When ever I try to send messages from device to device the app works fine a ,But when ever i try to react in a message the app crashes and returns back to main activity page, i don't know what is causing the error
here is the messageAdapter.java code :
package com.example.baatcheet.Adapters;
import com.bumptech.glide.Glide;
import com.example.baatcheet.Models.Message;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import androidx.annotation.NonNull;
import androidx.recyclerview.widget.RecyclerView;
import com.example.baatcheet.R;
import com.example.baatcheet.databinding.ItemReceiveBinding;
import com.example.baatcheet.databinding.ItemSentBinding;
import com.github.pgreze.reactions.ReactionPopup;
import com.github.pgreze.reactions.ReactionsConfig;
import com.github.pgreze.reactions.ReactionsConfigBuilder;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.database.FirebaseDatabase;
import java.util.ArrayList;
public class MessagesAdapter extends RecyclerView.Adapter {
Context context;
ArrayList<Message> messages;
final int ITEM_SENT = 1;
final int ITEM_RECEIVE = 2;
String senderRoom;
String receiverRoom;
public MessagesAdapter(Context context , ArrayList<Message> messages , String senderRoom , String receiverRoom){
this.context = context;
this.messages = messages;
this.senderRoom = senderRoom;
this.receiverRoom = receiverRoom;
}
@NonNull
@Override
public RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
if(viewType == ITEM_SENT){
View view = LayoutInflater.from(context).inflate(R.layout.item_sent, parent, false);
return new SentViewHolder(view);
}else{
View view = LayoutInflater.from(context).inflate(R.layout.item_receive, parent, false);
return new ReceiverViewHolder(view);
}
}
@Override
public int getItemViewType(int position) {
Message message = messages.get(position);
if(FirebaseAuth.getInstance().getUid().equals(message.getSenderId())){
return ITEM_SENT;
}else{
return ITEM_RECEIVE;
}
}
@Override
public void onBindViewHolder(@NonNull RecyclerView.ViewHolder holder, int position) {
Message message = messages.get(position);
int[] reactions = new int[]{
R.drawable.ic_fb_like,
R.drawable.ic_fb_love,
R.drawable.ic_fb_laugh,
R.drawable.ic_fb_wow,
R.drawable.ic_fb_sad,
R.drawable.ic_fb_angry
};
ReactionsConfig config = new ReactionsConfigBuilder(context)
.withReactions(reactions)
.build();
ReactionPopup popup = new ReactionPopup(context, config, (pos) -> {
if(holder.getClass() == SentViewHolder.class){
SentViewHolder viewHolder = (SentViewHolder)holder;
if(pos >= 0 && pos <= 6) {
viewHolder.binding.feeling.setImageResource(reactions[pos]);
viewHolder.binding.feeling.setVisibility(View.VISIBLE);
}
}else {
ReceiverViewHolder viewHolder = (ReceiverViewHolder) holder;
if (pos >= 0 && pos <= 6) {
viewHolder.binding.feeling.setImageResource(reactions[pos]);
viewHolder.binding.feeling.setVisibility(View.VISIBLE);
}
}
message.setFeeling(pos);
FirebaseDatabase.getInstance().getReference()
.child("chats")
.child(senderRoom)
.child("messages")
.child(message.getMessageId())
.setValue(message);
FirebaseDatabase.getInstance().getReference()
.child("chats")
.child(receiverRoom)
.child("messages")
.child(message.getMessageId())
.setValue(message);
return true; // true is closing popup, false is requesting a new selection
});
if(holder.getClass() == SentViewHolder.class){
SentViewHolder viewHolder = (SentViewHolder)holder;
viewHolder.binding.message.setText(message.getMessage());
if(message.getFeeling() >= 0){
// message.setFeeling(reactions[(int)message.getFeeling()]);
viewHolder.binding.feeling.setImageResource(reactions[message.getFeeling()]);
viewHolder.binding.feeling.setVisibility(View.VISIBLE);
}
else{
viewHolder.binding.feeling.setVisibility(View.GONE);
}
viewHolder.binding.message.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
popup.onTouch(v,event);
return false;
}
});
}else{
ReceiverViewHolder viewHolder = (ReceiverViewHolder) holder;
viewHolder.binding.message.setText(message.getMessage());
if(message.getFeeling() >= 0){
// message.setFeeling(reactions[(int)message.getFeeling()]);
viewHolder.binding.feeling.setImageResource(reactions[message.getFeeling()]);
viewHolder.binding.feeling.setVisibility(View.VISIBLE);
}
else{
viewHolder.binding.feeling.setVisibility(View.GONE);
}
viewHolder.binding.message.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
popup.onTouch(v,event);
return false;
}
});
}
}
@Override
public int getItemCount() {
return messages.size();
}
public class SentViewHolder extends RecyclerView.ViewHolder{
ItemSentBinding binding;
public SentViewHolder(@NonNull View itemView) {
super(itemView);
binding = ItemSentBinding.bind(itemView);
}
}
public class ReceiverViewHolder extends RecyclerView.ViewHolder{
ItemReceiveBinding binding;
public ReceiverViewHolder(@NonNull View itemView) {
super(itemView);
binding = ItemReceiveBinding.bind(itemView);
}
}
}
Here is the getter and setter class for above adapter class , messgaes.java :
package com.example.baatcheet.Models;
public class Message {
private String messageId , message , senderId;
private long timeStamp;
private int feeling = -1;
public String imageUrl;
public Message() {
}
public Message(String message, String senderId, long timeStamp) {
this.message = message;
this.senderId = senderId;
this.timeStamp = timeStamp;
}
public void setMessageId(String messageId) {
this.messageId = messageId;
}
public void setMessage(String message) {
this.message = message;
}
public void setSenderId(String senderId) {
this.senderId = senderId;
}
public void setTimeStamp(long timeStamp) {
this.timeStamp = timeStamp;
}
public void setFeeling(int feeling) {
this.feeling = feeling;
}
public String getImageUrl() {
return imageUrl;
}
public void setImageUrl(String imageUrl) {
this.imageUrl = imageUrl;
}
public String getMessageId() {
return messageId;
}
public String getMessage() {
return message;
}
public String getSenderId() {
return senderId;
}
public long getTimeStamp() {
return timeStamp;
}
public int getFeeling() {
return feeling;
}
}
I dont actually know where my app is getting crashed
the logcat shows the following error when ever i try to react on a message
[samsung-sm_m305f-52001052ca7b863f]: E/InputEventReceiver: Exception dispatching input event.
[samsung-sm_m305f-52001052ca7b863f]: E/MessageQueue-JNI: Exception in MessageQueue callback: handleReceiveCallback
[samsung-sm_m305f-52001052ca7b863f]: E/MessageQueue-JNI: java.lang.NullPointerException: Can't pass null for argument 'pathString' in child()
at com.google.firebase.database.DatabaseReference.child(DatabaseReference.java:96)
at com.example.baatcheet.Adapters.MessagesAdapter.lambda$onBindViewHolder$0$com-example-baatcheet-Adapters-MessagesAdapter(MessagesAdapter.java:104)
at com.example.baatcheet.Adapters.MessagesAdapter$$ExternalSyntheticLambda0.invoke(Unknown Source:10)
at com.github.pgreze.reactions.ReactionViewGroup.onTouchEvent(ReactionViewGroup.kt:247)
at android.view.View.dispatchTouchEvent(View.java:14376)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:3857)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:3535)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:3863)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:3551)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:3863)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:3551)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:3863)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:3551)
at android.widget.PopupWindow$PopupDecorView.dispatchTouchEvent(PopupWindow.java:2850)
at android.view.View.dispatchPointerEvent(View.java:14644)
at android.view.ViewRootImpl$ViewPostImeInputStage.processPointerEvent(ViewRootImpl.java:6486)
at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess(ViewRootImpl.java:6273)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:5711)
at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:5764)
at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:5730)
at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:5886)
at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:5738)
at android.view.ViewRootImpl$AsyncInputStage.apply(ViewRootImpl.java:5943)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:5711)
at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:5764)
at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:5730)
at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:5738)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:5711)
at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:8870)
at android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:8731)
at android.view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:8684)
at android.view.ViewRootImpl$WindowInputEventReceiver.onInputEvent(ViewRootImpl.java:9006)
at android.view.InputEventReceiver.dispatchInputEvent(InputEventReceiver.java:194)
at android.os.MessageQueue.nativePollOnce(Native Method)
at android.os.MessageQueue.next(MessageQueue.java:336)
at android.os.Looper.loop(Looper.java:197)
at android.app.ActivityThread.main(ActivityThread.java:7807)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1047)
[samsung-sm_m305f-52001052ca7b863f]: D/AndroidRuntime: Shutting down VM
[samsung-sm_m305f-52001052ca7b863f]: E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.baatcheet, PID: 28114
java.lang.NullPointerException: Can't pass null for argument 'pathString' in child()
at com.google.firebase.database.DatabaseReference.child(DatabaseReference.java:96)
at com.example.baatcheet.Adapters.MessagesAdapter.lambda$onBindViewHolder$0$com-example-baatcheet-Adapters-MessagesAdapter(MessagesAdapter.java:104)
at com.example.baatcheet.Adapters.MessagesAdapter$$ExternalSyntheticLambda0.invoke(Unknown Source:10)
at com.github.pgreze.reactions.ReactionViewGroup.onTouchEvent(ReactionViewGroup.kt:247)
at android.view.View.dispatchTouchEvent(View.java:14376)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:3857)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:3535)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:3863)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:3551)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:3863)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:3551)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:3863)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:3551)
at android.widget.PopupWindow$PopupDecorView.dispatchTouchEvent(PopupWindow.java:2850)
at android.view.View.dispatchPointerEvent(View.java:14644)
at android.view.ViewRootImpl$ViewPostImeInputStage.processPointerEvent(ViewRootImpl.java:6486)
at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess(ViewRootImpl.java:6273)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:5711)
at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:5764)
at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:5730)
at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:5886)
at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:5738)
at android.view.ViewRootImpl$AsyncInputStage.apply(ViewRootImpl.java:5943)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:5711)
at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:5764)
at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:5730)
at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:5738)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:5711)
at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:8870)
at android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:8731)
at android.view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:8684)
at android.view.ViewRootImpl$WindowInputEventReceiver.onInputEvent(ViewRootImpl.java:9006)
at android.view.InputEventReceiver.dispatchInputEvent(InputEventReceiver.java:194)
at android.os.MessageQueue.nativePollOnce(Native Method)
at android.os.MessageQueue.next(MessageQueue.java:336)
at android.os.Looper.loop(Looper.java:197)
at android.app.ActivityThread.main(ActivityThread.java:7807)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1047)
CodePudding user response：
You have a NPE for the argument pathString but I cannot find it in your code. You should add a null-check to the relevant part and see if it works.
E/MessageQueue-JNI: java.lang.NullPointerException: Can't pass null for argument 'pathString' in child()