Android password field example

In Android, you can use “android.widget.EditText“, with inputType="textPassword" to render a password component.

In this tutorial, we show you how to use XML to create a password field, label field and a normal button. When you click on the button, the password value will be displayed as a floating message (toast message).

P.S This project is developed in Eclipse 3.7, and tested with Android 2.3.3.

1. Custom String

Open “res/values/strings.xml” file, add some custom string for demonstration.

File : res/values/strings.xml


<?xml version="1.0" encoding="utf-8"?>
<resources>
    <string name="app_name">MyAndroidApp</string>
    <string name="lblPassword">Enter Your Password :</string>
    <string name="btn_submit">Submit</string>
</resources>

2. Password

Open “res/layout/main.xml” file, add a password component, EditText + inputType="textPassword".

File : res/layout/main.xml


<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <TextView
        android:id="@+id/lblPassword"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/lblPassword"
        android:textAppearance="?android:attr/textAppearanceLarge" />

    <EditText
        android:id="@+id/txtPassword"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:inputType="textPassword" >

        <requestFocus />
    </EditText>

    <Button
        android:id="@+id/btnSubmit"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/btn_submit" />

</LinearLayout>

3. Code Code

Inside activity “onCreate()” method, attach a click listener on button, to display the password value.

File : MyAndroidAppActivity.java


package com.mkyong.android;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class MyAndroidAppActivity extends Activity {

  private EditText password;
  private Button btnSubmit;

  @Override
  public void onCreate(Bundle savedInstanceState) {
	super.onCreate(savedInstanceState);
	setContentView(R.layout.main);

	addListenerOnButton();

  }

  public void addListenerOnButton() {

	password = (EditText) findViewById(R.id.txtPassword);	
	btnSubmit = (Button) findViewById(R.id.btnSubmit);

	btnSubmit.setOnClickListener(new OnClickListener() {

		@Override
		public void onClick(View v) {

		  Toast.makeText(MyAndroidAppActivity.this, password.getText(),
			Toast.LENGTH_SHORT).show();

		}

	});

  }
}

4. Demo

Run the application.

1. Result, password field is displayed.

android password demo1

2. Type password “mkyong123” and click on the submit button.

android password demo2

Download Source Code

Download it – Android-Password-Example.zip (15 KB)

References

  1. Android EditText JavaDoc

About the Author

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mkyong
Founder of Mkyong.com, love Java and open source stuff. Follow him on Twitter. If you like my tutorials, consider make a donation to these charities.

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Emmanuel BasseyOm DavepraveenIMPORTANT?????? ??????????? Recent comment authors
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Om Dave
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Om Dave

Kindly Include “import yourpackagename.R;”
in source Java File

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?????? ???????????
Guest
?????? ???????????

input type = text password does not let to change language, how to make it to let choice? sorry for my english

IMPORTANT
Guest
IMPORTANT

how to execute it there is no exe file

praveen
Guest
praveen

in this example I want to display password in next activity page. how to do that please somebody help me out.

Emmanuel Bassey
Guest
Emmanuel Bassey

This is awesome

Sandeep Reddy
Guest
Sandeep Reddy

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