我已经将三个值存储到数据库中，我想在点击按钮时进行搜索，点击搜索按钮后，它将在搜索屏幕上移动，并且只显示搜索框。
DatabaseHelper.java
public class DatabaseHelper extends SQLiteOpenHelper {
public static String DATABASENAME = "Aadhaar";
public static String PRODUCTTABLE = "Enrolled";
private ArrayList<CandidateModel> cartList = new ArrayList<CandidateModel>();
Context c;
public DatabaseHelper(Context context) {
super(context, DATABASENAME, null, 33);
c = context;
}
@Override
public void onCreate(SQLiteDatabase db) {
db.execSQL("CREATE TABLE if not exists Enrolled(id INTEGER PRIMARY KEY AUTOINCREMENT,"
+ "_id"
+ " TEXT ,"
+ "FirstName"
+ " TEXT,"
+ "LastName"
+ " TEXT)");
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
db.execSQL("DROP TABLE IF EXISTS" + PRODUCTTABLE);
onCreate(db);
}
public void addProduct(CandidateModel productitem) {
SQLiteDatabase db = this.getWritableDatabase();
ContentValues contentValues = new ContentValues();
contentValues.put("_id", productitem.idno);
contentValues.put("FirstName", productitem.productname);
contentValues.put("LastName", productitem.productprice);
db.insert("Enrolled", null, contentValues);
db.close();
}
// update
public void updateProduct(CandidateModel productList) {
SQLiteDatabase db = this.getWritableDatabase();
ContentValues contentValues = new ContentValues();
contentValues.put("FirstName", productList.productname);
contentValues.put("LastName", productList.productprice);
db.update("Enrolled", contentValues, "_id=" + productList.idno, null);
db.close();
}
public void emptyProduct() {
try {
SQLiteDatabase db = this.getWritableDatabase();
db.execSQL("delete from Enrolled");
db.close();
} catch (Exception e) {
e.printStackTrace();
}
}
public void removeProduct(String productid, String pname, String pprice) {
try {
// SQLiteDatabase db = this.getWritableDatabase();
// db.execSQL("delete from producttable where productidno="
// + productid);
// db.close();
String[] args = { productid };
getWritableDatabase().delete("Enrolled", "_id=?", args);
} catch (Exception e) {
e.printStackTrace();
}
}
public ArrayList<CandidateModel> getProudcts() {
cartList.clear();
SQLiteDatabase db = this.getWritableDatabase();
Cursor cursor = db.rawQuery("select * from Enrolled", null);
if (cursor.getCount() != 0) {
if (cursor.moveToFirst()) {
do {
CandidateModel item = new CandidateModel();
item.idno = cursor.getString(cursor.getColumnIndex("_id"));
item.productname = cursor.getString(cursor
.getColumnIndex("FirstName"));
item.productprice = cursor.getString(cursor
.getColumnIndex("LastName"));
cartList.add(item);
} while (cursor.moveToNext());
}
}
cursor.close();
db.close();
return cartList;
}
}
Aadhar.java
public class Aadhar extends Activity implements OnClickListener {
private Button btn_add, btn_view, btn_search;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
btn_add = (Button) findViewById(R.id.btn_add);
btn_view = (Button) findViewById(R.id.btn_view);
btn_search = (Button) findViewById(R.id.btn_search);
btn_add.setOnClickListener(this);
btn_view.setOnClickListener(this);
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.btn_add:
Intent addintent = new Intent(Aadhar.this, AddRecord.class);
startActivity(addintent);
break;
case R.id.btn_view:
Intent viewintent = new Intent(Aadhar.this, ViewRecord.class);
startActivity(viewintent);
break;
case R.id.btn_search:
Intent searchIntent = new Intent (Aadhar.this, SearchRecord.class);
startActivity(searchIntent);
default:
break;
}
}
}
SearchRecord.java
public class SearchRecord extends Activity implements OnClickListener {
String TAG = "SearchRecord";
private ListView lv;
// Button searchButton;
private EditText search;
CandidateModel cm;
DatabaseHelper db;
public ArrayList<CandidateModel> _candidatelist = new ArrayList<CandidateModel>();
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.search_candidate);
Log.v(TAG, "Searching Candidates");
lv = (ListView) findViewById(R.id.search_listview);
search = (EditText) findViewById(R.id.edit_search);
Log.v(TAG, "Going to enter into TextWatcher");
lv.setTextFilterEnabled(true);
search.addTextChangedListener(new TextWatcher() {
public void afterTextChanged(Editable s) {
}
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
}
public void onTextChanged(CharSequence s, int start, int before,
int count) {
Log.v(TAG, "Entered into the Text Changed Method");
((Filterable) _candidatelist).getFilter().filter(s.toString());
Log.v(TAG, "Finished Filtering");
lv.setAdapter((android.widget.ListAdapter) _candidatelist);
}
});
}
CandidateModel.java
public class CandidateModel {
public String getFirstname() {
return fname;
}
public void setFirstname(String fname) {
this.fname = fname;
}
public String getLastname() {
return lname;
}
public void setLastname(String lname) {
this.lname = lname;
}
public String idno="", fname="", lname="";
public String getIdno() {
return idno;
}
public void setIdno(String idno) {
this.idno = idno;
}
}
ViewRecord.java
public class ViewRecord extends Activity {
private ListView listview;
// private EditText search;
String TAG = "ViewRecord";
TextView totalrecords;
DatabaseHelper db;
public ArrayList<CandidateModel> _candidatelist = new ArrayList<CandidateModel>();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.view_candidates);
totalrecords = (TextView) findViewById(R.id.totalrecords);
listview = (ListView) findViewById(R.id.listview);
}
@Override
protected void onResume() {
super.onResume();
_candidatelist.clear();
db = new DatabaseHelper(getApplicationContext());
db.getWritableDatabase();
ArrayList<CandidateModel> cand_list = db.getCandidates();
for (int i = 0; i < cand_list.size(); i++) {
String tidno = cand_list.get(i).getIdno();
System.out.println("tidno>>>>>" + tidno);
String tname = cand_list.get(i).getFirstname();
String tprice = cand_list.get(i).getLastname();
CandidateModel _CandidateModel = new CandidateModel();
_CandidateModel.setIdno(tidno);
_CandidateModel.setFirstname(tname);
_CandidateModel.setLastname(tprice);
_candidatelist.add(_CandidateModel);
}
totalrecords.setText("Total Enrollments :-" + _candidatelist.size());
listview.setAdapter(new ListAdapter(this));
db.close();
}
public class ListAdapter extends BaseAdapter {
LayoutInflater inflater;
ViewHolder viewHolder;
public ListAdapter(Context context) {
inflater = LayoutInflater.from(context);
}
@Override
public int getCount() {
return _candidatelist.size();
}
@Override
public Object getItem(int position) {
return position;
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
if (convertView == null) {
convertView = inflater.inflate(R.layout.listview_row, null);
viewHolder = new ViewHolder();
viewHolder._id = (TextView) convertView
.findViewById(R.id.txtdisplaypname);
viewHolder.fname = (TextView) convertView
.findViewById(R.id.txtdisplaypprice);
viewHolder.lname = (TextView) convertView
.findViewById(R.id.txtdisplaypid);
convertView.setTag(viewHolder);
} else {
viewHolder = (ViewHolder) convertView.getTag();
}
viewHolder._id.setText(_candidatelist.get(position).getFirstname()
.trim());
viewHolder.fname.setText(_candidatelist.get(position).getLastname()
.trim());
viewHolder.lname.setText(_candidatelist.get(position).getIdno()
.trim());
final int temp = position;
(convertView.findViewById(R.id.btn_update))
.setOnClickListener(new OnClickListener() {
public void onClick(View arg0) {
String _id = String.valueOf(_candidatelist
.get(temp).getIdno());
String _fname = _candidatelist.get(temp)
.getFirstname();
String _lname = _candidatelist.get(temp)
.getLastname();
Intent intent = new Intent(ViewRecord.this,
AddUpdateValues.class);
Bundle bundle = new Bundle();
bundle.putString("id", _id);
bundle.putString("name", _fname);
bundle.putString("price", _lname);
intent.putExtras(bundle);
startActivity(intent);
}
});
(convertView.findViewById(R.id.btn_delete))
.setOnClickListener(new OnClickListener() {
public void onClick(View arg0) {
AlertDialog.Builder alertbox = new AlertDialog.Builder(
ViewRecord.this);
alertbox.setCancelable(true);
alertbox.setMessage("Are you sure you want to delete ?");
alertbox.setPositiveButton("Yes",
new DialogInterface.OnClickListener() {
public void onClick(
DialogInterface arg0, int arg1) {
Log.i(">>>TEMP>>>", temp + "");
Log.i(">>>getIdno>>>>>>",
_candidatelist.get(temp)
.getIdno().trim()
+ "");
System.out
.println(">>>getIdno>>>>>>"
+ _candidatelist
.get(temp)
.getIdno()
.trim());
db.removeCandidate(
_candidatelist.get(temp)
.getIdno().trim(),
"", "");
ViewRecord.this.onResume();
Toast.makeText(
getApplicationContext(),
"Record Deleted...",
Toast.LENGTH_SHORT).show();
}
});
alertbox.setNegativeButton("No",
new DialogInterface.OnClickListener() {
public void onClick(
DialogInterface arg0, int arg1) {
}
});
alertbox.show();
}
});
return convertView;
}
}
public class ViewHolder {
TextView _id;
TextView fname;
TextView lname;
}
}
答案 0 :(得分：0)
ArrayList不是Filterable。它在Filterable documentation：
定义可过滤行为。可过滤的类可以拥有其数据 由过滤器约束。可过滤的类通常是Adapter 的实施方式。
我认为您应该用ArrayAdapter
替换ArrayList