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public class MainActivity extends ActionBarActivity
{
private TextView tv;
private String donnees = "";
private GridView gridView;
private String[] tab_news = null;
@Override
protected void onCreate(Bundle savedInstanceState)
{
//StrictMode.ThreadPolicy policy = new StrictMode.
//ThreadPolicy.Builder().permitAll().build();
//StrictMode.setThreadPolicy(policy);
// retire les titres en haut de page
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN);
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
tv = (TextView) findViewById(R.id.textView1);
gridView = (GridView)findViewById(R.id.gridview);
if(isNetworkAvailable()) new GetData(tv).execute("");
Affichage();
gridView.setOnItemClickListener(new OnItemClickListener()
{ // listener sur le clic pour plus tard
public void onItemClick(AdapterView<?> parent, View v, int position, long id)
{
Bundle objetbunble = new Bundle();
objetbunble.putString("numero", Integer.toString(position));
objetbunble.putString("donnees", donnees);
Intent intent = new Intent(MainActivity.this, detail.class);
intent.putExtras(objetbunble);
startActivity(intent);
}
});
}
private String RecupAdrImage(String param)
{// récupère l'adresse de l'image dans un texte
String retour = "";
int j = param.indexOf("src=");
int k = -1;
if(j != -1) k = param.indexOf((char)34, j+6);
if( (j != -1)&&(k != -1) )
{
retour = param.substring(j+5, k); // -j-5
if(retour.indexOf("./") != 1) retour = retour.replace("./", "http://www.hbcnancysluc.com/");
retour = retour.replace(" ", "%20"); // A voir si toujours utile ?
}
return retour;
}
private class MyAdapter extends BaseAdapter {
private List<Item> items = new ArrayList<Item>();
private LayoutInflater inflater;
public MyAdapter(Context context) {
inflater = LayoutInflater.from(context);
String[] tab_ligne;
String tmpImg = "";
for(int i = 0; i < tab_news.length; i++)
{
tab_ligne = tab_news[i].split("\\|");
tmpImg = RecupAdrImage(tab_ligne[2]);
if(tab_ligne[1].length() > 26) items.add(new Item(tab_ligne[1].substring(0,26), R.drawable.news, tmpImg));
else items.add(new Item(tab_ligne[1], R.drawable.news, tmpImg));
if(i == 2)
{ // cas particulier du bouton convocation (qui n'est pas une news)
items.add(new Item("", R.drawable.convocation, null));
}
}
}
@Override
public int getCount() {
return items.size();
}
@Override
public Object getItem(int i) {
return items.get(i);
}
@Override
public long getItemId(int i) {
return items.get(i).drawableId;
}
@Override
public View getView(int i, View view, ViewGroup viewGroup) {
View v = view;
ImageView picture;
TextView name;
if(v == null) {
v = inflater.inflate(R.layout.gridfile, viewGroup, false);
v.setTag(R.id.picture, v.findViewById(R.id.picture));
v.setTag(R.id.text, v.findViewById(R.id.text));
}
picture = (ImageView)v.getTag(R.id.picture);
name = (TextView)v.getTag(R.id.text);
Item item = (Item)getItem(i);
picture.setImageResource(item.drawableId);
if(item.image != "")
{
new BitmapFromURL(picture, item.image).execute("");
}
name.setText(item.name);
if(item.name == "") name.setVisibility(View.INVISIBLE);
return v;
}
private class Item {
final String name;
final int drawableId;
final String image;
Item(String name, int drawableId, String tmpImg) {
this.name = name;
this.drawableId = drawableId;
this.image = tmpImg;
}
}
}
private Bitmap getBitmapFromURL(String src) {
try { // téléchargement de l'image distante
java.net.URL url = new java.net.URL(src);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setDoInput(true);
connection.connect();
InputStream input = connection.getInputStream();
Bitmap myBitmap = BitmapFactory.decodeStream(input);
return myBitmap;
} catch (IOException e) {
e.printStackTrace();
return null;
}
}
private void sauvegarde()
{ // sauvegarde des données en local
String FILENAME = "fichierdedonnees";
String string = (String) tv.getText();
FileOutputStream fos;
try {
fos = openFileOutput(FILENAME, Context.MODE_PRIVATE);
fos.write(string.getBytes());
fos.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
//tv.setVisibility(View.VISIBLE);
}
public String Recupdonnees()
{ // lecture des données enregistrées en local
String retour = null;
FileInputStream in;
try {
in = openFileInput("fichierdedonnees");
InputStreamReader inputStreamReader = new InputStreamReader(in);
BufferedReader bufferedReader = new BufferedReader(inputStreamReader);
StringBuilder sb = new StringBuilder();
String line;
while ((line = bufferedReader.readLine()) != null) {
sb.append(line);
}
retour = sb.toString();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return retour;
//tv.setVisibility(View.VISIBLE);
}
private boolean isNetworkAvailable() {
ConnectivityManager cm = (ConnectivityManager)
getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo networkInfo = cm.getActiveNetworkInfo();
// si aucun réseau n'est disponible, networkInfo sera null
// sinon, vérifier si nous sommes connectés
if (networkInfo != null && networkInfo.isConnected()) {
return true;
}
return false;
}
private class GetData extends AsyncTask<String, Void, String> {
private TextView display;
GetData(TextView view){
this.display = view;
}
@Override
protected String doInBackground(String... message) {
// appel distant
HttpClient httpclient;
HttpGet request;
HttpResponse response = null;
String result = " ";
try {
httpclient = new DefaultHttpClient();
// mettre en dessous l'url qui génère les données (ici en format brût, tu peux utiliser aussi du JSON)
request = new HttpGet("http://www.tonsite.com/test.php");
response = httpclient.execute(request);
}
catch (Exception e) {
result = "erreur appel http";
}
try {
Reader reader = (new InputStreamReader(response.getEntity().getContent()));
try {
StringBuilder sb = new StringBuilder();
char[] cbuf = new char[8192];
int len;
while ( (len=reader.read(cbuf)) > 0 ) {
sb.append(cbuf, 0, len);
}
result = sb.toString();
} finally {
reader.close();
}
} catch (Exception e) {
result = "erreur import des données";
}
return result;
}
protected void onPostExecute(String result) {
// traitement de retour => l'utilisation du textview n'est plus utile mais ça m'a été utile pour le debuggage
this.display.setText(result);
sauvegarde();
MainActivity.this.Affichage();
}
}
public void Affichage()
{
donnees = Recupdonnees();
if(donnees != "")
{// Traitement des données
// préférence à stocker = |idt1|idt2| => idt1, idt2 a exclure A FAIRE (dans un autre fichier ?)
String[] tab_donnees = donnees.split("\\|-\\|");
String[] tab_categories = tab_donnees[0].split("\\|°\\|");
String[] tab_result = tab_donnees[1].split("\\|°\\|");
tab_news = tab_donnees[2].split("\\|°\\|");
}
gridView.invalidateViews();
gridView.setAdapter(new MyAdapter(this));
}
private class BitmapFromURL extends AsyncTask<String, Void, Bitmap> {
private ImageView picture;
private String chemin;
BitmapFromURL(ImageView view, String param){
this.picture = view;
this.chemin = param;
}
@Override
protected Bitmap doInBackground(String... message)
{
Bitmap result = null;
result = getBitmapFromURL(chemin);
return result;
}
protected void onPostExecute(Bitmap result) {
if(result != null) this.picture.setImageBitmap(result);
}
}
} |
Architecture des applications Android
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