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Update same ListView with new data in CursorAdapter

I am really stuck and have no idea what to do. I have looked into startActivityForResult and Content providers and I have no clue how to implement any of them for this app.
I am not seeing how to get the data from the database and update the displayBottomList using same listview so I don't have to redirect the user to a new layout/activity. Not sure if I can even call a new query and set that to a different cursor and switch between them. I have seen swapCursor but how does that work when using the same adapter?
I have a ListView that I want to refresh with new data from a web service call when the user clicks on a row within the list. I am using a CursorAdapter. I can get the data correctly onClick of the row.
Where I am stuck, is how do I update that listView to repopulate with the new info from the database/response without sending me to another Activity. I want the user to stay on the same screen but just update the listView with the new data.
Not sure how to get the adapter to notify the adapter to update and populate a new ListView when the onClick is in the adapter, but the ListView is being created in the MainActivity.
The Adapter for BottomListView, the one I want to update when a row is clicked.
public class BottomListViewAdapter extends CursorAdapter {
private String mEmployeeNumber;
private EmployeeDBHandler dbHandler;
public BottomListViewAdapter(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, final Cursor cursor) {
dbHandler = new EmployeeDBHandler(context);
ViewHolder holder;
holder = new ViewHolder();
holder.tvFirstName = (TextView) view.findViewById(R.id.personFirstName);
holder.tvLastName = (TextView) view.findViewById(R.id.personLastName);
holder.tvTitle = (TextView) view.findViewById(R.id.personTitle);
holder.mPeepPic = (ImageView) view.findViewById(R.id.person_photo);
holder.mDetailsButton = (ImageButton) view.findViewById(R.id.fullDetailButton);
holder.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 mTitle = cursor.getString(cursor.getColumnIndexOrThrow("Payroll_title"));
String mThumbnail = cursor.getString(cursor.getColumnIndexOrThrow("ThumbnailData"));
holder.tvFirstName.setText(mFirstName);
holder.tvLastName.setText(mLastName);
holder.tvTitle.setText(mTitle);
if (mThumbnail != null) {
byte[] imageAsBytes = Base64.decode(mThumbnail.getBytes(), Base64.DEFAULT);
Bitmap parsedImage = BitmapFactory.decodeByteArray(imageAsBytes, 0, imageAsBytes.length);
holder.mPeepPic.setImageBitmap(parsedImage);
} else {
holder.mPeepPic.setImageResource(R.drawable.img_place_holder_adapter);
}
final int position = cursor.getPosition();
holder.mDetailsButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
cursor.moveToPosition(position);
String mEmployeeNumber = cursor.getString(1);
String mEmail = cursor.getString(8);
String mFirstName = cursor.getString(2);
String mLastName = cursor.getString(3);
String mPhoneMobile = cursor.getString(4);
String mPhoneOffice = cursor.getString(5);
String mCostCenter = cursor.getString(10);
String mHasDirectReports = cursor.getString(7);
String mTitle = cursor.getString(6);
String mPic = cursor.getString(9);
Intent mIntent = new Intent(context, EmployeeFullInfo.class);
mIntent.putExtra("Employee_number", mEmployeeNumber);
mIntent.putExtra("Email", mEmail);
mIntent.putExtra("First_name", mFirstName);
mIntent.putExtra("Last_name", mLastName);
mIntent.putExtra("Phone_mobile", mPhoneMobile);
mIntent.putExtra("Phone_office", mPhoneOffice);
mIntent.putExtra("Cost_center_id", mCostCenter);
mIntent.putExtra("Has_direct_reports", mHasDirectReports);
mIntent.putExtra("Payroll_title", mTitle);
mIntent.putExtra("ThumbnailData", mPic);
mIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
view.getContext().startActivity(mIntent);
}
});
holder.mCardView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
cursor.moveToPosition(position);
mEmployeeNumber = cursor.getString(1);
Toast.makeText(context, mEmployeeNumber, Toast.LENGTH_SHORT).show();
callNewDirectReport();
notifyDataSetChanged();
}
});
}
public static class ViewHolder {
TextView tvFirstName;
TextView tvLastName;
TextView tvTitle;
ImageView mPeepPic;
ImageButton mDetailsButton;
CardView mCardView;
}
private void callNewDirectReport() {
String mDirectReportUrl = "mURL";
HttpUrl.Builder urlBuilder = HttpUrl.parse(mDirectReportUrl).newBuilder();
urlBuilder.addQueryParameter("manager_employee_number", mEmployeeNumber);
String url = urlBuilder.build().toString();
OkHttpClient client = getUnsafeOkHttpClient();
Request request = new Request.Builder()
.url(url)
.build();
client.newCall(request).enqueue(new Callback() {
#Override
public void onFailure(Call call, IOException e) {
e.printStackTrace();
}
#Override
public void onResponse(Call call, Response response) throws IOException {
final String responseData = response.body().string();
final InputStream stream = new ByteArrayInputStream(responseData.getBytes());
final XMLPullParserHandler parserHandler = new XMLPullParserHandler();
final ArrayList<Employee> employees = (ArrayList<Employee>) parserHandler.parse(stream);
for (Employee e : employees) {
dbHandler.addEmployee(e);
}
}
});
}
#Override
public void notifyDataSetChanged() {
super.notifyDataSetChanged();
}
}
My MainActivity that is calling the adapter
public class MainActivity extends AppCompatActivity {
private ProgressBar mProgressBar;
private BottomListViewAdapter mBottomAdapter;
private View mDividerView;
EmployeeDBHandler dbHandler;
private int mStartingEmployeeID = mStartingID;
private String table = "employees";
private static final int LOADER_INTEGER = 1;
private Cursor mBottomCursor, mTopCursor;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mProgressBar = (ProgressBar) findViewById(R.id.progressBar);
mDividerView = findViewById(R.id.divider);
dbHandler = new EmployeeDBHandler(getApplicationContext());
mProgressBar.setVisibility(View.VISIBLE);
mDividerView.setVisibility(View.GONE);
getXMLData();
//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);
}
public void getXMLData() {
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();
final ArrayList<Employee> employees = (ArrayList<Employee>) parserHandler.parse(stream);
for (Employee e : employees) {
dbHandler.addEmployee(e);
}
runOnUiThread(new Runnable() {
#Override
public void run() {
mProgressBar.setVisibility(View.GONE);
mDividerView.setVisibility(View.VISIBLE);
displayTopList();
displayBottomList();
}
});
}
});
}
public void displayTopList() {
SQLiteDatabase db = dbHandler.getWritableDatabase();
mTopCursor = db.rawQuery("SELECT * FROM " + table + " WHERE " + "Employee_number" + "=" + mStartingEmployeeID, null);
ListView mTopListView = (ListView) findViewById(R.id.mTopList);
TopListCursorAdapter topAdapter = new TopListCursorAdapter(this, mTopCursor);
mTopListView.setAdapter(topAdapter);
}
public void displayBottomList() {
SQLiteDatabase db = dbHandler.getWritableDatabase();
mBottomCursor = db.rawQuery("SELECT * FROM " + table + " WHERE " +
"Employee_number" + "!=" + mStartingEmployeeID + " AND " +
"Manager_employee_number" + "=" + mStartingEmployeeID + " ORDER BY " +
"Last_name" + " ASC", null);
ListView mBottomListView = (ListView) findViewById(R.id.mDirectReportList);
mBottomAdapter = new BottomListViewAdapter(this, mBottomCursor);
mBottomListView.setAdapter(mBottomAdapter);
mBottomAdapter.notifyDataSetChanged();
}
}

Right now your code in callNewDirectReport() makes an API request and stores the results in the database. This will not update the adapter to show the new items, instead you need to requery the database and get a newer Cursor. Below is an example of how you may do it:
public class BottomListViewAdapter extends CursorAdapter {
private String mEmployeeNumber;
private EmployeeDBHandler dbHandler;
private Activity activityRef;
public BottomListViewAdapter(Context context, Cursor cursor) {
super(context, cursor, 0);
// keep a reference to the activity
activityRef = (Activity) context;
}
//...
private void callNewDirectReport() {
//...
client.newCall(request).enqueue(new Callback() {
#Override
public void onFailure(Call call, IOException e) {
e.printStackTrace();
}
#Override
public void onResponse(Call call, Response response) throws IOException {
final String responseData = response.body().string();
final InputStream stream = new ByteArrayInputStream(responseData.getBytes());
final XMLPullParserHandler parserHandler = new XMLPullParserHandler();
final ArrayList<Employee> employees = (ArrayList<Employee>) parserHandler.parse(stream);
for (Employee e : employees) {
dbHandler.addEmployee(e);
}
// the new items are in the database so requery the database to get a new fresher Cursor:
SQLiteDatabase db = dbHandler.getWritableDatabase();
Cursor fresherCursor = db.rawQuery("SELECT * FROM " + table + " WHERE " +
"Employee_number" + "!=" + mStartingEmployeeID + " AND " +
"Manager_employee_number" + "=" + mStartingEmployeeID + " ORDER BY " +
"Last_name" + " ASC", null);
//change the adapter's Cursor
activityRef.runOnUiThread(new Runnable() {
public void run() {
swapCursor(freshedCursor);
}
});
}
});
}
}

You can use startActivityForResult to receive a callback from an activity, here you have a tutorial explaining how to use it: https://developer.android.com/training/basics/intents/result.html
When you receive the callback in the onActivityResult, you can update your data and call notifyDatasetChanged.
You can't call code from an activity in another because activities are handled by android. Android could have killed the activity that you are trying to call and will just recreate it when necessary.

Passing object to CursorAdapter getting null

I am getting a callback in my main activity that is passing an object of values from a ListView click. If I throw a toast the toast is displaying the key, value pairs. I want to take that and add it to the TopListCursorAdapter to populate a new row. I am getting null on the topAdapter.notifyDataSetChanged();
Not sure how to add mEmployee to the adapter, I have tried to
#Override
public void onBottomListClick(Employee e) {
mEmployee.add(e);
dbHandler.addEmployee(e);
SQLiteDatabase db = dbHandler.getWritableDatabase();
final Cursor clickedEmployee = db.rawQuery("SELECT * FROM " + "employees" + " WHERE " +
"Employee_number" + "=" + e.getEmployee_number(), null);
// change the adapter's Cursor
topAdapter.changeCursor(clickedEmployee);
}
But I do not want to pass a cursor and the TopListCursorAdapter wants one. I just want to add mEmployee to the existing List in TopListCursorAdapter.
public class MainActivity extends FragmentActivity implements BottomListViewAdapter.BottomListClickListener {
private ProgressBar mProgressBar;
EmployeeDBHandler dbHandler;
private TopListCursorAdapter topAdapter;
private BottomListViewAdapter bottomAdapter;
private ArrayList mEmployee;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mProgressBar = (ProgressBar) findViewById(R.id.progressBar);
dbHandler = new EmployeeDBHandler(getApplicationContext());
mProgressBar.setVisibility(View.VISIBLE);
getXMLData();
//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);
}
public void getXMLData() {
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();
final ArrayList<Employee> employees = (ArrayList<Employee>) parserHandler.parse(stream);
for (Employee e : employees) {
dbHandler.addEmployee(e);
}
runOnUiThread(new Runnable() {
#Override
public void run() {
mProgressBar.setVisibility(View.GONE);
displayTopList();
displayBottomList();
}
});
}
});
}
public void displayTopList() {
FragmentTransaction fragmentTransaction = getSupportFragmentManager().beginTransaction();
fragmentTransaction.replace(R.id.topFragment, new TopFragment());
fragmentTransaction.commit();
}
public void displayBottomList() {
FragmentTransaction fragmentTransaction = getSupportFragmentManager().beginTransaction();
fragmentTransaction.replace(R.id.bottomFragment, new BottomFragment());
fragmentTransaction.commit();
}
#Override
public void onBottomListClick(Employee e) {
mEmployee.add(e);
dbHandler.addEmployee(e);
SQLiteDatabase db = dbHandler.getWritableDatabase();
final Cursor clickedEmployee = db.rawQuery("SELECT * FROM " + "employees" + " WHERE " +
"Employee_number" + "=" + e.getEmployee_number(), null);
// change the adapter's Cursor
topAdapter.changeCursor(clickedEmployee);
}
}
TopListCursorAdapter
public class TopListCursorAdapter extends CursorAdapter {
private EmployeeDBHandler dbHandler;
private Activity activityRef;
public TopListCursorAdapter(Context context, Cursor cursor) {
super(context, cursor, 0);
activityRef = (Activity) context;
}
#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, final Cursor cursor) {
dbHandler = new EmployeeDBHandler(context);
ViewHolder holder;
holder = new ViewHolder();
holder.tvFirstName = (TextView) view.findViewById(R.id.personFirstName);
holder.tvLastName = (TextView) view.findViewById(R.id.personLastName);
holder.tvTitle = (TextView) view.findViewById(R.id.personTitle);
holder.mPeepPic = (ImageView) view.findViewById(R.id.person_photo);
holder.mDetailsButton = (ImageButton) view.findViewById(R.id.fullDetailButton);
holder.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 mThumbnail = cursor.getString(cursor.getColumnIndexOrThrow("ThumbnailData"));
holder.tvFirstName.setText(mFirstName);
holder.tvLastName.setText(mLastName);
holder.tvTitle.setText(mPayrollTitle);
if (mThumbnail != null) {
byte[] imageAsBytes = Base64.decode(mThumbnail.getBytes(), Base64.DEFAULT);
Bitmap parsedImage = BitmapFactory.decodeByteArray(imageAsBytes, 0, imageAsBytes.length);
holder.mPeepPic.setImageBitmap(parsedImage);
} else {
holder.mPeepPic.setImageResource(R.drawable.img_place_holder_adapter);
}
activityRef.runOnUiThread(new Runnable() {
#Override
public void run() {
}
});
final int position = cursor.getPosition();
holder.mDetailsButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
cursor.moveToPosition(position);
String mEmployeeNumber = cursor.getString(1);
String mEmail = cursor.getString(8);
String mFirstName = cursor.getString(2);
String mLastName = cursor.getString(3);
String mPhoneMobile = cursor.getString(4);
String mPhoneOffice = cursor.getString(5);
String mCostCenter = cursor.getString(10);
String mHasDirectReports = cursor.getString(7);
String mTitle = cursor.getString(6);
String mPic = cursor.getString(9);
Intent mIntent = new Intent(context, EmployeeFullInfo.class);
mIntent.putExtra("Employee_number", mEmployeeNumber);
mIntent.putExtra("Email", mEmail);
mIntent.putExtra("First_name", mFirstName);
mIntent.putExtra("Last_name", mLastName);
mIntent.putExtra("Phone_mobile", mPhoneMobile);
mIntent.putExtra("Phone_office", mPhoneOffice);
mIntent.putExtra("Cost_center_id", mCostCenter);
mIntent.putExtra("Has_direct_reports", mHasDirectReports);
mIntent.putExtra("Payroll_title", mTitle);
mIntent.putExtra("ThumbnailData", mPic);
mIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
v.getContext().startActivity(mIntent);
}
});
}
public static class ViewHolder {
TextView tvFirstName;
TextView tvLastName;
TextView tvTitle;
ImageView mPeepPic;
ImageButton mDetailsButton;
CardView mCardView;
}
}

I do not want to pass a cursor and the TopListCursorAdapter wants one
Sure. You have a DBHandler which can give you a Cursor.
dbHandler = new EmployeeDBHandler(getApplicationContext());
And you have an addEmployee method.
dbHandler.addEmployee(e);
So the question is - how did you create the TopListCursorAdapter without already having a Cursor since it is required??
Anyways, you should not stick a EmployeeDBHandler in the adapter.
It only wants a Cursor. Plus, you never seem to use that class in there.
public class TopListCursorAdapter extends CursorAdapter {
// private EmployeeDBHandler dbHandler; // ** Not needed
private Context mContext; // Don't need an Activity
public TopListCursorAdapter(Context context, Cursor cursor) {
super(context, cursor, 0);
mContext = context; // Just a Context, no Activity
}
And you should never need to create a new TopListAdapter after the first creation of one, you can call changeCursor directly on the existing adapter.
#Override
public void onBottomListClick(Employee e) {
mEmployee.add(e);
dbHandler.addEmployee(e);
// topAdapter = new TopListCursorAdapter(); // ** Nope
Cursor newCursor = dbHandler.getEmployees(); // TODO: Implement this
topAdapter.changeCursor(newCursor); // Updates the UI itself
Intent employeeDetail = new Intent(MainActivity.this, EmployeeFullInfo.class);
employeeDetail.putExtra("Employee_number", e.getNumber());
...
startActivity(employeeDetail);
}
Note: If you use Parcelable Employee objects, you do not need a bunch putExtra and getExtra methods on the Intents.
Additionally, you can store an Employee object as part of the ViewHolder for simpler data management. That way, you only need to extract data from the Cursor into an Employee, then the ViewHolder can maintain that since you are duplicating the effort within onClick to get the Cursor data.
public static class ViewHolder {
Employee employee; // See here
TextView tvFirstName;
TextView tvLastName;
TextView tvTitle;
ImageView mPeepPic;
ImageButton mDetailsButton;
CardView mCardView;
}

Android cursor return empty contacts

I need to get all contacts that have at least a phone number. Android contacts may be picked from many accounts like gmail,skype,vibe etc. I made the classes i need to get the contacts i need. My problem that it gets anyway contacts that don't have at least 1 phone number and shows just their name and avatar. Can any1 say what I am doing wrong in my code? My code source is shared below.
ContactsActivity.class
#Override
public Loader<Cursor> onCreateLoader(int id, Bundle args) {
selectionString = edtSearch.getText().toString();
String[] selectionArgs = {"%" + selectionString + "%", selectionString + "%", "%" + selectionString};
String selection = ContactsContract.Contacts.DISPLAY_NAME + " LIKE ? OR "
+ ContactsContract.Contacts.DISPLAY_NAME + " LIKE ? OR "
+ ContactsContract.Contacts.DISPLAY_NAME + " LIKE ? AND "
+ ContactsContract.Contacts.HAS_PHONE_NUMBER + "=='1'";
return new CursorLoader(this,
ContactsContract.Contacts.CONTENT_URI, // URI
null, // projection fields
selection, // the selection criteria
selectionArgs, // the selection args
ContactsContract.Contacts.DISPLAY_NAME + " ASC" // the sort order
);
}
#Override
public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
ContactsAdapter.createCheckedContacts(data.getCount());
contactsAdapter.setCursor(data);
contactsAdapter.swapCursor(data);
}
#Override
public void onLoaderReset(Loader<Cursor> loader) {
contactsAdapter.swapCursor(null);
}
ContactsAdapter.class
public class ContactsAdapter extends CursorAdapter {
static boolean status = true;
private static boolean[] checkedContacts;
private static Context context;
private static Cursor cursor;
public ContactsAdapter(Context context, Cursor c) {
super(context, c, 0);
this.context = context;
}
public static void setCursor(Cursor cursor) {
ContactsAdapter.cursor = cursor;
}
public static void createCheckedContacts(int count) {
checkedContacts = new boolean[count];
}
public static void saveSelectedContacts(ClientDao contactDao) {
for (int i = 0; i < checkedContacts.length; i++) {
if (checkedContacts[i]) {
cursor.moveToPosition(i);
DatabaseHelper.getInstance().saveClient(ContactUtils.cursorToContact(cursor, context), status);
status = !status;
}
}
}
#Override
public View newView(Context context, Cursor cursor, ViewGroup parent) {
View convertView = ((Activity) context).getLayoutInflater().inflate(R.layout.contact_item, parent, false);
ViewHolder holder = new ViewHolder(convertView);
convertView.setTag(holder);
return convertView;
}
#Override
public void bindView(View convertView, final Context context, final Cursor cursor) {
final ViewHolder holder = (ViewHolder) convertView.getTag();
final Contact contact = ContactUtils.cursorToContact(cursor, context);
holder.tvName.setText(contact.getDisplayName());
if (isFirst(cursor)) {
holder.tvLetter.setVisibility(View.VISIBLE);
String letter = String.valueOf(Character.toUpperCase(contact.getDisplayName().charAt(0)));
holder.tvLetter.setText(letter);
} else {
holder.tvLetter.setVisibility(View.INVISIBLE);
}
convertView.setTag(convertView.getId(), contact);
if (!TextUtils.isEmpty(contact.getPhotoUri())) {
new ImageLoaderUtils.ContactImage(contact, convertView, holder.ivUserImage, context).execute();
} else {
holder.ivUserImage.setImageResource(R.drawable.ic_profile);
}
holder.inviteBtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent(context, ContactInvitationActivity_.class);
intent.putExtra("contact", contact);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK);
context.startActivity(intent);
}
});
}
private boolean isFirst(Cursor cursor) {
Contact c1 = ContactUtils.cursorToContact(cursor, context);
if (cursor.getPosition() == 0)
return true;
cursor.moveToPrevious();
Contact c2 = ContactUtils.cursorToContact(cursor, context);
if (c1.getDisplayName() == null || c2.getDisplayName() == null)
return false;
if (Character.toUpperCase(c1.getDisplayName().charAt(0)) != Character.toUpperCase(c2.getDisplayName().charAt(0)))
return true;
return false;
}
private static class ViewHolder {
TextView tvName;
TextView tvLetter;
ImageView ivUserImage;
Button inviteBtn;
RelativeLayout rlContact;
private ViewHolder(View convertView) {
tvName = (TextView) convertView.findViewById(R.id.tvContactsName);
tvLetter = (TextView) convertView.findViewById(R.id.tvLetter);
ivUserImage = (ImageView) convertView.findViewById(R.id.ivUserIcon);
inviteBtn = (Button) convertView.findViewById(R.id.inviteBtn);
rlContact = (RelativeLayout) convertView.findViewById(R.id.rlContact);
}
}
}
ContactUtil.class
public class ContactUtils {
public static Contact cursorToContact(Cursor c, Context context) {
if (c == null || c.getPosition() < 0) return null;
Contact contactObj = new Contact();
try {
contactObj.setID(c.getString(c.getColumnIndex(ContactsContract.Contacts._ID)));
contactObj.setDisplayName(c.getString(c.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME)));
contactObj.setPhotoUri(c.getString(c.getColumnIndex(ContactsContract.Contacts.PHOTO_URI)));
contactObj.setPhoneNumber("");
contactObj.setEmail("");
setPhoneNumber(c, contactObj, context);
setEmail(contactObj, context);
} catch (Exception e) {
e.printStackTrace();
}
return contactObj;
}
public static void setPhoneNumber(Cursor c, Contact contactObj, Context context) {
if (Integer.parseInt(c.getString(c.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER))) > 0) {
// Query phone here. Covered next
Cursor phones = context.getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, ContactsContract.CommonDataKinds.Phone.CONTACT_ID + " = " + contactObj.getID(), null, null);
phones.moveToFirst();
String phoneNumber = phones.getString(phones.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
Log.i("Number", phoneNumber);
contactObj.setPhoneNumber(phoneNumber);
phones.close();
}
}
public static void setEmail(Contact contactObj, Context context) {
Cursor emailCur = context.getContentResolver().query(
ContactsContract.CommonDataKinds.Email.CONTENT_URI,
null,
ContactsContract.CommonDataKinds.Email.CONTACT_ID + " = ?",
new String[]{contactObj.getID()}, null);
while (emailCur.moveToNext()) {
// This would allow you get several email addresses
// if the email addresses were stored in an array
String email = emailCur.getString(
emailCur.getColumnIndex(ContactsContract.CommonDataKinds.Email.DATA));
String emailType = emailCur.getString(
emailCur.getColumnIndex(ContactsContract.CommonDataKinds.Email.TYPE));
contactObj.setEmail(email);
}
emailCur.close();
}
}

How do I get the ID item in the database?

I am new to android development and must take the value of the id in the clicked item database.
Already searched several posts but not found the answer .
Below is my code Listview :
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.seleciona_jogador_act);
final BancoController bc = new BancoController(this);
final ArrayList<JogadorEntidade> jogadorEntidade = bc.arrayJogador(this);
listView = (ListView) findViewById(R.id.lvSelecionar);
final SelecionaAdapter adapter = new SelecionaAdapter(this, R.layout.adapter_seleciona, jogadorEntidade);
FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
fab.setBackgroundTintList(ColorStateList.valueOf(background));
fab.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
alertInserirJogador(SelecionaJogadorAct.this);
}
});
listView.setAdapter(adapter);
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
//I NEED THIS CODE
Context context = getApplicationContext();
CharSequence text = "ID: " + ", Posicao: " + position;
int duration = Toast.LENGTH_SHORT;
Toast.makeText(context, text, duration).show();
//bc.deletaRegistro(id_player);
Intent intent = getIntent();
SelecionaJogadorAct.this.finish();
startActivity(intent);
}
});
}
My Adapter:
public class SelecionaAdapter extends ArrayAdapter<JogadorEntidade> {
Context context;
int layoutID;
ArrayList<JogadorEntidade> alJogador;
public SelecionaAdapter(Context context, int layoutID, ArrayList<JogadorEntidade> alJogador){
super(context, layoutID, alJogador);
this.context = context;
this.alJogador = alJogador;
this.layoutID = layoutID;
}
#Override
public View getView(int position, View convertView, ViewGroup parent){
View row = convertView;
PlayerHolder holder = null;
if (row == null){
LayoutInflater inflater = ((Activity)context).getLayoutInflater();
row = inflater.inflate(layoutID, parent, false);
holder = new PlayerHolder();
holder.txtNome = (TextView)row.findViewById(R.id.txtNomeSelecionar);
holder.txtVitorias = (TextView)row.findViewById(R.id.txtVitóriasSelecionar);
holder.txtDerrotas = (TextView)row.findViewById(R.id.txtDerrotasSelecionar);
row.setTag(holder);
}else {
holder = (PlayerHolder)row.getTag();
}
JogadorEntidade jogadorEntidade = alJogador.get(position);
holder.txtNome.setText(jogadorEntidade.getNome());
holder.txtVitorias.setText("V: " + jogadorEntidade.vitórias);
holder.txtDerrotas.setText("D: " + jogadorEntidade.derrotas);
return row;
}
static class PlayerHolder{
TextView txtNome;
TextView txtVitorias;
TextView txtDerrotas;
}
JogadorEntidade:
public class JogadorEntidade {
public String nome;
public Integer id_jogador;
public String vitórias;
public String derrotas;
public Integer getId_jogador() {
return id_jogador;
}
public void setId_player(int id_player) {
this.id_jogador = id_player;
}
public String getNome() {
return nome;
}
public void setNome(String nome) {
this.nome = nome;
}
public String getVitórias() {
return vitórias;
}
public void setVitórias(String vitórias) {
this.vitórias = vitórias;
}
public String getDerrotas() {
return derrotas;
}
public void setDerrotas(String derrotas) {
this.derrotas = derrotas;
}
public JogadorEntidade(String nome, String vitórias, String derrotas){
super();
this.nome = nome;
this.vitórias = vitórias;
this.derrotas = derrotas;
}
public JogadorEntidade(){}
public void insereJogador(JogadorEntidade jogadorEntidade) {
db = banco.getWritableDatabase();
ContentValues values = new ContentValues();
values.put(banco.NOME_JOGADOR, jogadorEntidade.getNome());
values.put(banco.VITORIAS, jogadorEntidade.getVitórias());
values.put(banco.DERROTAS, jogadorEntidade.getDerrotas());
db.insert(CriaBanco.TABELA_JOGADOR, null, values);
db.close();
}
public Cursor carregaJogador() {
Cursor cursor;
String[] campos = {banco.NOME_JOGADOR, banco.VITORIAS, banco.DERROTAS};
db = banco.getReadableDatabase();
cursor = db.query(banco.TABELA_JOGADOR, campos, null, null, null, null, null, null);
if (cursor != null) {
cursor.moveToFirst();
}
db.close();
return cursor;
}
public void deletaRegistro(int id){
String where = CriaBanco.ID_JOGADOR + "=" + id;
db = banco.getReadableDatabase();
db.delete(CriaBanco.TABELA_JOGADOR, where, null);
db.close();
}
public ArrayList<JogadorEntidade> arrayJogador(Context context) {
ArrayList<JogadorEntidade> al = new ArrayList<JogadorEntidade>();
BancoController bancoController = new BancoController(context);
Cursor cursor;
cursor = bancoController.carregaJogador();
if (cursor != null) {
if (cursor.moveToFirst()) {
String nome = cursor.getString(cursor.getColumnIndex(banco.NOME_JOGADOR));
String vitorias = cursor.getString(cursor.getColumnIndex(banco.VITORIAS));
String derrotas = cursor.getString(cursor.getColumnIndex(banco.DERROTAS));
JogadorEntidade jogadorEntidade = new JogadorEntidade(nome, vitorias, derrotas);
al.add(jogadorEntidade);
while (cursor.moveToNext()) {
nome = cursor.getString(cursor.getColumnIndex(banco.NOME_JOGADOR));
vitorias = cursor.getString(cursor.getColumnIndex(banco.VITORIAS));
derrotas = cursor.getString(cursor.getColumnIndex(banco.DERROTAS));
jogadorEntidade = new JogadorEntidade(nome, vitorias, derrotas);
al.add(jogadorEntidade);
}
}
}
return al;
}

First you need to request the id when making the query (if the id is the one created in the database the column mame is _id or you can use tablename._id or whatever you need):
String[] campos = {"_id", banco.NOME_JOGADOR, banco.VITORIAS, banco.DERROTAS};
Then you need to add the id to the object when you read the cursor:
public ArrayList<JogadorEntidade> arrayJogador(Context context) {
ArrayList<JogadorEntidade> al = new ArrayList<JogadorEntidade>();
BancoController bancoController = new BancoController(context);
Cursor cursor;
cursor = bancoController.carregaJogador();
if (cursor != null) {
if (cursor.moveToFirst()) {
String nome = cursor.getString(cursor.getColumnIndex(banco.NOME_JOGADOR));
String vitorias = cursor.getString(cursor.getColumnIndex(banco.VITORIAS));
String derrotas = cursor.getString(cursor.getColumnIndex(banco.DERROTAS));
long id = cursor.getLong(cursor.getColumnIndex("_id",0));
JogadorEntidade jogadorEntidade = new JogadorEntidade(id, nome, vitorias, derrotas);
al.add(jogadorEntidade);
while (cursor.moveToNext()) {
nome = cursor.getString(cursor.getColumnIndex(banco.NOME_JOGADOR));
vitorias = cursor.getString(cursor.getColumnIndex(banco.VITORIAS));
derrotas = cursor.getString(cursor.getColumnIndex(banco.DERROTAS));
long id = cursor.getLong(cursor.getColumnIndex("_id",0));
jogadorEntidade = new JogadorEntidade(id, nome, vitorias, derrotas);
al.add(jogadorEntidade);
}
}
}
return al;
}
Anyway this is not the way to go in android. You should read all the list and then show it. You should use the viewholder pattern and only load the player when you are going to show it. Also instead of using a list you should move to recyclerviews. Listviews can be consider deprecated at this point. See the tutorial: http://developer.android.com/training/material/lists-cards.html

How to update row in CursorAdapter properly

I have a trouble with my CursorAdapter data updating.
When I press on the "star" img of listview row item i needs to get changes in DB column "isFav" (0 to 1 and vice versa) and show completed star or free star(favorite checkbox e.g.).
But when I pressing on the star - current row star is not updating, but last of showed rows get affected, like as I press on it. Screenshot: http://tinypic.com/r/2eph8uf/5
The following code is placing below:
private class MyAdapter extends CursorAdapter {
private LayoutInflater mLayoutInflater;
public MyAdapter(Context context, Cursor c, boolean autoRequery) {
super(context, c, autoRequery);
mContext = context;
mLayoutInflater = LayoutInflater.from(context);
}
News tmp = new News(0,0,null,null,0,0);
#Override
public void bindView(View v, Context context, Cursor c) {
tmp.setName(c.getString(c.getColumnIndexOrThrow(dbHelper.NAME)));
tmp.setDescr(c.getString(c.getColumnIndexOrThrow(dbHelper.DESCRIPTION)));
tmp.setPubdate(c.getLong(c.getColumnIndexOrThrow(dbHelper.DATE)));
tmp.setGuid(c.getInt(c.getColumnIndexOrThrow(dbHelper.UID)));
tmp.setIsFav(c.getInt(c.getColumnIndexOrThrow(dbHelper.IS_FAV)));
tmp.setIsRead(c.getInt(c.getColumnIndexOrThrow(dbHelper.IS_READ)));
TextView title_text = (TextView) v.findViewById(R.id.text);
if (title_text != null) {
title_text.setText(tmp.getName() + " " + convertLongToDate(tmp.getPubdate()));
}
title_text.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
Intent _intent = new Intent(getActivity(), ItemActivity.class);
_intent.putExtra("title", tmp.getName() + " " + Long.toString(tmp.getPubdate()));
_intent.putExtra("desc", tmp.getDescr());
startActivity(_intent);
if (tmp.getIsRead() == 1)
return;
tmp.setIsRead(1);
//working wrong!
ContentValues cv = getContValues(tmp);
loader.update(dbHelper.DATABASE_NAME, cv, dbHelper.UID + "=" + cv.getAsInteger("_id"), null);
// db.UpdateItem(db.getWritableDatabase(), tmp);
// getLoaderManager().initLoader(0, null, mCallbacks);
}
});
final ImageView fav_img = (ImageView) v.findViewById(R.id.image);
if (fav_img != null)
{
if (tmp.getIsFav() != 0) {
fav_img.setImageResource(R.drawable.fav);
}
else fav_img.setImageResource(R.drawable.unfav);
}
fav_img.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
if (tmp.getIsFav() == 1)
{
tmp.setIsFav(0);
fav_img.setImageResource(R.drawable.unfav);
}
else
{
tmp.setIsFav(1);
fav_img.setImageResource(R.drawable.fav);
}
Log.d("fav:", Integer.toString(tmp.getIsFav()) + " id: " + Integer.toString(tmp.getGuid()));
// db.UpdateItem(db.getWritableDatabase(), tmp);
// getLoaderManager().restartLoader(0, null, mCallbacks);
//Working wrong!
ContentValues cv = getContValues(tmp);
loader.update(dbHelper.DATABASE_NAME, cv, dbHelper.UID + "=" + cv.getAsInteger("_id"), null);
}
});
LinearLayout lay = (LinearLayout) v.findViewById(R.id.item_layout);
if (tmp.getIsRead() != 0)
lay.setBackgroundColor(Color.GRAY);
else lay.setBackgroundColor(Color.YELLOW);
}
private ContentValues getContValues(News tmp)
{
ContentValues cv = new ContentValues();
cv.put("_id", tmp.getGuid());
cv.put("title", tmp.getName());
cv.put("pubdate", tmp.getPubdate());
cv.put("description", tmp.getDescr());
cv.put("isRead", tmp.getIsRead());
cv.put("isFav", tmp.getIsFav());
return cv;
}
#Override
public View newView(Context context, Cursor cursor, ViewGroup parent) {
View v = mLayoutInflater.inflate(R.layout.list_item, parent, false);
return v;
}
private String convertLongToDate(long value)
{
Locale l = new Locale("ru");
//if (l.getCountry())
Date d = new Date(value);
SimpleDateFormat df = new SimpleDateFormat("d M", l);
return new String(df.format(d));
}
}

Just do this adjustments:
final ImageView fav_img = (ImageView) v.findViewById(R.id.image);
Boolean is_favourite = false;
if (fav_img != null)
{
if (tmp.getIsFav() != 0) {
fav_img.setImageResource(R.drawable.fav);
}
else fav_img.setImageResource(R.drawable.unfav);
}
fav_img.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
if (is_favourite) // if your row is already favourite
{
is_favourite=false;
fav_img.setImageResource(R.drawable.unfav);
}
else
{
is_favourite= true;
fav_img.setImageResource(R.drawable.fav);
}
//Log.d("fav:", Integer.toString(tmp.getIsFav()) + " id: " + Integer.toString(tmp.getGuid()));
// db.UpdateItem(db.getWritableDatabase(), tmp);
// getLoaderManager().restartLoader(0, null, mCallbacks);
//Working wrong!
ContentValues cv = getContValues(tmp);
loader.update(dbHelper.DATABASE_NAME, cv, dbHelper.UID + "=" + cv.getAsInteger("_id"), null);
}
});