Android text search now displays recent searches from inital database implementation

src/org/kiwix/kiwixmobile/SearchActivity.java

@@ -1,5 +1,6 @@
 package org.kiwix.kiwixmobile;
 
+import android.content.Context;
 import android.content.Intent;
 import android.os.Bundle;
 import android.support.v4.view.MenuItemCompat;
@@ -10,14 +11,26 @@ import android.view.Menu;
 import android.view.MenuItem;
 import android.view.View;
 import android.widget.AdapterView;
+import android.widget.ArrayAdapter;
 import android.widget.ListView;
+import android.widget.TextView;
+
+import org.kiwix.kiwixmobile.utils.DatabaseHelper;
 import org.kiwix.kiwixmobile.views.AutoCompleteAdapter;
 
+import java.util.ArrayList;
+
 public class SearchActivity extends AppCompatActivity implements AdapterView.OnItemClickListener {
 
   private ListView mListView;
 
-  private AutoCompleteAdapter mAdapter;
+  private AutoCompleteAdapter mAutoAdapter;
+
+  private ArrayAdapter<String> mDefaultAdapter;
+
+  private SearchActivity context;
+
+  private DatabaseHelper mDatabaseHelper;
 
   @Override
   protected void onCreate(Bundle savedInstanceState) {
@@ -28,10 +41,17 @@ public class SearchActivity extends AppCompatActivity implements AdapterView.OnI
     getSupportActionBar().setDisplayHomeAsUpEnabled(true);
     getSupportActionBar().setHomeButtonEnabled(true);
 
+
     mListView = (ListView) findViewById(R.id.search_list);
-    mAdapter = new AutoCompleteAdapter(this);
+    mDatabaseHelper = new DatabaseHelper(this);
-    mListView.setAdapter(mAdapter);
+    ArrayList<String> a = mDatabaseHelper.getRecentSearches();
-    mListView.setOnItemClickListener(this);
+    mDefaultAdapter = new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1);
+    mListView.setAdapter(mDefaultAdapter);
+    mDefaultAdapter.addAll(a);
+    mDefaultAdapter.notifyDataSetChanged();
+    context = this;
+    mAutoAdapter = new AutoCompleteAdapter(context);
+    mListView.setOnItemClickListener(context);
   }
 
   @Override
@@ -57,7 +77,13 @@ public class SearchActivity extends AppCompatActivity implements AdapterView.OnI
 
       @Override
       public boolean onQueryTextChange(String s) {
-        mAdapter.getFilter().filter(s);
+        if (s.equals("")) {
+          mListView.setAdapter(mDefaultAdapter);
+        } else {
+          mListView.setAdapter(mAutoAdapter);
+          mAutoAdapter.getFilter().filter(s);
+        }
+
         return true;
       }
     });
@@ -80,7 +106,8 @@ public class SearchActivity extends AppCompatActivity implements AdapterView.OnI
 
   @Override
   public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
-    String title = mAdapter.getItemRaw(position);
+    String title = ((TextView) view).getText().toString();
+    mDatabaseHelper.insertSearch(title);
     sendMessage(title);
   }
 

src/org/kiwix/kiwixmobile/utils/DatabaseHelper.java

@@ -0,0 +1,87 @@
+package org.kiwix.kiwixmobile.utils;
+
+import android.content.ContentValues;
+import android.content.Context;
+import android.database.Cursor;
+import android.database.sqlite.SQLiteDatabase;
+import android.database.sqlite.SQLiteOpenHelper;
+import android.database.DatabaseUtils;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+
+
+    public class DatabaseHelper extends SQLiteOpenHelper {
+
+        public static final String DATABASE_NAME = "Kiwix.db";
+        public static final String CONTACTS_TABLE_NAME = "recentsearches";
+        public static final String CONTACTS_COLUMN_ID = "id";
+        public static final String CONTACTS_COLUMN_SEARCH = "search";
+
+        public DatabaseHelper(Context context)
+        {
+            super(context, DATABASE_NAME , null, 1);
+        }
+
+        @Override
+        public void onCreate(SQLiteDatabase db) {
+            // TODO Auto-generated method stub
+            db.execSQL(
+                    "create table " + CONTACTS_TABLE_NAME +
+                            " (id integer primary key, search text)"
+            );
+        }
+
+        @Override
+        public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
+            // TODO Auto-generated method stub
+            db.execSQL("DROP TABLE IF EXISTS " + CONTACTS_TABLE_NAME);
+            onCreate(db);
+        }
+
+        public boolean insertSearch  (String search)
+        {
+            SQLiteDatabase db = this.getWritableDatabase();
+            ContentValues contentValues = new ContentValues();
+            contentValues.put(CONTACTS_COLUMN_SEARCH, search);
+            db.insert(CONTACTS_TABLE_NAME, null, contentValues);
+            return true;
+        }
+
+        public Cursor getData(int id){
+            SQLiteDatabase db = this.getReadableDatabase();
+            Cursor res =  db.rawQuery( "select * from " + CONTACTS_TABLE_NAME + " where id="+id+"", null );
+            return res;
+        }
+
+        public int numberOfRows(){
+            SQLiteDatabase db = this.getReadableDatabase();
+            int numRows = (int) DatabaseUtils.queryNumEntries(db, CONTACTS_TABLE_NAME);
+            return numRows;
+        }
+
+        public Integer deleteSearches (Integer id)
+        {
+            SQLiteDatabase db = this.getWritableDatabase();
+            return db.delete(CONTACTS_TABLE_NAME,
+                    "id = ? ",
+                    new String[] { Integer.toString(id) });
+        }
+
+        public ArrayList<String> getRecentSearches()
+        {
+            ArrayList<String> array_list = new ArrayList<String>();
+
+            //hp = new HashMap();
+            SQLiteDatabase db = this.getReadableDatabase();
+            Cursor res =  db.rawQuery( "select * from " + CONTACTS_TABLE_NAME, null );
+            res.moveToLast();
+
+            while(res.isBeforeFirst() == false){
+                array_list.add(res.getString(res.getColumnIndex(CONTACTS_COLUMN_SEARCH)));
+                res.moveToPrevious();
+            }
+            return array_list;
+        }
+    }
+