passage des donnes entre activity

salut les informaticiens , je veux passer des donnés entre mes deux activity mes ça n'a pas marchait avec ce code :roll:

erreur : java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=1, result=-1, data=Intent { cmp=ttstpackage.tttst/.EnterDataActivity (has extras) }} to activity {ttstpackage.tttst/ttstpackage.tttst.MyActivity}: java.lang.NullPointerException
at android.app.ActivityThread.deliverResults(ActivityThread.java:3319)
at android.app.ActivityThread.performResumeActivity(ActivityThread.java:2729)
************at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:2771)
************at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2235)
************at android.app.ActivityThread.access$600(ActivityThread.java:141)
************at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
************at android.os.Handler.dispatchMessage(Handler.java:99)
************at android.os.Looper.loop(Looper.java:137)
************at android.app.ActivityThread.main(ActivityThread.java:5039)
************at java.lang.reflect.Method.invokeNative(Native Method)
************at java.lang.reflect.Method.invoke(Method.java:511)
************at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
************at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
************at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.NullPointerException
at ttstpackage.tttst.MyActivity.onActivityResult(MyActivity.java:75)
at android.app.Activity.dispatchActivityResult(Activity.java:5293)
at android.app.ActivityThread.deliverResults(ActivityThread.java:3315)
************at android.app.ActivityThread.performResumeActivity(ActivityThread.java:2729)
************at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:2771)
************at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2235)
************at android.app.ActivityThread.access$600(ActivityThread.java:141)
************at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
************at android.os.Handler.dispatchMessage(Handler.java:99)
************at android.os.Looper.loop(Looper.java:137)
************at android.app.ActivityThread.main(ActivityThread.java:5039)
************at java.lang.reflect.Method.invokeNative(Native Method)

voila le code :
EnterDataActivity :

Code:

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 public class EnterDataActivity extends Activity {
 
    EditText   edit_name;
    EditText edit_dated, edit_datef;
 
    /**
     * Called when the activity is first created.
     */
    @Override
    public void onCreate(Bundle savedInstanceState) {
 
        super.onCreate(savedInstanceState);
        setContentView(R.layout.enter_data);
 
        edit_name = (EditText) findViewById(R.id.et_person_name);
        edit_dated = (EditText) findViewById(R.id.et_person_pin);
        edit_datef = (EditText) findViewById(R.id.et_person_pin2);
    }
 
    public void onClickAdd (View btnAdd) {
 
        String pName = edit_name.getText().toString();
        int pdated = Integer.parseInt(edit_dated.getText().toString());
        int pdatef = Integer.parseInt(edit_datef.getText().toString());
 
        if ( pName.length() != 0 && pdated != 0 && pdatef != 0 ) {
 
 
 
            Intent newIntent = getIntent();
            newIntent.putExtra("tag_pname", pName);
            newIntent.putExtra("tag_pdated", pdated);
            newIntent.putExtra("tag_pdatef", pdatef);
 
            this.setResult(RESULT_OK, newIntent);
 
            finish();
        }
    }
}

MyActivity :

Code:

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 public class MyActivity extends Activity {
 
    private CustomCursorAdapter customAdapter;
    private ProjetHelper databaseHelper;
    private static final int ENTER_DATA_REQUEST_CODE = 1;
    private ListView listView;
    String    projetName;
    int dated,datef;
 
    private static final String TAG = MyActivity.class.getSimpleName();
 
    /**
     * Called when the activity is first created.
     */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
 
        databaseHelper = new ProjetHelper(this);
 
        listView = (ListView) findViewById(R.id.list_data);
        listView.setOnItemClickListener(new OnItemClickListener() {
 
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                Log.d(TAG, "clicked on item: " + position);
            }
        });
 
        // Database query can be a time consuming task ..
        // so its safe to call database query in another thread
        // Handler, will handle this stuff for you <img src="http://s0.wp.com/wp-includes/images/smilies/icon_smile.gif?m=1129645325g" alt=":)" class="wp-smiley">
 
        new Handler().post(new Runnable() {
            @Override
            public void run() {
                customAdapter = new CustomCursorAdapter(MyActivity.this, databaseHelper.getAllData());
                listView.setAdapter(customAdapter);
            }
        });
    }
 
    public void onClickEnterData(View btnAdd) {
 
        startActivityForResult(new Intent(this, EnterDataActivity.class), ENTER_DATA_REQUEST_CODE);
 
    }
 
    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
 
        super.onActivityResult(requestCode, resultCode, data);
 
        if (requestCode == ENTER_DATA_REQUEST_CODE && resultCode == RESULT_OK) {
 
            projetName=getIntent().getExtras().getString("tag_pname");
            dated=getIntent().getExtras().getInt("tag_pdated");
            datef= getIntent().getExtras().getInt("tag_pdatef");
            MesProjets p = new MesProjets(dated,datef,projetName);
            databaseHelper.insertprojet( p);
 
            //customAdapter.changeCursor(databaseHelper.getAllData());
        }
    }
    public class CustomCursorAdapter extends CursorAdapter {
 
        public CustomCursorAdapter(Context context, Cursor c) {
            super(context, c);
        }
 
        @Override
        public View newView(Context context, Cursor cursor, ViewGroup parent) {
            // when the view will be created for first time,
            // we need to tell the adapters, how each item will look
            LayoutInflater inflater = LayoutInflater.from(parent.getContext());
            View retView = inflater.inflate(R.layout.single_row_item, parent, false);
 
            return retView;
        }
 
        @Override
        public void bindView(View view, Context context, Cursor cursor) {
            // here we are setting our data
            // that means, take the data from the cursor and put it in views
 
            TextView textViewProjetName = (TextView) view.findViewById(R.id.tv_person_name);
            textViewProjetName.setText(cursor.getString(cursor.getColumnIndex(cursor.getColumnName(1))));
 
            TextView textViewProjetdated = (TextView) view.findViewById(R.id.tv_person_pin);
            textViewProjetdated.setText(cursor.getString(cursor.getColumnIndex(cursor.getColumnName(2))));
            TextView textViewProjetdatef = (TextView) view.findViewById(R.id.tv_person_pin2);
            textViewProjetdatef.setText(cursor.getString(cursor.getColumnIndex(cursor.getColumnName(3))));
        }
    }
}

Bonjour,

je n'en suis pas certain, mais je pense que ton problème vienne du fait que tu fasse un finish.
En faisant ton finish, tu vas supprimer les variables associés à ta vue. Donc tous les paramètres de la vue suivante, les valeurs que tu cherche seront donc à null. On a donc une exception NullPointerException.

essaie en remplaçant ton finish par :

Code:

this.OnPause();

Bonjour,

Citation:

Envoyé par papabury59

je n'en suis pas certain, mais je pense que ton problème vienne du fait que tu fasse un finish.

Même pas, c'est normal de faire finish() quand on souhaite renvoyer un résultat à l'activity appelante.

Moi par contre, je trouve que le code de l'activity EnterDataActivity est un peu flou. La méthode onClickAdd je ne vois nulle part où tu l'as évoquée. Peut être dans le fichier layout de l'activity mais je ne sais pas trop.

Merci bqq ;), j'ai réussie a résoudre le problème, je me suis trempait dans l 'intent car au lieu de mettre

Code:

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   projetName =data.getExtras().getString("tag_pname");
            dated =data.getExtras().getInt("tag_pdated");
            datef= data.getExtras().getInt("tag_pdatef");

j'ais fait:

Code:

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projetName =getintent().getExtras().getString("tag_pname");
            dated =getintent().getExtras().getInt("tag_pdated");
            datef= getintent().getExtras().getInt("tag_pdatef");