Android Text Fields 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.bishnu.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();

  }

 });

  }

}