Develop Reference

Retrofit asynchrone tash

Here is my code:
private void InitialContact(final Context context)
{
final ContactDatabase db = new ContactDatabase(context);
context.openOrCreateDatabase("****", MODE_PRIVATE, null);
if(refrech){
refrech(db, context);
}
getcontact(db, context);
db.close();
}
A getContact fonction (In main thread)
private void getcontact(final ContactDatabase db, final Context context){
SQLiteDatabase dbread = db.getReadableDatabase();
String[] retour = {
"pseudo",
"adresse",
"image", "ID"
};
Cursor cursor = dbread.query("Contact", retour, null, null, null, null, "pseudo");
while(cursor.moveToNext()) {
String pseudo = cursor.getString(cursor.getColumnIndexOrThrow("pseudo"));
Log.d("debug", "getcontact: "+pseudo);
listcontact.add(new Contact(pseudo));
}
cursor.close();
}
And the Asynchrone task refresh
private void refrech(final ContactDatabase db, final Context context){
final SQLiteDatabase dbwrite = db.getWritableDatabase();
db.onRefresh(dbwrite);
SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(context.getApplicationContext());
int ID = preferences.getInt("ID", 0);
if(ID != 0){
ApiInterface mApiService = this.getInterfaceService();
Call<ContactCall> mService = mApiService.getcontact(ID);
mService.enqueue(new Callback<ContactCall>() {
#Override
public void onResponse(Call<ContactCall> call, Response<ContactCall> response) {
ContactCall ContactCallobjet = response.body();
ArrayList pseudo = ContactCallobjet.isLogin;
for(int i = 0 ;pseudo.size() <= i; i++){
ContentValues values = new ContentValues();
String contact = (String) pseudo.get(i);
values.put("pseudo", contact);
values.put("adresse", "test");
values.put("image", "test");
values.put("ID", "5");
dbwrite.insert("Contact", null, values);
}
}
#Override
public void onFailure(Call<ContactCall> call, Throwable t) {
Log.d("DEBUG", "populateWithInitialContacts: "+t.getMessage());
}
});
} else {
Log.d("DEBUG", "populateWithInitialContacts: Error ID");
}
}
My probleme is a getContact fonction is call before a asynchrone function (refrech)
I have test a CallBack but It did not work

Have your getContact method be called in your onResponse and failure callbacks:
private void InitialContact(final Context context) {
final ContactDatabase db = new ContactDatabase(context );
context.openOrCreateDatabase("****", MODE_PRIVATE, null);
if(refrech){
refrech(db, context);
} else {
getcontact(db, context);
}
db.close();
}
private void refrech(final ContactDatabase db, final Context context){
final SQLiteDatabase dbwrite = db.getWritableDatabase();
db.onRefresh(dbwrite);
SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(context.getApplicationContext());
int ID = preferences.getInt("ID", 0);
if(ID != 0){
ApiInterface mApiService = this.getInterfaceService();
Call<ContactCall> mService = mApiService.getcontact(ID);
mService.enqueue(new Callback<ContactCall>() {
#Override
public void onResponse(Call<ContactCall> call, Response<ContactCall> response) {
ContactCall ContactCallobjet = response.body();
ArrayList pseudo = ContactCallobjet.isLogin;
for(int i = 0 ;pseudo.size() <= i; i++){
ContentValues values = new ContentValues();
String contact = (String) pseudo.get(i);
values.put("pseudo", contact);
values.put("adresse", "test");
values.put("image", "test");
values.put("ID", "5");
dbwrite.insert("Contact", null, values);
// call get contacts after the response
getcontact(db, context);
}
}
#Override
public void onFailure(Call<ContactCall> call, Throwable t) {
Log.d("DEBUG", "populateWithInitialContacts: "+t.getMessage());
// call get contacts on error
getcontact(db, context);
}
});
} else {
Log.d("DEBUG", "populateWithInitialContacts: Error ID");
// call get contacts on error id
getcontact(db, context);
}
}

Android how to get clicked itemid from Listview and update another column value on this row

I am making small app. It has 2 listview on MainActivity.
DB is SQLLite and has tree cloumns id(int), person(text), status(text).
Firt listview will be show informations from DB with this query
select * from DB where status=B
And next ListView will show information where status=A.
lv1.status=b | lv2.status=a
Person 1 | Person 2
Person 3 | Person 4
When i click lv2 on item, value of clicked lv2 field 'status' must change to 'b'.
But I can not write right query for db.
public void changeUser(){
db = this.getWritableDatabase();
ContentValues values = new ContentValues();
values.put(KEY_STATUS, "B");
db.update(TABLE_ORDER, values, null, null);
db.close();
}
Thanks
Here is my code
lvB = (ListView)findViewById(R.id.lvB);
listClientB();
lvA = (ListView)findViewById(R.id.lvA);
listClientA();
lvA.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
User user = (User)adapterView.getAdapter().getItem(i);
int id = user.get_id();
if (user.getStatus().contains("A")){
dbHelper.changeUser();
}
Toast.makeText(getApplicationContext(), id + "-NUMBER id", Toast.LENGTH_LONG).show();
Log.d(String.valueOf(user.get_id()), "-NUMBER id");
listClientA();
Log.d(user.getStatus(), "Pressed");
}
});
}
private void listClientA(){
list = dbHelper.allUsersA();
klientStatusAdapter = new KlientStatusAdapter(MainActivity.this, list);
lvA.setAdapter(klientStatusAdapter);
lvA.setTextFilterEnabled(true);
}
private void listClientB(){
list = dbHelper.allUsersB();
klientStatusAdapter = new KlientStatusAdapter(MainActivity.this, list);
lvB.setAdapter(klientStatusAdapter);
lvB.setTextFilterEnabled(true);
}
Here is from DB
public List<User> allUsersA(){
db = this.getReadableDatabase();
List<User> users = new ArrayList<User>();
String s = "select * from " + TABLE_ORDER + " where status = 'A'";
Cursor cursor = db.rawQuery(s, null);
if (cursor.moveToFirst()){
do {
User user = new User();
user.set_id(Integer.parseInt(cursor.getString(0)));
user.setClientName(cursor.getString(1));
user.setCleintOrderedFood(cursor.getString(2));
user.setStatus(cursor.getString(3));
users.add(user);
}while (cursor.moveToNext());
}
db.close();
return users;
}
public List<User> allUsersB(){
db = this.getReadableDatabase();
List<User> users = new ArrayList<User>();
String s = "select * from " + TABLE_ORDER + " where status = 'B'";
Cursor cursor = db.rawQuery(s, null);
if (cursor.moveToFirst()){
do {
User user = new User();
user.set_id(Integer.parseInt(cursor.getString(0)));
user.setClientName(cursor.getString(1));
user.setCleintOrderedFood(cursor.getString(2));
user.setStatus(cursor.getString(3));
users.add(user);
}while (cursor.moveToNext());
}
db.close();
return users;
}
public void changeUser(){
db = this.getWritableDatabase();
ContentValues values = new ContentValues();
values.put(KEY_STATUS, "B");
db.update(TABLE_ORDER, values, null, null);
db.close();
}
Here is adapter
public class ClientStatusAdapter extends BaseAdapter{
LayoutInflater inflater;
Context context;
List<User> wordsList;
DbHelper dbHelper;
public ClientStatusAdapter(Context context1, List<User> wordsList) {
this.context = context1;
this.wordsList = wordsList;
inflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
dbHelper = new DbHelper(context);
}
#Override
public int getCount() {
return wordsList.size();
}
#Override
public Object getItem(int i) {
return wordsList.get(i);
}
#Override
public long getItemId(int i) {
return i;
}
#Override
public View getView(int i, View view, ViewGroup viewGroup) {
if (view == null){
view = inflater.inflate(R.layout.kliyent_status_adapter, null);
}
TextView txtIsmAdapter = (TextView)view.findViewById(R.id.txtIsmAdapter);
TextView txtOvqatAdapter = (TextView)view.findViewById(R.id.txtOvqatAdapter);
final User user = wordsList.get(i);
TextView txtCliyentNames = (TextView)view.findViewById(R.id.txtCliyentNames);
txtCliyentNames.setText(user.getClientName());
TextView txtCliyentOrderedFoood = (TextView)view.findViewById(R.id.txtCliyentOrderedFoood);
txtCliyentOrderedFoood.setText(user.getCleintOrderedFood());
TextView txtStatusAdapter = (TextView)view.findViewById(R.id.txtStatusAdapter);
txtStatusAdapter.setText(user.getStatus());
notifyDataSetChanged();
ImageView imgOn = (ImageView) view.findViewById(R.id.imgOn);
return view;
}
}
Here is entity User
public class User {
private int _id;
private String clientName;
private String cleintOrderedFood;
private String status = "A";
public User() {
}
public User(int _id, String clientName, String cleintOrderedFood) {
this._id = _id;
this.clientName = clientName;
this.cleintOrderedFood = cleintOrderedFood;
}
public User(int _id, String clientName, String cleintOrderedFood, String status) {
this._id = _id;
this.clientName = clientName;
this.cleintOrderedFood = cleintOrderedFood;
this.status = status;
}
public int get_id() {
return _id;
}
public void set_id(int _id) {
this._id = _id;
}
public String getClientName() {
return clientName;
}
public void setClientName(String clientName) {
this.clientName = clientName;
}
public String getCleintOrderedFood() {
return cleintOrderedFood;
}
public void setCleintOrderedFood(String cleintOrderedFood) {
this.cleintOrderedFood = cleintOrderedFood;
}
public String getStatus() {
return status;
}
public void setStatus(String status) {
this.status = status;
}
}

If you look closely at the SQLiteDatabase.update() method, you will see it is declared as
int update (String table,
ContentValues values,
String whereClause,
String[] whereArgs)
Note the last two parameters. These are how you select which rows to update. For example, you can specify to only update rows with a given id:
public void changeUser(int userId){
db = this.getWritableDatabase();
ContentValues values = new ContentValues();
values.put(KEY_STATUS, "B");
String whereClause = "_id = ?";
String where = new String[] {Integer.toString(userId)};
db.update(TABLE_ORDER, values, whereClause, where);
db.close();
}
Here I am assuming you use the conventional column name _id. Of course, you can change this to suit your needs if you have a different column name.
Note that you will now need to pass a parameter to changeUser(). However, you have not shown how nor where you currently call it, so I am unable to provide any advice how to change this.

Json data is not getting stored in Sqlite

I am using Recyclerview ,Here is Json file the insert query written in Json array though the json data is not stored in SQLite.When we destroy the app and again restart it will only show
blank rows and again press a button and it will show json data aftr emptyrow ie:after destroy data gets lost.Do help me thank you
public class Recyclerview extends AppCompatActivity {
private RecyclerView mRecyclerView;
CustomAdapter cu;
ArrayList<Employee> arr, arr1;
Toolbar toolbar;
TextView t1, t2;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.recyclerview);
toolbar = (Toolbar) findViewById(R.id.toolbar1);
setSupportActionBar(toolbar);
final RecyclerView rv = (RecyclerView) findViewById(R.id.rv);
rv.setHasFixedSize(true);
arr = new ArrayList<Employee>();
arr = InitializeData();
final LinearLayoutManager llm = new LinearLayoutManager(Recyclerview.this);
rv.setLayoutManager(llm);
rv.setHasFixedSize(true);
cu = new CustomAdapter(Recyclerview.this, arr);
rv.setAdapter(cu);
registerForContextMenu(rv);
final bank ban = new bank(Recyclerview.this);
ImageButton refresh = (ImageButton) findViewById(R.id.refresh);
refresh.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Toast.makeText(Recyclerview.this, "ok", Toast.LENGTH_LONG).show();
if (isNetworkAvailable()) {
String url = ConstantValues.BASE_URL;
RequestBody formBody = new FormBody.Builder()
.add("key1", "value1")
.add("key2", "value2")
.add("key3", "value3")
.build();
try {
post(url, formBody, new Callback() {
#Override
public void onFailure(Call call, IOException e) {
Log.e("JSONDemo", "IOException", e);
}
#Override
public void onResponse(final Call call, final Response response) throws IOException {
String JSON = response.body().string();
Log.e("res", " " + JSON);
try {
JSONObject jsonObj = new JSONObject(JSON);
JSONArray resultarr = jsonObj.getJSONArray("result");
final JSONArray resultarr1 = jsonObj.getJSONArray("result1");
ban.OpenDB();
ban.OpenDB();
for (int i = 0; i < resultarr1.length(); i++) {
Employee emp = new Employee();
JSONObject result1obj = resultarr1.getJSONObject(i);
String result1Id = result1obj.getString(ConstantValues.Bank_ID);
String result1NAME = result1obj.getString(ConstantValues.Bank_NAME);
Log.e("result", " " + result1Id);
Log.e("result", " " + result1NAME);
emp.setId(result1obj.getString(ConstantValues.Bank_ID));
emp.setName(result1obj.getString(ConstantValues.Bank_NAME));
arr.add(emp);
long l = 0;
l=ban.InsertQryForTabEmpData(ConstantValues.Bank_ID,ConstantValues.Bank_NAME);
}
ban.CloseDB();
runOnUiThread(new Runnable() {
#Override
public void run() {
cu.notifyDataSetChanged();
}
});
} catch (Exception e) {
Log.e("JSONDemo", "onResponse", e);
}
}
});
} catch (Exception e) {
Log.e("JSONDemo", "Post Exception", e);
}
} else {
Toast.makeText(Recyclerview.this, "Internet not available", Toast.LENGTH_LONG).show();
}
}
});
}
private ArrayList<Employee> InitializeData() {
ArrayList<Employee> arr_emp = new ArrayList<Employee>();
bank ban = new bank(Recyclerview.this);
long l = 0;
ban.OpenDB();
arr_emp = ban.AllSelectQryForTabEmpData1();
ban.CloseDB();
return arr_emp;
}
private boolean isNetworkAvailable() {
ConnectivityManager connectivityManager
= (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo activeNetworkInfo = connectivityManager.getActiveNetworkInfo();
return activeNetworkInfo != null && activeNetworkInfo.isConnected();
}
private final OkHttpClient client = new OkHttpClient();
Call post(String url, RequestBody formBody, Callback callback) throws IOException {
Request request = new Request.Builder()
.url(url)
.post(formBody)
.build();
Call call = client.newCall(request);
call.enqueue(callback);
return call;
}
}
It is the query of all SQLite:
public class bank {
private Context context;
private SQLiteDatabase SQLiteDb;
public bank(Context context){
this.context=context;
}
public static class DBHelper extends SQLiteOpenHelper{
public DBHelper(Context context) {
super(context, ConstantValues.DBName, null, 1);
}
#Override
public void onCreate(SQLiteDatabase db) {
db.execSQL(" create table if not exists " + ConstantValues.TabEmpData+"("
+ ConstantValues.Bank_ID + " text, "
+ ConstantValues.Bank_NAME + " text )");
}
#Override
public void onUpgrade(SQLiteDatabase db, int i, int i1) {
db.execSQL(" create table if not exists " + ConstantValues.TabEmpData+"("
+ ConstantValues.Bank_ID + " text, "
+ ConstantValues.Bank_NAME + " text )");
}
}
public void OpenDB() {
SQLiteDb = new DBHelper(context).getWritableDatabase();
}
public void CloseDB() {
if (SQLiteDb.isOpen()) {
SQLiteDb.close();
}
}
public long InsertQryForTabEmpData(String ID, String NAME) {
ContentValues cv = new ContentValues();
cv.put(ConstantValues.Bank_ID, ID);
cv.put(ConstantValues.Bank_NAME, NAME);
long l = SQLiteDb.insert(ConstantValues.TabEmpData, null, cv);
return l;
}
public long UpdateQryForTabEmpData(String ID
, String NAME
) {
ContentValues cv = new ContentValues();
cv.put(ConstantValues.Bank_ID, ID);
cv.put(ConstantValues.Bank_NAME, NAME);
long l = SQLiteDb.update(ConstantValues.TabEmpData, cv, ConstantValues.Bank_ID+ "=" + ID, null);
return l;
}
public long DeleteQryForTabEmpData(String ID) {
long l = SQLiteDb.delete(ConstantValues.TabEmpData, ConstantValues.Bank_ID+ "=" + ID, null);
return l;
}
public ArrayList SelectQryForTabEmpData(String ID) {
ArrayList<String> data = new ArrayList();
String[] arg = {
"ID"
, "NAME"
};
String selection = " ID= " + ID;
String QRY = " SELECT ID,NAME FROM TabEmpData WHERE ID = " + ID;// +" AND EmpFName = 'test' grup by empid,fname,lastname having Empsalary > = 2000 order by fname asc,salry desc limit 100";
Cursor cursor = SQLiteDb.rawQuery(QRY, null);//
SQLiteDb.query(ConstantValues.TabEmpData, arg, selection, null, null, null, null, null);
while (cursor.moveToNext()) {
data.add(0, cursor.getString(cursor.getColumnIndex(ConstantValues.Bank_ID)));
data.add(1, cursor.getString(cursor.getColumnIndex(ConstantValues.Bank_NAME)));
}
cursor.close();
return data;
}
public ArrayList AllSelectQryForTabEmpData1() {
ArrayList<Employee> data = new ArrayList();
Cursor cursor = SQLiteDb.query(ConstantValues.TabEmpData, null, null, null, null, null, null, null);
while (cursor.moveToNext()) {
String id = cursor.getString(cursor.getColumnIndex(ConstantValues.Bank_ID));
String name = cursor.getString(cursor.getColumnIndex(ConstantValues.Bank_NAME));
data.add(new Employee(id, name));
}
cursor.close();
return data;
}
}
Its my Custom Adapter:
public class CustomAdapter extends RecyclerView.Adapter<CustomAdapter.EmpDataViewHolder> {
final bank ban = new bank(CustomAdapter.this.context);
private ArrayList<Employee> arr,filterlist;
private Context context;
public CustomAdapter(Context context, ArrayList<Employee> arr) {
this.arr=arr;
this.context=context;
Toast.makeText(context,""+arr.size(),Toast.LENGTH_LONG).show();
}
#Override
public EmpDataViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View v = LayoutInflater.from(context).inflate(R.layout.cardview, parent, false);
EmpDataViewHolder edvh = new EmpDataViewHolder(v);
return edvh;
}
#Override
public void onBindViewHolder(EmpDataViewHolder holder, int position) {
Employee emp=arr.get(position) ;
holder.id.setText(emp.getId());
holder.name.setText(emp.getName());
holder.cv.setTag(R.string.KeyForCV,position);
}
#Override
public int getItemCount() {
return arr.size();
}
public class EmpDataViewHolder extends RecyclerView.ViewHolder {
CardView cv;
TextView id;
TextView name;
public EmpDataViewHolder(View itemView) {
super(itemView);
cv= (CardView) itemView.findViewById(R.id.cv);
id= (TextView) itemView.findViewById(R.id.id);
name= (TextView) itemView.findViewById(R.id.name);
}
}
}
Do help me i want to get rid out of this problem thank you in advance

Check Row_id in database with other value in RecyclerView Adapter

This is structure of my json respose :
{
"data": [
{
"id": 23,
"title": "this is title",
"description": " this is desc",
"date": "21/2/16",
"authorname": "john smith",
"authorpic": "http://xtryz.com/users/1462862047com.yahoo.mobile.client.android.yahoo_128x128.png",
"filename": "1463770591.MP4",
"downloadlink": "http://xyrgz.com/download.zip",
"downloadcnt": "24"
},
...
]
And with clicking one Buton in each row of RecyclerView I save that json row In the Database . Know for some work I need to know is this json row exist in the Database or no ? for doing this work , I Want to use the id in the database and id of the json . and if id of the database same to id of the json , doing some work and else .
This is the QuestionDatabaseAdapter :
public class QuestionDatabaseAdapter {
private Context context;
private SQLiteOpenHelper sqLiteOpenHelper;
private static final int DATABASE_VERSION = 1;
//private SQLiteDatabase database = null;
public QuestionDatabaseAdapter(Context context) {
this.context = context;
sqLiteOpenHelper = new SQLiteOpenHelper(context, "database.db", null, DATABASE_VERSION) {
#Override
public void onCreate(SQLiteDatabase db) {
String sql = "CREATE TABLE tbl_questions ( id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL UNIQUE, question_id VARCHAR( 255 ) NOT NULL , title VARCHAR( 255 ) NOT NULL, [desc] TEXT NOT NULL, Date VARCHAR( 50 ) NOT NULL, authorName VARCHAR( 255 ) NOT NULL , authorPic VARCHAR( 255 ) NOT NULL, downLink VARCHAR( 255 ) NOT NULL )";
db.execSQL(sql);
}
#Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
}
};
}
//================== SAVE QUESTION IN DATABASE ==========================
public long saveQuestion(ModelQuestion modelQuestion) {
String question_id = modelQuestion.getQuestionId();
String title = modelQuestion.getQuestionTitle();
String desc = modelQuestion.getQuestionDesc();
String date = modelQuestion.getQuestionDate();
String authorName = modelQuestion.getQuestionAuthorName();
String authorPic = modelQuestion.getQuestionAuthorPic();
String downloadLink = modelQuestion.getQuestionDownLink();
SQLiteDatabase database = null;
long id = -1;
try {
ContentValues values = new ContentValues();
values.put("question_id", question_id);
values.put("title", title);
values.put("desc", desc);
values.put("date", date);
values.put("authorName", authorName);
values.put("authorPic", authorPic);
values.put("downLink", downloadLink);
database = sqLiteOpenHelper.getWritableDatabase();
id = database.insert("tbl_questions", null, values);
} catch (Exception ex) {
Log.i("DATABASE SAVE EX", ex.getMessage());
} finally {
if (database != null && database.isOpen()) {
database.close();
}
}
return id;
}
//=================== READ ALL QUESTION IN DATABASE=========================
public ArrayList<ModelQuestion> readAllQuestions() {
ArrayList<ModelQuestion> questions = null;
String[] columns = new String[]{"*"};
String selection = null;
String[] selectionArgs = null;
String groupBy = null;
String having = null;
String orderBy = null;
String limit = null;
String favorite = null;
SQLiteDatabase database = null;
try {
database = sqLiteOpenHelper.getReadableDatabase();
Cursor cursor = database.query("tbl_questions", columns, selection, selectionArgs, groupBy, having, orderBy, limit);
if (cursor != null && cursor.moveToFirst()) {
questions = new ArrayList<ModelQuestion>();
int indexQuestionId = 0;
int indexTitle = 1;
int indexDesc = 2;
int indexDate = 3;
int indexAuthorName = 4;
int indexAuthorPic = 5;
int indexDownloadLink = 6;
int indexFavorite = 7;
do {
String questionId = cursor.getString(indexQuestionId);
String questionTitle = cursor.getString(indexTitle);
String questionDesc = cursor.getString(indexDesc);
String questionDate = cursor.getString(indexDate);
String questionAuthorName = cursor.getString(indexAuthorName);
String questionAuthorPic = cursor.getString(indexAuthorPic);
String questionDownloadLink = cursor.getString(indexDownloadLink);
ModelQuestion question = new ModelQuestion();
question.setQuestionId(questionId);
question.setQuestionTitle(questionTitle);
question.setQuestionDesc(questionDesc);
question.setQuestionDate(questionDate);
question.setQuestionAuthorName(questionAuthorName);
question.setQuestionAuthorPic(questionAuthorPic);
question.setQuestionDownLink(questionDownloadLink);
questions.add(question);
} while (cursor.moveToNext());
}
} catch (Exception ex) {
Log.i("DATABASE READ ALL EX", ex.getMessage());
} finally {
if (database != null && database.isOpen()) {
database.close();
}
}
return questions;
}
//=================== DELETE ONE QUESTION IN DATABASE=========================
public int deletePerson(long id) {
int noOfDeletedRecords = 0;
String whereClause = "id=?";
String[] whereArgs = new String[]{String.valueOf(id)};
SQLiteDatabase database = null;
try {
database = sqLiteOpenHelper.getWritableDatabase();
noOfDeletedRecords = database.delete("tbl_questions", whereClause, whereArgs);
} catch (Exception ex) {
Log.i("DATABASE DELETE EX", ex.getMessage());
} finally {
if (database != null && database.isOpen()) {
database.close();
}
}
return noOfDeletedRecords;
}
}
And this is The adapterRecyclerQuestion :
public class AdapterRecyclerQuestion extends RecyclerView.Adapter<AdapterRecyclerQuestion.ViewHolder> {
private Context context;
private ArrayList<ModelQuestion> questionha;
//constructor
public AdapterRecyclerQuestion(Context context, ArrayList<ModelQuestion> questionha) {
this.context = context;
this.questionha = questionha;
}
//viewholder
public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
private TextView txtTitle;
private TextView txtDesc;
private TextView txtCntDown;
private ImageView imgAuthorPic;
private TextView txtAuthorName;
private TextView txtDate;
private Button btnDownload;
private ImageView imgAddFav;
public ViewHolder(View itemView) {
super(itemView);
itemView.setOnClickListener(this);
txtTitle = (TextView) itemView.findViewById(R.id.txt_title_question);
txtDesc = (TextView) itemView.findViewById(R.id.txt_desc_question);
txtCntDown = (TextView) itemView.findViewById(R.id.txt_cnt_down_question_dy);
imgAuthorPic = (ImageView) itemView.findViewById(R.id.img_author_pic_question);
txtAuthorName = (TextView) itemView.findViewById(R.id.txt_author_name_question);
txtDate = (TextView) itemView.findViewById(R.id.txt_date_question);
btnDownload = (Button) itemView.findViewById(R.id.btn_down_question);
imgAddFav = (ImageView) itemView.findViewById(R.id.img_add_to_fav);
}
#Override
public void onClick(View v) {
Toast.makeText(v.getContext(), "Hello" + txtTitle.getText(), Toast.LENGTH_SHORT).show();
}
}
//oncreateviewholder
#Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.question_row, parent, false);
return new ViewHolder(view);
}
//onbindviewholder
#Override
public void onBindViewHolder(final ViewHolder holder, final int position) {
QuestionDatabaseAdapter questionDatabaseAdapter = new QuestionDatabaseAdapter(holder.itemView.getContext());
questionDatabaseAdapter.readAllQuestions();
holder.txtTitle.setText(questionha.get(position).getQuestionTitle());
holder.txtDesc.setText(questionha.get(position).getQuestionDesc());
holder.txtCntDown.setText(questionha.get(position).getQuestionDownCnt());
holder.txtAuthorName.setText(questionha.get(position).getQuestionAuthorName());
Glide.with(holder.itemView.getContext()).load(questionha.get(position).getQuestionAuthorPic()).into(holder.imgAuthorPic);
holder.txtDate.setText(questionha.get(position).getQuestionDate());
//============= IMG ADD TO FAV ON CLICK LISTENER =========================
holder.imgAddFav.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
QuestionDatabaseAdapter databaseAdapter = new QuestionDatabaseAdapter(v.getContext());
ModelQuestion question = new ModelQuestion();
question.setQuestionId(questionha.get(position).getQuestionId());
question.setQuestionTitle(questionha.get(position).getQuestionTitle());
question.setQuestionDesc(questionha.get(position).getQuestionDesc());
question.setQuestionDate(questionha.get(position).getQuestionDate());
question.setQuestionAuthorName(questionha.get(position).getQuestionAuthorName());
question.setQuestionAuthorPic(questionha.get(position).getQuestionAuthorPic());
question.setQuestionDownLink(questionha.get(position).getQuestionDownLink());
databaseAdapter.saveQuestion(question);
Toast.makeText(v.getContext(), "اضافه شد", Toast.LENGTH_SHORT).show();
}
});
//=============BTN DOWNLOAD CLICK LISTENER =========================
holder.btnDownload.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
DownloadManager downloadManager = (DownloadManager) context.getSystemService(Context.DOWNLOAD_SERVICE);
DownloadManager.Request request = new DownloadManager.Request(Uri.parse(questionha.get(position).getQuestionDownLink()));
request.setTitle(questionha.get(position).getQuestionTitle());
request.setDescription("در حال دانلود");
request.setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS, questionha.get(position).getQuestionDownFileName());
long enqueueId = downloadManager.enqueue(request);
}
});
}
//getitemcount
#Override
public int getItemCount() {
return questionha.size();
}
}
And this is Database Structure :
(question_id is the id of question)
Now i need to compare id of database and id of the json in adapter . but i don't know how can i do this .

private ArrayList<ModelQuestion> questionha;
private ArrayList<ModelQuestion> jsonArrList;
//pass your json arraylist too in constructor from your main activity
public AdapterRecyclerQuestion(Context context, ArrayList<ModelQuestion> questionha,ArrayList<ModelQuestion> jsonArrList) {
this.context = context;
this.questionha = questionha;
this.jsonArrList = jsonArrList;
}
#Override
public void onBindViewHolder(final ViewHolder holder, final int position) {
for(int i=0;i<jsonArrList.size();i++)
{
//Check your id here
if(jsonArrList.get(i).getId().equalsIgnoreCase(questionha.get(position).getId()))
}
}

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