Java tutorial
//package com.java2s; import android.app.AlertDialog; import android.content.Context; import android.content.DialogInterface; import android.content.Intent; public class Main { public static void alertTurnOnGPS(final Context mContext) { final AlertDialog.Builder builder = new AlertDialog.Builder(mContext); builder.setMessage("Do you want to enable GPS?").setCancelable(false) .setPositiveButton("Yes", new DialogInterface.OnClickListener() { public void onClick(final DialogInterface dialog, final int id) { mContext.startActivity( new Intent(android.provider.Settings.ACTION_LOCATION_SOURCE_SETTINGS)); } }).setNegativeButton("No", new DialogInterface.OnClickListener() { public void onClick(final DialogInterface dialog, final int id) { dialog.cancel(); } }); final AlertDialog alert = builder.create(); alert.show(); } }