Retrieve individual items in cursor

Retrieve individual items in cursor

In the last exercise "Add data to SQLite database, with SimpleCursorAdapter updated dynamically", to retrieve individual items associated with the cursor when any list item clicked. We can use the code:

Cursor cursor = (Cursor) parent.getItemAtPosition(position);
int item_id = cursor.getInt(cursor.getColumnIndex(SQLiteAdapter.KEY_ID));
String item_content1 = cursor.getString(cursor.getColumnIndex(SQLiteAdapter.KEY_CONTENT1));
String item_content2 = cursor.getString(cursor.getColumnIndex(SQLiteAdapter.KEY_CONTENT2));



Modify AndroidSQLite.java listContentOnItemClickListener() to handle the OnItemClick event of the ListView.

package com.exercise.AndroidSQLite;

import android.app.Activity;
import android.database.Cursor;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.SimpleCursorAdapter;
import android.widget.Toast;

public class AndroidSQLite extends Activity {

EditText inputContent1, inputContent2;
Button buttonAdd, buttonDeleteAll;

private SQLiteAdapter mySQLiteAdapter;
ListView listContent;

SimpleCursorAdapter cursorAdapter;
Cursor cursor;

   /** Called when the activity is first created. */
   @Override
   public void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
       setContentView(R.layout.main);
      
       inputContent1 = (EditText)findViewById(R.id.content1);
       inputContent2 = (EditText)findViewById(R.id.content2);
       buttonAdd = (Button)findViewById(R.id.add);
       buttonDeleteAll = (Button)findViewById(R.id.deleteall);
      
       listContent = (ListView)findViewById(R.id.contentlist);

       mySQLiteAdapter = new SQLiteAdapter(this);
       mySQLiteAdapter.openToWrite();

       cursor = mySQLiteAdapter.queueAll();
       String[] from = new String[]{SQLiteAdapter.KEY_ID, SQLiteAdapter.KEY_CONTENT1, SQLiteAdapter.KEY_CONTENT2};
       int[] to = new int[]{R.id.id, R.id.text1, R.id.text2};
       cursorAdapter =
        new SimpleCursorAdapter(this, R.layout.row, cursor, from, to);
       listContent.setAdapter(cursorAdapter);
       listContent.setOnItemClickListener(listContentOnItemClickListener);
      
       buttonAdd.setOnClickListener(buttonAddOnClickListener);
       buttonDeleteAll.setOnClickListener(buttonDeleteAllOnClickListener);
      
   }
  
   Button.OnClickListener buttonAddOnClickListener
   = new Button.OnClickListener(){

 @Override
 public void onClick(View arg0) {
  // TODO Auto-generated method stub
  String data1 = inputContent1.getText().toString();
  String data2 = inputContent2.getText().toString();
  mySQLiteAdapter.insert(data1, data2);
  updateList();
 }
   
   };
  
   Button.OnClickListener buttonDeleteAllOnClickListener
   = new Button.OnClickListener(){

 @Override
 public void onClick(View arg0) {
  // TODO Auto-generated method stub
  mySQLiteAdapter.deleteAll();
  updateList();
 }
   
   };
  
   private ListView.OnItemClickListener listContentOnItemClickListener
   = new ListView.OnItemClickListener(){

 @Override
 public void onItemClick(AdapterView<?> parent, View view, int position,
   long id) {
  // TODO Auto-generated method stub
 
  Cursor cursor = (Cursor) parent.getItemAtPosition(position);
  int item_id = cursor.getInt(cursor.getColumnIndex(SQLiteAdapter.KEY_ID));
           String item_content1 = cursor.getString(cursor.getColumnIndex(SQLiteAdapter.KEY_CONTENT1));
           String item_content2 = cursor.getString(cursor.getColumnIndex(SQLiteAdapter.KEY_CONTENT2));
          
           String item = String.valueOf(item_id) + " : " + item_content1 +"\n"
                +item_content2;
  Toast.makeText(AndroidSQLite.this, item, Toast.LENGTH_LONG).show();
 }};

@Override
protected void onDestroy() {
 // TODO Auto-generated method stub
 super.onDestroy();
 mySQLiteAdapter.close();
}



private void updateList(){
 cursor.requery();
   }

}

Other files follow the last post "Add data to SQLite database, with SimpleCursorAdapter updated dynamically".