![]() Still it does not trigger or invoke the onCreateOptionsMenu () method. The Fragment class onCreate () method has setHasOptionsMenu (true). When using Fragments inside the ViewPager, every Fragment that is partially visible (left page, right page and visible page) and has called setHasOptionsMenu(true) will have onCreateOptionsMenu called, causing the items to appear in the action bar.Ĭalled the above inside the BaseActivity onCreate () and also the FragmentClass which extends the BaseActivity method. When you click a menu item, no matter where the menu item exist (fragment or activity), activity and fragment will all trigger this method. Activity also have onOptionsItemSelected(MenuItem item) method. You can override Fragment class’s onOptionsItemSelected(MenuItem item) method to handle Fragment menu item click event like below. ![]() With the use of this method app developer can easily hide and again show the button. Android button can be hide and show at application run time using setVisibility() method. Hide Show button in android programmatically How to set button visibility visible or Gone in android dynamically. Right click the res folder and choose New > Android Resource File. This is going to be in res/menu/main_menu. To show and hide individual menu item at run-time using Java code, you can call: MenuItem item = menu.findItem () tVisible () where menu is the Menu parameter passed to onCreateOptionsMenu (Menu menu) callback method. To completely disable an item, set it to invisible and disabled. Even if a menu item is not visible, it may still be invoked via its shortcut. ![]() This example demonstrate how to show/hide menu items dynamically using Java code, by calling setVisible() method.
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