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Android App Development Tips: Using Emulator for Testing and Editing

Learn how to create a new Android application and optimize development by leaving the emulator running for testing. Toggle between XML and Graphical Layout to modify TextViews and visualize changes instantly. Develop new classes and manage TextView XML code efficiently within your project. Ensure proper matching of IDs in mainActivity.java for functional app elements. Utilize strings.xml for declaring literal strings and associate data values with TextView display using DemoOne methods.

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Android App Development Tips: Using Emulator for Testing and Editing

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  1. Demo 01 StartUpScreen Display

  2. Create a new Android Application

  3. You can leave the emulator running while you edit and test your App Emulator can be left running during application development. You can toggle between activity_main.xml and Graphical Layout to see effect of xml TextView edits without runnning App or switching to emulator.

  4. Creating a new Class in the same package

  5. TextView XML code in activity_main.xml file in res/layout locations of text on startUpScreen defined relative to each other TextView of data values defined here. The id's must match findViewById( ) calls in mainActivity.java Literal strings are declared in res/values/strings.xml

  6. MainActivity.java instance of DemoOne declared setStartUp ScreenText( ) - This is a method to associate data values from DemoOne with TextView display

  7. Astounding Amazing Demo_01 App

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