Android Spinner: Get the selected item change event


Question

How can you set the event listener for a Spinner when the selected item changes?

Basically what I am trying to do is something similar to this:

spinner1.onSelectionChange = handleSelectionChange;

void handleSelectionChange(Object sender){
    //handle event
}
1
374
7/26/2019 10:38:56 AM

Accepted Answer

Some of the previous answers are not correct. They work for other widgets and views, but the documentation for the Spinner widget clearly states:

A spinner does not support item click events. Calling this method will raise an exception.

Better use OnItemSelectedListener() instead:

spinner.setOnItemSelectedListener(new OnItemSelectedListener() {
    @Override
    public void onItemSelected(AdapterView<?> parentView, View selectedItemView, int position, long id) {
        // your code here
    }

    @Override
    public void onNothingSelected(AdapterView<?> parentView) {
        // your code here
    }

});

This works for me.

Note that onItemSelected method is also invoked when the view is being build, so you can consider putting it inside onCreate() method call.

773
8/9/2012 10:10:23 PM

Spinner spnLocale = (Spinner)findViewById(R.id.spnLocale);

spnLocale.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
    public void onItemSelected(AdapterView<?> adapterView, View view, int i, long l) { 
        // Your code here
    } 

    public void onNothingSelected(AdapterView<?> adapterView) {
        return;
    } 
}); 

Note: Remember one thing.

Spinner OnItemSelectedListener event will execute twice:

  1. Spinner initialization
  2. User selected manually

Try to differentiate those two by using flag variable.


Licensed under: CC-BY-SA with attribution
Not affiliated with: Stack Overflow
Icon