[Android] Fragmentに値を渡す

companion object {
    private const val ARG_TEXT = "arg_text"

    fun newInstance(text: String) = MainFragment()
        .apply {
            arguments = Bundle().apply {
                putString(ARG_TEXT, text)
            }
        }
}

private val text: String by lazy {
    arguments?.getString(ARG_TEXT) ?: ""
}

apply plugin: 'androidx.navigation.safeargs.kotlin'

buildscript {
        // Navigation Safe Args
        def nav_version = "2.1.0"
        classpath "androidx.navigation:navigation-safe-args-gradle-plugin:$nav_version"
    }
}

android {
    compileOptions {
        sourceCompatibility = 1.8
        targetCompatibility = 1.8
    }
    kotlinOptions {
        jvmTarget = "1.8"
    }
}

<fragment
        android:id="@+id/output_fragment"
        android:name="com.okuzawats.helloworld.fragment.OutputFragment"
        android:label="fragment_output"
        tools:layout="@layout/fragment_output">

    <argument
        android:name="name"
        app:argType="string"/>

</fragment>

val inputText = input_edit_text.text.toString()
val action = InputFragmentDirections.actionInputToOutput(inputText)
findNavController().navigate(action)

private val args: OutputFragmentArgs by navArgs()

private val name: String by lazy {
    args.name
}