Firebase RecyclerAdapter InvocationTargetException 问题

Question

过去 4 个小时，我一直在尝试缩小视图持有者问题的范围，但似乎找不到。我一直在关注并复制此代码。 Friendly Chat - Android

但仍然没有希望。我得到了

“java.lang.RuntimeException: java.lang.reflect.InvocationTargetException”

java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
at com.firebase.ui.database.FirebaseRecyclerAdapter.onCreateViewHolder(FirebaseRecyclerAdapter.java:167)
at android.support.v7.widget.RecyclerView$Adapter.createViewHolder(RecyclerView.java:5482)
at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:4707)
at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:4617)
at android.support.v7.widget.LinearLayoutManager$LayoutState.next(LinearLayoutManager.java:1994)
at android.support.v7.widget.LinearLayoutManager.layoutChunk(LinearLayoutManager.java:1390)
at android.support.v7.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1353)
at android.support.v7.widget.LinearLayoutManager.onLayoutChildren(LinearLayoutManager.java:549)
at android.support.v7.widget.RecyclerView.dispatchLayoutStep2(RecyclerView.java:3028)
at android.support.v7.widget.RecyclerView.dispatchLayout(RecyclerView.java:2906)
at android.support.v7.widget.RecyclerView.onLayout(RecyclerView.java:3283)
at android.view.View.layout(View.java:15686)
at android.view.ViewGroup.layout(ViewGroup.java:5039)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:579)
at android.widget.FrameLayout.onLayout(FrameLayout.java:514)
at android.view.View.layout(View.java:15686)
at android.view.ViewGroup.layout(ViewGroup.java:5039)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:579)
at android.widget.FrameLayout.onLayout(FrameLayout.java:514)
at android.view.View.layout(View.java:15686)
at android.view.ViewGroup.layout(ViewGroup.java:5039)
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:15686)
at android.view.ViewGroup.layout(ViewGroup.java:5039)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:579)
at android.widget.FrameLayout.onLayout(FrameLayout.java:514)
at android.view.View.layout(View.java:15686)
at android.view.ViewGroup.layout(ViewGroup.java:5039)
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:15686)
at android.view.ViewGroup.layout(ViewGroup.java:5039)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:579)
at android.widget.FrameLayout.onLayout(FrameLayout.java:514)
at android.view.View.layout(View.java:15686)
at android.view.ViewGroup.layout(ViewGroup.java:5039)
at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:2086)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1843)
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1061)
at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5891)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:767)
at android.view.Choreographer.doCallbacks(Choreographer.java:580)
at android.view.Choreographer.doFrame(Choreographer.java:550)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:753)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5292)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:904)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:699)
Caused by: java.lang.reflect.InvocationTargetException
at java.lang.reflect.Constructor.newInstance(Native Method)
at java.lang.reflect.Constructor.newInstance(Constructor.java:288)
at com.firebase.ui.database.FirebaseRecyclerAdapter.onCrea

查看持有人

public class MessageActivity extends AppCompatActivity {

public static class MessageViewHolder extends RecyclerView.ViewHolder {
    public TextView messageTextView;
    public TextView messengerTextView;
    public CircleImageView messengerImageView;

    public MessageViewHolder(View itemView) {
        super(itemView);
        messageTextView = (TextView) itemView.findViewById(R.id.messageTextView);
        messengerTextView = (TextView) itemView.findViewById(R.id.messengerTextView);
        messengerImageView = (CircleImageView) itemView.findViewById(R.id.messengerImageView);
    }
   .....
}

创建适配器

mFirebaseAdapter = new FirebaseRecyclerAdapter<Message, MessageViewHolder>(
            Message.class,
            R.layout.item_message,
            MessageViewHolder.class,
            mFirebaseDatabaseReference.child(MESSAGES_CHILD)) {

        @Override
        protected void populateViewHolder(MessageViewHolder viewHolder, Message friendlyMessage, int position) {
            viewHolder.messageTextView.setText(friendlyMessage.getText());
            viewHolder.messengerTextView.setText(friendlyMessage.getName());
            if (friendlyMessage.getPhotoUrl() == null) {
                viewHolder.messengerImageView.setImageDrawable(ContextCompat.getDrawable(MessageActivity.this,
                        R.drawable.profilepic_placeholder));
            } else {
                Glide.with(MessageActivity.this)
                        .load(friendlyMessage.getPhotoUrl())
                        .into(viewHolder.messengerImageView);
            }
        }
    };

设置适配器

 mMessageRecyclerView.setLayoutManager(mLinearLayoutManager);
 mMessageRecyclerView.setAdapter(mFirebaseAdapter);

一旦我开始活动，应用程序会在几秒钟内崩溃:(并抛出 InvocationTargetException

编辑
我正在使用的库

compile 'com.google.firebase:firebase-database:9.4.0'
compile 'com.google.firebase:firebase-messaging:9.4.0'
compile 'com.firebaseui:firebase-ui-database:0.5.3'

Answer 1

可能你弄错了 private FirebaseRecyclerAdapter mFirebaseAdapter;仔细检查您的 Values 或 RecyclerView，因为参数无效。 https://stackoverflow.com/a/6020758/6821007

编辑：编译 'com.github.bumptech.glide:glide:3.5.2' 并支持 RecyclerView 等小部件

Answer 2

经过这么多的尝试，它只是一个词解决了它。这是我的 populateViewholder 上的“最终”关键字。即使你我的观点持有者不是最终的，但最终的关键字仍然使它起作用。不知道为什么以及如何。不知道 firebase recyclerviewadapter 会这么严格

适配器

mFirebaseAdapter = new FirebaseRecyclerAdapter<Message, MessageViewHolder>(
            Message.class,
            R.layout.item_message,
            MessageViewHolder.class,
            mFirebaseDatabaseReference.child(MESSAGES_CHILD)) {

        @Override
        protected void populateViewHolder(final MessageViewHolder viewHolder, Message friendlyMessage, int position) {
            viewHolder.messageTextView.setText(friendlyMessage.getText());
            viewHolder.messengerTextView.setText(friendlyMessage.getName());
            if (friendlyMessage.getPhotoUrl() == null) {
                viewHolder.messengerImageView.setImageDrawable(ContextCompat.getDrawable(MessageActivity.this,
                        R.drawable.profilepic_placeholder));
            } else {
                Glide.with(MessageActivity.this)
                        .load(friendlyMessage.getPhotoUrl())
                        .into(viewHolder.messengerImageView);
            }
        }
    };