Beginning Android Development

Beginning

Development
Presenter: Christopher M. Judd
Session Number: 508

Saturday, March 5, 2011

Code PaLOUsa 2011 Sponsors


Christopher M. Judd
President/Consultant of

leader
Columbus Developer User Group (CIDUG)


Remarkable Ohio

Free
Developed for eTech Ohio and Ohio Historical Center

University System Of Ohio

Free
Developed for eTech Ohio and University System Of Ohio

Android Devices


Input

Multi-touch

Virtual Keyboard Speech

Location Aware


Accelerometer/Gyroscope


Camera/Video


Android Development

vs vs


FREE!!!


Designer

Blocks Editor

Designer

Emulator

Blocks Editor Project Manager

Limitations

Can not deploy to

Limited by Component Palette
and Blocks
Hard to work as team
One Screen


Android SDK


OPEN SOURCE!!!


Eclipse
IDE


Eclipse
IDE

Android Development Tool
(ADT)
Eclipse Plug-in


Eclipse Android SDK
IDE
Emulator
Platforms
Samples

Android Development Tool
(ADT)
Eclipse Plug-in


Getting Started
1.Install Java Developer Kit (JDK)
2.Install Eclipse
3.Install SDK
4.Install ADT Eclipse Plug-in
5.Install Android Platform(s)
6.Conﬁgure Android Virtual Device

http://developer.android.com/sdk/installing.html

Name Version Level
Cupcake 1.5 3
Donut 1.6 4
Eclair 2.1 7
Froyo 2.2 8
Gingerbread 2.3 9

Android Platforms

Conﬁgure Android Virtual Devices (AVD)

<sdk>/tools/android

In Eclipse - Windows > Android SDK and AVD Manager

Common Device Configs
http://mobile.tutsplus.com/tutorials/android/common-android-virtual-device-conﬁgurations/

Emulator


VS


Android Development Tools

Java Editor
Debugger
Perspective
Wizards
Proﬁler


Android Architecture


MyWebBrowser Example


1. Create project
2. Layout screen
3. Write code
4. Run application


Create Project


Layout Screen
res/layout/main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>

<LinearLayout
android:orientation="horizontal"
android:layout_height="50px"
>

<EditText
android:id="@+id/url"
android:layout_height="wrap_content"
android:layout_width="wrap_content" />
<Button
android:id="@+id/go"
android:text="@string/go_button_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>

</LinearLayout>

<WebView
android:id="@+id/webview" res/values/strings.xml
android:layout_width="fill_parent" <?xml version="1.0" encoding="utf-8"?>
android:layout_height="fill_parent" <resources>
/> <string name="app_name">MyBrowser</string>
<string name="go_button_text">Go</string>
</LinearLayout> </resources>


Layouts
Linear Relative Table

Grid Tab List

Application Code

src/com/juddsolutions/mybrowser/Main.java

public class Main extends Activity {
private WebView webView;
private EditText url;

public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState); <LinearLayout
setContentView(R.layout.main); android:orientation="horizontal"
url = (EditText)findViewById(R.id.url); android:layout_height="50px"
Button go = (Button)findViewById(R.id.go); >
webView = (WebView)findViewById(R.id.webview);
<EditText
go.setOnClickListener(new OnClickListener() { android:id="@+id/url"
android:layout_height="wrap_content"
android:layout_width="wrap_content" />
public void onClick(View v) { <Button
webView.getSettings().setJavaScriptEnabled(true); android:id="@+id/go"
webView.loadUrl(url.getText().toString()); android:text="@string/go_button_text"
} android:layout_width="wrap_content"
}); android:layout_height="wrap_content"/>
}
} </LinearLayout>

<WebView
android:id="@+id/webview"
android:layout_height="fill_parent"
/>


Run Application

e
t tim
ﬁ rs

In Eclipse - Run > Run
multi
pl e
devic
es


Permissions

AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.juddsolution.mybrowser"
android:versionCode="1"
android:versionName="1.0">
<application android:icon="@drawable/icon" android:label="@string/app_name">
<activity android:name=".Main"
android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>

</application>
<uses-sdk android:minSdkVersion="7" />

<uses-permission android:name="android.permission.INTERNET"></uses-permission>
</manifest>


Deployment Options

Android Package

*.apk


Register
http://market.android.com/publish App Details
$25/year apk File
Screen shots
High Res Icon
Title
1.Develop/Test Application Description
2.Export/Sign Jar Application Type
3.Upload Application Category
Price
Website
Email
Phone
http://developer.android.com/guide/publishing/publishing.html etc...

Analytics
Android Market Place Analytic Companies

Downloads
Active Installs
Errors
Comments Uses
New Users
Device Types
Locations
Events


Resources

http://developer.android.com


Christopher M. Judd

President/Consultant/Author
email: cjudd@juddsolutions.com
web: www.juddsolutions.com
blog: juddsolutions.blogspot.com
twitter: javajudd


Beginning Android Development

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