Android Roboguice Use Guide (2) First example Hello World

First of all, if you add Guice and Roboguice libraries to your project.

Download Roboguice and Guice-2.0-no_aop.jar (not guice-3.0), or download

Create a new Android project, such as Guicedemo, the target platform Android1.5 above.

In general, you can add a Lib directory under the project, copy two jar files to the Lib directory, and then pass: Project > Properties > Java build Path > Libraries > Add External J ARs

After adding references to the Guice and roboguice libraries, you can start writing the first example that uses Roboguice.

Steps to use Roboguice:

1. Create a roboapplication subclass Guiceapplication,guiceapplication as a subclass of appliacation, so you need to modify the Androidmanifest.xml, Point the name of the application to this class. See Android Simple development tutorial nine: Creating an application framework

<application android:name= "Guiceapplication"

android:icon= "@drawable/icon" android:label= "@string/app_name" >

<activity android:name= ". Guicedemo "

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>

2. In this simple example, it uses the layout definition as follows:

<?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"

>

<textview

Android:id= "@+id/hello"

Android:layout_width= "Fill_parent"

android:layout_height= "Wrap_content"

android:text= "@string/hello"

/>

</linearlayout>

We have defined a textview, and its ID is hello.

Assuming that this application uses a igreetingservice, it has a method getgreeting () returns a string, as for Igreetingservice How to implement, Guidedemo does not need to care.