1.引入依赖

//jetpack compose导航

implementation("androidx.navigation:navigation-compose:2.5.3")

2.代码

import android.os.Bundle
import androidx.activity.ComponentActivity
import androidx.activity.compose.setContent
import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.material3.Button
import androidx.compose.material3.Text
import androidx.compose.runtime.Composable
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.unit.sp
import androidx.navigation.NavController
import androidx.navigation.NavHostController
import androidx.navigation.compose.NavHost
import androidx.navigation.compose.composable
import androidx.navigation.compose.rememberNavControllerclass MainActivity : ComponentActivity() {private lateinit var mNavController: NavControlleroverride fun onCreate(savedInstanceState: Bundle?) {super.onCreate(savedInstanceState)setContent {//创建导航控制器mNavController = rememberNavController()//创建NavHost导航组建者，传入了mNavController 导航控制器 与 首个显示的页面 startDestination = APageNavHost(navController = mNavController as NavHostController, startDestination = "APage") {//这里添加了页面A，APage为路由地址composable(route = "APage") { APage() }composable(route = "BPage") { BPage() }}}}/*** 页面A*/@Composablefun APage() {Column(Modifier.fillMaxSize(),horizontalAlignment = Alignment.CenterHorizontally,verticalArrangement = Arrangement.Center) {Button(onClick = { mNavController.navigate("BPage") }) {Text(text = "页面A: 点击跳转页面B", fontSize = 30.sp)}}}/*** 页面B*/@Composablefun BPage() {Column(Modifier.fillMaxSize(),horizontalAlignment = Alignment.CenterHorizontally,verticalArrangement = Arrangement.Center) {Button(onClick = { mNavController.navigateUp() }) {Text(text = "页面B: 点击返回页面A", fontSize = 30.sp)}}}}