【发布时间】：2016-07-10 16:26:40
【问题描述】：
我有这样的用户类
public class User{
int id;
String description;
String shortDescription;
String photo;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
public String getShortDescription() {
return shortDescription;
}
public void setShortDescription(String shortDescription) {
this.shortDescription = shortDescription;
}
public String getPhoto() {
return photo;
}
public void setPhoto(String photo) {
this.photo = photo;
}
}
我正在使用 FirebaseRecyclerAdapter 获取存储在我的 firebase 上的用户，如下所示
FirebaseRecyclerAdapter<User, UserHolder> adapter =
new FirebaseRecyclerAdapter<User, UserHolder>(
User.class,
android.R.layout.two_line_list_item,
UserHolder.class,
mRef) {
@Override
protected void populateViewHolder(UserHolder userHolder, User u, int i) {
userHolder.mText.setText(u.getDescription());
}
};
但问题是当用户对象的 firebase 键是这样的时
> -KDY9Pna7XqgFkyCHKFJ
那么它工作正常但是如果firebase key就像
> c5755a68-69a7-4464-956e-c2f94d9b387d
这个 unique id 那么它给出了一个 error
> com.firebase.client.FirebaseException: Failed to bounce to type
FATAL EXCEPTION: main Process: in.rofr, PID: 12399 com.firebase.client.FirebaseException: Failed to bounce to type at com.firebase.client.DataSnapshot.getValue(DataSnapshot.java:183) at com.firebase.ui.FirebaseRecyclerAdapter.parseSnapshot(FirebaseRecyclerAdapter.java:161) at com.firebase.ui.FirebaseRecyclerAdapter.getItem(FirebaseRecyclerAdapter.java:150) at com.firebase.ui.FirebaseRecyclerAdapter.onBindViewHolder(FirebaseRecyclerAdapter.java:190) at android.support.v7.widget.RecyclerView$Adapter.onBindViewHolder(RecyclerView.java:5465) at android.support.v7.widget.RecyclerView$Adapter.bindViewHolder(RecyclerView.java:5498) at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:4735) at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:4611) at android.support.v7.widget.LinearLayoutManager$LayoutState.next(LinearLayoutManager.java:1988) at android.support.v7.widget.LinearLayoutManager.layoutChunk(LinearLayoutManager.java:1384) at android.support.v7.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1347) at android.support.v7.widget.LinearLayoutManager.onLayoutChildren(LinearLayoutManager.java:574) at android.support.v7.widget.RecyclerView.dispatchLayoutStep2(RecyclerView.java:3026) at android.support.v7.widget.RecyclerView.dispatchLayout(RecyclerView.java:2903) at android.support.v7.widget.RecyclerView.onLayout(RecyclerView.java:3277) at android.view.View.layout(View.java:15689) at android.view.ViewGroup.layout(ViewGroup.java:5040) at android.widget.FrameLayout.layoutChildren(FrameLayout.java:579) at android.widget.FrameLayout.onLayout(FrameLayout.java:514) at android.view.View.layout(View.java:15689) at android.view.ViewGroup.layout(ViewGroup.java:5040) at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1703) at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1557) at android.widget.LinearLayout.onLayout(LinearLayout.java:1466) at android.view.View.layout(View.java:15689) at android.view.ViewGroup.layout(ViewGroup.java:5040) at android.support.v4.widget.DrawerLayout.onLayout(DrawerLayout.java:1183) at android.view.View.layout(View.java:15689) at android.view.ViewGroup.layout(ViewGroup.java:5040) at android.widget.FrameLayout.layoutChildren(FrameLayout.java:579) at android.widget.FrameLayout.onLayout(FrameLayout.java:514) at android.view.View.layout(View.java:15689) at android.view.ViewGroup.layout(ViewGroup.java:5040) at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1703) at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1557) at android.widget.LinearLayout.onLayout(LinearLayout.java:1466) at android.view.View.layout(View.java:15689) at android.view.ViewGroup.layout(ViewGroup.java:5040) at android.widget.FrameLayout.layoutChildren(FrameLayout.java:579) at android.widget.FrameLayout.onLayout(FrameLayout.java:514) at android.view.View.layout(View.java:15689) at android.view.ViewGroup.layout(ViewGroup.java:5040) at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1703) at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1557) at android.widget.LinearLayout.onLayout(LinearLayout.java:1466) at android.view.View.layout(View.java:15689) at android.view.ViewGroup.layout(ViewGroup.java:5040) at android.widget.FrameLayout.layoutChildren(FrameLayout.java:579) at android.widget.FrameLayout.onLayout(FrameLayout.java:514) at android.view.View.layout(View.java:15689) at android.view.ViewGroup.layout(ViewGroup.java:5040) at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:2116) at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1873) at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1084) at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5990) at android.view.Choreographer$CallbackRecord.run(Choreographer.java:767) at android.view.Choreographer.doCallbacks(Choreographer.java:580) at android.view.Choreographer.doFrame(Choreographer.java:550)
确切的问题是什么，我没有得到任何人可以帮助我吗？
提前致谢！！！
【问题讨论】：
-
我能知道这一行中的 s 是什么吗userHolder.mText.setText(s.getDescription()); 我找不到你在哪里声明那个。
-
对不起它的 u.getDescription()
-
还是有点困惑，你能说说key。调试时是firebase中的那个键还是Object的键？
-
那么问题是 JSON 属性没有正确映射请看这个Answer
-
如果没有在 JSON 中看到用户（作为文本，请不要截图）和 完整 堆栈跟踪（嵌套了更有趣的错误消息），将无法提供帮助。但是@Kathi 链接的答案确实是一个好的开始。 :-)
标签： android firebase firebase-realtime-database