[英]android Activity intent to a BaseAdapter
I want to know if it's possible to send several informations by intent from an Activity to a BaseAdapter. 我想知道是否有可能通过意图将多个信息从Activity发送到BaseAdapter。
Indeed, I have an application android, and I want to send the mail of the user to an BaseAdapter that contains a listView. 确实,我有一个应用程序android,并且我想将用户的邮件发送到包含listView的BaseAdapter。
So is it possible ? 那有可能吗?
I try like this but I have an error : (I send in the onPostExecute() ) 我尝试这样,但出现错误:(我发送了onPostExecute())
My Activity : 我的活动:
public class ParticipateActivity extends Activity {
// Declare Variables
JSONObject jsonobject;
JSONArray jsonarray;
ListView listview;
ListViewAdapterTournament adapter;
ProgressDialog mProgressDialog;
ArrayList<HashMap<String, String>> arraylist;
static String NOMTOURNAMENT = "nomTournament";
static String NBPLAYERSMAX = "nbPlayersMax";
static String MAIL = "mail";
// To know the main user
public String mail;
// IDs for menu items
private static final int MAIN_MENU = Menu.FIRST;
//php server
private static final String LISTTOURN_URL = "http://10.0.0.35/BD_Projet/liste_tournament.php";
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Get the view from listview_main.xml
setContentView(R.layout.activity_participate);
Intent i = getIntent();
// Get the result of mail
mail = i.getStringExtra("mail");
System.out.println(mail);
// Execute DownloadJSON AsyncTask
new DownloadLT().execute();
}
// DownloadJSON AsyncTask
private class DownloadLT extends AsyncTask<Void, Void, Void> {
// Allow to display an circle Bar
@Override
protected void onPreExecute() {
super.onPreExecute();
// Create a progressdialog
mProgressDialog = new ProgressDialog(ParticipateActivity.this);
// Set progressdialog title
mProgressDialog.setTitle("Android JSON ListTournaments Michaël KOZA");
// Set progressdialog message
mProgressDialog.setMessage("Loading for tournaments...");
mProgressDialog.setIndeterminate(false);
// Show progressdialog
mProgressDialog.show();
}
@Override
protected Void doInBackground(Void... params) {
List<NameValuePair> args = new ArrayList<NameValuePair>();
args.add(new BasicNameValuePair("mail", mail));
// Create an array
arraylist = new ArrayList<HashMap<String, String>>();
// Retrieve JSON Objects from the given URL address (We return just tournaments where there are still places to play)
jsonobject = JSONParser.makeHttpRequest(LISTTOURN_URL, "POST", args);
// checking log for json response
Log.d("Register attempt", jsonobject.toString());
try {
// Locate the array name in JSON
jsonarray = jsonobject.getJSONArray("ListTournaments");
for (int i = 0; i < jsonarray.length(); i++) {
HashMap<String, String> map = new HashMap<String, String>();
jsonobject = jsonarray.getJSONObject(i);
// Retrive JSON Objects
map.put("nomTournament", jsonobject.getString("nomTournament"));
map.put("nbPlayersMax", jsonobject.getString("nbPlayersMax"));
// Set the JSON Objects into the array
arraylist.add(map);
}
} catch (JSONException e) {
Log.e("Error", e.getMessage());
e.printStackTrace();
}
return null;
}
@Override
protected void onPostExecute(Void args) {
// Locate the listview in listview_main.xml
listview = (ListView) findViewById(R.id.listview);
// Pass the results into ListViewAdapter.java
adapter = new ListViewAdapterTournament(ParticipateActivity.this, arraylist);
// Set the adapter to the ListView
listview.setAdapter(adapter);
//intent
Intent i = new Intent(ParticipateActivity.this,ListViewAdapterTournament.class);
i.putExtra("mail", mail);
// Close the progressdialog
mProgressDialog.dismiss();
}
}
}
And my ListView : 和我的ListView:
public class ListViewAdapterTournament extends BaseAdapter {
// Declare Variables
Context context;
LayoutInflater inflater;
ArrayList<HashMap<String, String>> data;
HashMap<String, String> resultp = new HashMap<String, String>();
public String mail, nomT;
public ListViewAdapterTournament(Context context, ArrayList<HashMap<String, String>> arraylist) {
this.context = context;
data = arraylist;
}
/* Permet de savoir le nombre d'item à afficher dans le liste view */
public int getCount() {
return data.size();
}
public Object getItem(int position) {
return null;
}
public long getItemId(int position) {
return 0;
}
public View getView(final int position, View convertView, ViewGroup parent) {
// Declare Variables
TextView nomTournament;
TextView nbPlayersMax;
inflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View itemView = inflater.inflate(R.layout.activity_list_view_adapter_tournament, parent, false);
// Get the position
resultp = data.get(position);
//receive the mail
Intent i = getIntent(); //error
// Get the result of mail
mail = i.getStringExtra("mail");
// Locate the TextViews in listview_item.xml
nomTournament = (TextView) itemView.findViewById(R.id.nomTournament);
nbPlayersMax = (TextView) itemView.findViewById(R.id.nbPlayersMax);
// Capture position and set results to the TextViews
nomTournament.setText(resultp.get(ParticipateActivity.NOMTOURNAMENT));
nbPlayersMax.setText(resultp.get(ParticipateActivity.NBPLAYERSMAX));
// Capture ListView item click
itemView.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
// Get the position
Intent intent = new Intent(context, ChooseTeam.class);
mail = resultp.get(ParticipateActivity.MAIL);
System.out.println(mail);
intent.putExtra("mail", mail);
intent.putExtra("nomTournament", nomT);
// Click on item, on enregistre le joueur dans le tournament et on lui demande de choisir team
context.startActivity(intent);
}
});
return itemView;
}
}
Thank you very much for your help 非常感谢您的帮助
Mickey74 米奇74
To send an informations at another activity without open the other activity, you have to pass by the Shared Preferences. 要在另一个活动中发送信息而不打开另一个活动,您必须绕过“共享首选项”。
To send the informations you have to do that : 要发送信息,您必须这样做:
SharedPreferences myPrefs = this.getSharedPreferences("myPrefs", MODE_WORLD_READABLE);
SharedPreferences.Editor prefsEditor = myPrefs.edit();
prefsEditor.putString(MY_NAME, "Mickey74");
prefsEditor.commit();
And to use this informations in another activity to late : 并在以后的其他活动中使用此信息:
SharedPreferences myPrefs = this.getSharedPreferences("myPrefs", MODE_WORLD_READABLE);
String prefName = myPrefs.getString(MY_NAME, "nothing");
System.out.println(prefName);
The result must to be : Mickey74
结果必须是:
Mickey74
Thank at all for your help. 谢谢您的帮助。
Mickey74 米奇74
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