Belajar SQLite Android external di folder Asset

Kita buat terlebih dahulu database sqlite dengan nama master.sqlite

Kemudian kita buat projek baru dengan nama MemberJogja dan masukkan master.sqlite di dalam folder assets.

Layout 

1. activity_main.xml
2. list.xml

Source java

1. DBHelper.java
2. MainActivity.java

activity_main.xml

list.xml

DBHelper.java

package com.memberjogja;


import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteException;
import android.database.sqlite.SQLiteOpenHelper;

public class DBHelper extends SQLiteOpenHelper {

 private static String DB_NAME = "master.sqlite";
 private SQLiteDatabase db;
 private final Context context;
 private String DB_PATH;

 public DBHelper(Context context) {
  super(context, DB_NAME, null, 1);
  this.context = context;
  DB_PATH = "/data/data/" + context.getPackageName() + "/" + "databases/";
 }

 public void createDataBase() throws IOException {

  boolean dbExist = checkDataBase();
  if (dbExist) {

  } else {
   this.getReadableDatabase();
   try {
    copyDataBase();
   } catch (IOException e) {
    throw new Error("Error copying database");
   }
  }
 }

 private boolean checkDataBase() {
  File dbFile = new File(DB_PATH + DB_NAME);
  return dbFile.exists();
 }

 private void copyDataBase() throws IOException {

  InputStream myInput = context.getAssets().open(DB_NAME);
  String outFileName = DB_PATH + DB_NAME;
  OutputStream myOutput = new FileOutputStream(outFileName);
  byte[] buffer = new byte[1024];
  int length;
  while ((length = myInput.read(buffer)) > 0) {
   myOutput.write(buffer, 0, length);
  }

  // Close the streams
  myOutput.flush();
  myOutput.close();
  myInput.close();

 }

 public Cursor getData() {
  try {
   String myPath = DB_PATH + DB_NAME;
   db = SQLiteDatabase.openDatabase(myPath, null, SQLiteDatabase.OPEN_READWRITE);
  }catch(SQLiteException e){
   
  }  
  
  Cursor c = db.rawQuery("SELECT * FROM kontak", null);

  return c;
 }

 @Override
 public void onCreate(SQLiteDatabase arg0) {
  // TODO Auto-generated method stub
 }

 @Override
 public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
  // TODO Auto-generated method stub
 }
}

MainActivity.java

package com.futsaljogja;

import java.io.IOException;

import android.app.Activity;
import android.database.Cursor;
import android.os.Bundle;
import android.widget.ListView;
import android.widget.SimpleCursorAdapter;
import android.widget.Toast;

public class MainActivity extends Activity {
 /** Called when the activity is first created. */
 DBHelper dbhelper;

 @Override
 public void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);
  
  // if you use siplecursoradapter then you should have _id as one of column name and its values should be integer in your db.
  // so "_id", "columnName1", "columnName2" are column names from your db.
  String[] from = new String[] { "_id", "nama", "alamat" };
  int[] to = new int[] { R.id.TextView1, R.id.TextView2, R.id.TextView3 };

  dbhelper = new DBHelper(this);
  try {
   dbhelper.createDataBase();
  } catch (IOException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }

  Cursor c = dbhelper.getData();
  
 
  Toast.makeText(getApplicationContext(), c.getString(c.getColumnIndex(from[2])), Toast.LENGTH_LONG).show();
  
  @SuppressWarnings("deprecation")
SimpleCursorAdapter adapter = new SimpleCursorAdapter(
    getApplicationContext(), R.layout.list, c, from, to);
  
   ListView list = (ListView) findViewById(R.id.ListView1);
   list.setAdapter(adapter);
   
 }
}