public void update(View view) {
SQLiteDatabase database = dbHelper.getWritableDatabase();
ContentValues values = new ContentValues();
values.put("price", 9.9);
database.update(
MyDatabaseHelper.TABLE_BOOK, values, "name = ?", new String[] {"Learn Android From 0"});
database.close();
}
public void add(View view) {
SQLiteDatabase database = dbHelper.getWritableDatabase();
ContentValues values = new ContentValues();
values.put("author", "lovexiaov");
values.put("price", 99.0);
values.put("page", 399);
values.put("name", "Learn Android From 0");
database.insert(MyDatabaseHelper.TABLE_BOOK, null, values);
Toast.makeText(AtyUseDatabase.this, "add data", Toast.LENGTH_SHORT).show();
database.close();
}
public void delete(View view) {
SQLiteDatabase database = dbHelper.getWritableDatabase();
database.delete(MyDatabaseHelper.TABLE_BOOK, "name = ?", new String[] {"Learn Android From 0"});
database.close();
}