Hide Show Action Bar Option Menu Item for different fragments

Question

I have a Sherlock Fragment Activity in which there are 3 Fragments   Fragment A  Fragment B  Fragment C are three fragments  I want to show a done option menu in Fragment B only   And the activity is started with Fragment A  When Fragment B is selected done button is added    Override public void onCreate Bundle savedInstanceState        super onCreate savedInstanceState       setHasOptionsMenu true       Override public void onCreateOptionsMenu Menu menu  MenuInflater inflater        if  menusInflated           inflater inflate R menu security  menu           menusInflated true             super onCreateOptionsMenu menu  inflater       When I again start Fragment A I want to options Menu DONE  which was set at Fragment B  for this I am doing like this  setHasOptionsMenu false   MenuItem item    MenuItem  menu findItem R id done item   item setVisible false     But this is not hiding at all  also it is giving NullPointerException when Activity if first started with Fragment A   Please let me know what is the problem

User · Answer

Late to the party but the answers above didn't seem to work for me.

My first tab fragment (uses getChildFragmentManager() for inner tabs) has the menu to show a search icon and uses android.support.v7.widget.SearchView to search within the inner tab fragment but navigating to other tabs (which also have inner tabs using getChildFragmentManager()) would not remove the search icon (as not required) and therefore still accessible with no function, maybe as I am using the below (ie outer main tabs with each inner tabs)

getChildFragmentManager();

However I use the below in my fragments containing/using the getChildFragmentManager() for inner tabs.

    //region onCreate
    @Override
    public void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);
    setRetainInstance(true);

    //access setHasOptionsMenu()
    setHasOptionsMenu(true);

    }
    //endregion onCreate

and then clear the menu item inside onPrepareOptionsMenu for fragments(search icon & functions)

    @Override
    public void onPrepareOptionsMenu(Menu menu) {

    super.onPrepareOptionsMenu(menu);

    //clear the menu/hide the icon & disable the search access/function ...
    //this will clear the menu entirely, so rewrite/draw the menu items after if needed
    menu.clear();

    }

Works well and navigating back to the tab/inner tab with the search icon functions re displays the search icon & functions.

Hope this helps...

User · Answer

By setting the Visibility of all items in Menu  the appbar menu or overflow menu will be Hide automatically  Example   private Menu menu change language              Override  public boolean onCreateOptionsMenu Menu menu                        menu change language   menu     menu change language findItem R id menu change language  setVisible true        return super onCreateOptionsMenu menu       Before going to other fragment use bellow code   if menu change language    null                     menu change language findItem R id menu change language     setVisible false

User · Answer

Try this   Override public boolean onCreateOptionsMenu Menu menu       MenuInflater inflater   getMenuInflater        inflater inflate R menu custom actionbar  menu       menu setGroupVisible

User · Answer

Try this     You don t need to override onCreateOptionsMenu   in your Fragment class again  Menu items visibility can be changed by overriding onPrepareOptionsMenu   method available in Fragment class     Override public void onCreate Bundle savedInstanceState        super onCreate savedInstanceState       setHasOptionsMenu true      Override public void onPrepareOptionsMenu Menu menu        menu findItem R id action search  setVisible false       super onPrepareOptionsMenu menu

User · Answer

You can make a menu for each fragment  and a global variable that mark which fragment is in use now  and check the value of the variable in onCreateOptionsMenu and inflate the correct menu    Override      public boolean onCreateOptionsMenu Menu menu             if  fragment it    6                 MenuInflater inflater   getMenuInflater                 inflater inflate R menu custom actionbar  menu

User · Answer

This will work for sure I guess        Declare Menu menu  MenuItem menuDoneItem      Then in your onCreateOptionMenu   method write the following     Override     public void onCreateOptionsMenu Menu menu  MenuInflater inflater            this menu menu          inflater inflate R menu secutity  menu                     In your onOptionItemSelected   method write the following     Override     public boolean onOptionsItemSelected MenuItem item            switch  item getItemId                  case R id done item                  this menuDoneItem item                  someOperation                    return true              default                  return super onOptionsItemSelected item                       Now Making invisible any menu item    public void menuInvisible    setHasOptionsMenu true     Take part in populating the action bar menu             menuDoneItem  MenuItem menu findItem R id done item                   menuRefresh setVisible false      make true to make the menu item visible       Use the above method whenever you need to make your menu item visible or invisiable   You can also refer this link for more details  it is a very useful one

User · Answer

Hello I got the best solution of this  suppose if u have to hide a particular item at on create Menu method and show that item in other fragment  I am taking an example of two menu item one is edit and other is delete  e g menu xml is as given below   sell menu xml    lt  xml version  1 0  encoding  utf-8   gt    lt menu xmlns android  http   schemas android com apk res android   xmlns app  http   schemas android com apk res-auto  gt    lt item     android id    id action edit      android icon   drawable ic edit white shadow 24dp      app showAsAction  always      android title  Edit    gt    lt item     android id    id action delete      android icon   drawable ic delete white shadow 24dp      app showAsAction  always      android title  Delete    gt      Now Override the two method in your activity  amp  make a field variable mMenu as     private Menu mMenu              field variable          Override   public boolean onCreateOptionsMenu Menu menu        getMenuInflater   inflate R menu sell menu  menu       this mMenu   menu       menu findItem R id action delete  setVisible false       return super onCreateOptionsMenu menu          Override  public boolean onOptionsItemSelected MenuItem item        if  item getItemId      R id action delete              do action         return true        else if  item getItemId      R id action edit             do action         return true             return super onOptionsItemSelected item        Make two following method in your Activity  amp  call them from fragment to hide and show your menu item  These method are as   public void showDeleteImageOption boolean status        if  menu    null            menu findItem R id action delete  setVisible status            public void showEditImageOption boolean status        if  menu    null            menu findItem R id action edit  setVisible status             That s Solve from my side I think this explanation will help you

User · Answer

This is one way of doing this   add a  group  to your menu    lt  xml version  1 0  encoding  utf-8   gt   lt menu xmlns android  http   schemas android com apk res android   gt        lt group         android id    id main menu group  gt            lt item android id    id done item                android title                     android icon                     android showAsAction        gt       lt  group gt   lt  menu gt    then  add a   Menu menu    variable to your activity and set it in your override of onCreateOptionsMenu    Override public boolean onCreateOptionsMenu Menu menu        this menu   menu         inflate your menu here     After  add and use this function to your activity when you d like to show hide the menu   public void showOverflowMenu boolean showMenu       if menu    null          return      menu setGroupVisible R id main menu group  showMenu       I am not saying this is the best only way  but it works well for me

User · Answer

To show action items  action buttons  in the ActionBar of fragments where they are only needed  do this   Lets say you want the save button to only show in the fragment where you accept input for items and not in the Fragment where you view a list of items  add this to the OnCreateOptionsMenu method of the Fragment where you view the items   public void onCreateOptionsMenu Menu menu  MenuInflater inflater         if  menu    null             menu findItem R id action save item  setVisible false             NOTE  For this to work  you need the onCreate   method in your Fragment  where you want to hide item button  the item view fragment in our example  and add setHasOptionsMenu true  like this   public void onCreate Bundle savedInstanceState        super onCreate savedInstanceState       setHasOptionsMenu true       Might not be the best option  but it works and it s simple

User · Answer

Even though the question is old and answered  There is a simpler answer to that than the above mentioned  You don t need to use any other variables  You can create the buttons on action bar whatever the fragment you want  instead of doing the visibility stuff show hide    Add the following in the fragment whatever u need the menu item   public void onCreateOptionsMenu Menu menu  MenuInflater inflater        inflater inflate R menu menu  menu       super onCreateOptionsMenu menu  inflater       Sample menu xml file    lt menu xmlns android  http   schemas android com apk res android   gt       lt item         android id    id action addFlat          android icon   drawable add          android showAsAction  ifRoom withText          android title   string action addFlat   gt   lt  menu gt    Handling onclick events is as usual

User · Answer

MenuItem Import   menu findItem R id Import     Import setVisible false

[android] Hide/Show Action Bar Option Menu Item for different fragments

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