当我单击菜单中的项目时，导航抽屉不会在片段之间切换吗？

问题描述

我将导航抽屉活动添加到我在Android Studio中的项目中。我遇到了这个问题：

This operation requires the libraries androidx.navigation:navigation-fragment:+,androidx.navigation:navigation-ui:+.Problem: Inconsistencies in the existing project dependencies found.Version incompatibility between:- androidx.appcompat:appcompat:1.1.0@aarand:- androidx.appcompat:appcompat:1.1.0@aarWith the dependency:- androidx.annotation:*:1.1.0versus:- androidx.annotation:*:2.0.0The project may not compile after adding these libraries.Would you like to add them anyway?

我单击“确定”，然后在手机中安装该应用程序后一切正常，除了在菜单上选择另一个项目时片段不会切换。我认为这是不正常的，因为我看过教程，当您添加它时，它会自动运行而无需进行任何更改。 有人知道问题出在哪里吗？

我的gradle文件：

apply plugin: 'com.android.application'

android {
    compileSdkVersion 29

    defaultConfig {
        applicationId "com.example.opencvapplication"
        minSdkVersion 21
        targetSdkVersion 29
        versionCode 1
        versionName "1.0"

        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
    }

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'),'proguard-rules.pro'
        }
    }

    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }
}

dependencies {
    implementation fileTree(dir: "libs",include: ["*.jar"])
    implementation 'androidx.appcompat:appcompat:1.1.0'
    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
    implementation project(path: ':java')
    implementation 'com.google.android.gms:play-services-maps:17.0.0'
    implementation 'com.google.android.material:material:1.2.0'
    implementation 'androidx.legacy:legacy-support-v4:1.0.0'
    implementation 'androidx.navigation:navigation-fragment:2.3.0'
    implementation 'androidx.navigation:navigation-ui:2.3.0'
    implementation 'androidx.lifecycle:lifecycle-extensions:2.2.0'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'androidx.test.ext:junit:1.1.1'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
    implementation 'com.ankuryadav.lib:volleylib:1.0.3'
    implementation 'com.loopj.android:android-async-http:1.4.9'
    implementation 'com.google.code.gson:gson:2.8.5'
    implementation 'com.squareup.retrofit2:retrofit:2.9.0'
    implementation 'com.squareup.retrofit2:converter-gson:2.9.0'
    implementation 'de.hdodenhof:circleimageview:3.1.0'
    implementation 'com.mapbox.mapboxsdk:mapbox-android-navigation:0.42.6'
    implementation 'com.mapbox.mapboxsdk:mapbox-android-navigation-ui:0.42.6'

}

和活动

public class MainActivity2 extends AppCompatActivity {

    private AppBarConfiguration mAppBarConfiguration;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main2);
        Toolbar toolbar = findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);
        FloatingActionButton fab = findViewById(R.id.fab);
        fab.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Snackbar.make(view,"Replace with your own action",Snackbar.LENGTH_LONG)
                        .setAction("Action",null).show();
            }
        });
        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)
                .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_activity2,menu);
        return true;
    }

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

解决方法

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