Adapter是链接后端数据和前端UI的重要适配器接口,充当了UI和数据之间的一个纽带。Data、View和Adapter关系如下:
MainActivity.java源码:
public class MainActivity extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); //Step1 String[] contentArray = new String[]{"内容1","内容2","内容3","内容4","内容5"}; ListView lv = (ListView)findViewById(R.id.lv); //Step2 ArrayList<HashMap<String,Object>> lists = new ArrayList<HashMap<String,Object>>(); for(int i=0; i<contentArray.length; i++){ HashMap<String,Object> map = new HashMap<String,Object>(); map.put("startTimeText", "22:00"); map.put("endTimeText", "23:00"); map.put("separator", R.drawable.separator); map.put("content", contentArray[i]); lists.add(map); } //Step3 SimpleAdapter adapter = new SimpleAdapter( this, lists, R.layout.list_item, new String[]{"startTimeText","endTimeText","separator","content"}, new int[] {R.id.startTimeText,R.id.endTimeText,R.id.separator,R.id.content}); //Step4 lv.setAdapter(adapter); } }
(1)MainActivity主界面的布局源码activity_main.xml:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" > <ListView android:id="@+id/lv" android:layout_width="match_parent" android:layout_height="wrap_content"/> </LinearLayout>(2)ListView列表单元的布局源码list_item.xml:
<?xml version="1.0" encoding="utf-8" ?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_height="match_parent<span style="font-family: Arial, Helvetica, sans-serif;">" </span> android:gravity="center_vertical" android:layout_width="match_parent" android:orientation="horizontal"> <LinearLayout android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="2" android:gravity="center_vertical" android:orientation="vertical"> <TextView android:id="@+id/startTimeText" android:layout_height="wrap_content" android:layout_width="match_parent" /> <TextView android:id="@+id/endTimeText" android:layout_height="wrap_content" android:layout_width="match_parent" /> </LinearLayout> <ImageView android:id="@+id/separator" android:layout_weight="1" android:layout_width="0dp" android:layout_height="wrap_content" /> <TextView android:id="@+id/content" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="12"/> </LinearLayout>
res/drawable-mdpi/下的文件:
separator.png
(1)http://blog.csdn.net/fznpcy/article/details/8658155/