没有错误显示编码,但它会崩溃后登录到我的主页.日志显示误差在膨胀线上

Question

没有错误显示在编码，但它会崩溃后，我登录到我的主页。日志显示错误在膨胀行。

下面是我的代码:

package com.example.jj.fragment;
import android.os.Bundle;
import androidx.annotation.NonNull;
import androidx.fragment.app.Fragment;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.LinearLayout;
import com.example.jj.R;
import com.example.jj.adapter.PostAdapter;
import com.example.jj.model.Post;
import com.google.firebase.database.DataSnapshot;
import com.google.firebase.database.DatabaseError;
import com.google.firebase.database.FirebaseDatabase;
import com.google.firebase.database.ValueEventListener;
import java.util.ArrayList;
import java.util.List;

public class HomeFragment extends Fragment {
private RecyclerView recyclerViewPosts;
private PostAdapter postAdapter;
private List<Post> postList;

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_home, container, false);

recyclerViewPosts = view.findViewById(R.id.recycle_view_post);
recyclerViewPosts.setHasFixedSize(true);
LinearLayoutManager linearLayoutManager = new LinearLayoutManager(getContext());
linearLayoutManager.setStackFromEnd(true);
linearLayoutManager.setReverseLayout(true);
recyclerViewPosts.setLayoutManager(linearLayoutManager);
postList = new ArrayList<>();
postAdapter = new PostAdapter(getContext(), postList);
recyclerViewPosts.setAdapter(postAdapter);
readPosts();
return view;
}
private void readPosts() {
FirebaseDatabase.getInstance().getReference().child("Posts").addValueEventListener(new ValueEventListener() {
@Override
public void onDataChange(@NonNull DataSnapshot dataSnapshot) {
postList.clear();
for (DataSnapshot snapshot : dataSnapshot.getChildren()){
Post post = snapshot.getValue(Post.class);
postList.add(post);
}
postAdapter.notifyDataSetChanged();
}
@Override
public void onCancelled(@NonNull DatabaseError error) {
}
});
}
}

和我的XML文件

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:android="http://schemas.android.com/apk/res/android">
<com.google.android.material.appbar.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/bar"
android:background="?android:attr/windowBackground"
tools:ignore="DuplicateIds">
<androidx.appcompat.widget.Toolbar
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/toolbar"
android:background="?android:attr/background">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<ImageView
android:layout_width="180dp"
android:layout_height="30dp"
android:layout_centerHorizontal="true"
android:layout_marginStart="-20dp"
android:src="@drawable/logo"/>
</RelativeLayout>
</androidx.appcompat.widget.Toolbar>
</com.google.android.material.appbar.AppBarLayout>
<androidx.core.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/bar"
tools:ignore="DuplicateIds">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="5dp"
android:id="@+id/recycle_view_post"/>

</LinearLayout>
</androidx.core.widget.NestedScrollView>
</RelativeLayout>

错误代码的样子:

Process: com.example.jj, PID: 8988
android.view.InflateException: Binary XML file line #18 in com.example.jj:layout/fragment_home: Binary XML file line #18 in com.example.jj:layout/fragment_home: Error inflating class <unknown>
Caused by: android.view.InflateException: Binary XML file line #18 in com.example.jj:layout/fragment_home: Error inflating class <unknown>
Caused by: java.lang.reflect.InvocationTargetException
at java.lang.reflect.Constructor.newInstance0(Native Method)
at java.lang.reflect.Constructor.newInstance(Constructor.java:343)
at android.view.LayoutInflater.createView(LayoutInflater.java:852)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:1004)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:959)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:1121)
at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:1082)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:1124)
at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:1082)
at android.view.LayoutInflater.inflate(LayoutInflater.java:680)
at android.view.LayoutInflater.inflate(LayoutInflater.java:532)
at com.example.jj.fragment.HomeFragment.onCreateView(HomeFragment.java:38)
at androidx.fragment.app.Fragment.performCreateView(Fragment.java:2963)
at androidx.fragment.app.FragmentStateManager.createView(FragmentStateManager.java:518)
at androidx.fragment.app.FragmentStateManager.moveToExpectedState(FragmentStateManager.java:282)
at androidx.fragment.app.FragmentManager.executeOpsTogether(FragmentManager.java:2189)
at androidx.fragment.app.FragmentManager.removeRedundantOperationsAndExecute(FragmentManager.java:2100)
at androidx.fragment.app.FragmentManager.execPendingActions(FragmentManager.java:2002)
at androidx.fragment.app.FragmentManager.dispatchStateChange(FragmentManager.java:3138)
at androidx.fragment.app.FragmentManager.dispatchActivityCreated(FragmentManager.java:3072)
at androidx.fragment.app.FragmentController.dispatchActivityCreated(FragmentController.java:251)
at androidx.fragment.app.FragmentActivity.onStart(FragmentActivity.java:502)
at androidx.appcompat.app.AppCompatActivity.onStart(AppCompatActivity.java:246)
at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1435)
at android.app.Activity.performStart(Activity.java:8018)
at android.app.ActivityThread.handleStartActivity(ActivityThread.java:3475)
at android.app.servertransaction.TransactionExecutor.performLifecycleSequence(TransactionExecutor.java:221)
at android.app.servertransaction.TransactionExecutor.cycleToPath(TransactionExecutor.java:201)
at android.app.servertransaction.TransactionExecutor.executeLifecycleState(TransactionExecutor.java:173)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:97)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2066)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:223)
at android.app.ActivityThread.main(ActivityThread.java:7656)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:592)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:947)
Caused by: java.lang.UnsupportedOperationException: Failed to resolve attribute at index 13: TypedValue{t=0x2/d=0x10100d4 a=-1}
at android.content.res.TypedArray.getDrawableForDensity(TypedArray.java:997)
at android.content.res.TypedArray.getDrawable(TypedArray.java:981)
at android.view.View.<init>(View.java:5535)
at android.view.ViewGroup.<init>(ViewGroup.java:697)
at android.view.ViewGroup.<init>(ViewGroup.java:693)
at androidx.appcompat.widget.Toolbar.<init>(Toolbar.java:237)
at androidx.appcompat.widget.Toolbar.<init>(Toolbar.java:233)

是否有任何解决方案，因为我已经检查了一些类似的问题，但看起来这些解决方案不适合我…

Answer 1

点击此链接android.view.InflateException:二进制XML文件:错误膨胀类片段

NestedScrollView和AppBarLayout id相同。

android:id="@+id/bar"

更改id可能会解决问题。

重现错误后，更改工具栏的背景颜色，如下所示:

<androidx.appcompat.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@color/white">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<ImageView
android:layout_width="180dp"
android:layout_height="30dp"
android:layout_centerHorizontal="true"
android:layout_marginStart="-20dp"
android:src="@drawable/ic_info" />
</RelativeLayout>
</androidx.appcompat.widget.Toolbar>