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public class MainActivity extends Activity
{
static final String ACTION_SCAN = "com.google.zxing.client.android.SCAN";
private ProgressDialog pDialog;
public static final int progress_bar_type = 0;
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
//On essaie d'ouvrir un lecteur de QRcode, si oui : on lit; si non : on en télécharge un
public void scanQR(View v)
{
try
{
Intent intent = new Intent(ACTION_SCAN);
intent.putExtra("SCAN MODE", "QR_CODE_MODE");
startActivityForResult(intent, 0);
}
catch (ActivityNotFoundException anfe)
{
showDialog(MainActivity.this, "Aucun scanner trouvé.", "En télécharger un ?", "Oui", "Non").show();
}
}
//On demande à l'utilisateur d'installer un lecteur de QRcode
private static AlertDialog showDialog(final Activity act, CharSequence title, CharSequence message, CharSequence buttonYes, CharSequence buttonNo)
{
AlertDialog.Builder downloadDialog = new AlertDialog.Builder(act);
downloadDialog.setTitle(title);
downloadDialog.setMessage(message);
downloadDialog.setPositiveButton(buttonYes, new DialogInterface.OnClickListener()
{
public void onClick(DialogInterface dialogInterface, int i)
{
Uri uri = Uri.parse("market://search?q=pname:" + "com.google.zxing.client.android");
Intent intent = new Intent(Intent.ACTION_VIEW, uri);
try {
act.startActivity(intent);
}
catch (ActivityNotFoundException ignored)
{
}
}
});
downloadDialog.setNegativeButton(buttonNo, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialogInterface, int i)
{
}
});
return downloadDialog.show();
}
@Override
protected Dialog onCreateDialog(int id) {
switch (id) {
case progress_bar_type:
pDialog = new ProgressDialog(this);
pDialog.setMessage("Telechargement en cours...");
pDialog.setIndeterminate(false);
pDialog.setMax(100);
pDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
pDialog.setCancelable(true);
pDialog.show();
return pDialog;
default:
return null;
}
}
public void onActivityResult(int requestCode, int resultCode, Intent intent)
{
if (requestCode == 0) {
if (resultCode == RESULT_OK) {
String contents = intent.getStringExtra("SCAN_RESULT");
setContentView(R.layout.activity_download);
DownloadTask mDownload = new DownloadTask();
mDownload.execute(contents);
}
}
}
//On télécharge le certificat, on l'installe (ce qui le déplace dans le keystore) puis, si il reste des traces, on le supprime
class DownloadTask extends AsyncTask<String, String, String> {
@Override
protected void onPreExecute() {
super.onPreExecute();
showDialog(progress_bar_type);
}
@Override
protected String doInBackground(String ...f_url) {
try {
Context context = getApplicationContext();
URL url = new URL(f_url[0]);
URLConnection connection = url.openConnection();
connection.connect();
int fileLength = connection.getContentLength();
String fileName = url.getFile().substring(url.getFile().lastIndexOf('/') + 1);
File file = new File(context.getFilesDir().getAbsolutePath() + "/" + fileName);
if (file.exists()) {
file.delete();
}
InputStream input = new BufferedInputStream(url.openStream());
byte[] buffer = new byte[1024];
long total = 0;
FileOutputStream output = context.openFileOutput(fileName, Context.MODE_PRIVATE);
int count;
while ((count = input.read(buffer)) != -1)
{
total += count;
publishProgress("" + (int)((total * 100) / fileLength));
output.write(buffer, 0, count);
}
output.flush();
output.close();
if (file.exists()) {
Intent intent = KeyChain.createInstallIntent();
file = new File(context.getFilesDir().getAbsolutePath() + "/" + fileName);
byte[] p12 = FileUtils.readFileToByteArray(file);
intent.putExtra(KeyChain.EXTRA_PKCS12, p12);
startActivity(intent);
file = new File(context.getFilesDir().getAbsolutePath() + "/" + fileName);
if (file.exists()) {
file.delete();
}
}
else
return null;
} catch (Exception e) {
Log.e("Error: ", e.getMessage());
}
return (null);
}
@Override
protected void onProgressUpdate(String... values) {
pDialog.setProgress(Integer.parseInt(values[0]));
}
@Override
protected void onPostExecute(String fileName) {
try {
wait(100);
}
catch (Exception e) {
Log.e("Error;", e.getMessage());
}
dismissDialog(progress_bar_type);
TextView text = (TextView)findViewById(R.id.textView);
text.setText("Téléchargement terminé, installation en cours");
}
}
} |
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("Il est téléchargé (ou pas) du moment que vous ne regardez pas dans le dossier de l'application, croyez moi !")
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