I'm having a big issue, I do not know what's happening, I've uploaded an app to Play Store because when I was running it on an Emulator or even on my real device it wasn't crashing, but now when I download it from Google Play it says :
java.lang.NullPointerException:
at com..onBindViewHolder (ChooseCard.java)
or .onCreateViewHolder (ChooseCard.java)
at com..onBindViewHolder (ChooseCard.java)
or .onCreateViewHolder (ChooseCard.java)
at com.firebase.ui.database.FirebaseRecyclerAdapter.getItemCount (FirebaseRecyclerAdapter.java)
or .onBindViewHolder (FirebaseRecyclerAdapter.java)
or .onChildChanged (FirebaseRecyclerAdapter.java)
or .onError (FirebaseRecyclerAdapter.java)
at com.yarolegovich.discretescrollview.InfiniteScrollAdapter.access$100 (InfiniteScrollAdapter.java)
or .getItemCount (InfiniteScrollAdapter.java)
or .getItemViewType (InfiniteScrollAdapter.java)
or .onAttachedToRecyclerView (InfiniteScrollAdapter.java)
or .onBindViewHolder (InfiniteScrollAdapter.java)
or .onCreateViewHolder (InfiniteScrollAdapter.java)
or .wrap (InfiniteScrollAdapter.java)
It's been days with this issue and I can't find it out, could you give me a hand please?
There's my build.gradle implementations
implementation fileTree(include: ['*.jar'], dir: 'libs')
implementation 'com.android.support:appcompat-v7:27.1.1'
implementation 'com.android.support.constraint:constraint-layout:1.1.0'
implementation 'com.android.support:design:27.1.1'
implementation 'com.intuit.sdp:sdp-android:1.0.4'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'com.android.support.test:runner:1.0.1'
androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
implementation 'com.android.support:cardview-v7:27.1.1'
implementation 'com.google.firebase:firebase-core:15.0.0'
implementation 'com.google.firebase:firebase-auth:15.0.0'
implementation 'com.google.android.gms:play-services-auth:15.0.0'
implementation 'com.google.firebase:firebase-database:15.0.0'
implementation 'com.anjlab.android.iab.v3:library:1.0.44'
implementation 'com.firebaseui:firebase-ui-database:3.3.1'
implementation 'com.onesignal:OneSignal:3.7.1'
implementation 'com.yarolegovich:discrete-scrollview:1.3.2'
implementation 'com.pranavpandey.android:dynamic-toasts:0.9.0'
implementation 'pl.droidsonroids.gif:android-gif-drawable:1.2.11'
implementation 'com.google.android.gms:play-services-analytics:15.0.0'
.....
dependencies {
classpath 'com.android.tools.build:gradle:3.1.2'
classpath 'com.google.gms:google-services:3.2.1'
I've updated my app on Google Play and nothing happens, still crashing on the same Activity, I do now know what to do to debug this, the problem is when I download the app from Google Play, on Emulator (even in a new emulator device is not crashing) and on my real device.
As @Marcos Vascondelos said, I did Build > Genereate Signed APK > get the app-release.apk install it on my device and the problem is that I can not login it is going to this method :
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
// Result returned from launching the Intent from GoogleSignInApi.getSignInIntent(...);
if (requestCode == RC_SIGN_IN) {
Task<GoogleSignInAccount> task = GoogleSignIn.getSignedInAccountFromIntent(data);
try {
// Google Sign In was successful, authenticate with Firebase
GoogleSignInAccount account = task.getResult(ApiException.class);
firebaseAuthWithGoogle(account);
} catch (ApiException e) {
// Google Sign In failed, update UI appropriately
Log.w(TAG, "Google sign in failed", e.getCause());
Toast with e.getCause is null
}
}
}
If you want to see how do I login to not put more code on this question I put on this GitHubGist
I've read that it could be problems with SHA-1, but I don't know why on emulator is ok, device is ok, Google play is ok, but if I install the .apk directly it says null.
I see the problem is not on the Firebase call, is on the populate the list, I mean the products are caught correctly, but when I try to put into the list is where it crashes
My FirebaseRecyclerOptions adapter looks like
final FirebaseRecyclerOptions< CardPOJO > options =
new FirebaseRecyclerOptions.Builder< CardPOJO >()
.setQuery(products_ref, CardPOJO.class)
.build();
adapter = new FirebaseRecyclerAdapter< CardPOJO, CardHolder>(options) {
@Override
public CardHolder onCreateViewHolder(ViewGroup parent, int viewType) {
//inflate the single recycler view layout(item)
View view = LayoutInflater.from(parent.getContext())
.inflate(R.layout.card_product, parent, false);
final CardHolder cardViewHolder = new CardHolder(view);
return cardViewHolder;
}
@Override
public void onDataChanged() {
super.onDataChanged();
if(progressDialog!=null)progressDialog.dismiss();initViews();
}
@Override
protected void onBindViewHolder(final CardHolder holder, int position, final CardPOJO model) {
holder.itemView.setSelected(0== position); ////where you are in the list
holder.getLayoutPosition();
switch (model.getState()){
case "free":
holder.card_image.setImageResource();
break;
case "not_free":
if(userOwnsProduct(model.getProduct_id())){
holder.card_image.setImageResource();
}
else{
holder.card_image.setImageResource();
}
break;
default:
break;
}
holder.view.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if(model.getState().equals("free")){
//normal stuff1
}
else{
if (!readyToPurchase) {
DynamicToast.makeError(mContext,"Problems with Google Play",Toast.LENGTH_SHORT).show();
return;
}
root_ref.child("PurchasedProducts").child(currentUser).addValueEventListener(new ValueEventListener() {
@Override
public void onDataChange(DataSnapshot dataSnapshot) {
if(dataSnapshot.hasChild(model.getProduct_id())){
//Normal stuff
}
else{
bp.purchase((Activity) mContext,model.getProduct_id());
}
}
@Override
public void onCancelled(DatabaseError databaseError) {
}
});
}
}
});
}
};
adapter.startListening();
infiniteAdapter = InfiniteScrollAdapter.wrap(adapter);
itemPicker.setAdapter(infiniteAdapter);
//.setItemTransitionTimeMillis(DiscreteScrollViewOptions.getTransitionTime());
itemPicker.setItemTransformer(new ScaleTransformer.Builder()
.setMinScale(0.5f)
.build());
The problem was when using Proguard, I did not use @Keep on my pojo classes, so when trying to serialize the class with firebase database wasn't finding the attributes because they were obfuscates.