可以使用提供的参数调用以下函数。向上导航

Question

我正在使用 android 导航组件开发 android，但我收到以下警告以下任何函数都不能使用提供的参数调用。androidx.navigation.ui.NavigationUI 中定义的 navigateUp(NavController, DrawerLayout?) androidx.navigation.ui.Navigation 中定义的 navigateUp(NavController, AppBarConfiguration)

在我的 MainActivity.kt 下面

import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import androidx.navigation.NavController
import androidx.navigation.Navigation
import androidx.navigation.ui.NavigationUI


import androidx.navigation.ui.setupWithNavController
import com.example.forecastmvvm.R
import kotlinx.android.synthetic.main.activity_main.*



class MainActivity : AppCompatActivity() {
    private lateinit var navController: NavController
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        setSupportActionBar(toolbar)
        navController = Navigation.findNavController(this,R.id.nav_host_fragment)
        bottom_nav.setupWithNavController(navController)
        NavigationUI.setupActionBarWithNavController(this, navController)
    }

    override fun onSupportNavigateUp(): Boolean {
         return NavigationUI.navigateUp( null, navController)
    }


}

在 app.gradle 下面

apply plugin: 'com.android.application'

apply plugin: 'kotlin-android'
apply plugin: "kotlin-kapt"

apply plugin: 'androidx.navigation.safeargs'
apply plugin: 'kotlin-android-extensions'

android {
    compileSdkVersion 28
    defaultConfig {
        applicationId "com.example.forecastmvvm"
        minSdkVersion 15
        targetSdkVersion 28
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:1.0.0"
    implementation 'androidx.appcompat:appcompat:1.0.0'
    implementation "android.arch.navigation:navigation-fragment:1.0.0"
    implementation "android.arch.navigation:navigation-ui:1.0.0"
    implementation "android.arch.navigation:navigation-fragment-ktx:1.0.0"
    implementation "android.arch.navigation:navigation-ui-ktx:1.0.0"

    implementation "androidx.core:core-ktx:1.0.0"
    implementation "androidx.constraintlayout:constraintlayout:1.1.3"

    // Room
    implementation "androidx.room:room-runtime:2.1.0"
    implementation "androidx.legacy:legacy-support-v4:1.0.0"
    implementation 'androidx.lifecycle:lifecycle-extensions:2.0.0'
    implementation 'androidx.lifecycle:lifecycle-viewmodel-ktx:2.0.0'
    kapt "androidx.room:room-compiler:2.1.0"

    // Gson
    implementation "com.google.code.gson:gson:2.8.5"

    // Kotlin Android Coroutines
    implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-core:1.0.0'
    implementation "org.jetbrains.kotlinx:kotlinx-coroutines-android:1.0.0"

    // Retrofit
    implementation "com.squareup.retrofit2:retrofit:2.0.0"
    implementation "com.squareup.retrofit2:converter-gson:2.0.0"
    implementation 'com.jakewharton.retrofit:retrofit2-kotlin-coroutines-adapter:0.9.2'

    // ViewModel
    implementation "androidx.lifecycle:lifecycle-extensions:2.0.0"
    implementation "androidx.lifecycle:lifecycle-viewmodel-ktx:2.0.0"
    kapt "androidx.lifecycle:lifecycle-compiler:2.0.0"

    // Kodein
    implementation "org.kodein.di:kodein-di-generic-jvm:6.3.3"
    implementation "org.kodein.di:kodein-di-framework-android-x:6.3.3"

    // Better dateTime-time support even on older Android versions
    implementation "com.jakewharton.threetenabp:threetenabp:1.1.0"

    // Glide
    implementation 'com.github.bumptech.glide:glide:4.8.0'
    kapt 'com.github.bumptech.glide:compiler:4.8.0'

    // Groupie RecyclerView
    implementation 'com.xwray:groupie:2.1.0'
    implementation 'com.xwray:groupie-kotlin-android-extensions:2.1.0'

    // Preference
    implementation "androidx.preference:preference:1.0.0"

    // WeatherLocation
    implementation "com.google.android.gms:play-services-location:16.0.0"

    // New Material Design
    implementation "com.google.android.material:material:1.0.0"

    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'androidx.test:runner:1.1.0-alpha4'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.0-alpha4'
}

低于gradle

buildscript {
    ext.kotlin_version = '1.3.41'
    ext.room_version = '2.1.0'
    ext.navigation_version = '1.0.0'
    ext.kodein_version = '6.3.3'
    ext.lifecycle_version = '2.0.0'
    ext.retrofit_version = '2.0.0'
    repositories {
        google()
        jcenter()

    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.4.2'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
        classpath "android.arch.navigation:navigation-safe-args-gradle-plugin:1.0.0"
        // 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
}

Answer 1

据我所知，第一个参数应该是你的 NavigationController（不可为空），你的第二个参数是 DrawerLayout（可以为空）

你应该翻转你的参数

override fun onSupportNavigateUp(): Boolean {
     return NavigationUI.navigateUp( navController, null )
}

参数参数截图