Customize user input from AlertDialog box in android

In this article we will discussing about how to create alert dialog box it make accept user input. In this case we customize dialog box like promptdialog. We follow this step

1. Create Project
2. Create promptdialog xml file
3. attach AlertDialog.Builder to AlertDialog  

1. Create new Project  

Open your tool( Eclipse) go to File-->New --> Android Project 

2. Create Android Layout File

Right click on your project select New --> Android XML file  name it to promptdialog.xml

bellow this code 

     main_activity.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@color/background_material_light"
    tools:context="com.example.simpltutorial.MainActivity" >

    <Button
        android:id="@+id/btnprompt"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="134dp"
        android:text="Prompt" />
   
</RelativeLayout>

In layout promptdialog.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >
    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Enter Your Name Here" />
    <EditText
        android:id="@+id/editText1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:ems="10" >
        <requestFocus />
    </EditText>
</LinearLayout>

In MainActivity.java follow this code it will alert box and allow user input and then toast result.

package com.mkyong.android;

import android.app.Activity;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;

public class MainActivity extends Activity {

 final Context context = this;
 private Button button;
 private EditText result;

 public void onCreate(Bundle savedInstanceState) {

  super.onCreate(savedInstanceState);
  setContentView(R.layout.main);

  // components from main.xml
  button = (Button) findViewById(R.id.buttonPrompt);
  result = (EditText) findViewById(R.id.editTextResult);

  // add button listener
  button.setOnClickListener(new OnClickListener() {

   @Override
   public void onClick(View arg0) {

    // get prompts.xml view
    LayoutInflater li = LayoutInflater.from(context);
    View promptsView = li.inflate(R.layout.prompts, null);

    AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(
      context);

    // set prompts.xml to alertdialog builder
    alertDialogBuilder.setView(promptsView);

    final EditText userInput = (EditText) promptsView
      .findViewById(R.id.editTextDialogUserInput);

    // set dialog message
    alertDialogBuilder
     .setCancelable(false)
     .setPositiveButton("OK",
       new DialogInterface.OnClickListener() {
         public void onClick(DialogInterface dialog,int id) {
      // get user input and set it to result
      // edit text
      result.setText(userInput.getText());
         }
       })
     .setNegativeButton("Cancel",
       new DialogInterface.OnClickListener() {
         public void onClick(DialogInterface dialog,int id) {
      dialog.cancel();
         }
       });

    // create alert dialog
    AlertDialog alertDialog = alertDialogBuilder.create();

    // show it
    alertDialog.show();

   }
  });
 }
}