相关疑难解决方法(0)

我有一个活动A,它启动活动B传递一些意图数据.活动B托管来自新导航架构组件的导航图.我想将该意图数据作为参数传递给startDestination片段如何做到这一点？

您好，我正在研究导航架构组件，并以编程方式为我的活动设置 NavHostFragment。

主活动.xml :

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout 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:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <fragment
        android:id="@+id/nav_host"
        android:name="androidx.navigation.fragment.NavHostFragment"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:defaultNavHost="true"
     />
</android.support.constraint.ConstraintLayout>

MainActivity.kt :

package com.andor.navigate.demonavigation

import android.os.Bundle
import android.support.v7.app.AppCompatActivity
import androidx.navigation.Navigation
import androidx.navigation.fragment.NavHostFragment
import androidx.navigation.ui.NavigationUI
import kotlinx.android.synthetic.main.activity_main.*

class MainActivity : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        setupNavigation()
        NavigationUI.setupActionBarWithNavController(this, NavHostFragment.findNavController(nav_host))

    }

    override fun onSupportNavigateUp(): Boolean = Navigation.findNavController(
        this,
        R.id.nav_host
    ).navigateUp()

    private fun setupNavigation() {
        val navHostFragment = nav_host as NavHostFragment
        val navController = navHostFragment.navController
        val navInflater = …