Inside activity_main.xml, we defined a Button element in such a way that when the user clicks on the button, the go method (from the MainActivity class, whose content view is defined in activity_main.xml) executes. When the user clicks on the button, we want to change the text of that button to CHANGED. Write the go method.

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The Answer of Inside activity_main.xml, we defined a Button element in such a way that when the user clicks on the button, the go method (from the MainActivity class, whose content view is defined in activity_main.xml) executes. When the user clicks on the button, we want to change the text of that button to CHANGED. Write the go method.

Inside Activity_main