I have a Fragment:
class HomeFragment : Fragment() { ... }
Now I'm trying to add an Actionbar to it, but this doesn't work:
setSupportActionBar(findViewById(R.id.toolbar_main))
How can I set the Support and then add Items to the ActionBar?
This is how it works in an AppCompatActivity:
// This adds items to the ActionBar
override fun onCreateOptionsMenu(menu: Menu): Boolean {
menuInflater.inflate(R.menu.menu_toolbar_main, menu)
return true
}
// This is the OnClickListener for the Buttons in the ActionBar
override fun onOptionsItemSelected(item: MenuItem) = when (item.itemId) {
R.id.toolbar_edit -> {
true
}
R.id.toolbar_search -> {
true
}
else -> {
// If we got here, the user's action was not recognized.
// Invoke the superclass to handle it.
super.onOptionsItemSelected(item)
}
}
Big thanks in advance!
Override onCreateOptionsMenu in your Fragment and inflate your menu inside. Than in onCreate method of Fragment set setHasOptionsMenu() to true. To inflate different menus depending on Fragment creation clear the menu first.
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setHasOptionsMenu(true)
}
override fun onCreateOptionsMenu(menu: Menu?, inflater: MenuInflater?) {
super.onCreateOptionsMenu(menu, inflater)
inflater?.inflate(Your menu here, menu)
}
Related
I inflate my SearchView into my AppBarLayout and MaterialToolbar in MainActivity. When I search items in ListFragment and open DetailFragment for an item then get back my AppBarLayout inflates again and I see my list is cleared. I want it to save query and show my previous state.
In ListFragment I do:
override fun onCreateOptionsMenu(menu: Menu, menuInflater: MenuInflater) {
menuInflater.inflate(R.menu.menu_main, menu)
}
override fun onPrepareOptionsMenu(menu: Menu) {
super.onPrepareOptionsMenu(menu)
setupSearchView(menu)
}
private fun setupSearchView(menu: Menu) {
userSearchView = menu.findItem(R.id.search).actionView as SearchView
userSearchView?.setOnQueryTextListener(object : SearchView.OnQueryTextListener {
override fun onQueryTextSubmit(query: String?): Boolean {
query?.let(viewModel::trySearching)
return true
}
override fun onQueryTextChange(newText: String?): Boolean {
newText?.let(viewModel::trySearching)
return true
}
})
}
In DetailFragment I do:
override fun onPrepareOptionsMenu(menu: Menu) {
super.onPrepareOptionsMenu(menu)
menu.clear()
}
For navigation I use AAC nav component
I want add confirmation dialog before my fragment close. I have added the onOptionsItemSelected function in my fragment. however when i click the back arrow button the function is not executed. Here's my code
override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
super.onViewCreated(view, savedInstanceState)
(activity as AppCompatActivity).supportActionBar?.show()
(activity as AppCompatActivity).supportActionBar?.setDisplayHomeAsUpEnabled(true)
(activity as AppCompatActivity).supportActionBar?.setDisplayShowHomeEnabled(true)
setHasOptionsMenu(true)
}
override fun onCreateOptionsMenu(menu: Menu, inflater: MenuInflater) {
inflater.inflate(R.menu.menu_input, menu)
return super.onCreateOptionsMenu(menu, inflater)
}
override fun onOptionsItemSelected(item: MenuItem): Boolean {
when (item.itemId) {
android.R.id.home -> "testing".debugTag("Debug")
}
return super.onOptionsItemSelected(item)
}
Try to set the action bar in onCreate.
setSupportActionBar( yourActionBar );
I have two fragments and a toolbar with a menu. I want to be able to switch fragments when a menu item is selected by calling the method in the fragment that does this. Problem is, I get this error when I try running the app with the code below. java.lang.IllegalStateException: Fragment FirstFragment{5ce330b (f5c2d362-d3fb-4346-9971-dd7be653e609)} not associated with a fragment manager.
MainActivity.kt
class MainActivity : AppCompatActivity() {
lateinit var adapter: Adapter
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
setSupportActionBar(findViewById(R.id.toolbar))
}
override fun onCreateOptionsMenu(menu: Menu): Boolean {
// Inflate the menu; this adds items to the action bar if it is present.
menuInflater.inflate(R.menu.menu_main, menu)
return true
}
override fun onOptionsItemSelected(item: MenuItem): Boolean {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
return when (item.itemId) {
R.id.action_settings -> {
FirstFragment().settings()
true
}
else -> super.onOptionsItemSelected(item)
}
}
}
FirstFragment.kt
fun settings() {
findNavController().navigate(R.id.action_FirstFragment_to_SecondFragment)
}
How can I implement a fragment manager so I can call this method via MenuItem and not get an exception? Thanks in advance!
Thanks for the help! I solved the issue by creating the MenuItem in my first fragment like so:
lateinit var second: MenuItem
override fun onCreateOptionsMenu(menu: Menu, inflater: MenuInflater) {
second = menu.add("second fragment")
second.setOnMenuItemClickListener() {
settings()
true
}
}
fun settings() {
findNavController().navigate(R.id.action_FirstFragment_to_SecondFragment)
}
I have a navigation host activity that inflates 2 fragments, one the main host fragment and the event fragments, I need to show in the event fragment a menu action , but this menu action is also shown in the main fragment which I dont want to show
How do I show this menu only in the event fragment ?
MainActivity
class MainActivity: AppCompatActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
val navController = Navigation.findNavController(this, R.id.nav_host_fragment)
setupActionBar(navController)
}
private fun setupActionBar(navController: NavController) {
NavigationUI.setupActionBarWithNavController(this, navController)
}
override fun onSupportNavigateUp(): Boolean {
return Navigation.findNavController(this, R.id.nav_host_fragment).navigateUp()
|| super.onSupportNavigateUp()
}
override fun onCreateOptionsMenu(menu: Menu?): Boolean {
MenuInflater(this).inflate(R.menu.menu, menu)
return super.onCreateOptionsMenu(menu)
}
override fun onOptionsItemSelected(item: MenuItem?): Boolean {
NavigationUI.onNavDestinationSelected(item!!, Navigation.findNavController(this, R.id.nav_host_fragment))
return super.onOptionsItemSelected(item)
}
Menu
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">
<item
android:id="#+id/eventsFragment"
app:showAsAction="ifRoom|always"
android:title="¿ Where to buy ?" />
</menu>
I need to show this menu only in the eventsFragment
EventFragment
class EventsFragment : Fragment() {
override fun onCreateView(
inflater: LayoutInflater, container: ViewGroup?,
savedInstanceState: Bundle?
): View? {
// Inflate the layout for this fragment
return inflater.inflate(R.layout.fragment_event, container, false)
}
But instead of just showing it just in the EventFragment it also shows it in the first fragment that MainActivity as hosts inflates
How can I just have this menu in my EventsFragment?
In MainActivity menuItem setVisible(false):
override fun onCreateOptionsMenu(menu: Menu?): Boolean {
MenuInflater(this).inflate(R.menu.menu, menu)
val menuItem : MenuItem = menu.findItem(R.id.eventsFragment);
if (menuItem!= null)
menuItem.setVisible(false);
return super.onCreateOptionsMenu(menu)
}
In EventsFragment setvisibility of menuitem to true as shown below:
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setHasOptionsMenu(true)
}
override fun onPrepareOptionsMenu(menu: Menu) {
val menuItem = menu.findItem(R.id.eventsFragment)
if (menuItem != null)
menuItem.isVisible = true
}
You could try considering Inflating the menu from inside the fragment. ie. fragments onCreate() method and destroying it from onDestroy() function of the fragment
I am getting an issue of hiding and adding the menu item in fragment and navigation drawer as I in my application I have logout and adding contact menu and I want to set logout option in all but don't need an adding contact button in all screen. As my application contains four view pager tab fragment and navigation drawer. I have added my menu through menu XML file.
And I want my logout option in all fragment in navigation drawer but adding contact in only on my first tab fragment.
Here is code of Main Activity:
override fun onCreateOptionsMenu(menu: Menu): Boolean {
val menuInflater = menuInflater.inflate(R.menu.main, menu)
val menuLogout = menu.findItem(R.id.logout)
val menuadd = menu.findItem(R.id.iadd_contact)
return super.onCreateOptionsMenu(menu)
}
override fun onOptionsItemSelected(item: android.view.MenuItem): Boolean {
when (item.itemId) {
R.id.logout -> {
postLogout(path, params) { response ->
}
}
return true
R.id.iadd_contact -> {
val intent = Intent(Intent.ACTION_INSERT)
intent.setType(ContactsContract.Contacts.CONTENT_TYPE)
startActivity(intent)
return true
}
}
return super.onOptionsItemSelected(item)
}
What is going with that when I move from fragment A to Fragment B i want only logout button enable and add contact disable and then when I again go revert back from Fragment B to Fragment A my add contact menu also get disable but that I want to be in Fragment A only and same as it happens when I open my navigation drawer
And in fragment I have set my code like this:
override fun onCreateOptionsMenu(menu: Menu?, inflater: MenuInflater?) {
super.onCreateOptionsMenu(menu, inflater)
menu!!.removeItem(R.id.iadd_contact)
}
and it oncreateview:
override fun onCreateView(inflater: LayoutInflater?, container: ViewGroup?, savedInstanceState: Bundle?): View? {
// TODO Auto-generated method stub
setHasOptionsMenu(false)
rootv = inflater!!.inflate(R.layout.edit_profile, container, false)
activity.invalidateOptionsMenu()
return rootv
}
Simply I just want my R.id.iadd_contact in my first tab fragment to enable and in all other fragment disable so due to fragment back stack or moving again from another fragment to my first tab fragment my add R.id.iadd_contact get also removed.
first override onCreate Method
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setHasOptionsMenu(true)
}
And then inflate menu in your fragment
override fun onCreateOptionsMenu(menu: Menu?, inflater: MenuInflater?) {
super.onCreateOptionsMenu(menu, inflater)
menu!!.clear()
inflater!!.inflate(R.menu.main, menu)
}