Android Learning Note "01"

8. Getting Started with a ListView
"1" defines the ListView in the layout
"2" defines the data adapter for the ListView
The GetCount method and GetView method of "3" realizing Baseadapter

ListView displays more data volume out of memory error

1 //ListView Displays more data volume out of memory error2 if(Convertview = =NULL){3 //Create a new View object4TV =NewTextView (mainactivity. This;5}Else{6 //reusing historical cache objects7TV =(TextView) Convertview;8}

9, the ListView display data principle

Javaweb:

Mvc=mode Data View view (JSP) Controler (servlet)

Android:

M:mode data (JavaBean) View:listview C:adapter

10. Optimized efficiency of the ListView

ListView Layout Height If configured as Wrap_content, the system will not stop adapting the check height

ListView Layout Height with match_parent for increased efficiency

Android Learning Note "01"