Setting spinner value depending on number picked?

Question

I am not sure if this is the right way, I need some help to solve this problem.I want to select a number from the NumberPicker. After selecting, I expect the setOnValueChangedListener to be able to capture the value and run a for loop and store the resulting values in an arraylist. Next, i want the loop values to be displayed in my spinner . But i am getting an error message saying "cannot resolve constructor ArrayAdapter(....)" and when i run the app, i get this error message :

"Error:(79, 58) error: no suitable constructor found for ArrayAdapter(,int,List) constructor ArrayAdapter.ArrayAdapter(Context,int,int,List) is not applicable (actual and formal argument lists differ in length) constructor ArrayAdapter.ArrayAdapter(Context,int,List) is not applicable (actual argument cannot be converted to Context by method invocation conversion) constructor ArrayAdapter.ArrayAdapter(Context,int,int,Object[]) is not applicable (actual and formal argument lists differ in length) constructor ArrayAdapter.ArrayAdapter(Context,int,Object[]) is not applicable (actual argument cannot be converted to Context by method invocation conversion) constructor ArrayAdapter.ArrayAdapter(Context,int,int) is not applicable (actual argument cannot be converted to Context by method invocation conversion) constructor ArrayAdapter.ArrayAdapter(Context,int) is not applicable (actual and formal argument lists differ in length)"

      @Override    
     protected void onCreate(Bundle savedInstanceState) {        

super.onCreate(savedInstanceState);
           setContentView(R.layout.new_item);
           final List<Integer> resultInteger = new ArrayList<Integer>(); // to store the integer value

   final Spinner hourSpinner = (Spinner) findViewById(R.id.hourSpinner);


    final NumberPicker HourPicker = (NumberPicker) findViewById(R.id.HourNumberPicker);
    HourPicker.setMinValue(9);
    HourPicker.setMaxValue(15);
    HourPicker.setWrapSelectorWheel(false);

    HourPicker.setOnValueChangedListener(new NumberPicker.OnValueChangeListener() {
        @Override
        public void onValueChange(NumberPicker picker, int oldVal, int newVal) {

            Integer value = HourPicker.getValue();

            for (int index = 0; index == value; index++)
            {
                resultInteger.add(index);
            }

          ArrayAdapter<CharSequence> hourAdapter = new ArrayAdapter(this, android.R.layout.simple_spinner_item, resultInteger);
            hourAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
            hourSpinner.setAdapter(hourAdapter);
    }
    });
}

Thank you.

Thanks. It's working fine now but i am having some issues with the for loop as nothing is showing in my spinner @Ram — topacoBoy, Apr 05 '16 at 05:25
Why that for loop is required? just add value to resultInteger list. — Ram Prakash Bhat, Apr 05 '16 at 05:38

myoungjin · Accepted Answer · 2016-04-05T05:24:58.507

1

change from this to YourActivity.this

new ArrayAdapter(this, ...)

to

new ArrayAdapter<Integer>(YourActivity.this, ...)

check this code.

hourPicker.setOnValueChangedListener(new NumberPicker.OnValueChangeListener() {
        @Override
        public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
            Integer value = hourPicker.getValue();

            resultInteger.clear();
            for (int index = 0; index < value; index++) {
                resultInteger.add(index);
            }

            ArrayAdapter<Integer> hourAdapter = new ArrayAdapter<>(YourActivity.this, android.R.layout.simple_spinner_item, resultInteger);
            hourAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
            hourSpinner.setAdapter(hourAdapter);
        }
    });

edited Apr 05 '16 at 05:24

answered Apr 05 '16 at 04:55

myoungjin

895
1
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It is working but the for loop is not working. Is there something that i am missing ? – topacoBoy Apr 05 '16 at 05:00
check @Ram's comment. – myoungjin Apr 05 '16 at 05:13
@topacoBoy check the answer. – myoungjin Apr 05 '16 at 05:25
Not sure, try using List and convert int to string using String.valueOf(int) – Amit Tumkur Apr 05 '16 at 05:35
It is working already. Thank you @dbk for helping me out. Btw, why did you put `ArrayAdapter<>` ? – topacoBoy Apr 05 '16 at 05:36
you can replace explicit type argument with <> – myoungjin Apr 05 '16 at 05:39

Rahul Wadhai · Answer 2 · 2016-04-05T05:32:11.147

@topacoboy on scroll you want to add number in spinner? try following code.

HourPicker = (NumberPicker) findViewById(R.id.numberPicker);
    HourPicker.setMinValue(9);
    HourPicker.setMaxValue(15);
    HourPicker.setWrapSelectorWheel(false);
     resultInteger = new ArrayList<Integer>();
    HourPicker.setOnValueChangedListener(new NumberPicker.OnValueChangeListener() {
        @Override
        public void onValueChange(NumberPicker picker, int oldVal, int newVal) {

            Integer value = HourPicker.getValue();

           // for (int index = 0; index == value; index++) {
                resultInteger.add(value);
           //}

            ArrayAdapter<Integer> hourAdapter = new ArrayAdapter(MainActivity.this, android.R.layout.simple_spinner_item, resultInteger);
            hourAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
            hourSpinner.setAdapter(hourAdapter);
        }
    });

Remove for loop. add direct before adding in array list check this number list.contain() if number is present then don't add. — Rahul Wadhai, Apr 05 '16 at 05:28
I wanted it to loop the value selected by the user and display it so that is why i needed the for loop. Anyway i got i fixed. Thanks for the help man @RahulWadhai — topacoBoy, Apr 05 '16 at 05:39

Setting spinner value depending on number picked?

2 Answers2