Develop Reference

Get Values from Adapter to main activity

I was trying to get the values which i have entered in edit text using recycler view. On click of submit i want to save the text given in the editetxt to the table.
using Json stored the data to the table - Success
upto array adapter i got the data
now how to move the data from adapter to the main activity to save the data into table on single submit button. [enter image description here][1]
Activity
public class fertlizerRequest extends AppCompatActivity {
Button submit_btn,view_btn;
RecyclerView material_lv;
ArrayList<ProductData> arrayList;
ProductsAdapter myAdapterP;
private RecyclerView.LayoutManager mLayoutManager;
DBHelperClass dbHelperClass = new DBHelperClass(this);
Integer[] enteredNumber = new Integer[1000];
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_fertlizer_request);
datacasting();
view_btn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
PlantLocationAssy plantLocationAssy = new PlantLocationAssy();
plantLocationAssy.execute();
}
});
submit_btn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Toast.makeText(fertlizerRequest.this, "Edited Item are ", Toast.LENGTH_SHORT).show();
}
});
}
void datacasting(){
material_lv = (RecyclerView) findViewById(R.id.materialreq_lv);
submit_btn = (Button) findViewById(R.id.sbt_btn);
view_btn = (Button) findViewById(R.id.vie_btn);
mLayoutManager = new LinearLayoutManager(this);
material_lv.setLayoutManager(mLayoutManager);
}
void fetchProductData(){
arrayList = dbHelperClass.getProductsDataFromDB();
myAdapterP = new ProductsAdapter(fertlizerRequest.this, arrayList, new ProductsAdapter.onEditTextChanged() {
#Override
public void onTextChanged(int position, String charSeq) {
enteredNumber[position] = Integer.valueOf(charSeq);
System.out.println("==================================== " + position);
Toast.makeText(fertlizerRequest.this, "Entered value is " + myAdapterP.getItemId(position), Toast.LENGTH_SHORT).show();
}
});
material_lv.setAdapter(myAdapterP);
myAdapterP.notifyDataSetChanged();
System.out.println("==================================== " + myAdapterP.getItemCount() );
}
private class PlantLocationAssy extends AsyncTask<Void, Void, Void> {
#Override
protected Void doInBackground(Void... voids) {
return null;
}
#Override
protected void onPostExecute(Void aVoid) {
super.onPostExecute(aVoid);
fetchProductData();
}
#Override
protected void onPreExecute() {
super.onPreExecute();
}
}
}
Adapter
package com.example.fertlizertrackerapp.Adapter;
import android.content.Context;
import android.content.Intent;
import android.text.Editable;
import android.text.TextWatcher;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
import androidx.annotation.NonNull;
import androidx.recyclerview.widget.RecyclerView;
import com.example.fertlizertrackerapp.Model.ProductData;
import com.example.fertlizertrackerapp.R;
import java.io.Serializable;
import java.util.ArrayList;
public class ProductsAdapter extends RecyclerView.Adapter<ProductsAdapter.Holder> {
private Context context;
private ArrayList<ProductData> arrayList;
private onEditTextChanged onEditTextChanged;
public ProductsAdapter(Context context, ArrayList<ProductData> arrayList, onEditTextChanged onEditTextChanged) {
this.context = context;
this.arrayList = arrayList;
this.onEditTextChanged = onEditTextChanged;
}
#NonNull
#Override
public Holder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View view = LayoutInflater.from(context).inflate(R.layout.cust_lv_fertilizer_request, parent, false);
return new Holder(view);
}
#Override
public void onBindViewHolder(#NonNull final Holder holder, final int position) {
final ProductData productData = arrayList.get(position);
// get for view
String productId = productData.getProductId();
final String material = productData.getMaterial();
String materialCode = productData.getMaterialCode();
//set view
holder.productId.setText(productId);
holder.material.setText(material);
holder.materialCode.setText(materialCode);
holder.quantity.addTextChangedListener(new TextWatcher() {
#Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
#Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
onEditTextChanged.onTextChanged(position,s.toString());
String qty = holder.quantity.getText().toString();
Toast.makeText(context, "Value Changed is " + material + " : " + qty, Toast.LENGTH_SHORT).show();
}
#Override
public void afterTextChanged(Editable s) {
}
});
}
#Override
public int getItemCount() {
return arrayList.size();
}
class Holder extends RecyclerView.ViewHolder{
TextView productId, material,materialCode;
EditText quantity;
public Holder(#NonNull View itemView) {
super(itemView);
productId = itemView.findViewById(R.id.productId_tv);
material = itemView.findViewById(R.id.materialName_tv);
materialCode = itemView.findViewById(R.id.materialCode_tv);
quantity = (itemView).findViewById(R.id.materialQuantity_edt);
}
}
#Override
public int getItemViewType(int position) {
return super.getItemViewType(position);
}
public interface onEditTextChanged{
void onTextChanged(int position, String charSeq);
}
}
Model
package com.example.fertlizertrackerapp.Model;
public class ProductData {
String ProductId, Material,MaterialCode;
int quantity = 0;
public ProductData(String productId, String material,String materialCode) {
this.ProductId = productId;
this.Material = material;
this.MaterialCode = materialCode;
}
public String getProductId() {
return ProductId;
}
public void setProductId(String productId) {
ProductId = productId;
}
public String getMaterial() {
return Material;
}
public void setMaterial(String material) {
Material = material;
}
public String getMaterialCode() {
return MaterialCode;
}
public void setMaterialCode(String materialCode) {
MaterialCode = materialCode;
}
public int getQuantity() {
return quantity;
}
public void setQuantity(int quantity) {
this.quantity = quantity;
}
}
DBHelperClass
package com.example.fertlizertrackerapp;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import com.example.fertlizertrackerapp.Model.PlantData;
import com.example.fertlizertrackerapp.Model.ProductData;
import com.example.fertlizertrackerapp.Model.ProductRateData;
import java.util.ArrayList;
public class DBHelperClass extends SQLiteOpenHelper {
public static final int DBVersion = 1;
public static final String DB_Godown = "FertlizerApp.db";
public static final String DB_ProductListTABLE = "ProductDetails";
public static final String DB_ProductId = "ProductId";
public static final String DB_productStatus = "productStatus";
public static final String DB_Material = "Material";
public static final String DB_MaterialCode = "MaterialCode";
public static final String DB_MaterialStatus = "Status";
public static final String DB_MaterialCreatedBy = "CreatedBy";
public static final String DB_MaterialCreatedOn = "CreatedOn";
public static final String DB_MaterialUpdatedBy = "UpdatedBy";
public static final String DB_MaterialUpdatedOn = "UpdatedOn";
#Override
public void onCreate(SQLiteDatabase db) {
db.execSQL(" CREATE TABLE " + DB_ProductListTABLE + "(" + DB_ProductId + " TEXT, "
+ DB_productStatus + " TEXT, "
+ DB_Material + " TEXT, "
+ DB_MaterialCode + " TEXT NOT NULL PRIMARY KEY, "
+ DB_MaterialStatus + " TEXT, "
+ DB_MaterialCreatedBy + " TEXT, "
+ DB_MaterialCreatedOn + " TEXT, "
+ DB_MaterialUpdatedBy + " TEXT, "
+ DB_MaterialUpdatedOn + " TEXT)");
}
#Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
db.execSQL("DROP TABLE IF EXISTS " + DB_ProductListTABLE);
}
public Boolean insertProductDetails(String v_ProductId, String v_productStatus, String v_Material, String v_MaterialCode, String v_MaterialStatus, String v_MaterialCreatedBy, String v_MaterialCreatedOn, String v_MaterialUpdatedBy, String v_MaterialUpdatedOn) {
SQLiteDatabase db = this.getWritableDatabase();
ContentValues contentValue = new ContentValues();
contentValue.put("ProductId", v_ProductId);
contentValue.put("productStatus", v_productStatus);
contentValue.put("Material", v_Material);
contentValue.put("MaterialCode", v_MaterialCode);
contentValue.put("Status", v_MaterialStatus);
contentValue.put("CreatedBy", v_MaterialCreatedBy);
contentValue.put("CreatedOn", v_MaterialCreatedOn);
contentValue.put("UpdatedBy", v_MaterialUpdatedBy);
contentValue.put("UpdatedOn", v_MaterialUpdatedOn);
long result = db.insert(DB_ProductListTABLE, null, contentValue);
if (result == -1)
return false;
else
return true;
}
public DBHelperClass(Context context) {
super(context, DB_Godown, null, DBVersion);
}
public ArrayList<ProductData> getProductsDataFromDB(){
ArrayList<ProductData> arrayList = new ArrayList<>();
SQLiteDatabase db = this.getReadableDatabase();
Cursor cursor = db.rawQuery("select * from " + DB_ProductListTABLE, null);
while (cursor.moveToNext()) {
String productId = cursor.getString(0);
String material = cursor.getString(2);
String materialCode = cursor.getString(3);
ProductData productData = new ProductData(productId,material,materialCode);
arrayList.add(productData);
System.out.println("00000000000000000000 Product 00000000000000000000000000000 " + material);
}
return arrayList;
}
}
[1]: https://i.stack.imgur.com/ikNRR.jpg

getContext().getContentResolver().notifyChange(uri, null) didn't notify cursor

i'm trying to undestand Content Provider,but i stuck in one thing,
notification of cursor didn't work,if i update cursor in query method everything works fine.Where i get wrong.Thank you! This is full source code
https://github.com/denmariupol/StartAndroid/tree/master/lesson101_contentprovider_creation_h/src/main
MainActivity
package com.example.lesson101_contentprovider_creation_h;
import android.content.ContentUris;
import android.content.ContentValues;
import android.content.Context;
import android.support.v4.app.Fragment;
import android.database.Cursor;
import android.databinding.DataBindingUtil;
import android.net.Uri;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentTransaction;
import android.os.Bundle;
import android.text.Editable;
import android.text.TextWatcher;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.view.inputmethod.InputMethodManager;
import android.widget.AdapterView;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.EditText;
import android.widget.FrameLayout;
import android.widget.LinearLayout;
import android.widget.SimpleCursorAdapter;
import android.widget.TextView;
import android.widget.Toast;
import com.example.lesson101_contentprovider_creation_h.databinding.ActivityMainBinding;
import com.example.lesson101_contentprovider_creation_h.interfaces.IUpdateCursor;
import com.example.lesson101_contentprovider_creation_h.fragments.Insert;
import com.facebook.stetho.Stetho;
import java.util.ArrayList;
public class MainActivity extends FragmentActivity implements IUpdateCursor {
public final static Uri PROVIDER_URI = Uri.parse("com.example.lesson101_contentprovider_creation_h");
private Cursor cursor;
private MyAdapter scAdapter;
private ActivityMainBinding mainActivity;
private OnClickListener clickListener;
private int colId;
private int colText;
private ArrayList<Integer> chekedItems = new ArrayList<>();
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
stethoInit();
mainActivity = DataBindingUtil.setContentView(this, R.layout.activity_main);
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.JELLY_BEAN) {
cursor = getContentResolver().query(MyProvider.CONTENT_URI, null, null, null, null, null);
}
colId = cursor.getColumnIndex(MyProvider.ID);
colText = cursor.getColumnIndex(MyProvider.TEXT);
String[] from = new String[]{MyProvider.ID, MyProvider.TEXT};
int[] to = new int[]{R.id.itemId, R.id.itemText};
scAdapter = new MyAdapter(this, R.layout.item, cursor, from, to, 0);
mainActivity.listItem.setAdapter(scAdapter);
scAdapter.notifyDataSetChanged();
mainActivity.listItem.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
final View v = view;
final LinearLayout itemUpdateLayout = (LinearLayout)view.findViewById(R.id.itemUpdateLayout);
final LinearLayout itemViewLayout = (LinearLayout)view.findViewById(R.id.itemViewLayout);
TextView idView = (TextView)view.findViewById(R.id.itemId);
TextView textView = (TextView)view.findViewById(R.id.itemText);
final EditText editText = (EditText)view.findViewById(R.id.updateTextField);
Button updateButton = (Button)view.findViewById(R.id.updateRecButton);
editText.addTextChangedListener(new TextWatcher() {
#Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
#Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
Log.d("!!!","onTextChanged -> "+s.toString());
// ed
}
#Override
public void afterTextChanged(Editable s) {
}
});
final String updId = idView.getText().toString();
updateButton.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
ContentValues cv = new ContentValues();
String text = editText.getText().toString();
Log.d("!!!","clicked text -> "+editText.getText().toString());
if(text.length() > 0) {
cv.put(MyProvider.TEXT, text);
Uri newUri = ContentUris.withAppendedId(MyProvider.CONTENT_URI,Long.valueOf(updId));
getContentResolver().update(newUri, cv,null,null);
// Cursor cursor = null;
// if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.JELLY_BEAN) {
// cursor = getContentResolver().query(MyProvider.CONTENT_URI,null,null,null,null,null);
// }
// updateCursor(cursor);
}
itemUpdateLayout.setVisibility(View.GONE);
itemViewLayout.setVisibility(View.VISIBLE);
}
});
editText.setText(textView.getText());
itemUpdateLayout.setVisibility(View.VISIBLE);
itemViewLayout.setVisibility(View.INVISIBLE);
}
});
mainActivity.insert.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Fragment insertFragment = new Insert();
FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
ft.replace(R.id.container, insertFragment);
ft.addToBackStack(null);
ft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE);
ft.commit();
}
});
mainActivity.delete.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
if(chekedItems.size() > 0){
for (int i = 0; i < chekedItems.size(); i++) {
Uri newUri = ContentUris.withAppendedId(MyProvider.CONTENT_URI,chekedItems.get(i));
getContentResolver().delete(newUri,null,null);
// Cursor cursor = null;
// if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.JELLY_BEAN) {
// cursor = getContentResolver().query(MyProvider.CONTENT_URI,null,null,null,null,null);
// }
// updateCursor(cursor);
}
chekedItems.clear();
}else{
Toast.makeText(MainActivity.this,"Nothing selected",Toast.LENGTH_SHORT).show();
}
}
});
}
private void stethoInit() {
// Create an InitializerBuilder
Stetho.InitializerBuilder initializerBuilder =
Stetho.newInitializerBuilder(this);
// Enable Chrome DevTools
initializerBuilder.enableWebKitInspector(
Stetho.defaultInspectorModulesProvider(this)
);
// Enable command line interface
initializerBuilder.enableDumpapp(
Stetho.defaultDumperPluginsProvider(this)
);
// Use the InitializerBuilder to generate an Initializer
Stetho.Initializer initializer = initializerBuilder.build();
// Initialize Stetho with the Initializer
Stetho.initialize(initializer);
}
#Override
public void updateCursor(Cursor newCusor) {
scAdapter.changeCursor(newCusor);
scAdapter.notifyDataSetChanged();
//hide keyboard
View view = this.getCurrentFocus();
if (view != null) {
InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
imm.hideSoftInputFromWindow(view.getWindowToken(), 0);
}
}
private class MyAdapter extends SimpleCursorAdapter{
private int layout;
public MyAdapter(Context context, int layout, Cursor c, String[] from, int[] to, int flags) {
super(context, layout, c, from, to, flags);
this.layout = layout;
}
#Override
public void bindView(View view, Context context, Cursor cursor) {
final String id = cursor.getString(colId);
String title = cursor.getString(colText);
TextView idView = (TextView)view.findViewById(R.id.itemId);
idView.setText(id);
TextView textView = (TextView)view.findViewById(R.id.itemText);
textView.setText(title);
CheckBox checkBox = (CheckBox)view.findViewById(R.id.itemCheckBox);
checkBox.setChecked(false);
checkBox.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
if(!chekedItems.contains(Integer.valueOf(id))){
chekedItems.add(Integer.valueOf(id));
}else{
chekedItems.remove(chekedItems.indexOf(Integer.valueOf(id)));
}
}
});
}
#Override
public View newView(Context context, Cursor cursor, ViewGroup parent) {
View view = getLayoutInflater().inflate(layout,parent,false);
return view;
}
#Override
public int getItemViewType(int position) {
return position;
}
#Override
public int getViewTypeCount() {
return getCount();
}
}
}
Insert Fragment
package com.example.lesson101_contentprovider_creation_h.fragments;
import android.app.Activity;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.databinding.DataBindingUtil;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import com.example.lesson101_contentprovider_creation_h.MainActivity;
import com.example.lesson101_contentprovider_creation_h.MyProvider;
import com.example.lesson101_contentprovider_creation_h.R;
import com.example.lesson101_contentprovider_creation_h.databinding.FragmentInsertBinding;
import com.example.lesson101_contentprovider_creation_h.interfaces.IUpdateCursor;
/**
* A simple {#link Fragment} subclass.
*/
public class Insert extends Fragment{
Activity activity;
public Insert() {
// Required empty public constructor
}
#Override
public void onAttach(Context context) {
super.onAttach(context);
this.activity = (Activity)context;
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
final FragmentInsertBinding insertBinding = DataBindingUtil.inflate(inflater,R.layout.fragment_insert,container,false);
View v = insertBinding.getRoot();
insertBinding.insertRecButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
ContentValues cv = new ContentValues();
String text = insertBinding.insertTextField.getText().toString();
if(text.length() > 0) {
cv.put(MyProvider.TEXT, text);
getContext().getContentResolver().insert(MyProvider.CONTENT_URI, cv);
getActivity().getSupportFragmentManager().beginTransaction().remove(Insert.this).commit();
insertBinding.insertTextField.clearFocus();
// Cursor cursor = null;
// if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.JELLY_BEAN) {
// cursor = getContext().getContentResolver().query(MyProvider.CONTENT_URI,null,null,null,null,null);
// }
// ((IUpdateCursor)activity).updateCursor(cursor);
}
}
});
// Inflate the layout for this fragment
return v;
}
// public interface IUpdateCursor{
// void updateCursor(Cursor newCursor);
// }
}
MyProvider
package com.example.lesson101_contentprovider_creation_h;
import android.content.ContentProvider;
import android.content.ContentUris;
import android.content.ContentValues;
import android.content.Context;
import android.content.UriMatcher;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import android.net.Uri;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.util.Log;
/**
* Created by den on 2017-03-31.
*/
public class MyProvider extends ContentProvider{
private final String DB_NAME = "my";
private int DB_VERSION = 1;
private static final String AUTHORITY = "com.example.lesson101_contentprovider_creation_h";
private static final String PATH = "table";
public static final Uri CONTENT_URI = Uri.parse("content://" + AUTHORITY + "/" + PATH);
public static final String DB_TABLE = "MYTABLE";
public static final String ID = "_id";
public static final String TEXT = "text";
private final String CREATE_DB = "CREATE TABLE " + DB_TABLE + " ("
+ ID + " integer primary key autoincrement, "
+ TEXT + " text);";
private DBHelper dbHelper;
private SQLiteDatabase database;
private static final int TABLE = 1;
private static final int TABLE_ID = 2;
static final String CONTACT_CONTENT_ITEM_TYPE = "vnd.android.cursor.item/vnd."
+ AUTHORITY + "." + PATH;
private static UriMatcher uriMatcher = new UriMatcher(UriMatcher.NO_MATCH);
static {
uriMatcher.addURI(AUTHORITY, PATH, TABLE);
uriMatcher.addURI(AUTHORITY, PATH + "/#", TABLE_ID);
}
#Override
public boolean onCreate() {
dbHelper = new DBHelper(getContext());
return true;
}
#Nullable
#Override
public Cursor query(#NonNull Uri uri, #Nullable String[] projection,
#Nullable String selection, #Nullable String[] selectionArgs, #Nullable String sortOrder) {
database = dbHelper.getWritableDatabase();
switch (uriMatcher.match(uri)){
case TABLE:
sortOrder = ID;
break;
case TABLE_ID:
String id = uri.getLastPathSegment();
sortOrder = TEXT;
break;
}
Cursor cursor = database.query(DB_TABLE,projection,selection,selectionArgs,null,null,sortOrder);
Log.d("!!!","query -> "+uri.toString());
cursor.setNotificationUri(getContext().getContentResolver(),CONTENT_URI);
return cursor;
}
#Nullable
#Override
public String getType(#NonNull Uri uri) {
switch (uriMatcher.match(uri)){
case TABLE:
break;
case TABLE_ID:
return CONTACT_CONTENT_ITEM_TYPE;
}
return null;
}
#Nullable
#Override
public Uri insert(#NonNull Uri uri, #Nullable ContentValues values) {
database = dbHelper.getWritableDatabase();
Log.d("!!!","insert -> "+uri.toString());
if(uriMatcher.match(uri) != TABLE)
throw new IllegalArgumentException("Wrong URI: "+uri);
long id = database.insert(DB_TABLE,null,values);
Uri resultUri = ContentUris.withAppendedId(CONTENT_URI,id);
Log.d("!!!","insert after -> "+resultUri.toString());
getContext().getContentResolver().notifyChange(resultUri,null);
return resultUri;
}
#Override
public int delete(#NonNull Uri uri, #Nullable String selection, #Nullable String[] selectionArgs) {
database = dbHelper.getWritableDatabase();
switch (uriMatcher.match(uri)){
case TABLE:
break;
case TABLE_ID:
String id = uri.getLastPathSegment();
selection = ID + " = " + id;
break;
}
int c = database.delete(DB_TABLE,selection,selectionArgs);
getContext().getContentResolver().notifyChange(uri, null);
return c;
}
#Override
public int update(#NonNull Uri uri, #Nullable ContentValues values, #Nullable String selection, #Nullable String[] selectionArgs) {
database = dbHelper.getWritableDatabase();
switch (uriMatcher.match(uri)){
case TABLE:
break;
case TABLE_ID:
String id = uri.getLastPathSegment();
selection = ID + " = " +id;
Log.d("!!!",id);
break;
}
int c = database.update(DB_TABLE,values,selection,null);
getContext().getContentResolver().notifyChange(uri, null);
return c;
}
private class DBHelper extends SQLiteOpenHelper{
public DBHelper(Context context) {
super(context,DB_NAME,null,DB_VERSION);
}
#Override
public void onCreate(SQLiteDatabase db) {
updateDB(db,0,DB_VERSION);
}
#Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
}
private void updateDB(SQLiteDatabase db, int oldVersion, int newVersion){
if(oldVersion < 1)
db.execSQL(CREATE_DB);
}
}
}

Did you check if the uri used in setNotificationUri is matching the ones used in the getContext().getContentResolver().notifyChange()?
Cursor.setNotificationUri()
will register for the underline uri for the
getContext().getContentResolver().notifyChange(uri, null);
which is called when such as at ContentProvider's insert(), update() and delete() calls, so the Cursor (has setNotificationUri()) will be notified.
If you are using CursorAdapter, by default, CursorAdapter objects will get this notification issued by getContext().getContentResolver().notifyChange.
Another thing to make sure not to do cursor.close(), the close() will cause unregister the content observer which was registered by CursorLoader. And the cursor closing is managed by CursorLoader.

Multiple Table Android SQLite with Loader Callbacks

I'm trying to create a patient registration app in android but I'm currently stuck on how to achieved a multiple table to relate with and add to loader callback method.
The First table is for patient fullname.
And the Second table is for patient information foreign key to the id of the patient_fullname table.
Can someone here explain or help me on how to achieved this output?
Appreciate for any help.
PatienDBOpenHelper.java
import android.content.Context;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import android.util.Log;
public class PatientDBOpenHelper extends SQLiteOpenHelper{
//Constants for db name and version
private static final String LOGTAG = "DENTALAPP";
private static final String DATABASE_NAME = "dental.db";
private static final int DATABASE_VERSION = 1;
//Constants for identifying table and columns
public static final String TABLE_PATIENT = "patient";
public static final String PATIENT_ID = "_id";
public static final String PATIENT_NAME = "nameInfo";
public static final String PATIENT_GENDER = "genderInfo";
public static final String PATIENT_CREATED = "patientCreated";
/*I will put my desired table structure here
_id
patientId
address
occupation
etc....
*/
public static final String[] ALL_COLUMNS = {PATIENT_ID, PATIENT_NAME, PATIENT_GENDER,PATIENT_CREATED};
//SQL to create table
private static final String TABLE_CREATE_PATIENT =
"CREATE TABLE " + TABLE_PATIENT + " (" +
PATIENT_ID + " INTEGER PRIMARY KEY AUTOINCREMENT, " +
PATIENT_NAME + " TEXT, " +
PATIENT_GENDER + " TEXT, " +
PATIENT_CREATED + " TEXT default CURRENT_TIMESTAMP" +
")";
/*
Will also add query statement here for another table.
*/
public PatientDBOpenHelper(Context context) {
super(context, DATABASE_NAME, null, DATABASE_VERSION);
}
#Override
public void onCreate(SQLiteDatabase sqLiteDatabase) {
/*
Add the creation of other table.
*/
sqLiteDatabase.execSQL(TABLE_CREATE_PATIENT);
Log.i(LOGTAG,"Table Created!");
}
#Override
public void onUpgrade(SQLiteDatabase sqLiteDatabase, int i, int i1) {
/*
Add the query of my additional drop table.
*/
sqLiteDatabase.execSQL("DROP TABLE IF EXIST " + TABLE_PATIENT);
onCreate(sqLiteDatabase);
}
}
PatientDataSource.java
import android.content.ContentValues;
import android.content.Context;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import android.util.Log;
import com.bloxofcode.multipletabs.model.Patient;
public class PatientDataSource {
private static final String LOGTAG = "DENTALAPP";
SQLiteOpenHelper dbhelper;
SQLiteDatabase database;
public PatientDataSource(Context context){
dbhelper = new PatientDBOpenHelper(context);
}
public void open(){
Log.i(LOGTAG,"Database open");
database = dbhelper.getWritableDatabase();
}
public void close(){
Log.i(LOGTAG,"Database close");
dbhelper.close();
}
public Patient create(Patient patient){
ContentValues values = new ContentValues();
values.put(PatientDBOpenHelper.PATIENT_NAME,patient.getPatientFullName());
values.put(PatientDBOpenHelper.PATIENT_GENDER,patient.getPatientGender());
long id = database.insert(PatientDBOpenHelper.TABLE_PATIENT,null,values);
patient.setId(id);
return patient;
}
}
Tab1.java
public class Tab1 extends Fragment implements LoaderManager.LoaderCallbacks<Cursor>{
private ImageButton imgButton;
private CustomDialog customDialog;
private TextView tvNoRecord;
private ImageView imgNoRecord;
private CursorAdapter cursorAdapter;
PatientDataSource patientDataSource;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
patientDataSource = new PatientDataSource(getActivity());
patientDataSource.open();
final View v =inflater.inflate(R.layout.tab_1,container,false);
imgButton = (ImageButton) v.findViewById(R.id.imageButton);
imgNoRecord = (ImageView) v.findViewById(R.id.imgNoRecord);
tvNoRecord = (TextView) v.findViewById(R.id.tvNoRecord);
//Creating ImageButton
imgButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
customDialog = new CustomDialog(getActivity());
customDialog.setDialogResult(new OnMyDialogResult() {
#Override
public void finish(String resultName, String resultGender) {
if (!resultName.isEmpty()){
Log.d("TestingUnit","asdadasdsa");
Patient patient = new Patient();
patient.setPatientFullName(resultName);
patient.setPatientGender(resultGender);
patientDataSource.create(patient);
restartLoader();
}
listPatient(v);
}
});
customDialog.show();
}
});
listPatient(v);
return v;
}
private void listPatient(View v){
cursorAdapter = new PatientCursorAdapter(getActivity(),null,0 );
ListView list = (ListView) v.findViewById(android.R.id.list);
list.setAdapter(cursorAdapter);
list.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
String info = ((TextView) view.findViewById(R.id.tvName)).getText().toString();
Intent i = new Intent(getContext(), UserInfoActivity.class);
i.putExtra("PersonName", info);
startActivity(i);
}
});
getLoaderManager().initLoader(0,null,this);
}
private void restartLoader(){
getLoaderManager().restartLoader(0,null,this);
}
#Override
public Loader<Cursor> onCreateLoader(int id, Bundle args) {
return new CursorLoader(getActivity(), PatientProvider.CONTENT_URI,null,null,null,null);
}
#Override
public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
if(data.getCount() > 0){
imgNoRecord.setVisibility(View.INVISIBLE);
tvNoRecord.setVisibility(View.INVISIBLE);
}else{
imgNoRecord.setVisibility(View.VISIBLE);
tvNoRecord.setVisibility(View.VISIBLE);
}
cursorAdapter.swapCursor(data);
}
#Override
public void onLoaderReset(Loader<Cursor> loader) {
cursorAdapter.swapCursor(null);
}
#Override
public void onResume() {
super.onResume();
patientDataSource.open();
}
#Override
public void onPause() {
super.onPause();
patientDataSource.close();
}
}
This is where i will get the 1st table(patient full name):
This is where the 2nd table will show its data(patient info):

ContentLoader on MediaStore, and automatic refresh/reload

I'm querying the MediaStore, joining Images and Thumbnails, and loading in a GridView. This works fine enough, but I can't figure out how to update my app when a new photo appears in the MediaStore (typically when taken by the camera). The default gallery app automatically loads the new image, but my app does nothing. I've tried registering content observers, and I've even tried adding a manual "refresh" menu button, but the only way to load the new image is to stop and restart the entire app.
Edit
Actually, that's not entirely true. If I take a new photo, and switch to some other gallery app or widget, then this other app will load the new image (thumbnail) and my app will then suddenly also refresh. This indicates that I am observing some events, right, since the new thumbnail eventually appears automatically in my app? Maybe I'm just not observing the right ones. I just don't understand how the manual refresh accomplishes nothing.
I'm posting the relevant java files, maybe someone can see what I'm forgetting, or am doing wrong?
I'm at a loss, been working at this for quite some time, so please forgive me if the post is too vague. I'll try to add whatever details are missing.
PhotoFragment
package com.example.android.galleri.app;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.provider.MediaStore;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.support.v4.app.LoaderManager;
import android.support.v4.content.CursorLoader;
import android.support.v4.content.Loader;
import android.util.Log;
import android.view.Display;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.Surface;
import android.view.View;
import android.view.ViewGroup;
import android.view.WindowManager;
import android.widget.AdapterView;
import android.widget.FrameLayout;
import android.widget.GridView;
import android.widget.TextView;
import com.example.android.galleri.app.data.PhotoContract;
public class PhotoFragment extends Fragment implements LoaderManager.LoaderCallbacks<Cursor> {
private final static int LOADER_ID = 87;
private PhotoAdapter mPhotoAdapter;
private int mPosition;
private GridView mGridView;
private TextView mEmptyView;
private int count_mem = -1;
private static final String SELECTED_KEY = "POSITION";
private boolean mTwoPane;
private boolean DF_hidden = false;
// these are the data we want from MediaStore
private final static String[] THUMBNAIL_COLUMNS = {
PhotoContract.ThumbEntry.COLUMN_THUMB_ID,
PhotoContract.ThumbEntry.COLUMN_DATA,
PhotoContract.ThumbEntry.COLUMN_IMAGE_ID,
PhotoContract.ThumbEntry.COLUMN_TITLE,
PhotoContract.ThumbEntry.COLUMN_DESC,
PhotoContract.ThumbEntry.COLUMN_DATE
};
static final int COL_THUMB_ID = 0;
static final int COL_THUMB_DATA = 1;
static final int COL_THUMB_IMAGE_ID = 2;
static final int COL_TITLE = 3;
static final int COL_DESC = 4;
static final int COL_DATE = 5;
public void setTwoPaneUI(boolean pTwoPane) {
mTwoPane = pTwoPane;
}
// interfaces
public interface Callback {
public void onItemSelected(Uri photoUri);
}
public interface FragmentCallback {
public void onTaskDone(int count);
}
public PhotoFragment() {
}
public int getPosition() {
return mPosition;
}
#Override
public void onActivityCreated(#Nullable Bundle savedInstanceState) {
getLoaderManager().initLoader(LOADER_ID, null, this);
super.onActivityCreated(savedInstanceState);
}
public void onNewCameraEvent() {
Log.v("JOAKIM", "PhotoFragment.onNewCameraEvent() triggering a refresh...");
restartLoader();
}
// https://stackoverflow.com/questions/22241705/calling-a-activity-method-from-broadcastreceiver-in-android
BroadcastReceiver broadcastReceiver = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
// internet lost alert dialog method call from here...
Log.v("JOAKIM", "PhotoFragment.broadcastReceiver.onReceive() captured the image!");
onNewCameraEvent();
}
};
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setHasOptionsMenu(true);
getActivity().registerReceiver(broadcastReceiver, new IntentFilter("TRIGGER_A_REFRESH"));
}
#Override
public void onDestroy() {
super.onDestroy();
getActivity().unregisterReceiver(broadcastReceiver);
}
#Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
inflater.inflate(R.menu.photofragment, menu);
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
if (id == R.id.action_refresh) {
Log.v("JOAKIM", "PhotoFragment.onOptionsItemSelected() refresh clicked");
// https://stackoverflow.com/questions/15271271/android-callback-asynctask-to-fragmentnot-activity
ManualRefreshTask refreshTask = new ManualRefreshTask(
new FragmentCallback() {
#Override
public void onTaskDone(int count) {
// loader is restarted every time, since I couldn't
// get the logic to work 100%
restartLoader();
/*
// if the number of images has changed, restart loader
if (count != count_mem) restartLoader();
*/
count_mem = count;
}
});
refreshTask.execute(getActivity().getContentResolver());
return true;
}
return super.onOptionsItemSelected(item);
}
public void restartLoader() {
getLoaderManager().restartLoader(LOADER_ID, null, this);
}
#Override
public void onSaveInstanceState(Bundle outState) {
if (mPosition != GridView.INVALID_POSITION) {
outState.putInt(SELECTED_KEY, mPosition);
}
super.onSaveInstanceState(outState);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_main, container, false);
mPhotoAdapter = new PhotoAdapter(getActivity(), null, 0);
GridView gridView = (GridView) rootView.findViewById(R.id.listview_photo);
gridView.setAdapter(mPhotoAdapter);
mEmptyView = (TextView) rootView.findViewById(R.id.list_empty);
mGridView = gridView;
// handle user clicking on an image
gridView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView parent, View view, int position, long id) {
Cursor cursor = (Cursor) parent.getItemAtPosition(position);
if (cursor != null) {
Uri baseUri = PhotoContract.PhotoEntry.buildPhotoUriWithId(cursor.getLong(COL_THUMB_IMAGE_ID));
Log.v("JOAKIM", "PhotoFragment.onItemClick() image_id = " + cursor.getLong(COL_THUMB_IMAGE_ID)
+ ", baseUri = " + baseUri.toString());
// make sure detail fragment is visible
if (mTwoPane) showDetailFragment();
else Utility.setPosition(position); // else (single-pane): store position clicked!
((Callback)getActivity()).onItemSelected(baseUri);
}
mPosition = position;
}
});
if (savedInstanceState != null && savedInstanceState.containsKey(SELECTED_KEY)) {
mPosition = savedInstanceState.getInt(SELECTED_KEY);
}
return rootView;
}
#Override
public Loader<Cursor> onCreateLoader(int i, Bundle bundle) {
Uri thumbs_uri = PhotoContract.ThumbEntry.CONTENT_URI;
return new CursorLoader(getActivity(), thumbs_uri, THUMBNAIL_COLUMNS,
null,null, // read everything (all thumbnails)
PhotoContract.ThumbEntry.COLUMN_THUMB_ID + " DESC");
}
#Override
public void onLoadFinished(Loader<Cursor> cursorLoader, Cursor cursor) {
if (cursor != null) {
// register observer onto cursor
cursor.setNotificationUri(getActivity().getContentResolver(), PhotoContract.ThumbEntry.CONTENT_URI);
mPhotoAdapter.swapCursor(cursor);
if (mPosition != GridView.INVALID_POSITION) {
mGridView.setSelection(mPosition); // scroll into view
}
}
// save (set) cursor in Utility
Utility.setCursor(cursor);
if (cursor == null) {
mEmptyView.setText("No Images on Device");
mEmptyView.setVisibility(View.VISIBLE);
if (mTwoPane) {
mGridView.setVisibility(View.GONE);
hideDetailFragment();
}
} else {
mEmptyView.setVisibility(View.GONE);
if (mTwoPane) {
mGridView.setVisibility(View.VISIBLE);
showDetailFragment();
}
}
}
public void hideDetailFragment() {
if (!DF_hidden) {
Log.v("JOAKIM", "PhotoFragment.onLoadFinished() remove detail framelayout");
FrameLayout container = (FrameLayout) getActivity().findViewById(R.id.photo_detail_container);
container.setVisibility(View.GONE);
DF_hidden = true;
Display display = ((WindowManager) getActivity().getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay();
int rotation = display.getRotation();
int numColumns = 10;
if (rotation == Surface.ROTATION_0 || rotation == Surface.ROTATION_180) numColumns = 8;
else numColumns = 10;
mGridView.setNumColumns(numColumns);
}
}
public void showDetailFragment() {
if (DF_hidden) {
Log.v("JOAKIM", "PhotoFragment.onLoadFinished() show detail fragment");
FrameLayout container = (FrameLayout) getActivity().findViewById(R.id.photo_detail_container);
container.setVisibility(View.VISIBLE);
DF_hidden = false;
mGridView.setNumColumns(6);
}
}
#Override
public void onLoaderReset(Loader<Cursor> cursorLoader) {
mPhotoAdapter.swapCursor(null);
}
}
PhotoContract
package com.example.android.galleri.app.data;
import android.content.ContentResolver;
import android.content.ContentUris;
import android.net.Uri;
import android.provider.BaseColumns;
import android.provider.MediaStore;
import android.util.Log;
import java.util.HashMap;
import java.util.Map;
public class PhotoContract {
public static final String CONTENT_AUTHORITY = "com.example.android.galleri.app";
public static final Uri BASE_CONTENT_URI = Uri.parse("content://" + CONTENT_AUTHORITY);
public static final String PATH_THUMBS = "thumbs";
public static final String PATH_PHOTO = "photo";
public static final String PATH_COMMENT = "comment";
//public static final String PATH_AUTHOR = "author";
// define updateable fields (where to update them)
public static final String TARGET_EXIF = "EXIF";
public static final String TARGET_MEDIASTORE = "MediaStore.Images.Media";
public static final String TARGET_MEDIASTORE_THUMBS = "MediaStore.Images.Thumbnails";
public static final class ThumbEntry {
public static final Uri CONTENT_URI =
BASE_CONTENT_URI.buildUpon().appendPath(PATH_THUMBS).build();
public static final String COLUMN_THUMB_ID = MediaStore.Images.Thumbnails._ID;
public static final String COLUMN_DATA = MediaStore.Images.Thumbnails.DATA;
public static final String COLUMN_IMAGE_ID = MediaStore.Images.Thumbnails.IMAGE_ID;
public static final String COLUMN_IMAGE_PK = MediaStore.Images.Media._ID;
public static final String COLUMN_TITLE = MediaStore.Images.Media.TITLE;
public static final String COLUMN_DESC = MediaStore.Images.Media.DESCRIPTION;
public static final String COLUMN_DATE = MediaStore.Images.Media.DATE_TAKEN;
public static final String CONTENT_TYPE =
ContentResolver.CURSOR_DIR_BASE_TYPE + "/" + CONTENT_AUTHORITY + "/" + PATH_THUMBS;
public static final Map<String, String> COL_TYPES;
static {
COL_TYPES = new HashMap<String, String>();
COL_TYPES.put(COLUMN_THUMB_ID, TARGET_MEDIASTORE_THUMBS);
COL_TYPES.put(COLUMN_DATA, TARGET_MEDIASTORE_THUMBS);
COL_TYPES.put(COLUMN_IMAGE_ID, TARGET_MEDIASTORE_THUMBS);
COL_TYPES.put(COLUMN_TITLE, TARGET_MEDIASTORE);
COL_TYPES.put(COLUMN_DESC, TARGET_MEDIASTORE);
COL_TYPES.put(COLUMN_DATE, TARGET_MEDIASTORE);
}
}
public static final class PhotoEntry {
public static final Uri CONTENT_URI =
BASE_CONTENT_URI.buildUpon().appendPath(PATH_PHOTO).build();
public static final String COLUMN_IMAGE_ID = MediaStore.Images.Media._ID;
public static final String COLUMN_DISPLAY_NAME = MediaStore.Images.Media.DISPLAY_NAME;
public static final String COLUMN_DATA = MediaStore.Images.Media.DATA;
public static final String COLUMN_DESC = MediaStore.Images.Media.DESCRIPTION;
public static final String COLUMN_DATE_TAKEN = MediaStore.Images.Media.DATE_TAKEN;
public static final String COLUMN_DATE_ADDED = MediaStore.Images.Media.DATE_ADDED;
public static final String COLUMN_TITLE = MediaStore.Images.Media.TITLE;
public static final String COLUMN_SIZE = MediaStore.Images.Media.SIZE;
public static final String COLUMN_ORIENTATION = MediaStore.Images.Media.ORIENTATION;
public static final String COLUMN_HEIGHT = MediaStore.Images.Media.HEIGHT;
public static final String COLUMN_WIDTH = MediaStore.Images.Media.WIDTH;
public static final String COLUMN_EXIF_COMMENT = "UserComment";
public static final String COLUMN_EXIF_AUTHOR = "Author";
public static final Map<String, String> COL_TYPES;
static {
COL_TYPES = new HashMap<String, String>();
COL_TYPES.put(COLUMN_IMAGE_ID, TARGET_MEDIASTORE);
COL_TYPES.put(COLUMN_DISPLAY_NAME, TARGET_MEDIASTORE);
COL_TYPES.put(COLUMN_DATA, TARGET_MEDIASTORE);
COL_TYPES.put(COLUMN_DESC, TARGET_MEDIASTORE);
COL_TYPES.put(COLUMN_DATE_TAKEN, TARGET_MEDIASTORE);
COL_TYPES.put(COLUMN_DATE_ADDED, TARGET_MEDIASTORE);
COL_TYPES.put(COLUMN_TITLE, TARGET_MEDIASTORE);
COL_TYPES.put(COLUMN_SIZE, TARGET_MEDIASTORE);
COL_TYPES.put(COLUMN_ORIENTATION, TARGET_MEDIASTORE);
COL_TYPES.put(COLUMN_HEIGHT, TARGET_MEDIASTORE);
COL_TYPES.put(COLUMN_WIDTH, TARGET_MEDIASTORE);
COL_TYPES.put(COLUMN_EXIF_COMMENT, TARGET_EXIF);
COL_TYPES.put(COLUMN_EXIF_AUTHOR, TARGET_EXIF);
}
public static final String CONTENT_TYPE =
ContentResolver.CURSOR_DIR_BASE_TYPE + "/" + CONTENT_AUTHORITY + "/" + PATH_PHOTO;
public static final String CONTENT_ITEM_TYPE =
ContentResolver.CURSOR_ITEM_BASE_TYPE + "/" + CONTENT_AUTHORITY + "/" + PATH_PHOTO;
// makes an URI to a specific image_id
public static final Uri buildPhotoUriWithId(Long photo_id) {
return CONTENT_URI.buildUpon().appendPath(Long.toString(photo_id)).build();
}
// since we will "redirect" the URI towards MediaStore, we need to be able to extract IMAGE_ID
public static Long getImageIdFromUri(Uri uri) {
return Long.parseLong(uri.getPathSegments().get(1)); // always in position 1
}
}
}
PhotoProvider
package com.example.android.galleri.app.data;
import android.content.ContentProvider;
import android.content.ContentValues;
import android.content.UriMatcher;
import android.database.AbstractWindowedCursor;
import android.database.Cursor;
import android.database.CursorJoiner;
import android.database.CursorWindow;
import android.database.CursorWrapper;
import android.database.MatrixCursor;
import android.media.ExifInterface;
import android.net.Uri;
import android.provider.MediaStore;
import android.util.Log;
import java.io.IOException;
import java.lang.reflect.Field;
import java.util.ArrayList;
import java.util.Map;
public class PhotoProvider extends ContentProvider {
// The URI Matcher used by this content provider.
private static final UriMatcher sUriMatcher = buildUriMatcher();
// query: get all thumbnails, or get specific image
static final int THUMBS = 100;
static final int PHOTO = 101;
static final int FIRST_PHOTO = 102;
// update: set comment etc
static final int PHOTO_COMMENT = 200;
static UriMatcher buildUriMatcher() {
// 1) The code passed into the constructor represents the code to return for the root
// URI. It's common to use NO_MATCH as the code for this case. Add the constructor below.
final UriMatcher matcher = new UriMatcher(UriMatcher.NO_MATCH);
final String authority = PhotoContract.CONTENT_AUTHORITY;
// 2) Use the addURI function to match each of the types. Use the constants from
// WeatherContract to help define the types to the UriMatcher.
// get all thumbnails (with a JOIN towards MediaStore.Images, to get title and description, too)
matcher.addURI(authority, PhotoContract.PATH_THUMBS, THUMBS);
// matches photo (no ID). Means get first image
matcher.addURI(authority, PhotoContract.PATH_PHOTO, FIRST_PHOTO);
// matches photo/<any number> meaning any photo ID
matcher.addURI(authority, PhotoContract.PATH_PHOTO + "/#", PHOTO);
// matches photo/<photo id>/comment/ (comment text in ContentValues)
matcher.addURI(authority, PhotoContract.PATH_PHOTO + "/#/" + PhotoContract.PATH_COMMENT, PHOTO_COMMENT);
// 3) Return the new matcher!
return matcher;
}
#Override
public String getType(Uri uri) {
// Use the Uri Matcher to determine what kind of URI this is.
final int match = sUriMatcher.match(uri);
// Note: We always return single row of data, so content-type is always "a dir"
switch (match) {
case PHOTO_COMMENT:
return PhotoContract.PhotoEntry.CONTENT_TYPE;
case PHOTO:
return PhotoContract.PhotoEntry.CONTENT_TYPE;
case THUMBS:
return PhotoContract.ThumbEntry.CONTENT_TYPE;
default:
throw new UnsupportedOperationException("Unknown uri: " + uri);
}
}
#Override
public boolean onCreate() {
return true; // enough?
}
#Override
public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs, String sortOrder) {
// determine whether this is THUMBS or FULLSIZE query
int match = sUriMatcher.match(uri);
switch (match) {
case THUMBS: {
// split projection into MediaStore and MediaStore.Thumbs parts
ArrayList<String> MS_proj = new ArrayList<>();
ArrayList<String> MS_proj_thumbs = new ArrayList<>();
for (String f : projection) {
if (PhotoContract.ThumbEntry.COL_TYPES.get(f).equals(PhotoContract.TARGET_MEDIASTORE)) {
MS_proj.add(f);
} else {
MS_proj_thumbs.add(f);
}
}
String[] MS_proj_thumbs_array = new String[MS_proj_thumbs.size()];
MS_proj_thumbs_array = MS_proj_thumbs.toArray(MS_proj_thumbs_array);
// add _ID column to Images.Media projection, for use in JOIN
MS_proj.add("_ID");
String[] MS_proj_array = new String[MS_proj.size()];
MS_proj_array = MS_proj.toArray(MS_proj_array);
Uri baseUri;
// first, get cursor from MediaStore.Images.Thumbnails containing all thumbnails
baseUri = MediaStore.Images.Thumbnails.EXTERNAL_CONTENT_URI;
Log.v("JOAKIM", "Thumb: order by " + PhotoContract.ThumbEntry.COLUMN_DATE);
Cursor c_thumbs = getContext().getContentResolver().query(baseUri, MS_proj_thumbs_array, null, null, PhotoContract.ThumbEntry.COLUMN_IMAGE_ID);
if (c_thumbs == null || !c_thumbs.moveToFirst()) {
Log.v("JOAKIM", "MediaStore.Thumbnails cursor contains no data...");
return null;
}
// then, get cursor from MediaStore.Images.Media (for TITLE and DESCRIPTION etc)
// add _ID column to query
baseUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
Cursor c_images = getContext().getContentResolver().query(baseUri, MS_proj_array, null, null, PhotoContract.ThumbEntry.COLUMN_IMAGE_PK);
if (c_images == null || !c_images.moveToFirst()) {
Log.v("JOAKIM", "MediaStore.Images cursor contains no data...");
return null;
}
// join these and return
// the join is on images._ID = thumbnails.IMAGE_ID
CursorJoiner joiner = new CursorJoiner(
c_thumbs, new String[] { PhotoContract.ThumbEntry.COLUMN_IMAGE_ID },
c_images, new String[] { PhotoContract.ThumbEntry.COLUMN_IMAGE_PK }
);
MatrixCursor retCursor = new MatrixCursor(projection);
/*
Does a join on two cursors using the specified columns.
The cursors must already be sorted on each of the specified columns in ascending order.
This joiner only supports the case where the tuple of key column values is unique.
*/
for (CursorJoiner.Result joinerResult : joiner) {
switch (joinerResult) {
case LEFT:
// handle case where a row in cursorA is unique
break;
case RIGHT:
// handle case where a row in cursorB is unique
break;
case BOTH:
// handle case where a row with the same key is in both cursors
retCursor.addRow(new Object[]{
c_thumbs.getLong(0), // ID
c_thumbs.getString(1), // data
c_thumbs.getLong(2), // image id
c_images.getString(0), // title
c_images.getString(1), // desc
c_images.getLong(2) // date
});
break;
}
}
// https://stackoverflow.com/questions/12065606/getcontentresolver-query-cause-cursorwrapperinner-warning
c_thumbs.close();
c_images.close();
//retCursor.setNotificationUri(getContext().getContentResolver(), uri);
return retCursor;
}
}
return null;
}
}

Recycler view not showing after parsing json data using Volley

Inside my tab bar i want to show my data in Recycler view by using json parsing using volley library. I parsed the data and it showing in toast perfectly.But in Recycler view its not showing Here is my codes.
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Toast;
import com.android.volley.Request;
import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.ImageLoader;
import com.android.volley.toolbox.JsonObjectRequest;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import javax.xml.transform.ErrorListener;
import info.tatwa.adupter.AdupterBoxOffice;
import info.tatwa.extras.Keys;
import info.tatwa.extras.UrlEndPoint;
import info.tatwa.login.L;
import info.tatwa.model.Movies;
import info.tatwa.network.MyApplication;
import info.tatwa.network.VolleySingleton;
import info.tatwa.newnav.R;
import info.tatwa.extras.UrlEndPoint.*;
import info.tatwa.extras.Keys.EndpointBoxOffice.*;
public class FragmentBoxOffice extends Fragment {
private VolleySingleton volleySingleton;
private RequestQueue requestQueue;
private AdupterBoxOffice adupterBoxOffice;
private ArrayList<Movies>listMovie = new ArrayList<>();
private ImageLoader imageLoader;
private DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");
public static final String ROTET_TOMATO_URL_BOX_OFFICE="My url is here"
private static final String ARG_PARAM1 = "param1";
private static final String ARG_PARAM2 = "param2";
private RecyclerView listMovieHits;
// TODO: Rename and change types of parameters
private String mParam1;
private String mParam2;
/**
* Use this factory method to create a new instance of
* this fragment using the provided parameters.
*
* #param param1 Parameter 1.
* #param param2 Parameter 2.
* #return A new instance of fragment FragmentBoxOffice.
*/
public static FragmentBoxOffice newInstance(String param1, String param2) {
FragmentBoxOffice fragment = new FragmentBoxOffice();
Bundle args = new Bundle();
args.putString(ARG_PARAM1, param1);
args.putString(ARG_PARAM2, param2);
fragment.setArguments(args);
return fragment;
}
public static String getRequestUrl(int limit){
//ROTET_TOMATO_URL_BOX_OFFICE+"?apikey="+ MyApplication.ROTET_TOMATO_API_KEY+"&limit="+limit;
return UrlEndPoint.URL_BOX_OFFICE +
UrlEndPoint.URL_CHAR_QUASTIAN+
UrlEndPoint.URL_CHAR_PAREM_APIKEY +
MyApplication.ROTET_TOMATO_API_KEY +
UrlEndPoint.URL_CHAR_APPEND+
UrlEndPoint.URL_CHAR_PAREM_LIMIT + limit;
}
public FragmentBoxOffice() {
// Required empty public constructor
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (getArguments() != null) {
mParam1 = getArguments().getString(ARG_PARAM1);
mParam2 = getArguments().getString(ARG_PARAM2);
}
volleySingleton = VolleySingleton.getsInstance();
requestQueue = volleySingleton.getmRequestQueue();
senJsonRequest();
}
public void senJsonRequest(){
JsonObjectRequest request = new JsonObjectRequest(Request.Method.GET, getRequestUrl(10), (String)null, new Response.Listener<JSONObject>() {
#Override
public void onResponse(JSONObject response) {
paresJSONResponse(response);
listMovie =paresJSONResponse(response);
adupterBoxOffice.setMovieList(listMovie);
L.t(getActivity(), response.toString());
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
Toast.makeText(getActivity(),"Error"+error.getMessage(),Toast.LENGTH_SHORT).show();
}
});
requestQueue.add(request);
}
public ArrayList<Movies> paresJSONResponse(JSONObject response){
ArrayList<Movies> listMovie = new ArrayList<>();
if(response ==null|| response.length()==0 ){
return null;
}
try {
StringBuilder data = new StringBuilder();
JSONArray arrayMovie = response.getJSONArray(Keys.EndpointBoxOffice.KEY_MOVIES);
Log.v("BIKASH", "JSON Object id" + arrayMovie);
for(int i = 0; i<arrayMovie.length();i++){
JSONObject currentMovies= arrayMovie.getJSONObject(i);
Long id =currentMovies.getLong(Keys.EndpointBoxOffice.KEY_ID);
String title=currentMovies.getString(Keys.EndpointBoxOffice.KEY_TITLE);
JSONObject objectReleaseDates=currentMovies.getJSONObject(Keys.EndpointBoxOffice.KEY_RELEASE_DATES);
String releaseDate=null;
if(objectReleaseDates.has(Keys.EndpointBoxOffice.KEY_THEATER)){
releaseDate = objectReleaseDates.getString(Keys.EndpointBoxOffice.KEY_THEATER);
}
else {
releaseDate="NA";
}
int audianceRatting=-1;
JSONObject objectRatting = currentMovies.getJSONObject(Keys.EndpointBoxOffice.KEY_RATINGS);
{
if(objectRatting.has(Keys.EndpointBoxOffice.KEY_AUDIENCE_SCORE)){
audianceRatting=objectRatting.getInt(Keys.EndpointBoxOffice.KEY_AUDIENCE_SCORE);
}
}
String synuypsis = currentMovies.getString(Keys.EndpointBoxOffice.KEY_SYNOPSIS);
String urlThumbnel = null;
JSONObject objPoster = currentMovies.getJSONObject(Keys.EndpointBoxOffice.KEY_THUMBNAIL);
if(objPoster.has(Keys.EndpointBoxOffice.KEY_THUMBNAIL)){
urlThumbnel = objPoster.getString(Keys.EndpointBoxOffice.KEY_THUMBNAIL);
}
Movies movie =new Movies();
movie.setId(id);
movie.setTitle(title);
Date date = dateFormat.parse(releaseDate);
movie.setReleaseDateTheater(date);
movie.setAudienceScore(audianceRatting);
movie.setSynopsis(synuypsis);
movie.setUrlThumbnail(urlThumbnel);
listMovie.add(movie);
// data.append(id + "\n");
}
L.t(getActivity(),listMovie.toString());
} catch (JSONException e) {
e.printStackTrace();
} catch (ParseException e) {
e.printStackTrace();
}
return listMovie;
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view =inflater.inflate(R.layout.fragment_fragment_box_office, container, false);
listMovieHits =(RecyclerView)view.findViewById(R.id.listMovieHits);
listMovieHits.setLayoutManager(new LinearLayoutManager(getActivity()));
adupterBoxOffice = new AdupterBoxOffice(getActivity());
listMovieHits.setAdapter(adupterBoxOffice);
senJsonRequest();
return view;
}
}
My Adupter
import android.content.Context;
import android.support.v4.app.FragmentActivity;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.RatingBar;
import android.widget.TextView;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.ImageLoader;
import java.util.ArrayList;
import info.tatwa.model.Movies;
import info.tatwa.myfragment.FragmentBoxOffice;
import info.tatwa.network.VolleySingleton;
import info.tatwa.newnav.R;
public class AdupterBoxOffice extends RecyclerView.Adapter<AdupterBoxOffice.ViewHolderBoxOffice> {
private LayoutInflater layoutInflater;
FragmentBoxOffice activity;
private ArrayList<Movies> listMovie = new ArrayList<>();
private VolleySingleton volleySingleton;
private ImageLoader imageLoader;
public AdupterBoxOffice(Context context){
layoutInflater=LayoutInflater.from(context);
volleySingleton=VolleySingleton.getsInstance();
imageLoader = volleySingleton.getImageLoader();
}
public void setMovieList(ArrayList<Movies>listMovie){
this.listMovie = listMovie;
notifyItemRangeChanged(0,listMovie.size());
}
#Override
public ViewHolderBoxOffice onCreateViewHolder(ViewGroup parent, int viewType) {
layoutInflater = LayoutInflater.from(parent.getContext());
View view = layoutInflater.inflate(R.layout.movie_list_itom,parent,false);
ViewHolderBoxOffice viewHolder =new ViewHolderBoxOffice(view);
return viewHolder;
}
#Override
public void onBindViewHolder(final ViewHolderBoxOffice holder, int position) {
Movies currentMovie =listMovie.get(position);
holder.movieTitle.setText(currentMovie.getTitle());
holder.movieReleaseDate.setText(currentMovie.getReleaseDateTheater().toString());
holder.movieRatting.setRating(currentMovie.getAudienceScore()/20.0f);
String urlThumbnel = currentMovie.getUrlThumbnail();
if(urlThumbnel!=null){
imageLoader.get(urlThumbnel, new ImageLoader.ImageListener() {
#Override
public void onResponse(ImageLoader.ImageContainer response, boolean isImmediate) {
holder.imagePoster.setImageBitmap(response.getBitmap());
}
#Override
public void onErrorResponse(VolleyError error) {
}
});
}
}
#Override
public int getItemCount() {
return listMovie.size();
}
static class ViewHolderBoxOffice extends RecyclerView.ViewHolder {
private ImageView imagePoster;
private TextView movieTitle;
private TextView movieReleaseDate;
private RatingBar movieRatting;
public ViewHolderBoxOffice(View itemView) {
super(itemView);
imagePoster=(ImageView)itemView.findViewById(R.id.movieThumbnail);
movieTitle =(TextView)itemView.findViewById(R.id.movieTitle);
movieReleaseDate=(TextView)itemView.findViewById(R.id.movieReleaseDate);
movieRatting=(RatingBar)itemView.findViewById(R.id.movieAudienceScore);
}
}
}
And My Model class
import android.os.Parcel;
import android.os.Parcelable;
import java.util.Date;
public class Movies{
private long id;
private String title;
private Date releaseDateTheater;
private int audienceScore;
private String synopsis;
private String urlThumbnail;
private String urlSelf;
private String urlCast;
private String urlReviews;
private String urlSimilar;
public Movies() {
}
public Movies(long id,
String title,
Date releaseDateTheater,
int audienceScore,
String synopsis,
String urlThumbnail,
String urlSelf,
String urlCast,
String urlReviews,
String urlSimilar) {
this.id = id;
this.title = title;
this.releaseDateTheater = releaseDateTheater;
this.audienceScore = audienceScore;
this.synopsis = synopsis;
this.urlThumbnail = urlThumbnail;
this.urlSelf = urlSelf;
this.urlCast = urlCast;
this.urlReviews = urlReviews;
this.urlSimilar = urlSimilar;
}
public long getId() {
return id;
}
public void setId(long id) {
this.id = id;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public Date getReleaseDateTheater() {
return releaseDateTheater;
}
public void setReleaseDateTheater(Date releaseDateTheater) {
this.releaseDateTheater = releaseDateTheater;
}
public int getAudienceScore() {
return audienceScore;
}
public void setAudienceScore(int audienceScore) {
this.audienceScore = audienceScore;
}
public String getSynopsis() {
return synopsis;
}
public void setSynopsis(String synopsis) {
this.synopsis = synopsis;
}
public String getUrlThumbnail() {
return urlThumbnail;
}
public void setUrlThumbnail(String urlThumbnail) {
this.urlThumbnail = urlThumbnail;
}
public String getUrlSelf() {
return urlSelf;
}
public void setUrlSelf(String urlSelf) {
this.urlSelf = urlSelf;
}
public String getUrlCast() {
return urlCast;
}
public void setUrlCast(String urlCast) {
this.urlCast = urlCast;
}
public String getUrlReviews() {
return urlReviews;
}
public void setUrlReviews(String urlReviews) {
this.urlReviews = urlReviews;
}
public String getUrlSimilar() {
return urlSimilar;
}
public void setUrlSimilar(String urlSimilar) {
this.urlSimilar = urlSimilar;
}
#Override
public String toString() {
return "\nID: " + id +
"\nTitle " + title +
"\nDate " + releaseDateTheater +
"\nSynopsis " + synopsis +
"\nScore " + audienceScore +
"\nurlThumbnail " + urlThumbnail +
"\nurlSelf " + urlSelf +
"\nurlCast " + urlCast +
"\nurlReviews " + urlReviews +
"\nurlSimilar " + urlSimilar +
"\n";
}
}
Please help me out .. Thanks in advance ..

After adupterBoxOffice.setMovieList(listMovie);
try add adupterBoxOffice.notifyDataSetChanged();

I found my solution.I put some wrong key during pars the Json. That's why my ArrayList returning zero.
Many many thanks to all for helping me out.