我使用适配器创建了一个listview。 listview包含表中特定字段的不同值。现在,当单击listview项时,它应该检索具有该特定数据的id的所有项。我设法从列表视图中获取数据,但是当项目未正确获取时。
row.xml
<ImageView
android:id="@+id/img"
android:src="@mipmap/ic_message"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
<TextView
android:id="@+id/txtid"
android:layout_marginTop="10dp"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="sd"
/>
Tab2.java
ListView list;
final ArrayList<HashMap<String, String>> mylist;
ListAdapter adapter;
HashMap<String, String> map2;
final TextView a1;
list = (ListView) v.findViewById(R.id.listView2);
a1 = (TextView) v.findViewById(R.id.txt1);
mylist = new ArrayList<HashMap<String, String>>();
DatabaseHandler db = new DatabaseHandler(getActivity());
final List<Product> sent = db.getSentProducts();
for (Product s : sent) {
map2 = new HashMap<String, String>();
map2.put("txtid", s.getMsg_id());
mylist.add(map2);
Log.d("msgid", s.getMsg_id());
}
for (Product s : sent) {
}
try {
adapter = new SimpleAdapter(getActivity(),mylist,R.layout.sent_row, new String[]{"txtid"}, new int[]{R.id.txtid});
list.setAdapter(adapter);
} catch (Exception e) {
}
list.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {
@Override
public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) {
TextView a = (TextView)v.findViewById(R.id.txtid);
String content1 = a.getText().toString();
DatabaseHandler db = new DatabaseHandler(getActivity());
List<Product> sentinfo = db.getSentProductInfo(content1);
for (Product si : sentinfo){
Log.d("asdsd", si.getStorCode()+" "+si.getCode()+" "+si.getBstock()+" "+si.getDeliveries()+" "+si.getSpoilage()+" "+ si.getEstock()+" ");
}
return true;
}
});
return v;
}
分贝
android ui
当我在listview中单击20150824070159时,它应该在表中获取两行,但是,它只获取一行,而它是另一个id的数据,20150820162104。
我将如何回答这个问题?
答案 0 :(得分:1)
要从列表视图中单击项目获取文本,您应该这样做:
list.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {
@Override
public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) {
String clickedText = list.getItemAtPosition(position).toString();
}
});
请确保在任何方法之外的全局范围内声明list
变量,因为在onCreate或任何其他方法已经结束后将调用此函数。