Ich versuche mit der setValue-Funktion ein von mir definiertes Benutzerobjekt an die Firebase-Datenbank zu senden, aber ohne Erfolg. Selbst das Dokumentationsbeispiel here funktioniert nicht für mich. Ich erhalte diesen FehlerFirebase setValue funktioniert nicht, "Fehler beim Analysieren des Snapshots"
Fehler beim Parsen
Mein Code Schnappschuss:
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import com.firebase.client.Firebase;
public class User extends AppCompatActivity {
private int birthYear;
private String fullName;
public User() {
}
public User(String fullName, int birthYear) {
this.fullName = fullName;
this.birthYear = birthYear;
}
public long getBirthYear() {
return birthYear;
}
public String getFullName() {
return fullName;
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_user);
Firebase.setAndroidContext(this);
Firebase ref = new Firebase("https://mybabysit.firebaseio.com/");
Firebase alanRef = ref.child("users").child("alanisawesome");
User alan = new User("Alan Turing", 1912);
alanRef.setValue(alan);
}
}
ich folgende Fehlermeldungen erhalten:
AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.lerun.crazybugs, PID: 4243
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.lerun.crazybugs/com.example.lerun.crazybugs.User}: com.firebase.client.FirebaseException: Failed to parse to snapshot
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2416)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)
at android.app.ActivityThread.-wrap11(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
Caused by: com.firebase.client.FirebaseException: Failed to parse to snapshot
at com.firebase.client.Firebase.setValueInternal(Firebase.java:357)
at com.firebase.client.Firebase.setValue(Firebase.java:248)
at com.example.lerun.crazybugs.User.onCreate(User.java:38)
at android.app.Activity.performCreate(Activity.java:6237)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1107)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2369)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)
at android.app.ActivityThread.-wrap11(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
Caused by: java.lang.IllegalArgumentException: Conflicting getter definitions for property "changingConfigurations": android.app.Activity#isChangingConfigurations(0 params) vs android.app.Activity#getChangingConfigurations(0 params)
at com.fasterxml.jackson.databind.ObjectMapper._convert(ObjectMapper.java:2615)
at com.fasterxml.jackson.databind.ObjectMapper.convertValue(ObjectMapper.java:2542)
at com.firebase.client.Firebase.setValueInternal(Firebase.java:346)
at com.firebase.client.Firebase.setValue(Firebase.java:248)
at com.example.lerun.crazybugs.User.onCreate(User.java:38)
at android.app.Activity.performCreate(Activity.java:6237)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1107)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2369)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)
at android.app.ActivityThread.-wrap11(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
Caused by: com.fasterxml.jackson.databind.JsonMappingException: Conflicting getter definitions for property "changingConfigurations": android.app.Activity#isChangingConfigurations(0 params) vs android.app.Activity#getChangingConfigurations(0 params)
at com.fasterxml.jackson.databind.SerializerProvider._createAndCacheUntypedSerializer(SerializerProvider.java:838)
at com.fasterxml.jackson.databind.SerializerProvider.findValueSerializer(SerializerProvider.java:387)
at com.fasterxml.jackson.databind.SerializerProvider.findTypedValueSerializer(SerializerProvider.java:478)
at com.fasterxml.jackson.databind.ser.DefaultSerializerProvider.serializeValue(DefaultSerializerProvider.java:97)
at com.fasterxml.jackson.databind.ObjectMapper._convert(ObjectMapper.java:2593)
at com.fasterxml.jackson.databind.ObjectMapper.convertValue(ObjectMapper.java:2542)
at com.firebase.client.Firebase.setValueInternal(Firebase.java:346)
at com.firebase.client.Firebase.setValue(Firebase.java:248)
at com.example.lerun.crazybugs.User.onCreate(User.java:38)
at android.app.Activity.performCreate(Activity.java:6237)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1107)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2369)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)
at android.app.ActivityThread.-wrap11(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
Caused by: java.lang.IllegalArgumentException: Conflicting getter definitions for property "changingConfigurations": android.app.Activity#isChangingConfigurations(0 params) vs android.app.Activity#getChangingConfigurations(0 params)
at com.fasterxml.jackson.databind.introspect.POJOPropertyBuilder.getGetter(POJOPropertyBuilder.java:190)
at com.fasterxml.jackson.databind.introspect.POJOPropertyBuilder.getAccessor(POJOPropertyBuilder.java:283)
at com.fasterxml.jackson.databind.ser.BeanSerializerFactory.removeIgnorableTypes(BeanSerializerFactory.java:678)
at com.fasterxml.jackson.databind.ser.BeanSerializerFactory.findBeanProperties(BeanSerializerFactory.java:557)
at com.fasterxml.jackson.databind.ser.BeanSerializerFactory.constructBeanSerializer(BeanSerializerFactory.java:373)
at com.fasterxml.jackson.databind.ser.BeanSerializerFactory.findBeanSerializer(BeanSerializerFactory.java:268)
at com.fasterxml.jackson.databind.ser.BeanSerializerFactory._createSerializer2(BeanSerializerFactory.java:213)
at com.fasterxml.jackson.databind.ser.BeanSerializerFactory.createSerializer(BeanSerializerFactory.java:152)
at com.fasterxml.jackson.databind.SerializerProvider._createUntypedSerializer(SerializerProvider.java:873)
at com.fasterxml.jackson.databind.SerializerProvider._createAndCacheUntypedSerializer(SerializerProvider.java:833)
at com.fasterxml.jackson.databind.SerializerProvider.findValueSerializer(SerializerProvider.java:387)
at com.fasterxml.jackson.databind.SerializerProvider.findTypedValueSerializer(SerializerProvider.java:478)
at com.fasterxml.jackson.databind.ser.DefaultSerializerProvider.serializeValue(DefaultSerializerProvider.java:97)
at com.fasterxml.jackson.databind.ObjectMapper._convert(ObjectMapper.java:2593)
at com.fasterxml.jackson.databind.ObjectMapper.convertValue(ObjectMapper.java:2542)
at com.firebase.client.Firebase.setValueInternal(Firebase.java:346)
at com.firebase.client.Firebase.setValue(Firebase.java:248)
at com.example.lerun.crazybugs.User.onCreate(User.java:38)
at android.app.Activity.performCreate(Activity.java:6237)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1107)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2369)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)
at android.app.ActivityThread.-wrap11(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
Jede Idee, warum Dies wird sehr appreciated sein. Vielen Dank.
Machen Sie die Klasse, die Sie speichern möchten, 'Benutzer', eine eigenständige Klasse, keine Unterklasse Ihrer Aktivität. –
@qbix danke sehr geehrter Herr, das hat funktioniert. Ich bin ein Neuling. Könnten Sie näher erläutern, warum das wichtig ist? –
Ihre 'User' Klasse erbt dutzende Eigenschaften von' AppCompatActivity'. Viele dieser Eigenschaften entsprechen nicht den Anforderungen von Firebase für die Serialisierung/Deserialisierung. –