DATABASE SQLITE

1. BUAT PROJECT BARU

2. TAMBAHKAN 1 LISTVIEW DI .XML

3. BUAT CLASS BARU DIPROJECT KAMU

KLIK KANAN DI COM.EXAMPLE……, KEMUDIAN NEW,

CLASS, ISI NAMANYA “DATABASE”

ISIKAN NAMANYA

trus pilih finish,

Pastikan memiliki bentuk seperti berikut:

4. Buka kelas yang baru saja dibuka, tuliskan coding berikut :

1. package com.example.databasesqlite; 2. import java.util.ArrayList; 3. import android.content.ContentValues; 4. import android.content.Context; 5. import android.database.Cursor; 6. import android.database.sqlite.SQLiteDatabase; 7. import android.database.sqlite.SQLiteOpenHelper; 8. 9. public class Database extends SQLiteOpenHelper 10. { 11. private final static int DATABASE_VERSION = 1; 12. private final static String DATABASE_NAME = "TEMAN"; 13. private SQLiteDatabase DB; 14. 15. public Database (Context context) 16. { 17. super (context, DATABASE_NAME, null, DATABASE_VERSION); 18. } 19. 20. @Override 21. public void onCreate (SQLiteDatabase db) 22. { 23. createTable (db); 24. } 25. 26. public void openWritable() 27. { 28. this.DB = getReadableDatabase();

29. } 30. 31. public void close () 32. { 33. this.DB.close(); 34. } 35. 36. private void createTable(SQLiteDatabase db2) 37. { 38. // TODO Auto-generated method stub 39. String sql = "CREATE TABLE IF NOT EXISTS person " 40. + "(id INTEGER PRIMARY KEY, name TEXT)"; 41. db2.execSQL(sql); 42. } 43. 44. public long insertData (int id, String name) 45. { 46. ContentValues values = new ContentValues(); 47. values.put("name", name); 48. return DB.insert("person", null, values); 49. } 50. 51. public int updateData(int id, String name) 52. { 53. ContentValues values = new ContentValues(); 54. values.put("name", name); 55. return DB.update("person", values, "id = "+id, null); 56. } 57. public int deleteData (int id) 58. { 59. return DB.delete("person", "id = " +id, null); 60. } 61. 62. public ArrayList<String> getPersonList() 63. { 64. Cursor cursor = DB.rawQuery("SELECT * from person", null); 65. ArrayList<String> list = new ArrayList<String>(); 66. cursor.moveToFirst(); 67. for (int i = 0; i<cursor.getCount();i++ ) 68. { 69. list.add(cursor.getString(cursor.getColumnIndex("name"))); 70. cursor.moveToNext(); 71. } 72. return list; 73. } 74. 75. @Override 76. public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {

77. // TODO Auto-generated method stub 78. } 79. }

5. Buka main activity.java, tuiskan coding berikut

1. package com.example.databasesqlite; 2. import java.util.ArrayList; 3. import android.app.Activity; 4. import android.os.Bundle; 5. import android.view.Menu; 6. import android.view.MenuItem; 7. import android.widget.ArrayAdapter; 8. import android.widget.ListView; 9. 10. public class MainActivity extends Activity { 11. 12. @Override 13. protected void onCreate(Bundle savedInstanceState) { 14. super.onCreate(savedInstanceState); 15. setContentView(R.layout.activity_main); 16. 17. Database data = new Database(this); 18. data.openWritable(); 19. 20. //mengambil data dari database 21. ArrayList<String> listdata = data.getPersonList(); 22. 23. //periksa apakah ada data, jika tidak ada maka dilakukan inisialisasi data 24. if (listdata.size()<1) 25. { 26. //inisialisasi data dalam database 27. data.insertData(1, "Bayu"); 28. data.insertData(2, "Candra"); 29. data.insertData(3, "Dika"); 30. data.insertData(4, "Erna"); 31. data.insertData(5, "Farah"); 32. 33. listdata = data.getPersonList(); 34. } 35. 36. //perubahan data 37. data.updateData(1, "Bayu Wono"); 38. listdata = data.getPersonList(); 39. 40. //penghapusan data 41. data.deleteData(1); 42. listdata = data.getPersonList();

43. 44. data.close(); 45. ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, 46. android.R.layout.simple_list_item_1,listdata); 47. 48. ListView listView = (ListView) findViewById(R.id.listViewTampilData); 49. listView.setAdapter(adapter); 50. } 51. 52. @Override 53. public boolean onCreateOptionsMenu(Menu menu) { 54. // Inflate the menu; this adds items to the action bar if it is present. 55. getMenuInflater().inflate(R.menu.main, menu); 56. return true; 57. } 58. 59. @Override 60. public boolean onOptionsItemSelected(MenuItem item) { 61. // Handle action bar item clicks here. The action bar will 62. // automatically handle clicks on the Home/Up button, so long 63. // as you specify a parent activity in AndroidManifest.xml. 64. int id = item.getItemId(); 65. if (id == R.id.action_settings) { 66. return true; 67. } 68. return super.onOptionsItemSelected(item); 69. } 70. }