互通性方案
本食譜示範如何在 Navigation3 應用程式中使用 AndroidFragment 和 AndroidView。
功能
- AndroidFragment:說明如何在可組合項目的地內嵌入 Fragment。
- AndroidView:說明如何在可組合項目的地中嵌入傳統 Android View。
重要元件
InteropActivity:主活動,用於代管導覽功能。MyCustomFragment:範例中使用的簡單 Fragment。AndroidFragment<T>:可代管片段的可組合函式。AndroidView:可代管 Android View 的可組合函式。
用量
- 執行
InteropActivity。 - 初始畫面會顯示片段。
- 按一下「前往檢視畫面」,即可前往顯示
TextView的畫面。
package com.example.nav3recipes.interop import android.annotation.SuppressLint import android.os.Bundle import android.view.LayoutInflater import android.view.View import android.view.ViewGroup import android.widget.TextView import androidx.fragment.app.Fragment class MyCustomFragment : Fragment() { @SuppressLint("SetTextI18n") override fun onCreateView( inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle? ): View { return TextView(requireContext()).apply { text = "My Fragment" } } }
package com.example.nav3recipes.interop import android.annotation.SuppressLint import android.os.Bundle import android.widget.TextView import androidx.activity.compose.setContent import androidx.compose.foundation.layout.Column import androidx.compose.foundation.layout.fillMaxSize import androidx.compose.foundation.layout.wrapContentSize import androidx.compose.material3.Button import androidx.compose.material3.Text import androidx.compose.ui.Modifier import androidx.compose.ui.viewinterop.AndroidView import androidx.fragment.app.FragmentActivity import androidx.fragment.compose.AndroidFragment import androidx.lifecycle.compose.dropUnlessResumed import androidx.navigation3.runtime.NavKey import androidx.navigation3.runtime.entryProvider import androidx.navigation3.runtime.rememberNavBackStack import androidx.navigation3.ui.NavDisplay import com.example.nav3recipes.ui.setEdgeToEdgeConfig import kotlinx.serialization.Serializable @Serializable private data object FragmentRoute : NavKey @Serializable private data class ViewRoute(val id: String) : NavKey class InteropActivity : FragmentActivity() { @SuppressLint("SetTextI18n") override fun onCreate(savedInstanceState: Bundle?) { setEdgeToEdgeConfig() super.onCreate(savedInstanceState) setContent { val backStack = rememberNavBackStack(FragmentRoute) NavDisplay( backStack = backStack, onBack = { backStack.removeLastOrNull() }, entryProvider = entryProvider { entry<FragmentRoute> { Column(Modifier.fillMaxSize().wrapContentSize()) { AndroidFragment<MyCustomFragment>() Button(onClick = dropUnlessResumed { backStack.add(ViewRoute("123")) }) { Text("Go to View") } } } entry<ViewRoute> { key -> AndroidView( modifier = Modifier.fillMaxSize().wrapContentSize(), factory = { context -> TextView(context).apply { text = "My View with key: ${key.id}" } } ) } } ) } } }