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【Android Development for Beginners】 Lesson 2A : Add TextViews for Price

This Notes is according to the udacity free course :

Android Development for Beginners

Lesson 2A : Add TextViews for Price
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Next Step is to check your app can change "price" on your screen.

First : Add Price and @+id/quantity_text_view to your layout.


Second : copy those code into the MainActivity.java.
paste them here under your left braces

*Under the display method( Like the pic below)

Third: You may notice the NumberFormat was colored in red. Also, displayPrice was colored in gray.

  • NumberFormat : We have to set up "Auto import" so that android studio can recognize them.
    • For Windows, go to File > Settings > Editor > General > Auto Import
    • For Mac, go to Menu Bar > Android Studio > Preferences > Editor > General > Auto Import
  • displayPrice : add displayPrice in the submitOrder.


H.W.


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