使用ArrayAdapter过滤器时遇到问题。
我有一个使用数据发布的ListView。在ListView上方有一个EditText字段,其上有一个TextChangeListener。当输入明确出现在ListView中的char序列时,在某些情况下ListView在之后保持为空。 ListView中的元素的格式如下:
FFI 01 Jacket
Test, User
Locker 101
----------------
FFI 01 Helmet
Test, User
Locker 101
----------------
FFI 02 Jacket
Test, User2
Locker 102
----------------
.
.
.
等等。
这是我的代码:
TextChangeListener:
eText.addTextChangedListener(new TextWatcher() {
@Override
public void onTextChanged(CharSequence cs, int arg1, int arg2, int arg3) {
// When user changed the Text
if (!cs.equals(null) || !cs.equals("") || !cs.equals(" ")) {
MainActivity.this.adapter.getFilter().filter(cs);
}
}
@Override
public void beforeTextChanged(CharSequence arg0, int arg1, int arg2, int arg3) { }
@Override
public void afterTextChanged(Editable arg0) {}
});
填充适配器和ListView:
File file = new File(Environment.getExternalStorageDirectory().getPath() + "/" + "AUSRUEST.DBF");
DbfIterator dbfIterator = DbfEngine.getReader(file, null);
DbfHeader dbfHeader = DbfEngine.getHeader(file, null);
int numCols = dbfHeader.getCountColumns();
int numRows = dbfHeader.getCountRecords();
arrayListView = new String[numRows][numCols];
int i=0;
Set<String> set = new HashSet<String>();
while (dbfIterator.hasMoreRecords()) {
DbfRecord dbfRecord = dbfIterator.nextRecord();
if (dbfRecord.getString("FW_NR") != null && !dbfRecord.getString("FW_NR").startsWith("?")) {
String setText = dbfRecord.getString("FW_NR")+"\n"+dbfRecord.getString("STANDORT1")+"\n"+dbfRecord.getString("ABLAGE")+"\n";
setText = setText.replace("null", "---");
set.add(setText);
}
arrayListView[i][0] = dbfRecord.getString("GRUPPE2");
arrayListView[i][1] = dbfRecord.getString("FW_NR");
arrayListView[i][2] = dbfRecord.getString("STANDORT1");
arrayListView[i][3] = dbfRecord.getString("ABLAGE");
//Date date = dbfRecord.getDate("date_val");
String test = arrayListView[i][0];
String test1 = arrayListView[i][1];
String test2 = arrayListView[i][2];
String test3 = arrayListView[i][3];
System.out.println(arrayListView[i][0] + " " + arrayListView[i][1] + " " + arrayListView[i][2] + " "+ arrayListView[i][3]);
i++;
}
List<String> al = new ArrayList<String>(set);
Collections.sort(al);
System.out.println(" ");
ListView lv = (ListView) findViewById(R.id.listView);
adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, al);
lv.setAdapter(adapter);
答案 0 :(得分:0)
替换此代码段:
"\n" dbfRecord.getString("FW_NR")+"\n"+dbfRecord.getString("STANDORT1")+"\n"+dbfRecord.getString("ABLAGE")+"\n"
带
"\n "
然后尝试。
Nigam Patro的回答
答案 1 :(得分:0)
另一种解决方法可能是...
public class SomeAdapter extends BaseAdapter implements Filterable {}
,然后在类Filterable
中实现接口SomeAdapter
的方法。
以上代码通常缺乏职责分离。