File arquivo = new File(PATH + "iPoema.xml");
        if (arquivo.exists() == true) {
            readXML();
        } else {
            refresh();
        }

        // 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.pager);
        mViewPager.setAdapter(mSectionsPagerAdapter);

    }


    @Override
    public boolean onCreateOptionsMenu(Menu menu) {

        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.i_poema, 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_refresh) {
            refresh();
            return true;
        } else if (id == R.id.action_settings) {
            Intent intent = new Intent(this, Settings.class);
            startActivity(intent);
            return true;
        } else if (id == R.id.action_update) {
            loadAtualizacao();
            return true;
        } else {
            return super.onOptionsItemSelected(item);
        }
    }

    public void readXML() {
        final ProgressDialog d  = new ProgressDialog(this);
        d.setMessage("Recebendo os dados de XML...");
        d.setTitle("Lendo arquivo");
        d.setIndeterminate(false);
        d.setProgress(0);
        d.setMax(100);
        d.setProgressStyle(ProgressDialog.STYLE_SPINNER);
        d.setCancelable(true);
        d.show();
        new Thread(new Runnable() {
            @Override
            public void run() {
                try {
                    Thread.sleep(5000);
                    lerXML.execute();
                } catch (Exception e) {
                    showMessage(e.getClass().getName(), "Não foi possível receber os dados do XML.");
                }
                d.dismiss();
            }
        }).start();
    }

    public String getTitulo(int i) {
        return titulo[i];
    }

    public String getTexto(int i) throws UnsupportedEncodingException {
        String text = null;
        text = texto[i];
        text = text.replaceAll("</p>", "\n");
        text = text.replaceAll("<p>", "");
        text = text.replaceAll("<br/>", "\n");
        text = text.replaceAll("&#8217;", "'");
        text = text.replaceAll("&#8220;", "\"");
        text = text.replaceAll("&#8221;", "\"");
        return text;
    }

    public String getAutor(int i) {
        return autor[i];
    }

    public void showMessage(String title, String text) {
        AlertDialog.Builder builder = new AlertDialog.Builder(this);
        builder.setCancelable(false);
        builder.setTitle(title);
        builder.setMessage(text);
        builder.setIcon(R.drawable.ic_launcher);
        builder.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                dialog.cancel();
            }
        });
        AlertDialog alert = builder.create();
        alert.show();
    }

    public void loadAtualizacao() {
        final ProgressDialog d  = new ProgressDialog(this);
        d.setMessage("Checando versão de iPoema...");
        d.setTitle("Aguarde");
        d.setIndeterminate(false);
        d.setProgress(0);
        d.setMax(100);
        d.setProgressStyle(ProgressDialog.STYLE_SPINNER);
        d.setCancelable(true);
        d.show();
        new Thread(new Runnable() {
            @Override
            public void run() {
                try {
                    Thread.sleep(5000);
                    atualizaApp.execute();
                } catch (Exception e) {
                    showMessage(e.getClass().getName(), "Não foi possível receber os dados de versão.");
                }
                d.dismiss();
            }
        }).start();
    }

    public void refresh() {
        final ProgressDialog d  = new ProgressDialog(this);
        d.setMessage("Recebendo dados de Feed");
        d.setTitle("Atualizando");
        d.setIndeterminate(false);
        d.setProgress(0);
        d.setMax(100);
        d.setProgressStyle(ProgressDialog.STYLE_SPINNER);
        d.setCancelable(true);
        d.show();
        new Thread(new Runnable() {
            @Override
            public void run() {
                try {
                    Thread.sleep(3000);
                    getFeed.execute();
                } catch (Exception e) {
                    showMessage(e.getClass().getName(), "Não foi possível receber os dados de Feed.");
                }
                d.dismiss();
            }
        }).start();
    }

    AsyncTask<Void, Void, String> getFeed = new AsyncTask<Void, Void, String>(){
        @Override
        protected String doInBackground(Void... params) {
            String retorno = "não";
            try {
                // Baixar Feed
                URL url = new URL("http://www.ipoema.tumblr.com/rss");
                File file = new File(PATH + "iPoema.xml");
                file.delete();
                URLConnection ucon = url.openConnection();
                InputStream is = ucon.getInputStream();
                BufferedInputStream bis = new BufferedInputStream(is);
                ByteArrayBuffer baf = new ByteArrayBuffer(50);
                lenghtOfFile = ucon.getContentLength();
                int current = 0;
                while ((current = bis.read()) != -1) {
                    baf.append((byte) current);
                    progress = current;
                }
                FileOutputStream fos = new FileOutputStream(file);
                fos.write(baf.toByteArray());
                fos.close();
                retorno = "sim";
            } catch (IOException e) {
                showMessage(e.getClass().getName(), "Erro ao tentar realizar o download do arquivo.");
            }
            return retorno;
        }

        @Override
        protected void onPostExecute(String s) {
            super.onPostExecute(s);
            if (s.equals("sim")) {
                try {
                    lerXML.execute();
                } catch (Exception e) {
                    showMessage(e.getClass().getName(), "Erro ao tentar realizar a leitura do arquivo.");
                }
            }
        }
    };

    AsyncTask<Void, Void, String> lerXML = new AsyncTask<Void, Void, String>(){
        @Override
        protected String doInBackground(Void... params) {
            String state = "erro";
            try {
                // Ler XML
                showMessage("iPoema", "Arquivo lido com sucesso");
                File f = new File(PATH + "iPoema.xml");
                SAXBuilder sb = new SAXBuilder();
                Document d = sb.build(f);
                Element mural = d.getRootElement();
                List<Element> elements = mural.getChildren("channel");
                Iterator<Element> i = elements.iterator();
                int x = 0;
                //for (int x = 0; x <= elements.size(); x++) {
                while (i.hasNext()) {
                    //Element node = (Element) elements.get(x);
                    Element node = (Element) i.next();
                    Element item = node.getChild("item");

                    titulo[x] = item.getChildText("title");
                    texto[x] = item.getChildText("description");
                    autor[x] = item.getChildText("category");
                    x++;
                }
                state = "ok";
            } catch (JDOMException e) {
                showMessage(e.getClass().getName(), "Erro ao tentar realizar a leitura do XML.");
            } catch (IOException e) {
                showMessage(e.getClass().getName(), "Erro ao tentar realizar a leitura do XML.");
            }
            return state;
        }

        @Override
        protected void onPostExecute(String s) {
            super.onPostExecute(s);
            if (s.equals("ok")) {
                try {
                    // Títulos
                    TextView titulo1 = (TextView) findViewById(R.id.titulo1);
                    TextView titulo2 = (TextView) findViewById(R.id.titulo2);
                    TextView titulo3 = (TextView) findViewById(R.id.titulo3);
                    TextView titulo4 = (TextView) findViewById(R.id.titulo4);

                    // Textos
                    TextView texto1 = (TextView) findViewById(R.id.texto1);
                    TextView texto2 = (TextView) findViewById(R.id.texto2);
                    TextView texto3 = (TextView) findViewById(R.id.texto3);
                    TextView texto4 = (TextView) findViewById(R.id.texto4);

                    // SetText
                    titulo1.setText(getTitulo(0));
                    texto1.setText(getTexto(0)+"\n\n#"+getAutor(0)+"\n\n");

                    titulo2.setText(getTitulo(1));
                    texto2.setText(getTexto(1)+"\n\n#"+getAutor(1)+"\n\n");

                    titulo3.setText(getTitulo(2));
                    texto3.setText(getTexto(2)+"\n\n#"+getAutor(2)+"\n\n");

                    titulo4.setText(getTitulo(3));
                    texto4.setText(getTexto(3)+"\n\n#"+getAutor(3)+"\n\n");

                    // Exibe
                    titulo1.setVisibility(TextView.VISIBLE);
                    texto1.setVisibility(TextView.VISIBLE);

                    titulo2.setVisibility(TextView.VISIBLE);
                    texto2.setVisibility(TextView.VISIBLE);

                    titulo3.setVisibility(TextView.VISIBLE);
                    texto3.setVisibility(TextView.VISIBLE);

                    titulo4.setVisibility(TextView.VISIBLE);
                    texto4.setVisibility(TextView.VISIBLE);
                } catch (Exception e) {
                    showMessage(e.getClass().getName(), "Erro ao tentar realizar a leitura do arquivo.");
                }
            }
        }
    };

    AsyncTask<Void, Void, String> atualizaApp = new AsyncTask<Void, Void, String>(){
        @Override
        protected String doInBackground(Void... params) {
            String versao = "0";
            try {
                // Baixar iPoema.txt
                URL url = new URL("http://www.xadees.xpg.com.br/iPoema.txt");
                File file = new File(PATH + "iPoema.txt");
                file.delete();
                URLConnection ucon = url.openConnection();
                InputStream is = ucon.getInputStream();
                BufferedInputStream bis = new BufferedInputStream(is);
                ByteArrayBuffer baf = new ByteArrayBuffer(50);
                lenghtOfFile = ucon.getContentLength();
                int current = 0;
                while ((current = bis.read()) != -1) {
                    baf.append((byte) current);
                    progress = current;
                }
                FileOutputStream fos = new FileOutputStream(file);
                fos.write(baf.toByteArray());
                fos.close();

                // Ler iPoema.txt
                StringBuilder text = new StringBuilder();
                BufferedReader br = new BufferedReader(new FileReader(file));
                String line;
                while ((line = br.readLine()) != null) {
                    text.append(line);
                }
                versao = text.toString();
            } catch (IOException e) {
                showMessage(e.getClass().getName(), "Erro ao tentar realizar o download do arquivo.");
            } catch (Exception e) {
                showMessage(e.getClass().getName(), "Erro ao tentar realizar a leitura do arquivo.");
            }

            return versao;
        }

        @Override
        protected void onPostExecute(String s) {
            super.onPostExecute(s);
            int vAtual = Pi.versionCode;
            int vAPK = Integer.parseInt(s);

            if (vAtual < vAPK) {
                try {
                    // Baixar
                    URL url = new URL("http://www.xadees.xpg.com.br/iPoema%20for%20Android.apk");
                    File file = new File(PATH + "iPoema.apk");
                    file.delete();
                    URLConnection ucon = url.openConnection();
                    InputStream is = ucon.getInputStream();
                    BufferedInputStream bis = new BufferedInputStream(is);
                    ByteArrayBuffer baf = new ByteArrayBuffer(50);
                    lenghtOfFile = ucon.getContentLength();
                    int current = 0;
                    while ((current = bis.read()) != -1) {
                        baf.append((byte) current);
                        progress = current;
                    }
                    FileOutputStream fos = new FileOutputStream(file);
                    fos.write(baf.toByteArray());
                    fos.close();

                    // Instalar
                    Intent intent = new Intent(Intent.ACTION_VIEW);
                    intent.setDataAndType(Uri.fromFile(new File(PATH + "iPoema.apk")), "application/vnd.android.package-archive");
                    //java.lang.Process proc = Runtime.getRuntime().exec(new String[]{"su", "-c", "adb install -r " + PATH + "iPoema.apk"});
                    //proc.waitFor();
                    startActivityForResult(intent,0);
                } catch (IOException e) {
                    showMessage(e.getClass().getName(), "Erro ao tentar realizar o download do pacote.");
                }
            } else {
                showMessage("iPoema", "iPoema já está atualizado.");
            }
        }
    };




    /**
     * 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) {
            Locale l = Locale.getDefault();
            switch (position) {
                case 0:
                    return getString(R.string.title_section1).toUpperCase(l);
                case 1:
                    return getString(R.string.title_section2).toUpperCase(l);
                case 2:
                    return getString(R.string.title_section3).toUpperCase(l);
            }
            return null;
        }
    }

    /**
     * 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";

        /**
         * 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;
        }

        public PlaceholderFragment() {
        }

        @Override
        public View onCreateView(LayoutInflater inflater, ViewGroup container,
                Bundle savedInstanceState) {
            View rootView = inflater.inflate(R.layout.fragment_i_poema, container, false);

            // Componenetes
            TextView section_label = (TextView) rootView.findViewById(R.id.section_label);
            ImageView appLogo = (ImageView) rootView.findViewById(R.id.appLogo);

            // AboutApp() {
            TextView aboutApp1 = (TextView) rootView.findViewById(R.id.aboutApp1);
            TextView aboutApp2 = (TextView) rootView.findViewById(R.id.aboutApp2);
            TextView appName = (TextView) rootView.findViewById(R.id.appName);
            TextView appVersion = (TextView) rootView.findViewById(R.id.appVersion);
            TextView appAutor = (TextView) rootView.findViewById(R.id.appAutor);
            TextView appURL = (TextView) rootView.findViewById(R.id.appURL);

            appVersion.setText("Versão 1.4.0");
            // }

            // AboutAutor() {
            ImageView autorFoto = (ImageView) rootView.findViewById(R.id.autorFoto);
            TextView aboutPotynho = (TextView) rootView.findViewById(R.id.aboutPotynho);
            // }

            switch (getArguments().getInt(ARG_SECTION_NUMBER)) {
                case 1:
                    section_label.setText(getString(R.string.title_section1));
                    appLogo.setVisibility(ImageView.GONE);
                    autorFoto.setVisibility(ImageView.GONE);
                    aboutPotynho.setVisibility(TextView.GONE);
                    aboutApp1.setVisibility(TextView.GONE);
                    aboutApp2.setVisibility(TextView.GONE);
                    appName.setVisibility(TextView.GONE);
                    appVersion.setVisibility(TextView.GONE);
                    appAutor.setVisibility(TextView.GONE);
                    appURL.setVisibility(TextView.GONE);
                    break;
                case 2:
                    section_label.setText(getString(R.string.title_section2));
                    appLogo.setVisibility(ImageView.VISIBLE);
                    autorFoto.setVisibility(ImageView.GONE);
                    aboutPotynho.setVisibility(TextView.GONE);
                    aboutApp1.setVisibility(TextView.VISIBLE);
                    aboutApp2.setVisibility(TextView.VISIBLE);
                    appName.setVisibility(TextView.VISIBLE);
                    appVersion.setVisibility(TextView.VISIBLE);
                    appAutor.setVisibility(TextView.VISIBLE);
                    appURL.setVisibility(TextView.VISIBLE);
                    break;
                case 3:
                    section_label.setText(getString(R.string.title_section3));
                    appLogo.setVisibility(ImageView.GONE);
                    autorFoto.setVisibility(ImageView.VISIBLE);
                    aboutPotynho.setVisibility(TextView.VISIBLE);
                    aboutApp1.setVisibility(TextView.GONE);
                    aboutApp2.setVisibility(TextView.GONE);
                    appName.setVisibility(TextView.GONE);
                    appVersion.setVisibility(TextView.GONE);
                    appAutor.setVisibility(TextView.GONE);
                    appURL.setVisibility(TextView.GONE);
                    break;
                default:
                    section_label.setText("404: NOT FOUND!");
                    break;
            }
            return rootView;
        }
    }

}