After completing the previous lesson, you have an android application that shows an activity with a text field and a button. In this lesson, you’ll add some code to MainActivity that show a Toast Message when the user clicks...
Tag - first android app
Create a Layout In Android Studio, from the res/layout directory, open the content_main.xml file. Add the <LinearLayout> element. The result looks like this: <LinearLayout xmlns:android="" xmlns:app="" ...
You should place each type of resources in a specific subdirectory of your project’s res/ directory. For example, here’s the file hierarchy for a simple project: MyProject/ src/ MyActivity.java res/ ...
1. Setup the Development Environment. Step 1 – Setup Java Development Kit (JDK) Download the latest version of JDK from Oracle’s Java site: Java SE Downloads. After you have downloaded and installed the Java...