Android : Check Empty EditText

In This Tutorial We Will See How To Check Whether Edittext Is Empty Or Not.
Create New Android Application Project And name It as EditTextEmpty.
Now Go To Your Xml Layout activity_main.xml file.
In Your Graphical Layout Add One EditText, You may Add Plain Text to check Empty Text.
Now Add One Button To Check Edittext Is Empty Or Not On its Click Event.

Your activity_main.xml will Now 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/editText1"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_marginTop="22dp"

        android:ems="10" >

        <requestFocus />

    </EditText>

    <Button

        android:id="@+id/button1"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_alignLeft="@+id/editText1"

        android:layout_below="@+id/editText1"

        android:layout_marginTop="48dp"

        android:text="Check" />

</RelativeLayout>

Your EditText's ID Is editText1.
So We Can Check EditText is Empty Or Not With Following Code.

(input.getText().toString().equals(""))

We have Given Two Condition Empty And Not Empty Using If Else Condition And The Message Is Shown Using Toast.
MainActivity.java file is As Below . Replace With Your MainActivity.java file.

MainActivity.Java

package arshad.edittextempty;

import java.io.File;

import java.io.FileOutputStream;

import java.io.OutputStreamWriter;

import android.os.Bundle;

import android.app.Activity;

import android.graphics.Color;

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;

       Button check;

       @Override

       protected void onCreate(Bundle savedInstanceState) {

              super.onCreate(savedInstanceState);

              setContentView(R.layout.activity_main);

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

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

             

             

             

              check.setOnClickListener(new OnClickListener() {

                     @Override

                     public void onClick(View arg0) {

                            

                     if(input.getText().toString().equals(""))

                     {

                            Toast.makeText(MainActivity.this, "Input Text Is Empty.. Please Enter Some Text", Toast.LENGTH_SHORT).show();

                     }

                     else

                     {

                          

                            Toast.makeText(MainActivity.this, "Input Text is Not Empty", Toast.LENGTH_SHORT).show();

                     }

                     }

              });

                          

       }

       @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 Check Your EditText Whether Empty or Not.

My Screenshot's Are As Below...

All The Best :)