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Android - Getting started with Android
This document provides an overview of teaching Android application development with Java. It discusses what Android is, why it is engaging for students, and what skills students will learn. It also outlines the requirements for teaching Android, including that students should already know Java, and describes setting up the development environment with Eclipse and the Android SDK. Finally, it walks through creating a simple "Hello World" Android app as a first project, covering generating the project files, layout, code, and running the app in the emulator.
Android - Getting started with Android
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- 3. OverviewOverview What is Android? Whyteach Android? What do you need in order to teach Android? Hello, Android Basic Android graphics Part 2: More Android!
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- 5. What is Android?Whatis Android? An open source Linux-based operating system intended for mobile computing platforms Includes a Java API for developing applications It is not a device or product
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- 8. Engaging Students withAndroidEngaging Students with Android Android has a lot of “buzz” now – Newness – Coolness – Googleness UI and graphics made simple(r) Advanced Java skills
- 9. What Skills WillStudents Learn?What Skills Will Students Learn? Reinforce the basics: OOP, decomposition, etc. Separation of UI design and functionality XML and resource files Events and Listeners Callback methods Threads
- 10. Android vs. iPhoneAndroidvs. iPhone Java vs. Objective-C Direct install vs. Marketplace vs. App Store Open source?
- 11. What do youneed in order to teach Android?
- 12. What Should StudentsAlready Know?What Should Students Already Know? Java! – inheritance, method overriding – interfaces, casting – exceptions – debugging – reading API documentation Eclipse – easy to pick up quickly, though
- 13. Do I NeedPhones?Do I Need Phones? The emulator that is part of the Android toolset for Eclipse is quite good (though a bit slow) You may be able to get free “developer phones” from Google
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- 16. Creating Your First(?)Android AppCreating Your First(?) Android App 1. Set up your development environment 2. Create a new Android project in Eclipse 3. Run it in the emulator 4. Hilarity ensues
- 17. 11. Set UpYour Android Environment. Set Up Your Android Environment http://developer.android.com/sdk Install Eclipse Install Android SDK (Android libraries) Install ADT plugin (Android development tools) Create AVD (Android virtual device) We’ve already done this for you!!
- 18. 2.2. Create anAndroid Project in EclipseCreate an Android Project in Eclipse File → New → Project Select “Android Project” Fill in Project details...
- 19. Name that appears ondevice Directory name Class to automatically create Java package Android version
- 20. 3. Run theAndroid3. Run the Android Run → Run (or click the “Run” button) Select “Android Application” The emulator may take a few minutes to start, so be patient! You don't need to restart the emulator when you have a new version of your application
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- 23. 1 public classHelloAndroid extends Activity { 2 /** Called when the activity is first created. */ 3 @Override 4 public void onCreate(Bundle savedInstanceState) 5 { 6 super.onCreate(savedInstanceState); 7 setContentView(R.layout.main); 8 } 9 } HelloAndroid.javaHelloAndroid.java
- 24. 1 <?xml version="1.0"encoding="utf-8"?> 2 <LinearLayout 3 xmlns:android="http://schemas.android.com/apk/res/android" 4 android:orientation="vertical" 5 android:layout_width="fill_parent" 6 android:layout_height="fill_parent" 7 > 8 <TextView 9 android:layout_width="fill_parent" 10 android:layout_height="wrap_content" 11 android:text="@string/hello " 12 /> 13 </LinearLayout> main.xmlmain.xml
- 25. 1 <?xml version="1.0"encoding="utf-8"?> 2 <resources> 3 <string name="hello">Hello World, HelloAndroid! 4 </string> 5 <string name="app_name">Hello, Android</string> 6 </resources> strings.xmlstrings.xml
- 26. 1 <?xml version="1.0"encoding="utf-8"?> 2 <manifest 3 xmlns:android="http://schemas.android.com/apk/res/android" 4 package="edu.upenn.cis542" 5 android:versionCode="1" 6 android:versionName="1.0"> 7 <application android:icon="@drawable/icon" 8 android:label="@string/app_name"> 9 <activity android:name=".HelloAndroid" 10 android:label="@string/app_name"> 11 <intent-filter> 12 <action 13 android:name="android.intent.action.MAIN" /> 14 <category 15 android:name="android.intent.category.LAUNCHER"/> 16 </intent-filter> 17 </activity> 18 </application> 19 </manifest> AndroidManifest.xmlAndroidManifest.xml
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