Codi JC32 - Transmetre paràmetres en la navegació en Jetpack Compose

Author: Section One

app/src/main/java/es/cibernarium/jetpackcomposeapp/navegacio/NavegacioApp.kt

@@ -1,9 +1,11 @@
 package es.cibernarium.jetpackcomposeapp.navegacio
 
 import androidx.compose.runtime.Composable
+import androidx.navigation.NavType
 import androidx.navigation.compose.NavHost
 import androidx.navigation.compose.composable
 import androidx.navigation.compose.rememberNavController
+import androidx.navigation.navArgument
 import es.cibernarium.jetpackcomposeapp.pantalles.PrimeraPantalla
 import es.cibernarium.jetpackcomposeapp.pantalles.SegonaPantalla
 
@@ -14,8 +16,12 @@ fun NavegacioApp(){
         composable(route = PantallesApp.PrimeraPantalla.route) {
             PrimeraPantalla(navController)
         }
-        composable(route = PantallesApp.SegonaPantalla.route) {
-            SegonaPantalla(navController)
+        composable(route = PantallesApp.SegonaPantalla.route + "/{text}",
+            arguments = listOf(navArgument(name = "text"){
+                type = NavType.StringType
+            })
+        ) {
+            SegonaPantalla(navController,it.arguments?.getString("text"))
         }
     }
 }

app/src/main/java/es/cibernarium/jetpackcomposeapp/pantalles/PrimeraPantalla.kt

@@ -30,7 +30,7 @@ fun ContingutCos(navController: NavController){
     ) {
         Text("Intranet")
         Button(onClick = {
-            navController.navigate(route = PantallesApp.SegonaPantalla.route)
+            navController.navigate(route = PantallesApp.SegonaPantalla.route + "/Text enviat")
         }) {
             Text("Navega")
         }

app/src/main/java/es/cibernarium/jetpackcomposeapp/pantalles/SegonaPantalla.kt

@@ -14,24 +14,25 @@ import androidx.navigation.NavController
 
 @SuppressLint("UnusedMaterial3ScaffoldPaddingParameter")
 @Composable
-fun SegonaPantalla(navController: NavController){
+fun SegonaPantalla(navController: NavController, text:String?){
     //Scaffold (
-        ContingutCos1(navController)
+        ContingutCos1(navController,text)
     //}
 }
 
 @Composable
-fun ContingutCos1(navController: NavController){
+fun ContingutCos1(navController: NavController, text: String?){
     Column(
         modifier = Modifier.fillMaxSize(),
         verticalArrangement = Arrangement.Center,
         horizontalAlignment = Alignment.CenterHorizontally
     ) {
         Text("Segona Pantalla")
+        text?.let {Text(it)}
         Button(onClick = {
             navController.popBackStack()
         }) {
-            Text("Navega")
+            Text("Tornar Enrere")
         }
     }
 }