Hi this is my first question. i am learning android. here i am trying to setup menu icon top menubar.
I have added sets of item in menu. i want to manage icon from activity.
I am trying to show hide menu icon.
Menu return null in onCreate.
Is there any other way to manage menu icon dynamically ?
please help.
This is the activity class code snippet where i am trying to manage menu.
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mMenu = (Menu) findViewById(R.id.menuBar);//here Menu return null
mMenuItem = mMenu.getItem(2);
mMenuItem.setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS);
mMenuItem.setVisible(true);
}
will appreciate your help. thanks.
First inflate menu to get MenuItem in activity method onCreateOptionsMenu and then try to get menu.getItemlike this :
#Override
public boolean onCreateOptionsMenu(Menu menu) {
super.onCreateOptionsMenu(menu);
getMenuInflater().inflate(R.menu.menu_activity, menu);
MenuItem item=menu.getItem(2);
item.setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS);
item.setVisible(true);
return true;
}
Dont put it on your onCreate because your menu is initialized in onCreateOptionsMenu
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.your_menu, menu);
mMenuItem = menu.getItem(2);
mMenuItem.setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS);
mMenuItem.setVisible(true);
return true;
}
Just follow the bellow instruction:
Step 1:
You need to inflate menu item from onCreateOptionsMenu(Menu menu)
Step 2:
You need a MenuInflater object that you can get using getMenuInflater()
API. Like: MenuInflater inflater = getMenuInflater();
Step 3:
Inflate you menu xml file like: inflater.inflate(R.menu.menu_bottom_nav,
menu);
Step 4:
You have to get menu object for specific item like : MenuItem menuItem =
menu.getItem(index). Here Index is the number depending on which menu item's
object you want to get.
Full code example:
#Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.menu_bottom_nav, menu);
MenuItem menuItem = menu.getItem(0);
return true;
}
Related
I am trying to add menu item and it's icon, but the design result does not show the item's title and icon, What should I do?
Use this in your class and see again :
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu, menu);
return super.onCreateOptionsMenu(menu);
}
How can I get an icon from the toolbar to be changed to a new one that I get with a method that is seen in a bbdd.
The problem is that I can not access the event that updates the activity to be able to change the icon.
I tried with the onPrepareOptionsMenu method, but I can not make it work.
I have not been able to do this by putting the code in onStart because it tells me that the menu object is empty or invalid.
public boolean onPrepareOptionsMenu(Menu menu) {
menu.clear();
Drawable iconoMenu = obtenerIconoMenuCarro();
getMenuInflater().inflate(R.menu.menu_categorias, menu);
menu.getItem(0).setIcon(iconoMenu);
return super.onPrepareOptionsMenu(menu);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu_categorias, menu);
Drawable iconoMenu = obtenerIconoMenuCarro();
menu.getItem(0).setIcon(iconoMenu);
return true;
}
My activities are extended by AppCompactActivity and loaded through an AdapterView.
And I have the problem when I go back to the fragmentDialog or since the next activity.
Thanks.
For me the simplest way was to keep a reference to the MenuItem for later use.
Obtain when the menu item is inflated.
MenuItem menuItem;
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main_menu, menu);
//find the menu item from the id
menuItem = menu.findItem(R.id.myMenuItem);
return true;
}
Then change the image where you need to with mipmap resource or #drawable.
menuItem.setIcon(R.mipmap.ic_other_icon);
I would put a number on the button that represent the numbers of notify like facebooks app.
I follow the first example in this topic :
Actionbar notification count icon (badge) like Google has
#Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuItem item = menu.findItem(R.id.badge);
MenuItemCompat.setActionView(item, R.layout.feed_update_count);
notifCount = (Button) MenuItemCompat.getActionView(item);
notifCount.setText(String.valueOf(SingletonGrafica.getNumeroNotifica()));
return super.onCreateOptionsMenu(menu);
}
When I call :
MenuItem item = menu.findItem(R.id.badge);
I obtain NullPointer Exception.Anyone can help me?
You need to create the menu first:
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the navigation_menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.navigation_menu, menu);
return true;
}
and if you want to update the menu you should do it in:
onPrepareOptionsMenu
if you want the onPrepareOptionsMenu function to be called again you can call invalidateOptionsMenu();
You can also add item from code
#Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuItem item = menu.add("Badge");MenuItemCompat.setActionView(item, R.layout.feed_update_count);
return true;
}
I have implemented ActionBar Navigation using Fragment. In my App i have one Activity and rest is in Fragments. In my MainActivity i am implementing menu like this.
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
Two Fragments uses Navigation Drawer and in their respected fragments i am inflating menu buttons to sort items.
#Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
super.onCreateOptionsMenu(menu, inflater);
inflater.inflate(R.menu.sort_button_shops, menu);
}
Now the Problem is if i open the Fragment 1 it works perfectly. When i open fragment 2, it shows 2 button to sort, one from Fragment 1 and the second one from Fragment 2.
I have tried to hide the button but it didn't worked.
Any Help will be Appreciated.
Thanks
When you inflate a new menu you are adding new items to the old Menu object, which is probably not what you intended.
Try this:
#Override
public boolean onCreateOptionsMenu(Menu menu) {
menu.removeItem(R.id.your_menu_item);
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
Try using this in onResume() of fragments.
MenuItem item = (MenuItem) findViewById(R.menu.activity_main);
item.setVisible(false);
this.invalidateOptionsMenu();
Background
Developing for Android 3.0, I have a HostActivity that is the superclass of NotebooksActivity and NoteActivity. NotebooksActivity includes a fragment, NotebooksFragment.
In HostActivity, I include a menu that I want to appear at the rightmost end of the options menu in the ActionBar, i.e. all menu items in subclasses of HostActivity should appear to the left of the menu items added in HostActivity.
Menu inflation in HostActivity:
#Override
public boolean onCreateOptionsMenu(Menu menu) {
final MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.host_menu, menu);
return super.onCreateOptionsMenu(menu);
}
The Problem
When I add menu items in NoteActivity, I achieve the desired order as expected:
#Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.notebook_menu, menu);
return super.onCreateOptionsMenu(menu);
}
However, when I add menu items in NotebooksFragment, because of how Fragments work, onCreateOptionsMenu is called after the same method in HostActivity, resulting in HostActivity's menu items appearing before NotebooksFragment's.
#Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
inflater.inflate(R.menu.notebooks_menu, menu);
SearchView sv = new SearchView(getActivity());
sv.setOnQueryTextListener(this);
menu.findItem(R.id.search_notebooks).setActionView(sv);
super.onCreateOptionsMenu(menu, inflater);
}
How can I achieve my desired menu ordering?
You can try using android:menuCategory and android:orderInCategory to more manually specify your ordering.
Or, use onPrepareOptionsMenu() in HostActivity, as that is called after onCreateOptionsMenu(). Downside is that it is called on every MENU button press, not just the first time.