Android Studio Hello World StartAll ProgramAndroid Studio I

Android Studio Hello World

Start/All Program/Android Studio

I do not have a previous version … OK

Click update (wait a long time)

Update and restart

Next

Next (again)

Finish

Finish (again)

Start a new Android Studio project

Name the application and click Next

Select a minimum SDK. Next.

Next

Choose an empty activity. Next

Finish

Close tip of the day

Click the Run App button (green arrow)

Click on create New Virtual Device

Next

Select a system image

Agree to license. Next.

Finish

Select image. Next.

Finish

OK

Install and continue

Finish

After closing the emulator and running again

Go to activity_main. xml (see res/layout)

Right click on “Hello world” Text. View and select Cut.

Click ON the Auto Connect (U) button

Drag a button from the palette to the layout

Change the button’s id and text

Drag a Text. View onto the Layout

Change the Text. View’s id and text

Return to Main. Activity – begin to instantiate a button object

Put mouse over Button (which was red) and click Alt-Enter. Adds the import android. widget. Button

Start adding the button’s set. On. Click. Listener method

Add required on. Click method

Instantiate Text. View object and use its set. Text method

Run • Problem you may find: the Text. View and Button may be on top of one another. • Return to layout and move things around (hoping to alleviate this problem)

Change to Text view of Layout. Notice the Text. View is underlined squiggly red. It is not constrained.

Code to constraint Text. View