I am passing my response to a SQLite database and was working until I started to tie a Cursor adapter to the listview. Now when I try to save the data and pull it I get java.lang.IllegalArgumentException: column '_id' does not exist. I want to keep my Primary Key as a specific response because the web service calls are tied to the same number. Is there a way to keep my KEY_ID as the employee number but get rid of the _id error?
I want the key to be the employee number so I can grab that and populate just that employee into the listvie attached to the cursor adapter. Also will need that so I can remove those users from the other list that I want to populate under the first one.
My DatabaseHandler
public class DatabaseHandler extends SQLiteOpenHelper {
private static final int DATABASE_VERSION = 1;
private static final String DATABASE_NAME = "employeeManager";
private static final String TABLE_EMPLOYEE = "employee";
//Employee table columns names
private static final String KEY_ID = "Employee_number";
private static final String KEY_FIRST_NAME = "First_name";
private static final String KEY_LAST_NAME = "Last_name";
private static final String KEY_PHONE_NUMBER_MOBILE = "Phone_mobile";
private static final String KEY_PHONE_NUMBER_OFFICE = "Phone_office";
private static final String KEY_PAYROLL_TITLE = "Payroll_title";
private static final String KEY_HAS_DIRECT_REPORTS = "Has_direct_reports";
private static final String KEY_EMAIL = "Email";
private static final String KEY_COST_CENTER = "Cost_center_id";
private static final String KEY_THUMBNAIL_IMAGE = "ThumbnailData";
public DatabaseHandler(Context context) {
super(context, DATABASE_NAME, null, DATABASE_VERSION);
}
@Override
public void onCreate(SQLiteDatabase db) {
String CREATE_EMPLOYEE_TABLE = "CREATE TABLE IF NOT EXISTS " + TABLE_EMPLOYEE + "("
+ KEY_ID + " STRING PRIMARY KEY,"
+ KEY_FIRST_NAME + " TEXT,"
+ KEY_LAST_NAME + " TEXT,"
+ KEY_PHONE_NUMBER_MOBILE + " TEXT,"
+ KEY_PHONE_NUMBER_OFFICE + " TEXT,"
+ KEY_PAYROLL_TITLE + " TEXT,"
+ KEY_HAS_DIRECT_REPORTS + " TEXT,"
+ KEY_EMAIL + " TEXT,"
+ KEY_THUMBNAIL_IMAGE + " TEXT,"
+ KEY_COST_CENTER + " TEXT" + ")";
db.execSQL(CREATE_EMPLOYEE_TABLE);
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
//drop old table if existence
db.execSQL("DROP TABLE IF EXISTS " + TABLE_EMPLOYEE);
//Create table again
onCreate(db);
}
//Add new employee
public boolean addEmployee(Employee employee) {
SQLiteDatabase database = this.getWritableDatabase();
ContentValues values = new ContentValues();
values.put(KEY_ID, employee.getEmployee_number());
values.put(KEY_FIRST_NAME, employee.getFirst_name());
values.put(KEY_LAST_NAME, employee.getLast_name());
values.put(KEY_PHONE_NUMBER_MOBILE, employee.getPhone_mobile());
values.put(KEY_PHONE_NUMBER_OFFICE, employee.getPhone_office());
values.put(KEY_HAS_DIRECT_REPORTS, employee.getHas_direct_reports());
values.put(KEY_EMAIL, employee.getEmail());
values.put(KEY_COST_CENTER, employee.getCost_center_id());
values.put(KEY_PAYROLL_TITLE, employee.getPayroll_title());
values.put(KEY_THUMBNAIL_IMAGE, employee.getThumbnailData());
//Inserting Row
database.insert(TABLE_EMPLOYEE, null, values);
database.close();
return true;
}
//Get single employee
public Employee getEmployee(int employeeNumber) {
SQLiteDatabase database = this.getReadableDatabase();
Cursor cursor = database.query(TABLE_EMPLOYEE, new String[] {
KEY_ID, KEY_FIRST_NAME, KEY_LAST_NAME, KEY_PHONE_NUMBER_OFFICE, KEY_PHONE_NUMBER_MOBILE,
KEY_HAS_DIRECT_REPORTS, KEY_EMAIL, KEY_COST_CENTER, KEY_PAYROLL_TITLE, KEY_THUMBNAIL_IMAGE}, KEY_ID + "=?",
new String[]{ String.valueOf(employeeNumber)}, null, null, null, null);
if(cursor != null && cursor.moveToFirst()) {
return new Employee(cursor.getString(0),
cursor.getString(1), cursor.getString(2), cursor.getString(3), cursor.getString(4),
cursor.getString(5), cursor.getString(6), cursor.getString(7), cursor.getString(8),
cursor.getString(9), cursor.getString(10), cursor.getString(11), cursor.getString(12),
cursor.getString(12), cursor.getString(14), cursor.getString(15), cursor.getString(16),
cursor.getString(17), cursor.getString(18), cursor.getString(19), cursor.getString(20),
cursor.getString(21), cursor.getString(22), cursor.getString(23), cursor.getString(24),
cursor.getString(24), cursor.getString(25), cursor.getString(26));
}
return null;
}
//Get All Employees
public ArrayList<Employee> getAllEmployees() {
ArrayList<Employee> employeeList = new ArrayList<>();
//Select all query
String selectQuery = "SELECT * FROM " + TABLE_EMPLOYEE;
SQLiteDatabase database = this.getWritableDatabase();
Cursor cursor = database.rawQuery(selectQuery, null);
//looping through all rows and adding to list
if (cursor.moveToFirst()) {
do {
Employee employee = new Employee();
employee.setEmployee_number(cursor.getString(cursor.getColumnIndex(KEY_ID)));
employee.setFirst_name(cursor.getString(cursor.getColumnIndex(KEY_FIRST_NAME)));
employee.setLast_name(cursor.getString(cursor.getColumnIndex(KEY_LAST_NAME)));
employee.setPhone_office(cursor.getString(cursor.getColumnIndex(KEY_PHONE_NUMBER_MOBILE)));
employee.setPhone_mobile(cursor.getString(cursor.getColumnIndex(KEY_PHONE_NUMBER_OFFICE)));
employee.setHas_direct_reports(cursor.getString(cursor.getColumnIndex(KEY_HAS_DIRECT_REPORTS)));
employee.setEmail(cursor.getString(cursor.getColumnIndex(KEY_EMAIL)));
employee.setCost_center_id(cursor.getString(cursor.getColumnIndex(KEY_COST_CENTER)));
employee.setPayroll_title(cursor.getString(cursor.getColumnIndex(KEY_PAYROLL_TITLE)));
employee.setThumbnailData(cursor.getString(cursor.getColumnIndex(KEY_THUMBNAIL_IMAGE)));
} while (cursor.moveToNext());
}
//return employees list
return employeeList;
}
//Get Employee Count
public int getEmployeeCount() {
String countQuery = "SELECT * FROM " + TABLE_EMPLOYEE;
SQLiteDatabase database = this.getReadableDatabase();
Cursor cursor = database.rawQuery(countQuery, null);
cursor.close();
return cursor.getCount();
}
//Updating single employee
public int updateEmployee(Employee employee){
SQLiteDatabase database = this.getWritableDatabase();
ContentValues values = new ContentValues();
values.put(KEY_FIRST_NAME, employee.getFirst_name());
values.put(KEY_LAST_NAME, employee.getLast_name());
values.put(KEY_PHONE_NUMBER_MOBILE, employee.getPhone_mobile());
values.put(KEY_PHONE_NUMBER_OFFICE, employee.getPhone_office());
values.put(KEY_HAS_DIRECT_REPORTS, employee.getHas_direct_reports());
values.put(KEY_EMAIL, employee.getEmail());
values.put(KEY_COST_CENTER, employee.getCost_center_id());
values.put(KEY_PAYROLL_TITLE, employee.getPayroll_title());
values.put(KEY_THUMBNAIL_IMAGE, employee.getThumbnailData());
return database.update(TABLE_EMPLOYEE, values, KEY_ID + " = ?",
new String[] {String.valueOf(employee.getEmployee_number())});
}
//Delete single employee
public void deleteEmployee(Employee employee) {
SQLiteDatabase database = this.getWritableDatabase();
database.delete(TABLE_EMPLOYEE, KEY_ID + " = ?",
new String[] {String.valueOf(employee.getEmployee_number())});
database.close();
}
}
Where I create, add, and get the database
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mTopList = (ListView) findViewById(R.id.mTopList);
TopListCursorAdapter topAdapter = new TopListCursorAdapter(this, topViewList(mTopCursor));
mTopList.setAdapter(topAdapter);
directReportListView = (ListView) findViewById(R.id.mDirectReportList);
mProgressBar = (ProgressBar) findViewById(R.id.progressBar);
mProgressBar.setVisibility(View.VISIBLE);
mBottomListViewAdapter = new BottomListViewAdapter(this, mEmployees);
directReportListView.setAdapter(mBottomListViewAdapter);
getBottomViewXMLData();
//GUI for seeing android SQLite Database in Chrome Dev Tools
Stetho.InitializerBuilder inBuilder = Stetho.newInitializerBuilder(this);
inBuilder.enableWebKitInspector(Stetho.defaultInspectorModulesProvider(this));
Stetho.Initializer in = inBuilder.build();
Stetho.initialize(in);
//Top List View work
// mTopListViewAdapter = new TopListCursorAdapter(this, mEmployees);
}
public void getBottomViewXMLData() {
OkHttpClient client = getUnsafeOkHttpClient();
Request request = new Request.Builder()
.url(getString(R.string.API_FULL_URL))
.build();
client.newCall(request).enqueue(new Callback() {
@Override
public void onFailure(Call call, IOException e) {
e.printStackTrace();
}
@Override
public void onResponse(Call call, final Response response) throws IOException {
final String responseData = response.body().string();
final InputStream stream = new ByteArrayInputStream(responseData.getBytes());
final XMLPullParserHandler parserHandler = new XMLPullParserHandler();
DatabaseHandler databasehandler = new DatabaseHandler(getApplicationContext());
final ArrayList<Employee> employees = (ArrayList<Employee>) parserHandler.parse(stream);
for (Employee e : employees) {
databasehandler.addEmployee(e);
}
Log.i("ADAM", databasehandler.toString());
mEmployees.clear();
mEmployees.addAll(employees);
//tell adapter on the UI thread its data changed
runOnUiThread(new Runnable() {
@Override
public void run() {
mBottomListViewAdapter.notifyDataSetChanged();
directReportListView.setVisibility(View.VISIBLE);
mProgressBar.setVisibility(View.GONE);
}
});
}
});
}
public Cursor topViewList(Cursor employeeCursor) {
//always starts with Mark
int startingEmployeeNumber = startingEmployeeNumber(int);
DatabaseHandler mDatabase = new DatabaseHandler(this);
SQLiteDatabase database = mDatabase.getWritableDatabase();
mDatabase.getEmployee(startingEmployeeNumber);
employeeCursor = database.rawQuery("SELECT * FROM employee", null);
return employeeCursor;
}
}
TopListCursorAdapter
public class TopListCursorAdapter extends CursorAdapter {
public TopListCursorAdapter(Context context, Cursor cursor) {
super(context, cursor, 0);
}
@Override
public View newView(Context context, Cursor cursor, ViewGroup parent) {
return LayoutInflater.from(context).inflate(R.layout.contact_cardview_layout, parent, false);
}
@Override
public void bindView(View view, final Context context, Cursor cursor) {
TextView tvFirstName = (TextView) view.findViewById(R.id.personFirstName);
TextView tvLastName = (TextView) view.findViewById(R.id.personLastName);
TextView tvTitle = (TextView) view.findViewById(R.id.personTitle);
ImageView mPeepPic = (ImageView) view.findViewById(R.id.person_photo);
ImageView mDetailsButton = (ImageButton) view.findViewById(R.id.fullDetailButton);
CardView mCardView = (CardView) view.findViewById(R.id.home_screen_cardView);
String mFirstName = cursor.getString(cursor.getColumnIndexOrThrow("First_name"));
String mLastName = cursor.getString(cursor.getColumnIndexOrThrow("Last_name"));
String mPayrollTitle = cursor.getString(cursor.getColumnIndexOrThrow("Payroll_title"));
String mPicData = cursor.getString(cursor.getColumnIndexOrThrow("ThumbnailData"));
//parse image from database
byte[] imageAsBytes = Base64.decode(mPicData.getBytes(), Base64.DEFAULT);
Bitmap parsedImage = BitmapFactory.decodeByteArray(imageAsBytes, 0, imageAsBytes.length);
mPeepPic.setImageBitmap(parsedImage);
tvFirstName.setText(mFirstName);
tvLastName.setText(mLastName);
tvTitle.setText(mPayrollTitle);
mDetailsButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(context, "This is working well here also", Toast.LENGTH_SHORT).show();
}
});
}
}
Many of the Android API widgets that interact with a SQLite database assume the Cursor contains a column named _id. You have at least two choices to work around this error:
Add a column named _id. You can make it include the same data as Employee_number. The easiest way to do this is SELECT Employee_number AS _id.
Avoid using the parts of the Android API that uses _id and write your own versions of these methods.