Dialog is a window that floats over other windows. In this Android tip, I am going to show you how to create an EditText dialog that allows user to input text to an EditText on the main activity.
There are different ways to create an EditText dialog. The way that i am talking here is using the Dialog class. The Dialog class can accept a custom view or layout. In the custom view, you place widgets that need to be displayed on the dialog. In case of EditText dialog, you should have a TextView, an EditText, and Button. The TextView displays message to the user. The EditText allows data input. Android the Button is clicked to pass the input data to a TextView on the main activity and close the dialog.
Now in the res/layout directory, you create dialogview.xml file as shown below. It is the custom view of the dialog.

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android=  "http://schemas.android.com/apk/res/android"
   android:orientation="vertical"
   android:padding="10dp"
   android:layout_width="match_parent"
   android:layout_height="wrap_content">
   <TextView
      android:id="@+id/txtmessage"
      android:layout_width="match_parent"
      android:layout_height="wrap_content"
      android:padding="10dp"
      android:layout_margin="10dp"
      android:textSize="16sp"
      />
   <RelativeLayout
      android:layout_width="match_parent"
      android:layout_height="wrap_content"
      android:layout_gravity="center_horizontal"

      >
      <EditText
        android:id="@+id/txtinput"
        android:layout_width="200dp"
        android:layout_height="wrap_content"

        />
      <Button
        android:id="@+id/btdone"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Done"
        android:layout_toRightOf="@id/txtinput"
        android:layout_alignParentRight="true"        />


   </RelativeLayout>

</LinearLayout>

<LinearLayout 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:orientation="horizontal"
   android:padding="10dp"
   tools:context=".MainActivity"

  >
   <EditText
   android:id="@+id/txt"
   android:layout_width="match_parent"
   android:layout_height="wrap_content">

   </EditText>
</LinearLayout>

import android.app.Dialog;
import android.content.Context;
import android.graphics.Color;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;


public class MainActivity extends ActionBarActivity {
   @Override
   protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_main);
      EditText txt=(EditText)findViewById(R.id.txt);
      showEditTextDialog(this,"Please input phone number",txt);
   }
   public void showEditTextDialog(final Context context, String message, final EditText txt) {
     // Create dialog instance
      final Dialog dialog = new Dialog(context);
      // Set dialog title
      dialog.setTitle("Input box");
      // Set dialog layout that contains radio buttons
      dialog.setContentView(R.layout.dialogview);
      // Dialog message
      TextView tvMess = (TextView) dialog.findViewById(R.id.txtmessage);
      tvMess.setText(message);      
      tvMess.setTextColor(Color.parseColor("#ff2222"));
      //Done button
      Button btDone = (Button) dialog.findViewById(R.id.btdone);
      // EditText to allow user input
      final EditText txtInput = (EditText) dialog.findViewById(R.id.txtinput);
      txtInput.setText(txt.getText().toString());
      // Change the EditText input type to that of the EditText of the activity that receives the input text
      txtInput.setInputType(txt.getInputType());
      btDone.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View view) {
           // pass the text to the EditText of the activity
           txt.setText(txtInput.getText().toString());
           // close the dialog
           dialog.dismiss();
        }
      });
      // show dialog
      dialog.show();


   }


} 

Posted by: Dara | post date: 05-09-2015 | Subject: Android Apps Development