Spinner item gets automatically selected upon entering activity. How do I avoid this?

Question

I have a spinner in my Android app, and its onItemSelected() event automatically gets triggered upon entering the activity.

How do I avoid this?

Answer 1

Simple and easy is this... validate with a boolean to see if is first time...

Spinner mySpinner = (Spinner)findViewById(R.id.spinner_xml_pro);
        mySpinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
            @Override
            public void onItemSelected(AdapterView<?> adapterView, View view, int i, long l) {
                if(isSpinnerInitial){ // globar var boolean isSpinnerInitial = false;
                 //do something
               }else
                    isSpinnerInitial=true;
            }

            @Override
            public void onNothingSelected(AdapterView<?> adapterView) {

            }
        });

Check this with spinner.post(new Runnable()...) or this other my source

Answer 2

You can avoid it by ignoring the first click by,

private boolean isSpinnerInitial = true; //As global variable

public void onItemSelected(xxx xxx, xxx xxx, xxx xxx, xxx xxx) {
    if(isSpinnerInitial) {
        isSpinnerInitial = false;
        return;
    }
    // Write your code here
}

Answer 3

We can use a flag, and just enable it when the spinner is really touched.

private boolean isSpinnerTouched = false; 

spinner.setOnTouchListener(new OnTouchListener() {
            @Override
            public boolean onTouch(View v, MotionEvent event) {
                isSpinnerTouched = true;
                return false;
            }
        });
spinner.setOnItemSelectedListener(new OnItemSelectedListener() {
                @Override
                public void onItemSelected(AdapterView<?> adapter, View arg1,
                        int arg2, long arg3) {
                    if (!isSpinnerTouched) return;
                    // do what you want 
                    }
        });

Answer 4

I have found a solution for this problem and posted it here (with code sample):

Spinner onItemSelected() executes when it is not suppose to

Answer 5

There are no any way to avoid this.

You may add some flag, indicating readiness of your application and use it in your onItemSelected() method to decide, what to do in each case.

Answer 6

I have solved this issue, You can avoid this issue by not setting any default values to the spinner

        int initialposition=spinner.getSelectedItemPosition();
        spinner.setSelection(initialposition, false);

This will avoid entering into onItemSelected()