i'm using firebase in java. following simple code has worked fine when users' information had updated:
final firebasebean_user userobject = new firebasebean_user(uuid, name, timestamp, points, gamesplayed, gameswon); mfirebaseuser.setvalue(userobject, system.currenttimemillis()); i used current timestamp priority value can list of users have been online recently.
however, when users go offline, mark them offline. thus, added 1 simple line again in middle:
final firebasebean_user userobject = new firebasebean_user(uuid, name, timestamp, points, gamesplayed, gameswon); mfirebaseuser.ondisconnect().setvalue(userobject, user_priority_offline); // best practice: call ondisconnect() before actual setvalue() operation prevent ghost data mfirebaseuser.setvalue(userobject, system.currenttimemillis()); and piece of code stopped working. i'm getting following exception, causing line (465) new 1 in middle:
fatal exception: main com.firebase.client.firebaseexception: failed parse node class class com.my.package.multiplayerservice$firebasebean_user @ com.firebase.client.snapshot.nodeutilities.nodefromjson(nodeutilities.java:130) @ com.firebase.client.ondisconnect.setvalue(ondisconnect.java:81) @ com.my.package.multiplayerservice.updateuserinformation(multiplayerservice.java:465) @ com.my.package.multiplayerservice.access$4(multiplayerservice.java:461) @ com.my.package.multiplayerservice$1.ondatachange(multiplayerservice.java:83) @ com.firebase.client.core.valuelistenercontainer$1.run(valuelistenercontainer.java:50) @ android.os.handler.handlecallback(handler.java:605) @ android.os.handler.dispatchmessage(handler.java:92) @ android.os.looper.loop(looper.java:137) @ android.app.activitythread.main(activitythread.java:4514) @ java.lang.reflect.method.invokenative(native method) @ java.lang.reflect.method.invoke(method.java:511) @ com.android.internal.os.zygoteinit$methodandargscaller.run(zygoteinit.java:790) @ com.android.internal.os.zygoteinit.main(zygoteinit.java:557) @ dalvik.system.nativestart.main(native method) why happen? doing wrong? mean, setvalue() worked fine before, change call on ondisconnect() , stops working.
(it not matter if there has been data @ reference point before or not.)
here class used reference:
private static class firebasebean_user { private string uuid; private string name; private int lastlogin; private double points; private int gamesplayed; private int gameswon; private firebasebean_user() { } public firebasebean_user(string uuid, string name, int lastlogin, double points, int gamesplayed, int gameswon) { this.uuid = uuid; this.name = name; this.lastlogin = lastlogin; this.points = points; this.gamesplayed = gamesplayed; this.gameswon = gameswon; } public string getuuid() { return uuid; } public string getname() { return name; } public int getlastlogin() { return lastlogin; } public double getpoints() { return points; } public int getgamesplayed() { return gamesplayed; } public int getgameswon() { return gameswon; } @override public boolean equals(object o) { return (o instanceof firebasebean_user && ((firebasebean_user) o).getuuid() == this.uuid); } }
this in fact bug in firebase sdk, sorry that! specifically, it's issue in ondisconnect handler. that's why works ref.setvalue, not ref.ondisconnect().setvalue. i'll fix asap , update answer once it's available.
edit: try grabbing latest sdk https://www.firebase.com/docs/downloads.html should version 1.0.4. let me know if continue have trouble.
