Android Working with Button

Here, we are going to create two textfields and one button for sum of two numbers. If user clicks one the button, sum of two input values is displayed on the Toast.

Drag the component or write the code for UI in activity_main.xml

First of all, drag 2 textfields from the Text Fields palette and one button from the Form Widgets palette as shown in the following figure.

android button example

The generated code for the ui components will be like this:

File: activity_main.xml

Activity class

Now write the code to display the sum of two numbers.

File: MainActivity.java

It is developed by adt bundle on android 4.2 using minimum sdk 8 and target sdk 16.


android button example output 1 android button example output 2