Android Open Source - ACG My Web View

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License

The source code is released under:

Dit werk (de broncode) mag niet gekopieerd of aangepast worden voor enig doel zonder het contacteren van de maker. Voor vragen of opmerkingen, neem contact op met Bas Verhoog.

Java Source Code

package bas.sie.Antonius;
//w w  w . j av  a2 s.c o m
import java.io.BufferedInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.URL;
import java.net.URLConnection;

import android.app.Activity;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.net.Uri;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.Environment;
import android.webkit.WebChromeClient;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.Toast;

import com.actionbarsherlock.app.ActionBar;
import com.actionbarsherlock.app.SherlockActivity;
import com.actionbarsherlock.view.Menu;
import com.actionbarsherlock.view.MenuInflater;
import com.actionbarsherlock.view.MenuItem;
import com.actionbarsherlock.view.Window;

public class MyWebView extends SherlockActivity {

  String URLhome;
  String Title;
  WebView mWebView;
  public static final int progress_bar_type = 0;

  final Activity activity = this;

  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    // Adds Progress bar Support
    requestWindowFeature(Window.FEATURE_PROGRESS);
    setContentView(R.layout.mywebview);

    Intent startingIntent = getIntent();
    URLhome = startingIntent.getStringExtra("home");
    Title = startingIntent.getStringExtra("title");

    ActionBar actionBar = getSupportActionBar();
    actionBar.setDisplayHomeAsUpEnabled(true);

    mWebView = (WebView) findViewById(R.id.Mywebview);
    mWebView.getSettings().setJavaScriptEnabled(true);
    mWebView.getSettings().setSupportZoom(true);
    mWebView.getSettings().setBuiltInZoomControls(true);
    mWebView.getSettings().setLoadWithOverviewMode(true);
    mWebView.getSettings().setUseWideViewPort(true);

    mWebView.setWebChromeClient(new WebChromeClient() {

      public void onProgressChanged(WebView view, int progress) {
        setTitle("Laden...");
        setSupportProgress(progress * 100);
        if (progress == 100)
          setTitle(Title);
      }
    });

    mWebView.setWebViewClient(new WebViewClient() {
      @Override
      public boolean shouldOverrideUrlLoading(WebView view, String url) {
        view.loadUrl(url);
        return true;
      }

      @Override
      public void onReceivedError(WebView view, int errorCode,
          String description, String failingUrl) {
        Toast.makeText(MyWebView.this, "Fout " + description,
            Toast.LENGTH_SHORT).show();
      }
    });

    final ConnectivityManager conMgr = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
    final NetworkInfo activeNetwork = conMgr.getActiveNetworkInfo();
    if (activeNetwork != null
        && activeNetwork.getState() == NetworkInfo.State.CONNECTED) {
      mWebView.loadUrl(URLhome);
    } else {
      new AlertDialog.Builder(this)
          .setTitle("Internetverbinding")
          .setMessage(
              "Er is geen internetverbinding.\nLaatst opgeslagen lokale versie gebruiken?")
          .setPositiveButton("Ja",
              new DialogInterface.OnClickListener() {
                public void onClick(DialogInterface dialog,
                    int which) {
                  mWebView.loadUrl("file://"
                      + Environment
                          .getExternalStorageDirectory()
                          .getPath() + "/data/"
                      + getPackageName()
                      + "/webpage.html");
                }
              })
          .setNegativeButton("Nee",
              new DialogInterface.OnClickListener() {
                public void onClick(DialogInterface dialog,
                    int which) {
                  finish();
                }
              }).show();
      setTitle(Title);
    }
  }

  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    MenuInflater inflater = getSupportMenuInflater();
    inflater.inflate(R.menu.menu_webview, menu);
    return super.onCreateOptionsMenu(menu);
  }

  @Override
  public boolean onOptionsItemSelected(MenuItem item) {
    switch (item.getItemId()) {
    case android.R.id.home: // Home item
      finish(); // Not an Intent to AntoniusActivity, because that resets
            // the position of AA to the Home tab.
      return true;

    case R.id.web:
      Intent web = new Intent(Intent.ACTION_VIEW);
      web.setData(Uri.parse(mWebView.getUrl()));
      startActivity(web);
      return true;

    case R.id.settings: // Settings item
      Intent i = new Intent(this, Settings.class); // Start Settings.java
                              // Activity
      startActivity(i);
      return true;

    case R.id.about: // About item
      Intent about = new Intent(this, About.class); // Start About.java
                              // Activity
      startActivity(about);
      return true;

    case R.id.save: // Save item
      if (Environment.getExternalStorageState().equals(
          Environment.MEDIA_MOUNTED)) {

        setSupportProgressBarIndeterminateVisibility(true);
        setTitle("Bestand downloaden");

        // execute this when the downloader must be fired
        DownloadFile downloadFile = new DownloadFile();
        downloadFile.execute(URLhome);

        setSupportProgressBarIndeterminateVisibility(false);
        setTitle(Title);

        Toast.makeText(this, "Bestand opgeslagen", Toast.LENGTH_SHORT)
            .show();

      } else {
        Toast.makeText(this, "Kan niet naar de telefoon schrijven",
            Toast.LENGTH_LONG).show();
      }

    default:
      return super.onOptionsItemSelected(item);
    }
  }

  // usually, subclasses of AsyncTask are declared inside the activity class.
  // that way, you can easily modify the UI thread from here
  private class DownloadFile extends AsyncTask<String, Integer, String> {
    @Override
    protected String doInBackground(String... sUrl) {
      try {
        URL url = new URL(URLhome);
        URLConnection connection = url.openConnection();
        connection.connect();

        // download the file
        InputStream input = new BufferedInputStream(url.openStream());
        OutputStream output = new FileOutputStream(Environment
            .getExternalStorageDirectory().getPath()
            + "/data/"
            + getPackageName() + "/webpage.html");

        byte data[] = new byte[1024];
        int count;
        try {
          while ((count = input.read(data)) != -1)
            output.write(data, 0, count);
        } catch (IOException e) {
          e.printStackTrace();
        }

        output.flush();
        output.close();
        input.close();
      } catch (IOException ioe) {
        ioe.printStackTrace();
      }
      return null;
    }
  }
}

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