Wie man ausgewählte position aus Spinner mit SimpleAdapter

Werde ich die Antwort auf die Frage : "beste Weg, um die position des Elements, die ich benötigen für die setSelection () - Methode" ich hoffe, es ist das, was Sie für Fragen.

Ich ändern SimpleAdapter mit ArrayAdapter.

Ich prefere erstellen Sie ein Objekt für jedes Ergebnis für Sie sind DTB-Anfrage und anzeigen des Objektes in die spinner. So können Sie auf jedes Ergebnis leicht.

wie diese :

public class test {
    private String TAG = "test";

    private Activity curAct;
    private Spinner spinner;
    private SpnObj[] spinnerOptions;

    public test(Activity curAct) {
        this.curAct = curAct;
    }

    public void test() {
        this.spinner = new Spinner(this.curAct);
        this.spinnerOptions = this.getSpnContent();

        final ArrayAdapter spinnerAdapter = new ArrayAdapter<>(this.curAct, android.R.layout.simple_spinner_item, spinnerOptions);
        spinnerAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        this.spinner.setAdapter(spinnerAdapter);

        //setSelection with item id = 1
        this.preSelectItem(1);

        //setSelection with item some = 'some'
        this.preSelectItem("some");

        //get selectedItem
        SpnObj selectedItem = this.getSelectedItem();

        Log.d(TAG, "the current selected item id is : " + selectedItem.id);
        Log.d(TAG, "the current selected item some is : " + selectedItem.some);
    }

    //this method should be used when you need to access on you're selectedItem
    public SpnObj getSelectedItem() {
        return (SpnObj) this.spinner.getSelectedItem();
    }

    //this method should be used for set the selection on a item with the id => maybe that was what you're asking for
    public void preSelectItem(int id) {
        boolean doWeStopTheLoop = false;

        for (int i = 0; i < this.spinnerOptions.length && !doWeStopTheLoop; i++) {
            if (((SpnObj) this.spinner.getItemAtPosition(i)).id == id) {
                this.spinner.setSelection(i);
                doWeStopTheLoop = true; //you can use break; too
            }
        }
    }

    //this method should be used for set the selection on a item with the id => maybe that was what you're asking for
    //surcharge for 'some' column
    public void preSelectItem(String some) {
        boolean doWeStopTheLoop = false;

        for (int i = 0; i < this.spinnerOptions.length && !doWeStopTheLoop; i++) {
            if (((SpnObj) this.spinner.getItemAtPosition(i)).some.equals(some)) {
                this.spinner.setSelection(i);
                doWeStopTheLoop = true; //you can use break; too
            }
        }
    }

    private SpnObj[] getSpnContent() {      //this method must be call in a thread
        SQLiteDatabase db = this.curAct.openOrCreateDatabase("database", 0, null);
        String query = "select * from table";
        Cursor ps = db.rawQuery(query, null);

        SpnObj[] spnContent = new SpnObj[ps.getColumnCount()];

        if (ps.getColumnCount() > 0) {
            int iterator = 0;
            while (ps.moveToNext()) {
                spnContent[iterator] = new SpnObj(
                        ps.getInt(ps.getColumnIndex("Id")),
                        ps.getString(ps.getColumnIndex("Some"))
                );

                iterator++;
            }
        } else {
            //no rows : insert code here if you want manage this
        }

        db.close();
        ps.close();

        return spnContent;
    }
}

//this object is only encapsulate the DTB result in a java class, so we can work easily with
class SpnObj {
    public int id;
    public String some;

    public SpnObj(int id, String some) {
        this.id = id;
        this.some = some;
    }

    @Override
    public String toString() {          //important ! this method will be used for display the value in the dropdown list from the spinner
        return this.some;
    }
}