Alert Dialog List

This code snippet shows an alert dialog that displays a list of choices.

The code is similar to what's used for the alert dialog that displays buttons (e.g. OK, Cancel).

This type of dialog takes the list item labels from a string array you need to create under res -> value.

String Array Example

<?xml version="1.0" encoding="utf-8"?>

<resources>

<string-array name="Foods">

<item>Pizza</item>

<item>Cookies</item>

<item>Doughnuts</item>

<item>Soda</item>

<item>Lollipops</item>

<item>Ice Cream</item>

</string-array>

</resources>

Code Example

import android.app.Activity;

import android.app.AlertDialog;

import android.content.DialogInterface;

import android.os.Bundle;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.Button;

import android.widget.TextView;

import android.widget.Toast;

public class AlertList extends Activity implements OnClickListener {

Button btn_Alert;

TextView tv_alert;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_alert_list);

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

btn_Alert.setOnClickListener(this);

tv_alert = (TextView) findViewById(R.id.tv_Alert);

}

@Override

public void onClick(View v) {

AlertDialog.Builder alert = new AlertDialog.Builder(AlertList.this);

alert.setTitle("Select a food");

alert.setItems(R.array.Foods, new DialogInterface.OnClickListener() {

public void onClick(DialogInterface dialog, int which) {

switch (which){

case 0:

Toast.makeText(AlertList.this, "You selected Pizza", Toast.LENGTH_SHORT).show();

break;

case 1:

Toast.makeText(AlertList.this, "You selected Cookies", Toast.LENGTH_SHORT).show();

break;

case 2:

Toast.makeText(AlertList.this, "You selected Doughnuts", Toast.LENGTH_SHORT).show();

break;

case 3:

Toast.makeText(AlertList.this, "You selected Soda", Toast.LENGTH_SHORT).show();

break;

case 4:

Toast.makeText(AlertList.this, "You selected Lollipops", Toast.LENGTH_SHORT).show();

break;

case 5:

Toast.makeText(AlertList.this, "You selected Ice Cream", Toast.LENGTH_SHORT).show();

break;

}

}

});

alert.show();

};

}