Read User Input and display it as Toast using Android Studio?

In continuation to our tutorial on Getting started with Android studio, today lets try to create a simple app that will read a password as input and display it as Toast using Android Studio. If you were wondering what is Toast in Android, then here it is: Toast in Android provides simple feedback to the user as a small popup. By default Toast doesn’t consume much space in the app, but fills the amount of space required to display the message and lives for a short duration. For example, you might have noticed “Connected to WiFi Network” toast; which lets you to know that you are connected to a particular network. Today we will see how to create a Toast that will display password entered by the user.

Ok! Let’s start!

Step 1: Create a New project as shown in this tutorial.

Step 2: Click on the “Project” tab located on the left side of the application and drill down to the activity_main.xml located under ‘res>layout’. Note: Name ‘activity_main.xml’ might vary in your project.

Step 3: Copy and paste below code in activity_main.xml

<EditText
 android:id="@+id/txtPassword"
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:inputType="textPassword"
 android:layout_below="@+id/textView" android:layout_centerHorizontal="true" android:layout_marginTop="20dp">
 <requestFocus />
 </EditText>

 <Button
 android:id="@+id/btnSubmit"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:text="@string/btn_submit"
 android:layout_below="@+id/txtPassword" android:layout_alignLeft="@+id/txtPassword"
 android:layout_marginTop="10dp"/>
 <TextView

 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:id="@+id/textView" android:layout_alignParentTop="true"
 android:layout_alignLeft="@+id/txtPassword" android:text="@string/Enterpassword"/>

Step 4: Open strings.xml under ‘res > values‘ and code the below lines

<string name="btn_submit">Submit</string>
<string name="Enterpassword">Enter your password</string>

Step 5: Lets add a reference to visual elements. To do that, go to MainActivity.java and code the below lines in ‘public class MainActivity extends Activity‘ class.

private EditText password;
private Button btnSubmit;

Step 6: Now declare a new method named addListenerOnButton in OnCreate method as shown below

Step 7 : Lets define addListenerOnButton as below,

public void addListenerOnButton() {

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

 btnSubmit.setOnClickListener(new View.OnClickListener() {

 @Override
 public void onClick(View v) {
 Toast toast = new Toast(getApplicationContext());
 toast.setGravity(Gravity.TOP|Gravity.LEFT, 0, 0);
// Toast toast = Toast.makeText(context, text, duration);
 toast.makeText(MainActivity.this, password.getText(), toast.LENGTH_SHORT).show();

 }

 });

 }

Step 8: That’s it! Save the code and build it to see an app like the below one,