Introduction to Android Development (14) Display Images 14.1 Gallery and ImageView

Gallery can display a series of pictures, and can slide horizontally. The following shows how to use Gallery to display a series of pictures.

1. Create a project, Gallery.

2. Code in the Main.xml.

<?xml version= "1.0" encoding= "Utf-8"?> <linearlayout xmlns:android=    
"http://schemas.android.com/apk/" Res/android "     
    android:layout_width=" fill_parent " 
    android:layout_height=" fill_parent " 
    android:o" rientation= "vertical" >    
       
    <textview 
        android:layout_width= "Fill_parent" 
        Wrap_content " 
        android:text=" Images of San Francisco "/> <gallery android:id=" 
        @+id/gallery1 " 
        android:layout_width= "fill_parent" 
        android:layout_height= "wrap_content"/>    
       
    <imageview 
        android:id= "@+id/image1" 
        android:layout_width= "320DP" 
        android:layout_height= "250DP" 
        Android:scaletype= "Fitxy"/>    
       
</LinearLayout>

3. Create a new file under the Res/values folder, Attrs.xml.

4. Code in the Attrs.xml.

<?xml version= "1.0" encoding= "Utf-8"?>    
<resources>    
    <declare-styleable name= "Gallery1" >    
        <attr name= "Android:galleryitembackground"/>    
    </declare-styleable>    
</resources>

5. Prepare some pictures. Put these pictures underneath the res/drawable-mdpi.