300 lines
4.4 KiB
Plaintext
300 lines
4.4 KiB
Plaintext
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Application
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Programming
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Hend Alkittawi
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Android Development
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Introduction to Android Studio and
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Android Apps Anatomy
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GRAPHICAL USER INTERFACES (GUIs)
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-
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Console app vs. Mobile app!
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>> Enter employee name: Ryan
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>> Enter employee title: Product
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Manager
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>> Enter hire date: 06-03-2018
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Employee Management
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Employee Name
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Employee Title
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⏬
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Employee Hire Date 📅
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Submit
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ANDROID STUDIO
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-
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Android Studio is an integrated development environment (IDE)
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for building Android apps
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-
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Download and install Android Studio here
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-
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Installing Android Studio includes
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-
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Android SDK (Software Development Kit)
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-
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Android SDK tools and platform tools (for debugging & testing)
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-
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A system image for the Android emulator
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-
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JDK
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HELLO, ANDROID STUDIO!
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-
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In Android Studio, create a new project
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-
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Select “Phone and Tablet” template → next
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Select “Empty Views Activity” (different from “No Activity”) →
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next
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-
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-
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Package name: edu.utsa.cs3443.projectName → next
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-
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Language: Java → next
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-
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Minimum SDK: Android 8 (Oreo)
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-
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Finish → Finish
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Android Studio may need to install several things if this is
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your first project - be patient and do not close the IDE until
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it is finished!
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1
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2
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3
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4
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Project tool window
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Editor tool window
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HELLO, ANDROID STUDIO!
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-
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Layout Editor
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drag and drop views in the Design mode
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-
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view the xml code by clicking the Code button in the top left
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HELLO, ANDROID STUDIO!
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-
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Resource: a piece of your app that is
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not code (e.g. image files, audio, XML)
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Layout: Defines a set of UI objects and
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the objects’ positions on the screen
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View: UI objects (View is a superclass
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of all UI components)
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Inflate: parse an XML layout resource
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and convert it to a hierarchy of View
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objects
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HELLO, ANDROID STUDIO!
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-
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Activity: a class in the Android SDK which represents an entry point to into your
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app and is responsible for managing user interactions with a screen of information
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Name your Activity class:
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SomeNameActivity.java
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Name your layout file:
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activity_some_name.xml
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In this example:
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MainActivity.java
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and
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activity_main.xml
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HELLO, ANDROID STUDIO!
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-
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MainActivity.java (default template)
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onCreate() is called when an instance of the activity subclass is
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created
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-
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setContentView() assigns this activity the UI it manages; it
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inflates the layout & puts it on the screen, instantiating all views in
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the layout file as defined by their attributes
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package edu.utsa.cs3443.hello_world;
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import androidx.appcompat.app.AppCompatActivity;
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import android.os.Bundle;
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public class MainActivity extends AppCompatActivity {
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@Override
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protected void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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setContentView(R.layout.activity_main);
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}
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}
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ANDROID SDK
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Immediately after installing Android Studio for the first time it
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is likely that only the latest released version of the Android SDK
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has been installed.
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-
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To install older versions of the Android SDK simply select the
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checkboxes corresponding to the versions and click on the Apply
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button.
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This task can be performed by clicking on the More Actions link
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within the welcome dialog or by clicking the Preferences menu
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option, then selecting the SDK Manager option from the drop-down
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menu,
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select Android Oreo (8.0)
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CREATING A VIRTUAL DEVICE
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An Android application may be tested by installing and running
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it either on a physical device or in an Android Virtual Device
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(AVD) emulator environment.
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As part of the standard Android Studio installation, several
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emulator templates are installed allowing AVDs to be
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configured for a range of different devices.
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New AVDs are created and managed using the Android Virtual
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Device Manager.
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Tools > Device Manager (or the
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icon)
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ANDROID DEVELOPMENT RESOURCES
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●
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Our Textbook Forum
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○
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●
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Documentation
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○
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●
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●
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https://developer.android.com/
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Newsgroups And Forums
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○
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https://stackoverflow.com/questions/tagged/android
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○
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https://androidforums.com/
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Development Tips
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○
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●
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https://forums.bignerdranch.com/
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https://android-developers.googleblog.com/
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Videos And Tutorials
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○
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https://www.youtube.com/user/androiddevelopers
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CODE DEMO
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-
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Create a HelloWorld
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Android Application
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using Android Studio
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and walk through the
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project content!
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IMPORTANT
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Run the HelloWorld
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Android App on your
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machine and/or VDI
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before the end of
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the week!
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DO YOU HAVE ANY
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QUESTIONS?
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THANK
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YOU!
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@
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hend.alkittawi@utsa.edu
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By Appointment
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Online
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