Spinner Callback EventsĪdapterView.onItemSelectedListener interface is used to trigger the Spinner click event callbacks. The adapter sets the data as well as the layout for the items to be loaded in the Spinner. In Android, the Spinner is like your phone which is loaded with data using an Adapter. Then the adapter provides your phone with electricity. For that, you must connect your phone charger to the electricity board using a pin (adapter). Instead, the first item is displayed.ĭata inside a spinner is loaded with an Adapter. Once a value is selected the Spinner returns to its default state with that selected value.Īfter Android 3.0, it’s not possible to display a prompt in a Spinner as the default state in the Spinner. Spinners are like a drop-down menu that contains a list of items to select from.
Preventing the Click Listener from being fired automatically for the first time.Handling Click Listeners and Display a Toast message.Creating a custom layout for the Spinner.Creating Spinners through XML and Programmatically.tOnClickListener(new View.OnClickListener() void onClick(View arg0) ) ĬtOnItemSelectedListener(itemSelectedListener) TextView SpinnerText = (TextView)findViewById(R.id.spinnerText) Spinner spinner = (Spinner) findViewById(R.id.spinner) ĪrrayAdapter adapter = new ArrayAdapter(this,R.layout.layoutspinner,dataArray) I get a null pointer to the TextView after I do the findViewById(). I have tried the answer noted there, but it doesn't seem to work. I found a question asked by someone else on Stack Overflow, Is there a way to use setOnClickListener with an Android Spinner? I'm sure I want to call onClickListener and NOT onItemClickListener. You probably want setOnItemClickListener instead," is "Don't call setOnClickListener for an AdapterView. I'm trying to get an onClickListener to fire on a Spinner, but I get the following error:
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