Sample with Issue

src/z2ui5_cl_demo_app_211.clas.abap

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+"!
+CLASS z2ui5_cl_demo_app_211 DEFINITION
+  PUBLIC
+  CREATE PUBLIC.
+
+  PUBLIC SECTION.
+    INTERFACES if_serializable_object.
+    INTERFACES z2ui5_if_app.
+
+    TYPES:
+      BEGIN OF ty_s_t002,
+        id    TYPE string,
+        icon  TYPE string,
+        count TYPE string,
+        table TYPE string,
+        descr TYPE string,
+        class TYPE string,
+      END OF ty_s_t002.
+    TYPES ty_t_t002 TYPE STANDARD TABLE OF ty_s_t002 WITH DEFAULT KEY.
+
+    DATA mv_selectedkey     TYPE string.
+    DATA mv_selectedkey_tmp TYPE string.
+    DATA mt_t002            TYPE ty_t_t002.
+    DATA mo_app             TYPE REF TO object.
+
+  PROTECTED SECTION.
+    DATA mo_main_page      TYPE REF TO z2ui5_cl_xml_view.
+
+    DATA client            TYPE REF TO z2ui5_if_client.
+    DATA check_initialized TYPE abap_bool.
+
+    METHODS on_init.
+    METHODS on_event.
+    METHODS render_Main.
+
+
+
+    METHODS Render_sub_app.
+
+  PRIVATE SECTION.
+
+ENDCLASS.
+
+
+CLASS z2ui5_cl_demo_app_211 IMPLEMENTATION.
+
+
+  METHOD on_event.
+    CASE client->get( )-event.
+      WHEN 'ONSELECTICONTABBAR'.
+
+        CASE mv_selectedkey.
+
+          WHEN space.
+
+          WHEN OTHERS.
+
+        ENDCASE.
+
+      WHEN 'BACK'.
+
+    ENDCASE.
+  ENDMETHOD.
+
+  METHOD on_init.
+
+    mt_t002 = VALUE #( class = 'Z2UI5_CL_DEMO_APP_212'
+                       ( id = '1' count = '5' table = 'Z2UI5_T003' descr = 'Table 01' icon = 'sap-icon://add' )
+                       ( id = '2' count = '10' table = 'Z2UI5_T003'  descr = 'Table 01' icon = 'sap-icon://add' )
+                       ( id = '3' count = '15' table = 'Z2UI5_T004'  descr = 'Table 02' icon = 'sap-icon://accept' ) ).
+
+    mv_selectedkey = '1'.
+
+  ENDMETHOD.
+
+  METHOD render_main.
+    DATA(view) = z2ui5_cl_xml_view=>factory( )->shell( ).
+
+    DATA(page) = view->page( id             = `page_main`
+                             title          = 'Customizing'
+                             navbuttonpress = client->_event( 'BACK' )
+                             shownavbutton  = abap_true
+                             class          = 'sapUiContentPadding' ).
+
+    DATA(lo_items) = page->icon_tab_bar( class       = 'sapUiResponsiveContentPadding'
+                                         selectedKey = client->_bind_edit( mv_selectedkey )
+                                         select      = client->_event( val = 'ONSELECTICONTABBAR' )
+                                                       )->items( ).
+
+    LOOP AT mt_t002 REFERENCE INTO DATA(line).
+
+      DATA(text) =  line->descr.
+      DATA(with_icon) = line->icon.
+
+      lo_items->icon_tab_filter( icon      = line->icon
+                                 iconcolor = 'Positive'
+                                 count     = line->count
+                                 text      = text
+                                 key       = line->id
+                                 showall   = with_icon ).
+
+      lo_items->icon_tab_separator( ).
+
+    ENDLOOP.
+
+    mo_main_page = lo_items.
+  ENDMETHOD.
+
+  METHOD z2ui5_if_app~main.
+    me->client = client.
+
+    IF check_initialized = abap_false.
+      check_initialized = abap_true.
+
+      on_init( ).
+
+      render_Main( ).
+
+    ENDIF.
+
+    on_event( ).
+
+    Render_sub_app( ).
+  ENDMETHOD.
+
+  METHOD Render_sub_app.
+
+    READ TABLE mt_t002 REFERENCE INTO DATA(t002)
+         WITH KEY id = mv_selectedkey.
+
+    IF sy-subrc <> 0.
+      RETURN.
+    ENDIF.
+
+    CASE mv_selectedkey.
+
+      WHEN OTHERS.
+
+        IF mv_selectedkey <> mv_selectedkey_tmp.
+          CREATE OBJECT mo_app TYPE (t002->class).
+        ENDIF.
+
+        TRY.
+
+            CALL METHOD mo_app->('SET_APP_DATA')
+              EXPORTING table = t002->table.
+
+            render_Main( ).
+
+            ASSIGN mo_app->('MO_PARENT_VIEW') TO FIELD-SYMBOL(<view>).
+            IF <view> IS ASSIGNED.
+              <view> = mo_main_page.
+            ENDIF.
+
+            CALL METHOD mo_app->('Z2UI5_IF_APP~MAIN')
+              EXPORTING client = client.
+
+          CATCH cx_root.
+            RETURN.
+        ENDTRY.
+
+    ENDCASE.
+
+   ASSIGN mo_app->('MV_VIEW_DISPLAY') TO FIELD-SYMBOL(<view_display>).
+
+    IF <view_display> = abap_true.
+      <view_display> = abap_false.
+      client->view_display( mo_main_page->stringify( ) ).
+    ENDIF.
+
+   ASSIGN mo_app->('MV_VIEW_MODEL_UPDATE') TO FIELD-SYMBOL(<view_update>).
+
+    IF <view_update> = abap_true.
+      <view_update> = abap_false.
+      client->view_model_update( ).
+    ENDIF.
+
+    IF mv_selectedkey <> mv_selectedkey_tmp.
+
+      client->view_display( mo_main_page->stringify( ) ).
+
+      mv_selectedkey_tmp = mv_selectedkey.
+
+    ENDIF.
+  ENDMETHOD.
+
+ENDCLASS.

src/z2ui5_cl_demo_app_211.clas.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<abapGit version="v1.0.0" serializer="LCL_OBJECT_CLAS" serializer_version="v1.0.0">
+ <asx:abap xmlns:asx="http://www.sap.com/abapxml" version="1.0">
+  <asx:values>
+   <VSEOCLASS>
+    <CLSNAME>Z2UI5_CL_DEMO_APP_211</CLSNAME>
+    <LANGU>E</LANGU>
+    <DESCRIPT>App in App I</DESCRIPT>
+    <STATE>1</STATE>
+    <CLSCCINCL>X</CLSCCINCL>
+    <FIXPT>X</FIXPT>
+    <UNICODE>X</UNICODE>
+   </VSEOCLASS>
+  </asx:values>
+ </asx:abap>
+</abapGit>