recyclerview - swiperefreshlayout android studio

La vista del reciclador no se desplaza correctamente después de implementar deslizar para actualizar el diseño

Question

Antes de la implementación de la vista Deslizar para actualizar, la vista de reciclado funcionaba sin problemas, pero no siempre que intento desplazar la vista de reciclado hacia abajo, el deslizamiento para refrescar interfiere y dificulta el movimiento de desplazamiento.

Aquí está la captura de pantalla del problema:

(Observe que el diseño de deslizar para actualizar viene mientras la vista del reciclador se desplaza hacia abajo)

Aquí está mi fragmento de diseño:

<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.SwipeRefreshLayout
android:id="@+id/activity_main_swipe_refresh_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:wheel="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
xmlns:android="http://schemas.android.com/apk/res/android">
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v7.widget.RecyclerView
android:id="@+id/availableTaskRecyclerView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scrollbars="vertical" />
<RelativeLayout
android:id="@+id/progress_wheel"
android:visibility="gone"
tools:visibility="visible"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center_horizontal|center_vertical"
android:background="@color/transparentLoaderBackground">
<com.pnikosis.materialishprogress.ProgressWheel
android:layout_width="50dp"
android:layout_height="50dp"
wheel:matProg_barColor="@color/white"
wheel:matProg_barWidth="1dp"
wheel:matProg_progressIndeterminate="true"/>
</RelativeLayout>
<RelativeLayout
android:id="@+id/no_available_tasks"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:visibility="gone"
tools:visibility = "visible"
>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="No tasks currently available. Pull to refresh"
android:layout_centerInParent="true"
android:padding="16dp"
android:gravity="center_horizontal"
android:textSize="18sp"/>
</RelativeLayout>
</RelativeLayout>
</android.support.v4.widget.SwipeRefreshLayout>

Debajo está el código para mi fragmento:

package com.packrboy.fragments;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.widget.SwipeRefreshLayout;
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.RelativeLayout;
import com.android.volley.AuthFailureError;
import com.android.volley.NetworkError;
import com.android.volley.NetworkResponse;
import com.android.volley.NoConnectionError;
import com.android.volley.ParseError;
import com.android.volley.Request;
import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.ServerError;
import com.android.volley.TimeoutError;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.JsonObjectRequest;
import com.avast.android.dialogs.fragment.SimpleDialogFragment;
import com.packrboy.R;
import com.packrboy.activities.TaskActivity;
import com.packrboy.adapters.TaskAdapter;
import com.packrboy.classes.SharedPreferenceClass;
import com.packrboy.classes.Shipment;
import com.packrboy.network.VolleySingleton;
import com.pnikosis.materialishprogress.ProgressWheel;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import static com.packrboy.extras.Keys.Shipment.KEY_CREATED_AT;
import static com.packrboy.extras.Keys.Shipment.KEY_ID;
import static com.packrboy.extras.Keys.Shipment.KEY_IN_TRANSIT_STATUS;
import static com.packrboy.extras.Keys.Shipment.KEY_ITEM_IMAGE;
import static com.packrboy.extras.Keys.Shipment.KEY_ITEM_QUANTITY;
import static com.packrboy.extras.Keys.Shipment.KEY_PICKUP_CITY;
import static com.packrboy.extras.Keys.Shipment.KEY_PICKUP_LATITUDE;
import static com.packrboy.extras.Keys.Shipment.KEY_PICKUP_LONGITUDE;
import static com.packrboy.extras.Keys.Shipment.KEY_PICKUP_POSTAL_CODE;
import static com.packrboy.extras.Keys.Shipment.KEY_PICKUP_ROUTE;
import static com.packrboy.extras.Keys.Shipment.KEY_PICKUP_STATE;
import static com.packrboy.extras.Keys.Shipment.KEY_PICKUP_STREET_NO;
import static com.packrboy.extras.Keys.Shipment.KEY_SHIPMENT_ARRAY;
import static com.packrboy.extras.urlEndPoints.KEY_ASSIGN_DELIVERY;
import static com.packrboy.extras.urlEndPoints.KEY_ASSIGN_PICKUP;
import static com.packrboy.extras.urlEndPoints.KEY_AVAILABLE;
import static com.packrboy.extras.urlEndPoints.KEY_SHIPMENT_URL;
import static com.packrboy.extras.urlEndPoints.KEY_UAT_BASE_URL_API;
import static com.packrboy.extras.Keys.Shipment.KEY_TYPE;
import static com.packrboy.extras.Keys.Shipment.KEY_SHIPMENT;
import static com.packrboy.extras.Keys.ServiceKeys.KEY_ERROR_CODE;
/**
* Created by arindam.paaltao on 29-Jul-15.
*/
public class AvailableTaskFragment extends Fragment implements TaskAdapter.ClickListener{
private RecyclerView mRecyclerView;
private TaskAdapter mTaskAdapter;
private JSONArray shipmentListArray;
private TaskActivity activity;
private SharedPreferenceClass preferenceClass;
private ArrayList<Shipment> shipmentArrayList = new ArrayList<>();
int shipmentId;
String userId,transitStatus,requestType,streetNo,route,city,state,postalCode,imageURL,customerName,latitude,longitude,createdTime,updatedTime,itemQuantity;
View layout;
RelativeLayout progressWheel,noAvailableTasks;
private SwipeRefreshLayout mSwipeRefreshLayout;
public AvailableTaskFragment() {
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
layout = inflater.inflate(R.layout.available_task_fragment, container, false);
mSwipeRefreshLayout = (SwipeRefreshLayout)layout.findViewById(R.id.activity_main_swipe_refresh_layout);
preferenceClass = new SharedPreferenceClass(getActivity());
userId = preferenceClass.getCustomerId();
progressWheel = (RelativeLayout)layout.findViewById(R.id.progress_wheel);
noAvailableTasks = (RelativeLayout)layout.findViewById(R.id.no_available_tasks);
sendJsonRequest();
mRecyclerView = (RecyclerView) layout.findViewById(R.id.availableTaskRecyclerView);
mTaskAdapter = new TaskAdapter(getActivity(), activity);
mRecyclerView.setAdapter(mTaskAdapter);
mTaskAdapter.setClickListener(this);
mRecyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));
mSwipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
@Override
public void onRefresh() {
sendJsonRequest();
}
});
return layout;
}
public static String getRequestUrl(){
return KEY_UAT_BASE_URL_API + KEY_SHIPMENT_URL + KEY_AVAILABLE;
}
public void sendJsonRequest(){
progressWheel.setVisibility(View.VISIBLE);
final JSONObject testObject = new JSONObject();
try {
testObject.put("token", preferenceClass.getAccessToken());
} catch (JSONException e) {
e.printStackTrace();
}
RequestQueue requestQueue = VolleySingleton.getsInstance().getRequestQueue();
JsonObjectRequest jsonObjectRequest = new JsonObjectRequest(Request.Method.POST, getRequestUrl(), testObject, new Response.Listener<JSONObject>() {
@Override
public void onResponse(JSONObject jsonObject) {
if (mSwipeRefreshLayout.isRefreshing()){
mSwipeRefreshLayout.setRefreshing(false);
}
progressWheel.setVisibility(View.GONE);
Log.i("error", jsonObject.toString());
Log.i("login", testObject.toString());
shipmentArrayList = parseJsonResponse(jsonObject);
mTaskAdapter.setShipmentArrayList(shipmentArrayList);
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError volleyError) {
if (volleyError instanceof TimeoutError || volleyError instanceof NoConnectionError) {
} else if (volleyError instanceof AuthFailureError) {
//TODO
} else if (volleyError instanceof ServerError) {
//TODO
} else if (volleyError instanceof NetworkError) {
//TODO
} else if (volleyError instanceof ParseError) {
//TODO
}
}
}) {
@Override
protected Response<JSONObject> parseNetworkResponse(NetworkResponse response) {
return super.parseNetworkResponse(response);
}
@Override
public Map<String, String> getHeaders() throws AuthFailureError {
Map<String, String> headers = super.getHeaders();
if (headers == null
|| headers.equals(Collections.emptyMap())) {
headers = new HashMap<String, String>();
}
headers.put("Cookie", preferenceClass.getCookie());
return headers;
}
};
requestQueue.add(jsonObjectRequest);
}
public ArrayList<Shipment> parseJsonResponse(JSONObject response) {
ArrayList<Shipment> shipmentArrayList = new ArrayList<>();
if (response != null && response.length() > 0) {
try {
shipmentListArray = response.getJSONArray(KEY_SHIPMENT_ARRAY);
if (shipmentListArray.length() == 0){
if (noAvailableTasks.getVisibility() == View.GONE)
noAvailableTasks.setVisibility(View.VISIBLE);
}else {
if (noAvailableTasks.getVisibility() == View.VISIBLE)
noAvailableTasks.setVisibility(View.GONE);
for (int i = 0; i < shipmentListArray.length(); i++) {
JSONObject shipmentObject = shipmentListArray.getJSONObject(i);
if (shipmentObject.has(KEY_TYPE)) {
requestType = shipmentObject.getString(KEY_TYPE);
transitStatus = shipmentObject.getString(KEY_IN_TRANSIT_STATUS);
}
JSONObject shipmentDetails = new JSONObject();
shipmentDetails = shipmentObject.getJSONObject(KEY_SHIPMENT);
streetNo = shipmentDetails.getString(KEY_PICKUP_STREET_NO);
route = shipmentDetails.getString(KEY_PICKUP_ROUTE);
city = shipmentDetails.getString(KEY_PICKUP_CITY);
state = shipmentDetails.getString(KEY_PICKUP_STATE);
postalCode = shipmentDetails.getString(KEY_PICKUP_POSTAL_CODE);
imageURL = shipmentDetails.getString(KEY_ITEM_IMAGE);
latitude = shipmentDetails.getString(KEY_PICKUP_LATITUDE);
longitude = shipmentDetails.getString(KEY_PICKUP_LONGITUDE);
createdTime = shipmentDetails.getString(KEY_CREATED_AT);
itemQuantity = shipmentDetails.getString(KEY_ITEM_QUANTITY);
shipmentId = Integer.parseInt(shipmentDetails.getString(KEY_ID));
Shipment current = new Shipment();
current.setImageURL(imageURL);
current.setCity(city);
current.setCreatedTime(createdTime);
current.setLatitude(Double.parseDouble(latitude));
current.setLongitude(Double.parseDouble(longitude));
current.setPostalCode(postalCode);
current.setState(state);
current.setStreetNo(streetNo);
current.setRoute(route);
current.setRequestType(requestType);
current.setItemQuantity(itemQuantity);
current.setItemId(shipmentId);
current.setTransitStatus(transitStatus);
shipmentArrayList.add(current);
}
}
} catch (JSONException e) {
e.printStackTrace();
}
}
return shipmentArrayList;
}
public static String getAcceptRequestRequestUrl(){
return KEY_UAT_BASE_URL_API + KEY_SHIPMENT_URL + KEY_ASSIGN_PICKUP;
}
public void sendAcceptRequestJsonRequest(){
final JSONObject shipmentObject = new JSONObject();
final JSONObject pendingTaskObject = new JSONObject();
try {
shipmentObject.put("packrboy_id", userId);
shipmentObject.put("shipment_id", shipmentId);
pendingTaskObject.put("payload", shipmentObject);
pendingTaskObject.put("token", preferenceClass.getAccessToken());
} catch (JSONException e) {
e.printStackTrace();
}
RequestQueue requestQueue = VolleySingleton.getsInstance().getRequestQueue();
JsonObjectRequest jsonObjectRequest = new JsonObjectRequest(Request.Method.POST, getAcceptRequestRequestUrl(), pendingTaskObject, new Response.Listener<JSONObject>() {
@Override
public void onResponse(JSONObject jsonObject) {
Log.i("error", jsonObject.toString());
Log.i("login", pendingTaskObject.toString());
if (jsonObject.has(KEY_ERROR_CODE)){
try {
String errorCode = jsonObject.getString(KEY_ERROR_CODE);
if (errorCode.contentEquals("200")){
SimpleDialogFragment.createBuilder(getActivity(), getFragmentManager()).setTitle("Request Accepted").setMessage(R.string.pickup_request_accepted).show();
}
else {
SimpleDialogFragment.createBuilder(getActivity(), getFragmentManager()).setTitle("Request cannot be accepted").setMessage(R.string.pickup_request_not_allowed).show();
}
} catch (JSONException e) {
e.printStackTrace();
}
}
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError volleyError) {
if (volleyError instanceof TimeoutError || volleyError instanceof NoConnectionError) {
} else if (volleyError instanceof AuthFailureError) {
//TODO
} else if (volleyError instanceof ServerError) {
//TODO
} else if (volleyError instanceof NetworkError) {
//TODO
} else if (volleyError instanceof ParseError) {
//TODO
}
}
}) {
@Override
protected Response<JSONObject> parseNetworkResponse(NetworkResponse response) {
return super.parseNetworkResponse(response);
}
@Override
public Map<String, String> getHeaders() throws AuthFailureError {
Map<String, String> headers = super.getHeaders();
if (headers == null
|| headers.equals(Collections.emptyMap())) {
headers = new HashMap<String, String>();
}
headers.put("Cookie", preferenceClass.getCookie());
return headers;
}
};
requestQueue.add(jsonObjectRequest);
}
public static String getAcceptDeliveryRequestRequestUrl(){
return KEY_UAT_BASE_URL_API + KEY_SHIPMENT_URL + KEY_ASSIGN_DELIVERY;
}
public void sendAcceptDeliveryRequestJsonRequest(){
final JSONObject shipmentObject = new JSONObject();
final JSONObject pendingTaskObject = new JSONObject();
try {
shipmentObject.put("packrboy_id", userId);
shipmentObject.put("shipment_id", shipmentId);
pendingTaskObject.put("payload", shipmentObject);
pendingTaskObject.put("token", preferenceClass.getAccessToken());
} catch (JSONException e) {
e.printStackTrace();
}
RequestQueue requestQueue = VolleySingleton.getsInstance().getRequestQueue();
JsonObjectRequest jsonObjectRequest = new JsonObjectRequest(Request.Method.POST, getAcceptDeliveryRequestRequestUrl(), pendingTaskObject, new Response.Listener<JSONObject>() {
@Override
public void onResponse(JSONObject jsonObject) {
Log.i("error", jsonObject.toString());
Log.i("login", pendingTaskObject.toString());
if (jsonObject.has(KEY_ERROR_CODE)){
try {
String errorCode = jsonObject.getString(KEY_ERROR_CODE);
if (errorCode.contentEquals("200")){
SimpleDialogFragment.createBuilder(getActivity(), getFragmentManager()).setTitle("Request Accepted").setMessage("Delivery request has been accepted").show();
}
else {
SimpleDialogFragment.createBuilder(getActivity(), getFragmentManager()).setTitle("Request cannot be accepted").setMessage("The request cannot be accepted").show();
}
} catch (JSONException e) {
e.printStackTrace();
}
}
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError volleyError) {
if (volleyError instanceof TimeoutError || volleyError instanceof NoConnectionError) {
} else if (volleyError instanceof AuthFailureError) {
//TODO
} else if (volleyError instanceof ServerError) {
//TODO
} else if (volleyError instanceof NetworkError) {
//TODO
} else if (volleyError instanceof ParseError) {
//TODO
}
}
}) {
@Override
protected Response<JSONObject> parseNetworkResponse(NetworkResponse response) {
return super.parseNetworkResponse(response);
}
@Override
public Map<String, String> getHeaders() throws AuthFailureError {
Map<String, String> headers = super.getHeaders();
if (headers == null
|| headers.equals(Collections.emptyMap())) {
headers = new HashMap<String, String>();
}
headers.put("Cookie", preferenceClass.getCookie());
return headers;
}
};
requestQueue.add(jsonObjectRequest);
}
@Override
public void itemClicked(View view, int position) {
shipmentId = shipmentArrayList.get(position).getItemId();
if (shipmentArrayList.get(position).getRequestType().contentEquals("pickup")){
sendAcceptRequestJsonRequest();}
else{
sendAcceptDeliveryRequestJsonRequest();
}
}
}

También implementé el diseño del coordinador en el diseño de la actividad. Aquí está el código:

<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">
<include
layout="@layout/toolbar"
android:id="@+id/toolbar"/>
<android.support.design.widget.TabLayout
android:id="@+id/sliding_tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:tabMode="scrollable"
app:tabGravity="fill" />
</android.support.design.widget.AppBarLayout>
<android.support.v4.view.ViewPager
android:id="@+id/viewPager"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="@string/appbar_scrolling_view_behavior" />
</android.support.design.widget.CoordinatorLayout>

¿Puedes ayudarme a resolver este problema? Será de gran ayuda. Gracias por adelantado.

Answer 1

Este es un problema conocido y me pregunto por qué esto no se ha solucionado ya. El problema aquí es que SwipeRefreshLayout siempre asume que la lista no puede desplazarse hacia arriba más.

Una solución es extender SwipeRefreshLayout y anular canChildScrollUp() . Este método se llama cuando comienzas a desplazarte y devuelves falso aquí cuando la lista no está en su posición más alta.

A continuación, use este método de utilidad para determinar si su RecyclerView puede desplazarse o no hacia arriba:

/**
* Returns whether or not a View can scroll vertically any further.
* @param downwardScroll The direction to check for. Pass true for downwards and
* false for upward. Note that downward scroll == upward swipe
* */
public static boolean canScrollVerticallyAnyFurther(View view, boolean downwardScroll){
return view.canScrollVertically(downwardScroll ? +1 : -1);
}

Answer 2

Lo solucioné yo mismo finalmente.

El problema radica en el diseño xml en sí. La vista de reciclador debe ser un elemento secundario único dentro de un diseño SwipeToReferesh.

El archivo de diseño debe ser el siguiente:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:wheel="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v4.widget.SwipeRefreshLayout
android:id="@+id/activity_main_swipe_refresh_layout"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v7.widget.RecyclerView
android:id="@+id/completedTaskRecyclerView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:scrollbars="vertical" />
</android.support.v4.widget.SwipeRefreshLayout>
<com.pnikosis.materialishprogress.ProgressWheel
android:id="@+id/progress_wheel"
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:visibility="gone"
tools:visibility="visible"
wheel:matProg_barColor="@color/colorAccent"
wheel:matProg_barWidth="1dp"
wheel:matProg_progressIndeterminate="true" />
<TextView
android:id="@+id/no_available_tasks"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:gravity="center_horizontal|center_vertical"
android:padding="16dp"
android:text="No tasks currently available. Pull to refresh"
android:textSize="18sp"
android:visibility="gone"
tools:visibility="visible" />
</RelativeLayout>

No es necesario agregar algunas otras clases de utilidad o anular el método canChildScrollUp () de SwipeToRefesh.

Answer 3

Me las arreglé para implementar Deslizar hacia abajo para actualizar y desplazamiento infinito. Si alguien está interesado, echa un vistazo. Puedes ver la implementación de esto en

https://github.com/snijsure/TwitterSample

Aunque desde la perspectiva de UX no estoy seguro de si es recomendable usar SwipeDown para actualizar y refrescar al final del desplazamiento, podría ser confuso para el usuario final.

¡Aclamaciones!