can I Serialize a text from my database to a text view? I'm trying to do it but it still don't get the userID from my database and It just prints Large Text as is what i dragged inside my app. Is it possible? Here is my code Thanks.
ownerhome.class
package com.example.kun.carkila;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.util.Log;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.widget.ListView;
import android.widget.TextView;
public class ownerhome extends AppCompatActivity {
final String TAG = this.getClass().getName();
int from_Where_I_Am_Coming = 0;
SharedPreferences pref;
SharedPreferences.Editor editor;
ListView lvPosts;
TextView userID1;
String userID;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_ownerhome);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
User User = (User)getIntent().getSerializableExtra("user");
userID1 = (TextView) findViewById(R.id.tvUserID);
pref = getSharedPreferences("Login.conf", Context.MODE_PRIVATE);
Log.d(TAG, pref.getString("username", ""));
Log.d(TAG, pref.getString("password", ""));
FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Intent in = new Intent(ownerhome.this, InsertActivity.class);
startActivity(in);
}
});
try {
if (User != null) {
userID1.setText(User.userID);
}
}catch (Exception e){
System.out.println("Error in details " + e.toString());
}
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater findMenuItems = getMenuInflater();
findMenuItems.inflate(R.menu.menu_main, menu);
return super.onCreateOptionsMenu(menu);
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
if(id == R.id.action_logout){
editor = pref.edit();
editor.clear();
editor.commit();
Intent in = new Intent(ownerhome.this, MainActivity.class);
startActivity(in);
finish();
}
return super.onOptionsItemSelected(item);
}
}
User.class
package com.example.kun.carkila;
import com.google.gson.annotations.SerializedName;
public class User {
#SerializedName("userID")
public int userID;
}
Thanks guys for the help :)
Related
Hello friends i am using seekbarpefernce library "com.yokkomi:seekbar-preference:1.0 " in my project the problem is that when i try to get value from this seekbar its always give me default value which i set in getting value from sharedperfernce please help me how to get the seekbar value when its changed here is my code geting sharedperfe value inside speakout method please look below speakout method in my code!
library link here:https://github.com/ghkim3221/SeekBarPreference
My perfernce sacreen:
<?xml version="1.0" encoding="utf-8"?>
<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">
<SwitchPreference
android:defaultValue="false"
android:key="autospeak"
android:title="Auto Speak"
android:summary="Turn on/off auto verse read"/>
<com.yokkomi.commons.preference.seekbar.SeekBarPreference
android:defaultValue="11"
android:dialogTitle="Verse Reading Speed"
android:key="versespeed"
android:summary="Adjust verse reading speed"
android:title="Verse Speed"
app:explain="Drag it left or right"
app:maxValue="20"
app:padding="3"/>
<com.yokkomi.commons.preference.seekbar.SeekBarPreference
android:defaultValue="8"
android:dialogTitle="Voice Picth Settings"
android:key="voicepitch"
android:summary="Adjust verse reading pitch"
android:title="Voice Pitch"
app:explain="Drag it left or right"
app:maxValue="20"
app:padding="3"/>
<SwitchPreference
android:defaultValue="false"
android:key="switchmode"
android:title="Turn on Dark Mode"
android:summary="Reading in night mode"/>
package bible.swordof.God;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.graphics.Color;
import android.os.Handler;
import android.speech.tts.TextToSpeech;
import android.support.annotation.NonNull;
import android.support.design.widget.NavigationView;
import android.support.v4.app.Fragment;
import android.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarDrawerToggle;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.Toolbar;
import android.util.Log;
import android.view.MenuItem;
import android.view.View;
import android.widget.Adapter;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.BaseAdapter;
import android.widget.GridView;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.RelativeLayout;
import android.widget.TextView;
import android.widget.Toast;
import com.yokkomi.commons.preference.seekbar.SeekBarPreference;
import java.util.ArrayList;
import java.util.Locale;
import es.dmoral.toasty.Toasty;
public class ALLVERSE extends AppCompatActivity implements NavigationView.OnNavigationItemSelectedListener,TextToSpeech.OnInitListener {
private ListView mylistview;
private ArrayList<String>versenumber;
private ArrayList<String>verselist;
private ArrayList<String>id;
private ArrayList<String>refernce;
private DatabaseHelper mDBHelper;
private SQLiteDatabase mDb;
private int booknumber;
private int chapternumber;
private String bookname;
public int versepos;
private TextView booknametitle;
TextToSpeech textToSpeech;
private static SharedPreferences sharedPreferences;
int result;
private static final int MY_DATA_CHECK_CODE = 0;
private FullverseAdopter fullverseAdopter;
RelativeLayout linearLayout;
#Override
protected void onDestroy() {
if (textToSpeech!= null) {
textToSpeech.stop();
textToSpeech.shutdown();
}
super.onDestroy();
}
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_allverse);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
booknametitle = findViewById(R.id.bookname);
linearLayout=findViewById(R.id.color);
final Intent mIntent = getIntent();
booknumber = mIntent.getIntExtra("Boooknumber", 0);
chapternumber = mIntent.getIntExtra("Chapternumber", 0);
bookname = mIntent.getStringExtra("Bookname");
versepos=mIntent.getIntExtra("versenumber",1);
SharedPreferences sharedPreferences=this.getSharedPreferences("DATA",MODE_PRIVATE);
SharedPreferences.Editor editor=sharedPreferences.edit();
editor.putInt("versenumber",versepos);
editor.commit();
booknametitle.setText(bookname.toString() + " " + chapternumber);
setSupportActionBar(toolbar);
toolbar.setTitle("ALL VERSE");
textToSpeech=new TextToSpeech(this,this);
setSupportActionBar(toolbar);
if (getSupportActionBar() != null) {
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setDisplayShowHomeEnabled(true);
}
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
drawer.addDrawerListener(toggle);
toggle.syncState();
NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
setData();
mylistview = findViewById(R.id.mylistview);
BaseAdapter baseAdapter = new BaseAdopter(this, versenumber, id, verselist, refernce);
mylistview.setAdapter(baseAdapter);
final Handler handler = new Handler();
handler.postDelayed(new Runnable() {
#Override
public void run() {
if(DefaultSettings.autospeak(ALLVERSE.this)){
speakOut(verselist.get(versepos-1));
}
//speak after 1000ms
}
}, 1000);
mylistview.setSelection(Integer.valueOf(versepos)-1);
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// handle arrow click here
if (item.getItemId() == android.R.id.home) {
onBackPressed();
}
return super.onOptionsItemSelected(item);
}
private void setData() {
versenumber=new ArrayList<>();
verselist=new ArrayList<>();
refernce=new ArrayList<>();
id=new ArrayList<>();
mDBHelper = new DatabaseHelper(this);
mDb = mDBHelper.getReadableDatabase();
Cursor cursor = mDb.rawQuery("SELECT id, v, t from t_kjv where b="+booknumber+" AND c="+chapternumber+";", new String[]{});
if(cursor!=null && cursor.getCount() > 0)
{ if (cursor.moveToFirst())
{
do {
id.add(cursor.getString(0));
versenumber.add(cursor.getString(1));
verselist.add(cursor.getString(2));
refernce.add(bookname+" "+chapternumber);
}
while (cursor.moveToNext());
}
}
}
#Override
public boolean onNavigationItemSelected(MenuItem item) {
// Handle navigation view item clicks here.
Fragment fragment;
int id = item.getItemId();
if (id == R.id.home) {
Intent intent=new Intent(this,MainActivity.class);
startActivity(intent);
} else if (id == R.id.favoruite)
{ Intent intent=new Intent(this,Favourite.class);
startActivity(intent);
} else if (id == R.id.setting) {
} else if (id == R.id.nav_share) {
} else if (id == R.id.nav_send) {
}
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
drawer.closeDrawer(GravityCompat.START);
return true;
}
// here is getingperfernces always return 11 which i set as default value
private void speakOut(String text) {
sharedPreferences=getSharedPreferences("versespeed",MODE_PRIVATE);
float speed=(float)sharedPreferences.getInt("versespeed",11)/50;
if(speed<0.1)speed=0.1f;
/* float pitch=(float)sharedPreferences.getInt("voicepitch",11)/50;
if(pitch<0.1)pitch=0.1f;
textToSpeech.setPitch(pitch);*/
textToSpeech.setSpeechRate(speed);
textToSpeech.speak(text, TextToSpeech.QUEUE_FLUSH, null);
Toast.makeText(this, ""+speed, Toast.LENGTH_SHORT).show();
}
#Override
public void onInit(int status) {
if (status == TextToSpeech.SUCCESS) {
int result = textToSpeech.setLanguage(Locale.US);
// tts.setPitch(5); // set pitch level
// tts.setSpeechRate(2); // set speech speed rate
if (result == TextToSpeech.LANG_MISSING_DATA
|| result == TextToSpeech.LANG_NOT_SUPPORTED) {
Log.e("TTS", "Language is not supported");
} else {
}
} else {
Log.e("TTS", "Initilization Failed");
}
}
}
I'm the developer of SeekBarPreference.
The SeekBarPreference is currently inoperative and not maintained.
I'm really sorry, and you'd better find another library.
I came here with another problem, this time it concerns Android app.
I've made an app with Login activity (no NavigationView) which move us after login to Home activity where is NavigationView. User data is saved in SharedPreferences, I'm using Constants class.
My problem is that I can't setText on Home activity using SharedPreferences, but it working on Login activity (email address is inserted in EditText).
Here is my code:
Login.java
package com.example.appname;
import android.app.Fragment;
import android.app.FragmentTransaction;
import android.content.Intent;
import android.content.SharedPreferences;
import android.graphics.Color;
import android.support.design.widget.CoordinatorLayout;
import android.support.design.widget.Snackbar;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.AppCompatButton;
import android.util.Log;
import android.view.View;
import android.widget.EditText;
import android.widget.ProgressBar;
import android.widget.TextView;
import com.example.appname.models.ServerRequest;
import com.example.appname.models.ServerResponse;
import com.example.appname.models.User;
import retrofit2.Call;
import retrofit2.Callback;
import retrofit2.Retrofit;
import retrofit2.converter.gson.GsonConverterFactory;
public class Login extends AppCompatActivity {
private CoordinatorLayout coordinatorLayout;
private AppCompatButton btn_login;
private EditText et_email,et_password;
private TextView tv_register;
private ProgressBar progress;
private SharedPreferences pref;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login);
coordinatorLayout = (CoordinatorLayout) findViewById(R.id.coordinatorLayout);
pref = getPreferences(0);
btn_login = (AppCompatButton)findViewById(R.id.btn_login);
tv_register = (TextView)findViewById(R.id.tv_register);
et_email = (EditText)findViewById(R.id.et_email);
et_email.setText(pref.getString(Constants.EMAIL, ""));
et_password = (EditText)findViewById(R.id.et_password);
progress = (ProgressBar)findViewById(R.id.progress);
btn_login.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
String email = et_email.getText().toString();
String password = et_password.getText().toString();
if(!email.isEmpty() && !password.isEmpty()) {
progress.setVisibility(View.VISIBLE);
loginProcess(email,password);
} else {
Snackbar snackbar = Snackbar
.make(coordinatorLayout, R.string.empty_fields, Snackbar.LENGTH_LONG);
View sbView = snackbar.getView();
TextView textView = (TextView) sbView.findViewById(android.support.design.R.id.snackbar_text);
textView.setTextColor(Color.GREEN);
snackbar.show();
}
}
});
tv_register.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Intent intent = new Intent(getApplicationContext(), Register.class);
startActivity(intent);
finish();
}
});
}
private void loginProcess(String email,String password){
Retrofit retrofit = new Retrofit.Builder()
.baseUrl(Constants.BASE_URL)
.addConverterFactory(GsonConverterFactory.create())
.build();
RequestInterface requestInterface = retrofit.create(RequestInterface.class);
User user = new User();
user.setEmail(email);
user.setPassword(password);
ServerRequest request = new ServerRequest();
request.setOperation(Constants.LOGIN_OPERATION);
request.setUser(user);
Call<ServerResponse> response = requestInterface.operation(request);
response.enqueue(new Callback<ServerResponse>() {
#Override
public void onResponse(Call<ServerResponse> call, retrofit2.Response<ServerResponse> response) {
ServerResponse resp = response.body();
Snackbar.make(coordinatorLayout, resp.getMessage(), Snackbar.LENGTH_LONG).show();
if(resp.getResult().equals(Constants.SUCCESS)){
SharedPreferences.Editor editor = pref.edit();
editor.putBoolean(Constants.IS_LOGGED_IN,true);
editor.putString(Constants.EMAIL,resp.getUser().getEmail());
editor.putString(Constants.NAME,resp.getUser().getName());
editor.putString(Constants.UNIQUE_ID,resp.getUser().getUnique_id());
editor.putString(Constants.POINTS,resp.getUser().getPoints());
editor.apply();
goToHome();
}
progress.setVisibility(View.INVISIBLE);
}
#Override
public void onFailure(Call<ServerResponse> call, Throwable t) {
progress.setVisibility(View.INVISIBLE);
Log.d(Constants.TAG,"failed");
Snackbar.make(coordinatorLayout, t.getLocalizedMessage(), Snackbar.LENGTH_LONG).show();
}
});
}
private void goToHome(){
Intent intent = new Intent(getApplicationContext(), Home.class);
startActivity(intent);
}
}
Home.java
package com.examle.appname;
import android.app.ActivityOptions;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.support.design.internal.NavigationMenuPresenter;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.NavigationView;
import android.support.design.widget.Snackbar;
import android.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarDrawerToggle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
import android.view.View;
import android.view.MenuItem;
import android.widget.TextView;
import android.widget.Toast;
public class Home extends AppCompatActivity implements
NavigationView.OnNavigationItemSelectedListener {
private DrawerLayout drawerLayout;
private Toolbar toolbar;
private SharedPreferences pref;
private TextView tvname, tvpoints;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_home);
pref = getPreferences(0);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
tvname = (TextView)findViewById(R.id.tv_name);
tvpoints = (TextView)findViewById(R.id.tv_points);
tvname.setText(pref.getString(Constants.NAME, ""));
tvpoints.setText(pref.getString(Constants.POINTS, "") +R.string.act_points);
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
this, drawer, toolbar, R.string.drawer_open, R.string.drawer_close);
drawer.setDrawerListener(toggle);
toggle.syncState();
NavigationView navigationView = (NavigationView) findViewById(R.id.nvView);
navigationView.setNavigationItemSelectedListener((NavigationView.OnNavigationItemSelectedListener) this);
View headerView = navigationView.getHeaderView(0);
TextView tvemail = (TextView) headerView.findViewById(R.id.tv_email);
tvemail.setText(pref.getString(Constants.EMAIL, ""));
}
#Override
public void onBackPressed() {
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
if (drawer.isDrawerOpen(GravityCompat.START)) {
drawer.closeDrawer(GravityCompat.START);
} else {
super.onBackPressed();
}
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
#SuppressWarnings("StatementWithEmptyBody")
public boolean onNavigationItemSelected(MenuItem item) {
int id=item.getItemId();
switch (id){
case R.id.navigation_home:
Intent h= new Intent(Home.this,Home.class);
startActivity(h);
break;
case R.id.navigation_showall:
Intent i= new Intent(Home.this,ShowAllUsers.class);
startActivity(i);
break;
case R.id.navigation_about:
Intent g= new Intent(Home.this,About.class);
startActivity(g);
break;
case R.id.navigation_settings:
Intent s= new Intent(Home.this,AccountSettings.class);
startActivity(s);
case R.id.navigation_support:
Intent t= new Intent(Home.this,Support.class);
startActivity(t);
break;
}
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
drawer.closeDrawer(GravityCompat.START);
return true;
}
}
Try this way
SharedPreferences sharedpreferences = getSharedPreferences(MyPREFERENCES, Context.MODE_PRIVATE);
if (sharedpreferences.contains(Constants.NAME))
{
tvname.setText(sharedpreferences.getString(Constants.NAME, ""));
}
Use getSharedPreferences instead of this getPreferences
Because you are using two different instance of the SharedPreference in different activity use single instance. for more info check - https://stackoverflow.com/a/11567825/3912847
I am pretty new to this whole android development but I am looking to create a simple android app making use of a sql database, cardViews and a RecycleView.
The app I have so far works but I am trying to add a button to the DetailedActivity which will allow me to remove the entry from the database.
The desired workflow would be:
Get Data
Select a CardView
Click New Button (will be
delete)
Go back to CardView, Remove entry on which the button has
been pressed and populate the CardView.
RecyclerAdapter.java
package com.example.prabhu.databasedemo;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import android.widget.Toast;
import java.util.ArrayList;
import java.util.List;
public class RecyclerAdapter extends RecyclerView.Adapter<RecyclerAdapter.ViewHolder> {
static List<DatabaseModel> dbList;
static Context context;
RecyclerAdapter(Context context, List<DatabaseModel> dbList ){
this.dbList = new ArrayList<DatabaseModel>();
this.context = context;
this.dbList = dbList;
}
#Override
public RecyclerAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View itemLayoutView = LayoutInflater.from(parent.getContext()).inflate(
R.layout.item_row, null);
// create ViewHolder
ViewHolder viewHolder = new ViewHolder(itemLayoutView);
return viewHolder;
}
#Override
public void onBindViewHolder(RecyclerAdapter.ViewHolder holder, int position) {
holder.name.setText(dbList.get(position).getName());
holder.email.setText(dbList.get(position).getEmail());
}
#Override
public int getItemCount() {
return dbList.size();
}
public static class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
public TextView name,email;
public ViewHolder(View itemLayoutView) {
super(itemLayoutView);
name = (TextView) itemLayoutView
.findViewById(R.id.rvname);
email = (TextView)itemLayoutView.findViewById(R.id.rvemail);
itemLayoutView.setOnClickListener(this);
}
#Override
public void onClick(View v) {
Intent intent = new Intent(context,DetailsActivity.class);
Bundle extras = new Bundle();
extras.putInt("position",getAdapterPosition());
intent.putExtras(extras);
/*
int i=getAdapterPosition();
intent.putExtra("position", getAdapterPosition());*/
context.startActivity(intent);
Toast.makeText(RecyclerAdapter.context, "you have clicked Row " + getAdapterPosition(), Toast.LENGTH_SHORT).show();
}
}
}
DatabaseHelper.java
package com.example.prabhu.databasedemo;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import android.util.Log;
import android.widget.Toast;
import java.util.ArrayList;
import java.util.List;
public class DatabaseHelpher extends SQLiteOpenHelper {
private static final String DATABASE_NAME="student";
private static final int DATABASE_VERSION = 1;
private static final String STUDENT_TABLE = "stureg";
private static final String STU_TABLE = "create table "+STUDENT_TABLE +"(name TEXT,email TEXT primary key,roll TEXT,address TEXT,branch TEXT)";
Context context;
public DatabaseHelpher(Context context) {
super(context, DATABASE_NAME, null, DATABASE_VERSION);
this.context = context;
}
#Override
public void onCreate(SQLiteDatabase db) {
db.execSQL(STU_TABLE);
}
#Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
db.execSQL("DROP TABLE IF EXISTS " + STUDENT_TABLE);
// Create tables again
onCreate(db);
}
/* Insert into database*/
public void insertIntoDB(String name,String email,String roll,String address,String branch){
Log.d("insert", "before insert");
// 1. get reference to writable DB
SQLiteDatabase db = this.getWritableDatabase();
// 2. create ContentValues to add key "column"/value
ContentValues values = new ContentValues();
values.put("name", name);
values.put("email", email);
values.put("roll", roll);
values.put("address", address);
values.put("branch", branch);
// 3. insert
db.insert(STUDENT_TABLE, null, values);
// 4. close
db.close();
Toast.makeText(context, "insert value", Toast.LENGTH_SHORT);
Log.i("insert into DB", "After insert");
}
/* Retrive data from database */
public List<DatabaseModel> getDataFromDB(){
List<DatabaseModel> modelList = new ArrayList<DatabaseModel>();
String query = "select * from "+STUDENT_TABLE;
SQLiteDatabase db = this.getWritableDatabase();
Cursor cursor = db.rawQuery(query,null);
if (cursor.moveToFirst()){
do {
DatabaseModel model = new DatabaseModel();
model.setName(cursor.getString(0));
model.setEmail(cursor.getString(1));
model.setRoll(cursor.getString(2));
model.setAddress(cursor.getString(3));
model.setBranch(cursor.getString(4));
modelList.add(model);
}while (cursor.moveToNext());
}
Log.d("student data", modelList.toString());
return modelList;
}
/*delete a row from database*/
public void deleteARow(String email){
SQLiteDatabase db= this.getWritableDatabase();
db.delete(STUDENT_TABLE, "email" + " = ?", new String[] { email });
db.close();
}
}
DatabaseModel.java
package com.example.prabhu.databasedemo;
public class DatabaseModel {
private String name;
private String roll;
private String address;
private String branch;
private String email;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getRoll() {
return roll;
}
public void setRoll(String roll) {
this.roll = roll;
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
public String getBranch() {
return branch;
}
public void setBranch(String branch) {
this.branch = branch;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
}
MainActivity.java
package com.example.prabhu.databasedemo;
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
import java.util.ArrayList;
import java.util.List;
public class MainActivity extends AppCompatActivity {
EditText etName,etRoll,etAddress,etBranch,etEmail;
Button btnSubmit,btngetdata;
DatabaseHelpher helpher;
List<DatabaseModel> dbList;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
dbList= new ArrayList<DatabaseModel>();
etName = (EditText)findViewById(R.id.etName);
etRoll = (EditText)findViewById(R.id.etRoll);
etAddress =(EditText)findViewById(R.id.etAddress);
etBranch = (EditText)findViewById(R.id.etBranch);
etEmail = (EditText)findViewById(R.id.etEmail);
btnSubmit =(Button)findViewById(R.id.btnSubmit);
btngetdata =(Button)findViewById(R.id.btngetdata);
btngetdata.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
startActivity(new Intent(MainActivity.this, SecondActivity.class));
// startActivity(new Intent(MainActivity.this, DetailsActivity.class));
}
});
btnSubmit.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
String name=etName.getText().toString();
String email=etEmail.getText().toString();
String roll=etRoll.getText().toString();
String address=etAddress.getText().toString();
String branch=etBranch.getText().toString();
if(name.equals("") || email.equals("") || roll.equals("") ||address.equals("")||branch.equals("")){
Toast.makeText(MainActivity.this,"Please fill all the fields",Toast.LENGTH_SHORT).show();
}else {
helpher = new DatabaseHelpher(MainActivity.this);
helpher.insertIntoDB(name, email, roll, address, branch);
}
etName.setText("");
etRoll.setText("");
etAddress.setText("");
etBranch.setText("");
etEmail.setText("");
Toast.makeText(MainActivity.this, "insert value", Toast.LENGTH_SHORT);
}
});
}
}
SecondActivity.java
package com.example.prabhu.databasedemo;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
import android.view.MenuItem;
import java.util.ArrayList;
import java.util.List;
public class SecondActivity extends AppCompatActivity {
DatabaseHelpher helpher;
List<DatabaseModel> dbList;
RecyclerView mRecyclerView;
private RecyclerView.Adapter mAdapter;
private RecyclerView.LayoutManager mLayoutManager;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_second);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
helpher = new DatabaseHelpher(this);
dbList= new ArrayList<DatabaseModel>();
dbList = helpher.getDataFromDB();
mRecyclerView = (RecyclerView)findViewById(R.id.recycleview);
mRecyclerView.setHasFixedSize(true);
// use a linear layout manager
mLayoutManager = new LinearLayoutManager(this);
mRecyclerView.setLayoutManager(mLayoutManager);
// specify an adapter (see also next example)
mAdapter = new RecyclerAdapter(this,dbList);
mRecyclerView.setAdapter(mAdapter);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_second, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case android.R.id.home:
finish();
return true;
}
return super.onOptionsItemSelected(item);
}
}
DetailedActivity.java
package com.example.prabhu.databasedemo;
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.TextView;
import android.widget.Toast;
import java.util.ArrayList;
import java.util.List;
public class DetailsActivity extends AppCompatActivity {
DatabaseHelpher helpher;
List<DatabaseModel> dbList;
int position;
TextView tvname,tvemail,tvroll,tvaddress,tvbranch;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_details);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
Intent intent = getIntent();
Bundle bundle = intent.getExtras();
// 5. get status value from bundle
position = bundle.getInt("position");
tvname =(TextView)findViewById(R.id.name);
tvemail =(TextView)findViewById(R.id.email);
tvroll =(TextView)findViewById(R.id.roll);
tvaddress =(TextView)findViewById(R.id.address);
tvbranch =(TextView)findViewById(R.id.branch);
helpher = new DatabaseHelpher(this);
dbList= new ArrayList<DatabaseModel>();
dbList = helpher.getDataFromDB();
if(dbList.size()>0){
String name= dbList.get(position).getName();
String email=dbList.get(position).getEmail();
String roll=dbList.get(position).getRoll();
String address=dbList.get(position).getAddress();
String branch=dbList.get(position).getBranch();
tvname.setText(name);
tvemail.setText(email);
tvroll.setText(roll);
tvaddress.setText(address);
tvbranch.setText(branch);
}
Toast.makeText(DetailsActivity.this, dbList.toString(), Toast.LENGTH_SHORT);
}
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_details, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case android.R.id.home:
finish();
return true;
}
return super.onOptionsItemSelected(item);
}
}
I had added a button (findViewByID) in the DetailedAvtivity.java with an OnClickListener. Initially to only show a toast, however, when the button on any detailed view is clicked, nothing happens - no toast.
So really, questions are:
Where do I have to define the button and where do I implement the onClickListener?
How do I make the button delete the entry? For now I am happy to use the email from the email TextView (tvemail) but I will have to go back and refresh the cards as well.
Thanks all in advance
After some time I found the answer. What I was doing was correct but messed the toast command.
Basically what needs to be done is
delButton = (Button) findViewById(R.id.button);
delButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Toast.makeText(getApplicationContext(), tvemail.getText() + " deleted", Toast.LENGTH_SHORT).show();
startActivity(new Intent(DetailsActivity.this, MainActivity.class));
helpher.deleteARow((String) tvemail.getText());
}
});
I am trying to create an activity wherein I have added a search facility to search contacts in the phonebook and list the selected contacts in a ListView.
I have been able to get one row of the ListView working. However, when I try to add another contact, it just replaces the first row. I am new to android app development. Unable to figure out how to get the desired output.
Here is my code:
import android.app.SearchManager;
import android.app.SearchableInfo;
import android.content.Context;
import android.content.Intent;
import android.database.Cursor;
import android.graphics.Typeface;
import android.os.Bundle;
import android.provider.ContactsContract;
import android.support.v4.app.NavUtils;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.CursorAdapter;
import android.widget.ListView;
import android.widget.SearchView;
import android.widget.TextView;
public class FamilyAndFriends extends AppCompatActivity {
Typeface mytypeface1;
SearchView searchView;
ListView contactlist;
View contact_listview;
LayoutInflater layoutInflater;
Cursor nameCursor;
CursorAdapter nameAdapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_family_and_friends);
TextView textView = (TextView) findViewById(R.id.textView9);
mytypeface1 = Typeface.createFromAsset(getAssets(), "Roboto-Light.ttf");
textView.setTypeface(mytypeface1);
Toolbar toolbar = (Toolbar) findViewById(R.id.app_bar);
toolbar.setTitle("Friends & Family");
setSupportActionBar(toolbar);
getSupportActionBar().setHomeButtonEnabled(true);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
searchView = (SearchView) findViewById(R.id.searchView);
setupSearchView();
layoutInflater = getLayoutInflater();
contactlist = (ListView) findViewById(R.id.listView);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu_user_info, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
switch (id) {
case android.R.id.home:
NavUtils.navigateUpFromSameTask(this);
break;
case R.id.next:
startActivity(new Intent(this, Settings.class));
break;
}
return true;
}
private void setupSearchView() {
SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE);
SearchableInfo searchableInfo = searchManager.getSearchableInfo(getComponentName());
searchView.setSearchableInfo(searchableInfo);
searchView.setQueryRefinementEnabled(true);
searchView.setIconifiedByDefault(false);
}
private String getDisplayContactName(Intent intent) {
nameCursor = getContentResolver().query(intent.getData(), null, null, null, null);
nameCursor.moveToFirst();
int idDisplayName = nameCursor.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME);
return nameCursor.getString(idDisplayName);
}
#Override
protected void onNewIntent(Intent intent) {
if (ContactsContract.Intents.SEARCH_SUGGESTION_CLICKED.equals(intent.getAction())) {
final String CONTACT_NAME = getDisplayContactName(intent);
nameAdapter = new CursorAdapter(this, nameCursor, false) {
#Override
public View newView(Context context, Cursor cursor, ViewGroup parent) {
contact_listview = layoutInflater.inflate(R.layout.contact_listview, parent, false);
return contact_listview;
}
#Override
public void bindView(View view, Context context, Cursor cursor) {
final TextView name_Contact = (TextView) view.findViewById(R.id.contact_name);
name_Contact.setText(CONTACT_NAME);
name_Contact.setTypeface(mytypeface1);
}
};
}
contactlist.setAdapter(nameAdapter);
}
#Override
protected void onStop() {
super.onStop();
if (nameCursor != null) {
nameCursor.close();
}
}
}
Any helps???
Most likely it sounds like you are returning only one item in your getItemCount()
#Override
public int getItemCount() {
return list.size();
}
you need to return the size of the list that you are passing in your adapter
I've got this error, but I don't know how to resolve this error.
Error: Fragments should be static such that they can be re-instantiated by the system, and anonymous classes are not static [ValidFragment]
Please help me if you know how to solve
This is the MainActivity.java
import android.annotation.TargetApi;
import android.app.ProgressDialog;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.SharedPreferences;
import android.content.res.ColorStateList;
import android.content.res.Configuration;
import android.graphics.Color;
import android.os.Build;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.NavigationView;
import android.support.design.widget.Snackbar;
import android.support.design.widget.TabLayout;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.content.LocalBroadcastManager;
import android.support.v4.view.GravityCompat;
import android.support.v4.view.ViewPager;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBar;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.TextView;
import android.widget.Toast;
import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.GoogleApiAvailability;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.util.ArrayList;
import java.util.List;
public class MainActivity extends AppCompatActivity {
private DrawerLayout mDrawerLayout;
private String keyPref = "test";
private SharedPreferences pref;
private static SharedPreferences.Editor editor;
private static ViewPager view;
private FoodListFragment makanan = new FoodListFragment() {
#Override
public void doRefresh() {
updateData();
}
};
private FoodListFragment minuman = new FoodListFragment() {
#Override
public void doRefresh() {
updateData();
}
};
private FoodListFragment snack = new FoodListFragment() {
#Override
public void doRefresh() {
updateData();
}
};
private Adapter adapter = new Adapter(getSupportFragmentManager());
private static final int PLAY_SERVICES_RESOLUTION_REQUEST = 4343;
private BroadcastReceiver mRegistrationBroadcastReceiver;
private static ProgressDialog loading;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
pref = getApplicationContext().getSharedPreferences(keyPref, MODE_PRIVATE);
editor = pref.edit();
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
final ActionBar ab = getSupportActionBar();
ab.setHomeAsUpIndicator(R.drawable.ic_menu);
ab.setDisplayHomeAsUpEnabled(true);
mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
if (navigationView != null) {
setupDrawerContent(navigationView);
}
ViewPager viewPager = (ViewPager) findViewById(R.id.viewpager);
if (viewPager != null) {
setupViewPager(viewPager);
}
FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
fab.setBackgroundTintList(ColorStateList.valueOf(Color.rgb(183,28,28)));
fab.setOnClickListener(new View.OnClickListener() {
#TargetApi(Build.VERSION_CODES.LOLLIPOP)
#Override
public void onClick(View view) {
Intent intent = new Intent(getApplicationContext(), CartActivity.class);
MainActivity.this.startActivity(intent);
}
});
TabLayout tabLayout = (TabLayout) findViewById(R.id.tabs);
tabLayout.setupWithViewPager(viewPager);
DBHelper db = new DBHelper(this);
mRegistrationBroadcastReceiver = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
//mRegistrationProgressBar.setVisibility(ProgressBar.GONE);
SharedPreferences sharedPreferences =
PreferenceManager.getDefaultSharedPreferences(context);
boolean sentToken = sharedPreferences
.getBoolean(QuickstartPreferences.SENT_TOKEN_TO_SERVER, false);
}
};
loading = new ProgressDialog(this);
loading.setMessage("Loading");
loading.setTitle("Menu");
updateData();
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
return true;
}
#Override
protected void onPause() {
super.onPause();
LocalBroadcastManager.getInstance(this).unregisterReceiver(mRegistrationBroadcastReceiver);
}
#Override
protected void onResume() {
super.onResume();
LocalBroadcastManager.getInstance(this).registerReceiver(mRegistrationBroadcastReceiver,
new IntentFilter(QuickstartPreferences.REGISTRATION_COMPLETE));
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case android.R.id.home:
mDrawerLayout.openDrawer(GravityCompat.START);
return true;
}
return super.onOptionsItemSelected(item);
}
public void updateData() {
ServerHelper server = new ServerHelper() {
#Override
public void onStart() {
loading.show();
}
#Override
public void onFinish() {
loading.dismiss();
}
#Override
public void onSuccess(int statusCode, String response) {
try {
editor.putString("response", response);
editor.commit();
makanan.clearFood();
minuman.clearFood();
snack.clearFood();
JSONArray foods = new JSONArray(response);
for (int i = 0; i <= foods.length()-1; i++) {
JSONObject object = foods.getJSONObject(i);
JSONObject subs = object.getJSONObject("SubCategory");
FoodCategory addFood = new FoodCategory(subs.getString("name"), subs.getString("photo"));
if (subs.getString("categories_id").contains("1")) {
makanan.addFood(addFood);
} else if (subs.getString("categories_id").contains("2")) {
minuman.addFood(addFood);
} else if (subs.getString("categories_id").contains("3")) {
snack.addFood(addFood);
}
}
makanan.doneRefresh();
minuman.doneRefresh();
snack.doneRefresh();
} catch (JSONException e) {
e.printStackTrace();
Toast.makeText(view.getContext(),"Terjadi masalah koneksi, silahkan coba kembali", Toast.LENGTH_LONG).show();
}
loading.dismiss();
}
#Override
public void onFailure(int statusCode, String response) {
if (view != null) {
Snackbar.make(view, "Terjadi Masalah Koneksi", Snackbar.LENGTH_LONG)
.setAction("Action", null).show();
} else {
Toast.makeText(MainActivity.this,"Terjadi Masalah Koneksi", Toast.LENGTH_LONG).show();
}
makanan.doneRefresh();
minuman.doneRefresh();
snack.doneRefresh();
loading.dismiss();
}
};
server.getAllSubs();
}
private void setupViewPager(ViewPager viewPager) {
makanan.setRetainInstance(true);
minuman.setRetainInstance(true);
snack.setRetainInstance(true);
adapter.addFragment(makanan, "Makanan");
adapter.addFragment(minuman, "Minuman");
adapter.addFragment(snack, "Snack");
viewPager.setAdapter(adapter);
updateData();
}
#Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
}
private void setupDrawerContent(final NavigationView navigationView) {
View header = navigationView.getHeaderView(0);
TextView username = (TextView) header.findViewById(R.id.main_username);
DBHelper db = new DBHelper(this);
username.setText(db.getUsers().getName());
navigationView.setNavigationItemSelectedListener(
new NavigationView.OnNavigationItemSelectedListener() {
#Override
public boolean onNavigationItemSelected(MenuItem menuItem) {
switch (menuItem.getItemId()) {
case R.id.nav_home: {
menuItem.setChecked(true);
break;
}
case R.id.nav_order: {
navigationView.getMenu().getItem(0).setChecked(true);
Intent order = new Intent(MainActivity.this, OrderActivity.class);
startActivity(order);
break;
}
case R.id.nav_cart: {
navigationView.getMenu().getItem(0).setChecked(true);
Intent cart = new Intent(MainActivity.this, CartActivity.class);
startActivity(cart);
break;
}
case R.id.nav_logout: {
AlertDialog.Builder dialog = new AlertDialog.Builder(MainActivity.this);
dialog.setMessage("Anda yakin ingin logout akun anda ?");
dialog.setNegativeButton("Batal",
new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface arg0, int arg1) {
}
});
dialog.setPositiveButton("Keluar",
new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface arg0, int arg1) {
DBHelper logout = new DBHelper(MainActivity.this);
logout.clearSPConfig();
LocalBroadcastManager.getInstance(MainActivity.this).unregisterReceiver(mRegistrationBroadcastReceiver);
Intent goLogin = new Intent(MainActivity.this, LoginMainActivity.class);
startActivity(goLogin);
}
});
AlertDialog alertDialog = dialog.create();
alertDialog.show();
}
}
mDrawerLayout.closeDrawers();
return true;
}
});
}
public static class Adapter extends FragmentPagerAdapter {
private final List<Fragment> mFragments = new ArrayList<>();
private final List<String> mFragmentTitles = new ArrayList<>();
public Adapter(FragmentManager fm) {
super(fm);
}
public void addFragment(Fragment fragment, String title) {
mFragments.add(fragment);
mFragmentTitles.add(title);
}
#Override
public Fragment getItem(int position) {
return mFragments.get(position);
}
#Override
public int getCount() {
return mFragments.size();
}
#Override
public CharSequence getPageTitle(int position) {
return mFragmentTitles.get(position);
}
}
}
and this is the fragment class FoodListFragment.java
import android.graphics.Color;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.annotation.UiThread;
import android.support.design.widget.Snackbar;
import android.support.v4.app.Fragment;
import android.support.v4.widget.SwipeRefreshLayout;
import android.support.v7.widget.GridLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.util.Log;
import android.view.InflateException;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.util.ArrayList;
public abstract class FoodListFragment extends Fragment {
private ArrayList<FoodCategory> foodList = new ArrayList<FoodCategory>();
private RecyclerView rv;
private RecyclerViewAdapter adapter;
private SwipeRefreshLayout swipeLayout;
private View view;
FoodListFragment() {
}
public void addFoods(ArrayList<FoodCategory> food) {
foodList = food;
if (adapter != null) {
adapter.notifyDataSetChanged();
}
}
public void addFood(FoodCategory food) {
foodList.add(food);
if (adapter != null) {
adapter.notifyDataSetChanged();
}
}
public void clearFood() {
foodList.clear();
}
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
// final RecyclerView rv = (RecyclerView) inflater.inflate(R.layout.fragment_food_list, container, false);
view = inflater.inflate(R.layout.fragment_food_list, null);
swipeLayout = (SwipeRefreshLayout) view.findViewById(R.id.swipe_container);
swipeLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
#Override
public void onRefresh() {
doRefresh();
}
});
swipeLayout.setColorSchemeColors(Color.RED, Color.GRAY);
RecyclerView rv = (RecyclerView) view.findViewById(R.id.recyclerview);
setupRecyclerView(rv);
return view;
}
private void setupRecyclerView(final RecyclerView recyclerView) {
//recyclerView.setLayoutManager(new LinearLayoutManager(recyclerView.getContext()));
recyclerView.setLayoutManager(new GridLayoutManager(recyclerView.getContext(), 2));
recyclerView.setHasFixedSize(true);
setRetainInstance(true);
adapter = new RecyclerViewAdapter(getActivity(),foodList);
recyclerView.setAdapter(adapter);
}
public void doneRefresh(){
if (swipeLayout != null) {
swipeLayout.setRefreshing(false);
}
}
public abstract void doRefresh();
}
You are declaring your Fragment as abstract class. Abstract class can't be instantiated. It can be used only as a base class. The way you are trying to use it (anonymous class) is not possible in Android framework. A Fragment class must be a subclass of Fragment (or an existing subclass of it) and concrete.
Remove abstract keyword
public class FoodListFragment extends Fragment {
Things your are trying to achieve with
public abstract void doRefresh();
should be done using an interface.