Java 如何获取listview控件的索引或位置
大家好,我是android编程新手。我想创建一个益智游戏,在这个游戏中,用户将通过在屏幕上拖动html未排序的标签来排序。我使用listview控件来存储未排序的html标记。我已经实现了以下库: 现在,我尝试在用户删除列表项后获取列表项的位置或索引,以便将用户排序的列表项与实际排序的项进行比较 这是我的Main.java代码Java 如何获取listview控件的索引或位置,java,android,listview,drag-and-drop,draggable,Java,Android,Listview,Drag And Drop,Draggable,大家好,我是android编程新手。我想创建一个益智游戏,在这个游戏中,用户将通过在屏幕上拖动html未排序的标签来排序。我使用listview控件来存储未排序的html标记。我已经实现了以下库: 现在,我尝试在用户删除列表项后获取列表项的位置或索引,以便将用户排序的列表项与实际排序的项进行比较 这是我的Main.java代码 PuzzleManager pm = new PuzzleManager(this); pm.insertPuzzle("<html>,</h1>
PuzzleManager pm = new PuzzleManager(this);
pm.insertPuzzle("<html>,</h1>,<h1>,</html>,<body>,</body>", "<html>,<body>,<h1>,</h1>,</body>,</html>");
Cursor cursor = pm.getPuzzle(1);
pm.close();
String s = cursor.getString(1);
List<String> puzzleList = Arrays.asList(s.split(","));
ArrayList<Map<String, Object>> items = new ArrayList<Map<String, Object>>();
for(int i = 0; i < puzzleList.size(); ++i) {
HashMap<String, Object> item = new HashMap<String, Object>();
item.put("puzzle", puzzleList.get(i));
items.add(item);
}
DragNDropListView list = (DragNDropListView)findViewById(android.R.id.list);
DragNDropSimpleAdapter adaptor = new DragNDropSimpleAdapter(this,
items,
R.layout.row,
new String[]{"puzzle"},
new int[]{R.id.text},
R.id.handler);
list.setDragNDropAdapter(adaptor);
puzzmanager pm=新的puzzmanager(此);
插入拼图(,,,,,,,,,,);
游标=pm.getPuzzle(1);
pm.close();
字符串s=cursor.getString(1);
List-puzzlist=Arrays.asList(s.split(“,”);
ArrayList items=新建ArrayList();
对于(int i=0;i
Main.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<com.terlici.dragndroplist.DragNDropListView
android:id="@id/android:list"
android:layout_width="match_parent"
android:layout_height="match_parent"
/>
</LinearLayout>
row.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="80px"
android:orientation="horizontal"
android:gravity="center_vertical"
>
<ImageView
android:id="@+id/handler"
android:layout_width="60px"
android:layout_height="60px"
android:src="@android:drawable/btn_star_big_on"
android:layout_marginLeft="8px"
/>
<TextView
android:id="@+id/text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Large Text"
android:textAppearance="?android:attr/textAppearanceLarge" />
</LinearLayout>
提前感谢“DragNDropListView为拖放提供了事件侦听器”:list.setOnItemDragNDropListener(…)。使用它获取已删除项的索引(id)
list.setOnItemDragNDropListener(new DragNDropListener(){
public void onItemDrop(DragNDropListView parent, View view, int startPosition, int endPosition, long id)
{
super.onItemDrop(parent, view, startPosition, endPosition, id);
Log.i("long clicked","pos"+" "+endPosition+" id "+id);
}
});