Question

I have a button in android which on clicking produces an alert box. But i don’t know how to capture the selected value from the alert box. My code is

btn=(Button)findViewById(R.id.btn);

String[] items = new String[] {"name", "doc", "age"};
final ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
            android.R.layout.simple_spinner_dropdown_item, items);

btn.setText("Select One");

 btn.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            new AlertDialog.Builder(context)
              .setTitle("Select Airport")
              .setAdapter(adapter, new DialogInterface.OnClickListener() {

                @Override
                public void onClick(DialogInterface dialog, int which) {



                  dialog.dismiss();
                }
              }).create().show();

        }

    });

Please help. Thanks in advance!

Answer 1

In your code

int which

argument of onClick event of AlertDialog returns the number of position of the item that is selected.

For checking you just Toast a message when you select any item from AlertDialog

Code :

btn.setOnClickListener(new View.OnClickListener() {

    @Override
    public void onClick(View v) {
        new AlertDialog.Builder(context)
          .setTitle("Select Airport")
          .setAdapter(adapter, new DialogInterface.OnClickListener() {

            @Override
            public void onClick(DialogInterface dialog, int which) {

              Toast.makeText(YourActivity.this,"You Selected : "+items[which],Toast.LENGTH_SHORT).show();

              dialog.dismiss();
            }
          }).create().show();

    }

});

You can refer Android’s Official Guide On Dialogs for more information about Dialogs in Android