Android Button Example

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  • Android Button Example represents a push-button. The android.widget.Button is subclass of TextView class and CompoundButton is the subclass of Button class.
  • There are different types of buttons in android such as RadioButton, ToggleButton, CompoundButton etc.
  • Here, we are going to create two textfields and one button for sum of two numbers. If user clicks button, sum of two input values is displayed on the Toast.

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 1

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.

Output:

Android Button Example 2

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