android changing option menu items programmatically

Question

Is it possible to change the option menu items programmatically  Can anyone provide me with an example please   Also  I want to disable certain items  so that they don t listen to the clicks  is it possible

User · Answer

In case you have a BottomBar    Override public boolean onCreateOptionsMenu Menu menu         if  mBottomBar getCurrentTabId      R id tab more            getMenuInflater   inflate R menu more menu  menu              return true      Override public boolean onOptionsItemSelected MenuItem item        switch  item getItemId              case R id preferences              startActivity new Intent this  PreferenceActivity class                break             return super onOptionsItemSelected item       Then you just need to call    Override public void onBottomBarClick int tabId        supportInvalidateOptionsMenu

User · Answer

Try this code    Override public boolean onPrepareOptionsMenu Menu menu        this menu menu      updateMenuItems menu       return super onPrepareOptionsMenu menu       Override public boolean onCreateOptionsMenu Menu menu        MenuInflater inflater   getMenuInflater        inflater inflate R menu document list activity actions  menu       return super onCreateOptionsMenu menu        Override public boolean onOptionsItemSelected MenuItem item           Handle presses on the action bar items     if  item getItemId      android R id home            onHomeButtonPresssed         else if  item getItemId      R id action delete            useCheckBoxAdapter false          deleteDocuments          else if  item getItemId      R id share            useCheckBoxAdapter false          shareDocuments          else if  item getItemId      R id action tick            useCheckBoxAdapter true          onShowCheckboxes              updateMenuItems menu       return true     private void updateMenuItems Menu menu       if  useCheckBoxAdapter  amp  amp  menu    null            menu findItem R id action delete  setVisible true           menu findItem R id share  setVisible true           menu findItem R id action tick  setVisible false         else           menu findItem R id action delete  setVisible false           menu findItem R id share  setVisible false           menu findItem R id action tick  setVisible true             invalidateOptionsMenu

User · Answer

using the following lines i have done to add the values in menu   getActivity   invalidateOptionsMenu      try this work like a charm to me

User · Answer

You can do something simple like I did  Just change the text to what is needed when the menu item is touched  I needed to turn the sound off and on  plus the ability to perform an action by touching it  Here is my code        Override public boolean onOptionsItemSelected MenuItem item         switch  item getItemId          case R id audioOn          audioOn    audioOn          if  audioOn              item setTitle  Audio Off            else             item setTitle  Audio On            return true       case R id touchOn          touchOn    touchOn          if  touchOn              item setTitle  Touch Off            else             item setTitle  Touch On            return true      default          return super onOptionsItemSelected item             audioOn and touchOn are booleans checked in other parts of the code  Hope this helps

User · Answer

you can accomplish your task simply by implementing as below   private Menu menu     Override  public boolean onCreateOptionsMenu Menu menu        getMenuInflater   inflate R menu drive menu  menu       return true      Override public boolean onPrepareOptionsMenu Menu menu        this menu   menu      return super onPrepareOptionsMenu menu       Override public boolean onOptionsItemSelected MenuItem item        int id   item getItemId         if  id    R id action toggle grid            handleMenuOption id           return true         else if id    R id action toggle list           handleMenuOption id           return true             return super onOptionsItemSelected item      private void handleMenuOption int id        MenuItem item   menu findItem id       if  id    R id action toggle grid           item setVisible false           menu findItem R id action toggle list  setVisible true        else if  id    R id action toggle list           item setVisible false           menu findItem R id action toggle grid  setVisible true

User · Answer

To disable certain items   MenuItem item   menu findItem R id ID ASSING TO THE ITEM IN MENU XML   item setEnabled false

User · Answer

Kotlin Code for accessing toolbar OptionsMenu items programmatically  amp  change the text icon       1-We have our menu item in menu items file like  menu xml  sample code for this     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 balance        android title  0        android orderInCategory  100        app showAsAction  always    gt    lt  menu gt    2- Define a variable for accessing menu object in class     var menu  Menu    null   3- initial it in onCreateOptionsMenu    override fun onCreateOptionsMenu menu  Menu   Boolean          Inflate the menu  this adds items to the action bar if it is present      menuInflater inflate R menu main  menu      this menu   menu     return true     4- Access the menu items inside your code or fun    private fun initialBalanceMenuItemOnToolbar     var menuItemBalance   menu  findItem R id balance      menuItemBalance  title   Balance  toString      0 toString          for change icon   menuWalletBalance  icon

User · Answer

For anyone needs to change the options of the menu dynamically   private Menu menu            Override public boolean onCreateOptionsMenu Menu menu        this menu   menu      getMenuInflater   inflate R menu options  menu       return true             private void hideOption int id        MenuItem item   menu findItem id       item setVisible false      private void showOption int id        MenuItem item   menu findItem id       item setVisible true      private void setOptionTitle int id  String title        MenuItem item   menu findItem id       item setTitle title      private void setOptionIcon int id  int iconRes        MenuItem item   menu findItem id       item setIcon iconRes

User · Answer

If I have to change the contents of my options menu I perform it during the onMenuOpened    This allows me to check the running state at the very moment that the user is accessing the menu   public boolean onMenuOpened int featureid  Menu menu                menu clear            if   editable                        MenuItem itemAdd   menu add 0  REASSIGN  Menu NONE  context getString R string reassign                MenuItem itemMod   menu add 1  EDIT  Menu NONE  context getString R string modify                MenuItem itemDel   menu add 2  DELETE  Menu NONE  context getString R string delete                itemAdd setShortcut  0    a                itemMod setShortcut  1    m                itemDel setShortcut  2    d                      else                       MenuItem itemSave   menu add 3  SAVE  Menu NONE  context getString R string savechanges                itemSave setShortcut  0    S                        return true

User · Answer

Like Nikolay said do that in onPrepareOptionsMenu     For menu items in the action bar you have to invalidate the menu with activity invalidateOptionsMenu     This is descriped in more detail here How can I refresh the ActionBar when onPrepareOptionsMenu switched menu entries

User · Answer

Override     public boolean onCreateOptionsMenu Menu menu            MenuInflater inflater   getMenuInflater            inflater inflate R menu calendar  menu           if show list    true                      if  locale equalsIgnoreCase  sk    menu findItem R id action cyclesn  setVisible false            return true

User · Answer

menu xml     lt item      android id    id item1      android title  your Item  gt     lt  item gt    put in your java file    public void onPrepareOptionsMenu Menu menu         menu removeItem R id item1

[java] android: changing option menu items programmatically

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