I've got bottomNavigationView which is already created and attach to activity. Currently I'm trying to find out how to change text in one of navigation items which are inflated from res-menu dynamically.
I've tried to look into existing threads and none of that help me (I've already tried to pick menu from onCreateOptionsMenu and change it with setTitle option later but that wouldn't change text in the activity)
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu, menu);
this.menu = menu;
return true;
}
//later update on button click (this action is performed)
menu.findItem(R.id.secondItem).setTitle("New Text");
I've expected to change text to "New Text" but it's still same as before
Okay after a while of trying I've finally figured out how to do that. Instead of taking menu during onCreateOptionsMenu I've pick menu directly from bottomNavigationView when I click on the button
//your code to invoke this action
Menu menu = bottomNavigationView.getMenu();
menu.getItem(2).setTitle("New Text");
try this method inside your activity/fragment:
public void setNavigationTitle(String title) {
MenuItem menuItem = bottomNavigationView.getMenu().findItem(R.id.action_navigation_next);
menuItem.setTitle(title);
}
Related
I have been struggling to implement switching visibility of Share option on Menu between fragments. I am using sliding tab layout and has a fragment in each of the 2 tabs. First tab (uses list view) and when an item is selected, I am setting a flag as true and calls invalidateOptionsMenu() and it works fine by showing a share option on the App bar menu, but I am not able to cancel it when I move to the other fragment which has mainly preferences. Code is similar to the below.
public void setSharedIntentText(String text) {
sharedText = text;
if (shareOptionVisibility == false) {
shareOptionVisibility = true;
invalidateOptionsMenu();
}
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
// Locate MenuItem with ShareActionProvider
MenuItem shareItem = menu.findItem(R.id.menu_share);
// Fetch and store ShareActionProvider
mShareActionProvider = (ShareActionProvider) MenuItemCompat.getActionProvider(shareItem);
sendIntent.setAction(Intent.ACTION_SEND);
sendIntent.setType("text/plain");
sendIntent.putExtra(Intent.EXTRA_TEXT, sharedText);
mShareActionProvider.setShareIntent(sendIntent);
shareItem.setVisible(shareOptionVisibility);
When I switch between tabs, visibility should be set appropriately. I tried to set it onPause method of the first fragment, and then onResume method of second fragment, but control doesn't seem to go these methods when I look at the logcat. The code I have used to set visibility to false is as below in fragment2.
public void onResume() {
super.onResume();
Log.i(TAG, "On Resume ");
((MainActivity) getActivity()).shareOptionVisibility = false;
((MainActivity) getActivity()).invalidateOptionsMenu();
}
So would like to know where is the best place to put the code to control visibility when we switch between tabs. Here are the list of classes I use.
MainActivity, fragment1, fragment2, SlidingTabLayout, SlidingTabStrip and ViewPagerAdaptor. This code was implemented on top of the com.example.android.actionbarcompat.shareactionprovider example.
Thanks in advance
Issue now resolved by implementing the onCreateOptionsMenu method from the fragment rather than from the MainActivity.
Thanks
The regular way to change programmatically menu item icon is save reference to the menu after onCreateOptionsMenu() called:
private Menu mOptionsMenu;
#Override
public boolean onCreateOptionsMenu(Menu menu) {
mOptionsMenu = menu;
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
and then access it like: mOptionsMenu.findItem(R.id.action_something).setIcon(R.mipmap.new_icon);
My question is how to set new icon before onCreateOptionsMenu() called - so I don't have reference to the menu?
Thanks,
I don't think there is a way to get the reference to the menu before onCreateOptionsMenu(). Also why would you want to set an icon before the onCreateOptionsMenu?
Apologies for posting it as an answer as I need 50 points to be able to comment.
I have an ActionBarSherlock with one menu item in my bar. When I'm call
View item = findViewById(R.id.my_item);in activity's button onClick all works fine as expected.
But when I try to do this in onCreate or onResume or even in onPostResume it is always null. I also tryed do this in onCreateOptionsMenu(Menu menu) after inflating my menu from resource, but without any succes.
Therefore I can't understand when actionbar items created and how to catch this moment?
As it has been said here and here, getActionView returns the view that we sets in setActionView. Therefore, the only one way to customize action bar menu item described here
actually it is possible to get the view of the action item, even if it's not customized.
however, do note that sometimes action items get to be inside the overflow menu so you might get a null instead.
so, how can you do it?
here's a sample code:
public boolean onCreateOptionsMenu(final Menu menu) {
getSupportMenuInflater().inflate(R.menu.main, menu);
new Handler().post(new Runnable() {
#Override
public void run() {
final View syncItemView = findViewById(R.id.action_search);
...
this was tested when using actionBarSherlock library, on android 4.1.2 and android 2.3.5 .
another alternative is to use a more extensive way , used on the showcaseView library, here .
first of all get a menu reference as below:
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.custom_menu, menu);
customMenu = menu;
return super.onCreateOptionsMenu(menu);
}
after that you can get the item you need as below
customMenu.getItem(0);
I want to attach a menu item on click of which a sub menu opens.
I am able to get the output but my menu item always appears in the overflow menu. With some research I found out that setShowAsAction can be used to make it visible on the Action Bar but I can't set them for subMenu item.
#Override
public boolean onCreateOptionsMenu(Menu menu) {
//(this is valid) menu.add("File").setShowAsAction(2);
SubMenu sm = menu.addSubMenu("File");
//(can't do this) sm.setShowAsAction(2);
sm.add("Open");
sm.add("Close");
return true;
}
Use sm.getItem() to get the actual MenuItem for the submenu. You can then call setShowAsAction() on that.
In some methods of my Activity I want to check the title of menu or know if it is checked or not. How can I get Activity's menu. I need something like this.getMenu()
Be wary of invalidateOptionsMenu(). It recreates the entire menu. This has a lot of overhead and will reset embedded components like the SearchView. It took me quite a while to track down why my SearchView would "randomly" close.
I ended up capturing the menu as posted by Dark and then call onPrepareOptionsMenu(Menu) as necessary. This met my requirement without an nasty side effects. Gotcha: Make sure to do a null check in case you call onPrepareOptionsMenu() before the menu is created. I did this as below:
private Menu mOptionsMenu;
#Override
public boolean onCreateOptionsMenu(final Menu menu) {
mOptionsMenu = menu
...
}
private void updateOptionsMenu() {
if (mOptionsMenu != null) {
onPrepareOptionsMenu(mOptionsMenu);
}
}
Call invalidateOptionsMenu() instead of passing menu object around.
you could do it by passing the Menu object to your Activity class
public class MainActivity extends Activity
{
...
...
private Menu _menu = null;
#Override
public boolean onCreateOptionsMenu(Menu menu)
{
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.activity_main, menu);
_menu = menu;
return true;
}
private Menu getMenu()
{
//use it like this
return _menu;
}
}
There several callback methods that provide menu as a parameter.
You might wanna manipulate it there.
For example:
onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo)
onCreateOptionsMenu(Menu menu)
onCreatePanelMenu(int featureId, Menu menu)
There several more, best you take a look in activity documentation and look for your desired method:
http://developer.android.com/reference/android/app/Activity.html
As far as I could understand what you want here is which may help you:
1. Refer this tutorial over option menu.
2. Every time user presses menu button you can check it's title thru getTitle().
3. Or if you want to know the last menu item checked or selected when user has not pressed the menu button then you need to store the preferences when user presses.
Android now has the Toolbar widget which was a Menu you can set/get. Set the Toolbar in your Activity with some variation of setSupportActionBar(Toolbar) for stuff like onCreateOptionsMenu from a Fragment for example. Thread revived!