Working With Widgets : Button And EditText.

Create New Project As We Made at Last artical.

in your Graphical Layout go to widget pallete and drag and drop two Edit Text And one Button.

Your XML Code Will Look Like Below.

<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:paddingBottom="@dimen/activity_vertical_margin"

    android:paddingLeft="@dimen/activity_horizontal_margin"

    android:paddingRight="@dimen/activity_horizontal_margin"

    android:paddingTop="@dimen/activity_vertical_margin"

    tools:context=".MainActivity" >

    <EditText

        android:id="@+id/editText2"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_alignLeft="@+id/editText1"

        android:layout_centerVertical="true"

        android:ems="10" />

    <EditText

        android:id="@+id/editText1"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_alignParentLeft="true"

        android:layout_marginTop="32dp"

        android:ems="10" />

    <Button

        android:id="@+id/button1"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_above="@+id/editText2"

        android:layout_alignLeft="@+id/editText2"

        android:layout_marginBottom="38dp"

        android:text="Show Text" />

</RelativeLayout>

You may change ID of widgets. I kept it as it is.

Now Move to your java file.

import the library needed for EditText And Button.


import android.widget.Button;
import android.widget.EditText;


Create instance Of Widgets in your activity.

EditText input , output;
Button show;

in Your On Create Method Add this code

    input= (EditText) findViewById(R.id.editText1);
        output= (EditText) findViewById(R.id.editText1);
        show = (Button) findViewById(R.id.button1);
   

these are Id's of your widgets from your XML file.

Now Set OnClickListener on your show Button using below code.

 show.setOnClickListener(new OnClickListener() {          
            @Override
            public void onClick(View v) {
               
          
                }
          
        });
        

Now we will gettext from input and set it to output when show button is clicked.

 show.setOnClickListener(new OnClickListener() {           
            @Override
            public void onClick(View v) {
   

        String ip=input.getText().toString();
                output.setText(ip);
               
           
                }
           
        });
       


your java file will look like below.

package arshad.widget;

import android.os.Bundle;

import android.app.Activity;

import android.speech.tts.TextToSpeech;

import android.view.Menu;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.Button;

import android.widget.EditText;

import android.widget.Toast;

public class MainActivity extends Activity {

EditText input,output;

Button show;

       @Override

       protected void onCreate(Bundle savedInstanceState) {

              super.onCreate(savedInstanceState);

              setContentView(R.layout.activity_main);

              input= (EditText) findViewById(R.id.editText1);

              output= (EditText) findViewById(R.id.editText2);

           show = (Button) findViewById(R.id.button1);

          

          

          

           show.setOnClickListener(new OnClickListener() {                 

                     @Override

                     public void onClick(View v) {

                           String ip=input.getText().toString();

                           output.setText(ip);

                          

                    

                           }

                    

              });

          

       }

       @Override

       public boolean onCreateOptionsMenu(Menu menu) {

              // Inflate the menu; this adds items to the action bar if it is present.

              getMenuInflater().inflate(R.menu.main, menu);

              return true;

       }

}

Now Run your Application.
type something in Input and Click the show button in output field will shows input text.

this is simple tutorial to learn simple operations using Button and EditText.

All The Best :)