how to retrieve the selected value from spinner and use it in another class? - Android

Question

as demonstrated here by jalopaba, I already created a new class: How do you get the selected value of a Spinner?

public class MyItemSelectedListener implements OnItemSelectedListener {

    public void onItemSelected(AdapterView<?> parent, View view, int pos, long id) {
        String selected = parent.getItemAtPosition(pos).toString();
    }

    public void onNothingSelected(AdapterView parent) {
        // Do nothing.
    }
}

and registering this to the spinner in the original class:

spinner.setOnItemSelectedListener(new MyOnItemSelectedListener());

However, I still can't use that selected string yet to fill in my code in the same class:

textView.setText(selected);

I'm new to this Android anyway, so this question may be too dummy to some of you

Initalize the string variable out side the class . Initialize it in main class above onCreate() Method. — Chirag, Aug 01 '12 at 05:23

score 2 · Accepted Answer · answered Aug 01 '12 at 05:36

2

Add the setText code in the onItemSelected:

public void onItemSelected(AdapterView<?> parent, View view, int pos, long id) {
    yourTextView.setText(parent.getSelectedItem().toString);
}

answered Aug 01 '12 at 05:36

Basant Singh

5,736
2
28
49

this won't work, my textView isn't registered in this MyItemSelectedListener class – Hendra Anggrian Aug 01 '12 at 06:16
Have you initialised your TextView like `yourTextView = (TextView) findViewById();` ?? – Basant Singh Aug 01 '12 at 06:25
And make sure that the TextView is Global, Declare it outside all methods and initialise it in onCreate. – Basant Singh Aug 01 '12 at 06:26
you gave me an idea, I double declared TextView in every class that can modify the value of TextView itself, works like magic! – Hendra Anggrian Aug 02 '12 at 15:44
so you mean to say there is no way i can use that string outside of `onItemSelected`?? I have tried deca;ring the string as global but as soon as I try to use it in my other methods I get a NPE. – Pamela Sillah Oct 16 '17 at 09:33

score 0 · Answer 2 · answered Aug 01 '12 at 05:28

Try this code,I hope It's help you.

final CharSequence[] array_min = {"No 

  Min","100","200","300","400", "500","600","700","800","900","1000",
                  "1100","1200","1300","1400","1500","1600","1700","1800","1900","2000","2500","3000","3500" };

        Spinner s = (Spinner) layout.findViewById(R.id.viewSpin);

        adapter = new ArrayAdapter(this,android.R.layout.simple_spinner_item, array_min);

        s.setAdapter(adapter);
        s.setOnItemSelectedListener(new OnItemSelectedListener() {

            public void onItemSelected(AdapterView<?> parent, View arg1,
                    int arg2, long arg3)
            {
                selItem = parent.getSelectedItem().toString();
            }

            public void onNothingSelected(AdapterView<?> arg0) {
                // TODO Auto-generated method stub
            }
        });

score 0 · Answer 3 · answered Aug 01 '12 at 05:39

0

Use global variable..make following changes in your code

String selected="";

public class MyItemSelectedListener implements OnItemSelectedListener {

public void onItemSelected(AdapterView<?> parent, View view, int pos, long id) {
    selected = parent.getItemAtPosition(pos).toString();
}

public void onNothingSelected(AdapterView parent) {
    // Do nothing.
}

}

textView.setText(selected);

answered Aug 01 '12 at 05:39

Rekha

901
1
11
20

this won't work, my textView is now containing "" value no matter what the selected value of the spinner is – Hendra Anggrian Aug 01 '12 at 06:15

score 0 · Answer 4 · answered Aug 01 '12 at 05:41

After register spinner ,you can get selected item from getSelectedItem() method on any action such ocClick()

 regType = (Spinner) findViewById(R.id.spinner1);
    ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(this, R.array.regType, android.R.layout.simple_spinner_dropdown_item);
    regType.setAdapter(adapter);

public void onClick(View v) { switch (v.getId()) { case R.id.btnSave:

        intent.putExtra("regtype",regType.getSelectedItem().toString());
        startActivity(intent);  

            break;}}

I prefer not to click any button to get the value, I heard we can actually retrieve the value as fast as selecting the spinner — Hendra Anggrian, Aug 01 '12 at 06:20

how to retrieve the selected value from spinner and use it in another class? - Android

4 Answers4