Android- Suchergebnis nicht angezeigt werden aber bereits SELECT CRUD Sqlite

Question

Here is the UI after input keyword

Hallo, ich bin neu in Android ausführen, ich viele Tutorials gelesen haben, aber sie machen Datenbank manuell aus dem Code. Ich möchte eine Suchfunktion in den Apps machen und Daten aus der SQLite-Datenbank abrufen.

Ich benutze MainDIY für die Suche Aktivität.

MainDIY.java

import android.app.SearchManager; 
import android.content.Context; 
import android.content.Intent; 
import android.database.Cursor; 
import android.database.sqlite.SQLiteDatabase; 
import android.os.Bundle; 

import android.support.design.widget.FloatingActionButton; 
import android.support.v4.widget.SimpleCursorAdapter; 
import android.support.v7.app.ActionBarActivity; 
import android.support.v7.widget.SearchView; 
import android.util.Log; 
import android.view.Menu; 
import android.view.MenuInflater; 
import android.view.View; 
import android.widget.AdapterView; 
import android.widget.AdapterView.OnItemClickListener; 
import android.widget.ImageView; 
import android.widget.ListView; 

import java.util.ArrayList; 

import timber.log.Timber; 


public class MainDIY extends ActionBarActivity implements OnItemClickListener, SearchView.OnQueryTextListener, SearchView.OnCloseListener{ 
    public static final String KEY_ID  = "_id"; 

    private static final int INSERT_ID = Menu.FIRST; 

    private DBAdapter   db; 

    FloatingActionButton fab; 
    ListView listview; 
    private MyAdapter defaultAdapter; 
    private ArrayList<String> daftarData; 
    //private ArrayList<String> arraylist=new ArrayList<String>(); 


    @Override 
    protected void onCreate(Bundle savedInstanceState) 
    { 

     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_diy); 
     Timber.d("line 37, content activity_diy"); 
     db = new DBAdapter(this); 
     db.open(); 



     //populate list 
     /** 
     daftarData = new ArrayList<String>(); 
     nameList.add("Apples"); 
     nameList.add("Oranges"); 
     nameList.add("Grapes"); 
     nameList.add("Pineapples"); 
     nameList.add("Mangoes"); 
     nameList.add("Watermelons"); 
     nameList.add("Strawberries"); 
     nameList.add("Bananas"); 
     nameList.add("Apricots"); 
     nameList.add("Olives"); 
     nameList.add("Peaches"); 
     nameList.add("Jackfruits"); 

     for (int i = 0; i < 6 
     ; i++) { 
     daftarData.add("Diana" + i); 
     } 
     //defaultAdapter = new MyAdapter(MainDIY.this, daftarData); 
     //listview.setAdapter(defaultAdapter); 
     defaultAdapter = new MyAdapter(DIY.this, nameList);*/ 



     listview = (ListView) findViewById(R.id.list); 

     listview.setEmptyView(findViewById(R.id.empty)); 




     listview.setOnItemClickListener(this); 

     hasilDataTersimpan(); 

     // float button 
     fab = (FloatingActionButton) findViewById(R.id.fab); 
     fab.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View v) { 
       Intent intent = new Intent(MainDIY.this, AddDIY.class); 
       startActivity(intent); 
      } 
     }); 


     //List<DataDIY> contacts = db.getAllContact(); 

     // for (DataDIY cn : contacts) { 
     //  String log = "Name: " + cn.getName() ; 
     // Writing Contacts to log 
     // Log.d("Name: ", log); 
     //} 
     // Create the list of names which will be displayed on search 
     //for (String id: nameList) { 
     // mDbAdapter.createContact(DataDIY);} 

    } 

    // menampilkan apa yang dicari dan ada di database 
    private void hasilPencarian(String query) { 
     /** */ 

     Cursor cursor = db.searchByInputText((query != null ? query : "@@@@")); 



     String[] from = new String[] 
       { 
         DBAdapter.COL_NAME 
       }; 
     int[] to = new int[] 
       { 
         R.id.txtName 
       };Log.d("MainActivity","mencari dan memakai id list item"); 

     SimpleCursorAdapter cursorAdapter = new SimpleCursorAdapter(this, R.layout.list_adapter, cursor, from, to); // atu list 
     Log.d("MainActivity","mencari dan memakai id list item"); 


     listview.setAdapter(cursorAdapter); 


     // TODO Auto-generated method stub 
     //Cursor cur = db.getAllContact(); 



     //listview Click listener 
     /** listview.setOnItemClickListener(new AdapterView.OnItemClickListener() { 
     public void onItemClick(AdapterView<?> parent, View view, int position, long id) { 

     Cursor cursor = (Cursor) listview.getItemAtPosition(position); 

     String selectedName = cursor.getString(cursor.getColumnIndexOrThrow("name")); 
     Toast.makeText(DIY.this, selectedName, 0).show(); 

     listview.setAdapter(defaultAdapter); 

     for (int pos = 0; pos < nameList.size(); pos++) { 
     if (nameList.get(pos).equals(selectedName)){ 
     position = pos; 
     break; 
     } 
     } 

     Handler handler = new Handler(); 
     final int finalPosition = position; 
     handler.post(new Runnable() { 
     @Override 
     public void run() { 

     listview.setSelection(finalPosition); 
     } 
     }); 

     searchView.setQuery("",true); 
     } 
     }); */ 


    } 


    // menampilkan data" yang tersimpan 
    private void hasilDataTersimpan() { 
     /** Load database setelah mengklik gambar tugu diy*/ 
     // TODO Auto-generated method stub 
     Cursor cur = db.getAllContact(); 

     String[] from = new String[] 
       { 
         DBAdapter.COL_NAME 
       }; 
     int[] to = new int[] 
       { 
         R.id.txtName 
       }; 

     SimpleCursorAdapter adapter = new SimpleCursorAdapter(this, R.layout.list_adapter, cur, from, to); 
     listview.setAdapter(adapter); 
    } 


    @Override 
    public boolean onCreateOptionsMenu(Menu menu) { 
     MenuInflater inflater = getMenuInflater(); 
     // Inflate menu to add items to action bar if it is present. 
     inflater.inflate(R.menu.menu_main, menu); 
     // Associate searchable configuration with the SearchView 
     SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE); 
     SearchView searchView = (SearchView) menu.findItem(R.id.menu_search).getActionView(); 

     searchView.setSearchableInfo(searchManager.getSearchableInfo(getComponentName())); 
     searchView.setIconifiedByDefault(false); 

     SearchView.OnQueryTextListener textChangeListener = new SearchView.OnQueryTextListener() { 
      @Override 
      public boolean onQueryTextChange(String newText) { 
       if (!newText.isEmpty()){ 
        hasilPencarian(newText + "*"); 
        Timber.i("text berubah "+newText.toString()); 
       } else { 
        hasilDataTersimpan(); 

        Timber.i("searchview kosong"); 
       } 

       return false; 
      } 

      @Override 
      public boolean onQueryTextSubmit(String query) { 
       hasilPencarian(query + "*"); 

       Log.d("MainActivity", "mencari di onQueryTextSubmit " + query.toString()); 
       return false; 
      } 
     }; 
     searchView.setOnQueryTextListener(textChangeListener); 

     return super.onCreateOptionsMenu(menu); 
    } 




    @Override 
    public void onItemClick(AdapterView<?> arg0, View v, int pos, long id) 
    { 
     // TODO Auto-generated method stub 
     Bundle bundle = new Bundle(); 
     bundle.putLong(KEY_ID, id); 
     Intent intent = new Intent(MainDIY.this, EditDIY.class); 
     intent.putExtras(bundle); 
     db.close(); 
     startActivity(intent); 

    } 

    @Override 
    public boolean onClose() { 
     Timber.d("onclose"); 

     return false; 

    } 

    @Override 
    public boolean onQueryTextSubmit(String query) { 
     hasilPencarian(query + "*"); 

     Log.d("MainActivity", "mencari di onQueryTextSubmit " + query.toString()); 
     return false; 
    } 



    @Override 
    public boolean onQueryTextChange(String newText) { 
     if (!newText.isEmpty()){ 
      hasilPencarian(newText + "*"); 
      Timber.i("text berubah "+newText.toString()); 
     } else { 
      hasilDataTersimpan(); 

      Timber.i("searchview kosong"); 
     } 

     return false; 
    } 

    /** public boolean onQueryTextChange(String newText) { 
    if (!newText.isEmpty()){ 
    hasilPencarian(newText + "*"); 
    Timber.d("onquerytextchange = "+ newText.toString()); 
    } else { 
    myList.setAdapter(defaultAdapter); 
    } 

    return false; 
    } */ 

    @Override 
    protected void onDestroy() { 
     super.onDestroy(); 

     if (db != null) { 
      db.close(); 
     } 
    } 


    @Override 
    protected void onNewIntent(Intent intent) { 
     handleIntent(intent); 
    } 

    private void handleIntent(Intent intent) { 

     if (Intent.ACTION_SEARCH.equals(intent.getAction())) { 
      String query = intent.getStringExtra(SearchManager.QUERY); 
      //use the query to search 
     } 
    } 


} 

DataDIY.java

public class DataDIY 
{ 
    private int  id; 
    private String name; 
    private String telp; 
    private String kata; 

    public DataDIY() 
    { 
     // TODO Auto-generated constructor stub 
    } 

    public DataDIY(String name, String telp, String kata) 
    { 
     super(); 
     this.name = name; 
     this.telp = telp; 
     this.kata = kata; 
    } 

    public int getId() 
    { 
     return id; 
    } 

    public void setId(int id) 
    { 
     this.id = id; 
    } 

    public String getName() 
    { 
     return name; 
    } 

    public void setName(String name) 
    { 
     this.name = name; 
    } 

    public String getTelp() 
    { 
     return telp; 
    } 

    public void setTelp(String telp) 
    { 
     this.telp = telp; 
    } 

    public String getKata() 
    { 
     return kata; 
    } 

    public void setKata(String kata) 
    { 
     this.kata = kata; 
    } 

} 

DBAdapter.java

import android.content.ContentValues; 
import android.content.Context; 
import android.database.Cursor; 
import android.database.SQLException; 
import android.database.sqlite.SQLiteDatabase; 
import android.database.sqlite.SQLiteOpenHelper; 
import android.util.Log; 

import java.util.ArrayList; 
import java.util.List; 

public class DBAdapter 
{ 
    private static final String DB_NAME  = "contact_db"; 
    private static final int DB_VER  = 1; 

    public static final String FTS_VIRTUAL_TABLE = "contact"; 
    public static final String COL_ID  = "_id"; 
    public static final String COL_NAME = "name"; 
    public static final String COL_TELP = "telp"; 

    private static final String TAG   = "ContactDBAdapter"; 
    private DatabaseHelper  dbHelper; 
    private SQLiteDatabase  db; 

    private static final String DB_CREATE = "create virtual table " + FTS_VIRTUAL_TABLE+ 
     " using fts3 (_id integer primary key, name text not null);"; 

    private final Context  context; 

    private static class DatabaseHelper extends SQLiteOpenHelper 
    { 

     public DatabaseHelper(Context context) 
     { 
      // TODO Auto-generated constructor stub 
      super(context, DB_NAME, null, DB_VER); 
     } 

     @Override 
     public void onCreate(SQLiteDatabase db) 
     { 
      // TODO Auto-generated method stub 
      db.execSQL(DB_CREATE); 
     } 

     @Override 
     public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) 
     { 
      // TODO Auto-generated method stub 
      Log.d(TAG, "upgrade DB"); 
      db.execSQL("DROP TABLE IF EXISTS " + FTS_VIRTUAL_TABLE); 
      onCreate(db); 

     } 

    } 

    public DBAdapter(Context context) 
    { 
     this.context = context; 
     // TODO Auto-generated constructor stub 
    } 

    public DBAdapter open() throws SQLException 
    { 
     dbHelper = new DatabaseHelper(context); 
     db = dbHelper.getWritableDatabase(); 
     return this; 
    } 

    public void close() 
    { 
     dbHelper.close(); 
    } 

    public void createContact(DataDIY contact) 
    { 
     ContentValues val = new ContentValues(); 
     val.put(COL_NAME, contact.getName()); 
     //val.put(COL_TELP, contact.getTelp()); 
     db.insert(FTS_VIRTUAL_TABLE, null, val); 
    } 

    public boolean deleteContact(int id) 
    { 
     return db.delete(FTS_VIRTUAL_TABLE, COL_ID + "=" + id, null) > 0; 
    } 

    public Cursor getAllContact() 
    { 
     return db.query(FTS_VIRTUAL_TABLE, new String[] 
       { 
         COL_ID, COL_NAME 
       }, null, null, null, null, null); 
    } 


    public Cursor getSingleContact(int id) 
    { 
     Cursor cursor = db.query(FTS_VIRTUAL_TABLE, new String[] 
       { 
         COL_ID, COL_NAME 
       }, COL_ID + "=" + id, null, null, null, null); 

     if (cursor != null) 
      cursor.moveToFirst(); 

     return cursor; 
    } 

    public boolean updateContact(DataDIY contact) 
    { 
     ContentValues val = new ContentValues(); 
     val.put(COL_NAME, contact.getName()); 
     //val.put(COL_TELP, contact.getTelp()); 

     return db.update(FTS_VIRTUAL_TABLE, val, COL_ID + "=" + contact.getId(), null) > 0; 
    } 

    public Cursor searchByInputText(String inputText) throws SQLException { 

     String query = "SELECT *" 
       + " from " + FTS_VIRTUAL_TABLE + 
       " where " + COL_NAME + " = '" + inputText+"'" ; 

     Log.d("DBAdapter","mencari di searchbyinputtext " + query.toString()); 

     Cursor mCursor = db.rawQuery(query,null); 
     List<String[]> list = new ArrayList<String[]>(); 


     if (mCursor != null) { 
      mCursor.moveToFirst(); 
     } 

     Log.d("DBAdapter","melewati mCursor rawquery"); 
     return mCursor; 

    } 

} 

Sag mir, wenn meine Methode falsch ist. Hier ein weiterer java in git

Answer 1

Versuchen Sie, die App zu deinstallieren und erneut auf Ihrem Gerät zu installieren. weil oft updation in sqlite-datenbank ist nur betroffen, wenn die anwendung 1. mal in gerät installiert ist. Ich hoffe, es funktioniert.

Answer 2

In Ihrer SQL-Abfrage suchen Sie nach einer genauen Übereinstimmung, aber es scheint, als wollten Sie Ergebnisse, die das enthalten, was Sie eingegeben haben. mit der Klausel Versuchen LIKE statt =:

public Cursor searchByInputText(String inputText) throws SQLException { 
    String query = "SELECT * FROM "+ FTS_VIRTUAL_TABLE + 
      " WHERE" + COL_NAME + " LIKE '%" + inputText + "%'"; 

ich verwendet, um die Wildcard % an beiden Enden, aber man könnte auch _ oder nichts, je nachdem, was Sie suchen. Weitere Informationen finden Sie unter https://www.sqlite.org/lang_expr.html.

Answer 3

Es kann angezeigt werden .. seine Arbeit .. Für Sie CRUD Neuling wollen Lernen und Suchen SQLite lokale Datenbank, einen Blick in my github

Dank vu Antwort bfr