Android Studio..Application Crashes when deployed apk

Question

When i run my application directly from android studio with a real device..it works fine...but when i build apk and run it then during user registeration it crashes...

public void storeDataToFirebase(){
        progressDialog.setMessage("Storing Data to Database");
        User user=new User(USERNAME,EMAIL,gender,AGE,NUMBER,BG,PASSWORD);
         userEmail=mAuth.getCurrentUser().getEmail();

        assert email != null;
        FirebaseDatabase.getInstance().getReference().child("Users")
                   .child(userEmail.replace(".","_")).setValue(user).addOnCompleteListener(new OnCompleteListener<Void>() {
               @Override
               public void onComplete(@NonNull Task<Void> task) {
                   if (task.isSuccessful()) {
                       Toast.makeText(MainActivity.this, "Data inserted", Toast.LENGTH_SHORT).show();
                   }
                   else {
                       Toast.makeText(MainActivity.this, "Data insertion failed", Toast.LENGTH_SHORT).show();
                   }
               }
           });

        }

LogCat...

muhammadobaid.blooddonationsystem E/AndroidRuntime: FATAL EXCEPTION: main Process: com.example.muhammadobaid.blooddonationsystem, PID: 4273 com.google.firebase.database.DatabaseException: No properties to serialize found on class com.example.muhammadobaid.blooddonationsystem.Model.User at com.google.android.gms.internal.zzekq.(Unknown Source) at com.google.android.gms.internal.zzekp.zzf(Unknown Source) at com.google.android.gms.internal.zzekp.zzbw(Unknown Source) at com.google.android.gms.internal.zzekp.zzbv(Unknown Source) at com.google.firebase.database.DatabaseReference.zza(Unknown Source) at com.google.firebase.database.DatabaseReference.setValue(Unknown Source) at com.example.muhammadobaid.blooddonationsystem.MainActivity.storeDataToFirebase(MainActivity.java:111) at com.example.muhammadobaid.blooddonationsystem.MainActivity$1$1.onComplete(MainActivity.java:57) at com.google.android.gms.tasks.zzf.run(Unknown Source) at android.os.Handler.handleCallback(Handler.java:815) at android.os.Handler.dispatchMessage(Handler.java:104) at android.os.Looper.loop(Looper.java:214) at android.app.ActivityThread.main(ActivityThread.java:6102) at java.lang.reflect.Method.invoke(Native Method) at java.lang.reflect.Method.invoke(Method.java:372) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1028) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:823)

it works fine when run from android studio using real device.. — muhammad obaid, Feb 07 '18 at 20:54

score 0 · Answer 1 · answered Feb 07 '18 at 21:10

public class User {

    public String username;
    public String email;
    public String gender;
    public   String age;
    public String number;
    public String bloodGroup;
    public String password;

    public User(String username, String email, String gender, String age, String number, String bloodGroup, String password) {
        this.username = username;
        this.email = email;
        this.gender = gender;
        this.age = age;
        this.number = number;
        this.bloodGroup = bloodGroup;
        this.password = password;
    }
}

I made my user class variables as public..Which solves my problem..

It Helps...Firebase No properties to serialize found on class

Android Studio..Application Crashes when deployed apk

1 Answers1