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layout/design_navigation_menu_item: <merge /> 只能与有效的 ViewGroup 根和 attachToRoot=true 一起使用

• 问答

昨天我在使用android studios，它工作正常，但今天是什么时候。当我在手机上测试我的应用程序时出现此错误：

git add .
git commit -m "initial commit"
git push origin main

我已经尝试了一段时间来找到这个问题，但是每次我看到似乎是这个问题的东西时，这个错误已经很熟悉了。

我的 Mainactivity.java：

2021-07-30 12:46:53.204 10525-10525/com.brizaloka.brizasapp E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.brizaloka.brizasapp,PID: 10525
    java.lang.RuntimeException: Unable to start activity ComponentInfo{com.brizaloka.brizasapp/com.brizaloka.brizasapp.Mainactivity}: android.view.InflateException: Binary XML file line #17 in com.brizaloka.brizasapp:layout/activity_main: Binary XML file line #17 in com.brizaloka.brizasapp:layout/activity_main: Error inflating class com.google.android.material.navigation.NavigationView
        at android.app.activityThread.performLaunchactivity(activityThread.java:3338)
        at android.app.activityThread.handleLaunchactivity(activityThread.java:3487)
        at android.app.servertransaction.LaunchactivityItem.execute(LaunchactivityItem.java:83)
        at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
        at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
        at android.app.activityThread$H.handleMessage(activityThread.java:2071)
        at android.os.Handler.dispatchMessage(Handler.java:107)
        at android.os.Looper.loop(Looper.java:224)
        at android.app.activityThread.main(activityThread.java:7561)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:539)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:995)
     Caused by: android.view.InflateException: Binary XML file line #17 in com.brizaloka.brizasapp:layout/activity_main: Binary XML file line #17 in com.brizaloka.brizasapp:layout/activity_main: Error inflating class com.google.android.material.navigation.NavigationView
     Caused by: android.view.InflateException: Binary XML file line #17 in com.brizaloka.brizasapp:layout/activity_main: Error inflating class com.google.android.material.navigation.NavigationView
     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:858)
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:1014)
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:965)
        at android.view.LayoutInflater.rInflate(LayoutInflater.java:1144)
        at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:1105)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:686)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:538)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:481)
        at androidx.appcompat.app.appcompatdelegateImpl.setContentView(appcompatdelegateImpl.java:696)
        at androidx.appcompat.app.AppCompatactivity.setContentView(AppCompatactivity.java:170)
        at com.brizaloka.brizasapp.Mainactivity.onCreate(Mainactivity.java:35)
        at android.app.activity.performCreate(activity.java:7893)
        at android.app.activity.performCreate(activity.java:7880)
        at android.app.Instrumentation.callactivityOnCreate(Instrumentation.java:1306)
        at android.app.activityThread.performLaunchactivity(activityThread.java:3313)
        at android.app.activityThread.handleLaunchactivity(activityThread.java:3487)
        at android.app.servertransaction.LaunchactivityItem.execute(LaunchactivityItem.java:83)
        at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
        at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
        at android.app.activityThread$H.handleMessage(activityThread.java:2071)
        at android.os.Handler.dispatchMessage(Handler.java:107)
        at android.os.Looper.loop(Looper.java:224)
        at android.app.activityThread.main(activityThread.java:7561)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:539)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:995)
2021-07-30 12:46:53.205 10525-10525/com.brizaloka.brizasapp E/AndroidRuntime: Caused by: android.view.InflateException: Binary XML file line #17 in com.brizaloka.brizasapp:layout/design_navigation_menu_item: <merge /> can be used only with a valid ViewGroup root and attachToRoot=true
    Caused by: android.view.InflateException: <merge /> can be used only with a valid ViewGroup root and attachToRoot=true
        at android.view.LayoutInflater.inflate(LayoutInflater.java:656)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:538)
        at com.google.android.material.internal.NavigationmenuPresenter.getMenuView(NavigationmenuPresenter.java:108)
        at com.google.android.material.navigation.NavigationView.<init>(NavigationView.java:234)
        at com.google.android.material.navigation.NavigationView.<init>(NavigationView.java:122)
        at java.lang.reflect.Constructor.newInstance0(Native Method)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:343)
        at android.view.LayoutInflater.createView(LayoutInflater.java:858)
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:1014)
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:965)
        at android.view.LayoutInflater.rInflate(LayoutInflater.java:1144)
        at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:1105)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:686)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:538)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:481)
        at androidx.appcompat.app.appcompatdelegateImpl.setContentView(appcompatdelegateImpl.java:696)
        at androidx.appcompat.app.AppCompatactivity.setContentView(AppCompatactivity.java:170)
        at com.brizaloka.brizasapp.Mainactivity.onCreate(Mainactivity.java:35)
        at android.app.activity.performCreate(activity.java:7893)
        at android.app.activity.performCreate(activity.java:7880)
        at android.app.Instrumentation.callactivityOnCreate(Instrumentation.java:1306)
        at android.app.activityThread.performLaunchactivity(activityThread.java:3313)
        at android.app.activityThread.handleLaunchactivity(activityThread.java:3487)
        at android.app.servertransaction.LaunchactivityItem.execute(LaunchactivityItem.java:83)
        at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
        at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
        at android.app.activityThread$H.handleMessage(activityThread.java:2071)
        at android.os.Handler.dispatchMessage(Handler.java:107)
        at android.os.Looper.loop(Looper.java:224)
        at android.app.activityThread.main(activityThread.java:7561)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:539)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:995)
2021-07-30 12:46:53.213 10525-10525/com.brizaloka.brizasapp D/OOMEventManagerFK: checkEventAndDumpForJE: 0
2021-07-30 12:46:53.233 10525-10525/com.brizaloka.brizasapp I/Process: Sending signal. PID: 10525 SIG: 9

activity_main.xml

package com.brizaloka.brizasapp;

import android.Manifest;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.media.MediaPlayer;
import android.net.Uri;
import android.os.Bundle;
import android.view.MenuItem;
import android.view.Menu;
import android.widget.Toast;

import com.brizaloka.brizasapp.ui.gadgets.requestPermission;
import com.google.android.material.navigation.NavigationView;

import androidx.annotation.NonNull;
import androidx.core.content.ContextCompat;
import androidx.navigation.NavController;
import androidx.navigation.Navigation;
import androidx.navigation.ui.AppBarConfiguration;
import androidx.navigation.ui.NavigationUI;
import androidx.drawerlayout.widget.DrawerLayout;
import androidx.appcompat.app.AppCompatactivity;
import androidx.appcompat.widget.Toolbar;

import java.io.IOException;

public class Mainactivity extends AppCompatactivity{
    private AppBarConfiguration mAppBarConfiguration;
    private MediaPlayer mediaPlayer;
    private boolean playing = false;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Toolbar toolbar = findViewById(R.id.toolbar);
        setSupportactionBar(toolbar);
        DrawerLayout drawer = findViewById(R.id.drawer_layout);
        NavigationView navigationView = findViewById(R.id.nav_view);
        // Passing each menu ID as a set of Ids because each
        // menu should be considered as top level destinations.
        mAppBarConfiguration = new AppBarConfiguration.Builder(
                R.id.nav_home,R.id.nav_gallery,R.id.nav_slideshow,R.id.nav_insert_api,R.id.nav_pesquisas,R.id.nav_ttp,R.id.nav_random_image,R.id.nav_gerador)
                .setDrawerLayout(drawer)
                .build();
        NavController navController = Navigation.findNavController(this,R.id.nav_host_fragment);
        NavigationUI.setupactionBarWithNavController(this,navController,mAppBarConfiguration);
        NavigationUI.setupWithNavController(navigationView,navController);

    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main,menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(@NonNull MenuItem item) {
        switch (item.getItemId()) {
            case R.id.item_1:
                if(!playing) {
                    Toast.makeText(this,"Iniciando música...",Toast.LENGTH_SHORT).show();
                    try {
                        mediaPlayer = new MediaPlayer();
                        mediaPlayer.setDataSource("http://hyades.shoutca.st:8043/stream?partnertok=eyJhbGciOiJIUzI1NiIsImtpZCI6InR1bmVpbiIsInR5cCI6IkpXVCJ9.eyJ0cnVzdGVkX3BhcnRuZXIiOnRydWUsImlhdCI6MTYyNjg4MDY3OCwiaXNzIjoidGlzcnYifQ.bLs22riwR5NrHEWAmSm2xRaX540yZDmRUzuXNyHjn4g");
                        mediaPlayer.prepareAsync();
                        mediaPlayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
                            @Override
                            public void onPrepared(MediaPlayer mp) {
                                mp.start();
                                Toast.makeText(getapplicationContext(),"Música inicada com sucesso!",Toast.LENGTH_SHORT).show();
                                playing = true;
                            }
                        });
                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                } else {
                    Toast.makeText(this,"Música já iniciada",Toast.LENGTH_SHORT).show();
                }
                break;
            case R.id.item_2:
                if(playing) {
                    mediaPlayer.stop();
                    Toast.makeText(this,"Música pausada",Toast.LENGTH_SHORT).show();
                    playing = false;
                }
                else {
                    Toast.makeText(this,"Música já está pausada",Toast.LENGTH_SHORT).show();
                }
                break;
            case R.id.item_3:
                startactivity(new Intent(Intent.actION_VIEW,Uri.parse("https://tunein.com/radio/Chillhop-Radio---Lofi-Hiphop-Beats---Chillsky-s288329/")));

        }
        return super.onOptionsItemSelected(item);
    }
    @Override
    public boolean onSupportNavigateUp() {
        NavController navController = Navigation.findNavController(this,R.id.nav_host_fragment);
        return NavigationUI.navigateUp(navController,mAppBarConfiguration)
                || super.onSupportNavigateUp();
    }
}

AndroidManifest.xml：

<?xml version="1.0" encoding="utf-8"?>
<androidx.drawerlayout.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/drawer_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#212121"
    android:fitsSystemWindows="true"
    tools:openDrawer="start">

    <include
        layout="@layout/app_bar_main"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

    <com.google.android.material.navigation.NavigationView
        android:id="@+id/nav_view"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:layout_gravity="start"
        android:background="#212121"
        android:fitsSystemWindows="true"
        app:headerLayout="@layout/nav_header_main"
        app:itemIconTint="#C3C3C3"
        app:itemTextColor="#C3C3C3"
        app:menu="@menu/activity_main_drawer"
        android:theme="@style/darkTheme"/>
</androidx.drawerlayout.widget.DrawerLayout>

build.gradle(module):

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.brizaloka.brizasapp">

    <uses-permission android:name="android.permission.WAKE_LOCK" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.accESS_NETWORK_STATE" />

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:requestLegacyExternalStorage="true"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsrtl="true"
        android:theme="@style/darkTheme"
        android:usesCleartextTraffic="true">

        <meta-data
            android:name="com.google.android.gms.ads.APPLICATION_ID"
            android:value="@string/ads_applicationid" />

        <activity
            android:name=".Mainactivity"
            android:label="Brizas App"
            android:screenOrientation="portrait"
            android:theme="@style/darkTheme">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

        <service
            android:name=".ui.gadgets.PushNotificationService"
            android:exported="false">
            <intent-filter>
                <action android:name="com.google.firebase.MESSAGING_EVENT" />
            </intent-filter>
        </service>
    </application>

</manifest>

build.gradle（应用）

// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
    repositories {
        google()
        jcenter()
        mavenCentral()
    }
    dependencies {
        classpath "com.android.tools.build:gradle:4.0.0"
        classpath 'com.google.gms:google-services:4.3.8'
        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        google()
        jcenter()
    }
}

task clean(type: Delete) {
    delete rootProject.buildDir
}
zzbb1213 回答：layout/design_navigation_menu_item: <merge /> 只能与有效的 ViewGroup 根和 attachToRoot=true 一起使用

清理并重建您的项目。

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