code

rroute.iml

@@ -12,7 +12,7 @@
     <orderEntry type="module-library">
       <library>
         <CLASSES>
-          <root url="jar://C:/home/iw/Android/Sdk/platforms/android-34/android.jar!/" />
+          <root url="jar://$MODULE_DIR$/libs/classes.jar!/" />
         </CLASSES>
         <JAVADOC />
         <SOURCES />

src/main/java/com/iw/rroute/Facet.java

@@ -0,0 +1,8 @@
+package com.iw.rroute;
+
+import androidx.fragment.app.Fragment;
+
+public interface Facet {
+    Fragment fragment();
+    String tag();
+}

src/main/java/com/iw/rroute/Route.java

@@ -0,0 +1,7 @@
+package com.iw.rroute;
+
+public interface Route {
+    void forward(final Facet facet);
+    void back();
+    void replace(final Facet facet);
+}

src/main/java/com/iw/rroute/route/BaseRoute.java

@@ -0,0 +1,38 @@
+package com.iw.rroute.route;
+
+import androidx.fragment.app.FragmentManager;
+import com.iw.rroute.Facet;
+import com.iw.rroute.Route;
+
+public final class BaseRoute implements Route {
+    private final FragmentManager manager;
+    private final int container;
+
+    public BaseRoute(FragmentManager manager, int container) {
+        this.manager = manager;
+        this.container = container;
+    }
+
+    @Override
+    public void forward(Facet facet) {
+        manager.beginTransaction()
+                .setReorderingAllowed(true)
+                .addToBackStack(facet.tag())
+                .add(container, facet.fragment(), facet.tag())
+                .commit();
+    }
+
+    @Override
+    public void back() {
+        manager.popBackStack();
+    }
+
+    @Override
+    public void replace(Facet facet) {
+        manager.popBackStack();
+        manager.beginTransaction()
+                .setReorderingAllowed(false)
+                .replace(container, facet.fragment(), facet.tag())
+                .commit();
+    }
+}