In our app, we have a few fragments that can be shown either as fullscreen fragments or as dialog fragments. These fragments inherit from DialogFragment and we make sure to instantiate them correctly depending the mode the app is executed in (either fullscreen or dialog).
We thought about adding some extra functionality to some of these dialog fragments after the latest changes in the Toolbar widget were introduced in the support library with Lollipop. The idea is to have the type of options menu we would normally have in an ordinary fragment (i.e. the options menu inflated after onCreateOptionsMenu is executed) present in our subclasses of DialogFragment ONLY when these are visualized as dialogs. In short: when the fragments are shown in fullscreen mode we inflate a traditional options menu, and when the fragments are shown as dialogs we would like to have the same options menu inflated but using the new toolbar widget in standalone mode.
I followed the steps from http://android-developers.blogspot.dk/2014/10/appcompat-v21-material-design-for-pre.html and I managed to "activate" the toolbar, but it seems the menu is not inflated - see attached screenshots (picture one fragment in fullscreen mode, and picture two in dialog mode).
Is it even possible to inflate an options menu with the new toolbar in a DialogFragment?
Is it even possible to inflate an options menu with the new toolbar in
a DialogFragment?
first of all your design is ok and toolbar is supposed to be used every where lets have a look at this from Chris Banes google engineer link:
// Set an OnMenuItemClickListener to handle menu item clicks
toolbar.setOnMenuItemClickListener(
new Toolbar.OnMenuItemClickListener() {
#Override
public boolean onMenuItemClick(MenuItem item) {
// Handle the menu item
return true;
}
});
// Inflate a menu to be displayed in the toolbar
toolbar.inflateMenu(R.menu.your_toolbar_menu);
and also android developer toolbar standalone sample:
http://android-developers.blogspot.com/2014/10/appcompat-v21-material-design-for-pre.html
Yes, DialogFragment has setHasOptions() function. Define the toolbar in the layout of your dialog and use it as if it is in an activity. A toolbar doesnt mind being in an activity or a fragment or a dialog fragment.......
Be sure that you use
setHasOptionsMenu(true) in onActivityCreated method....
Then, as usual override
#Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
super.onCreateOptionsMenu(menu, inflater);
inflater.inflate(R.menu.my_menu, menu);
}
and
#Override
public boolean onOptionsItemSelected(MenuItem item) {
return super.onOptionsItemSelected(item);
}
Related
I have an android app that has a side menu and the main body of content is inside a fragment. So far there are 3 fragments (Home, Settings, Help). What I am trying to do is have the menu in the top right only appear in the home fragments.
Using
this.setHasOptionsMenu(false);
doesn't do anything so I am obviously using that wrong. Any ideas on how I can accomplish this?
Use:
menu.findItem(R.id.MENU_ITEM).setVisible(false);
For all of your menu items in the method onPrepareOptionsMenu(...). You should end up with something similar to this:
#Override
public void onPrepareOptionsMenu(Menu menu) {
super.onPrepareOptionsMenu(menu);
menu.findItem(R.id.MENU_ITEM_ONE).setVisible(false);
menu.findItem(R.id.MENU_ITEM_TWO).setVisible(false);
menu.findItem(R.id.MENU_ITEM_THREE).setVisible(false);
}
I want to make Option Menu for Android, I have visit this site. In their script, I found onPrepareOptionsMenu, I try to compile and run using Android 2.3.3 compiler with and without onPrepareOptionsMenu, both works, but I didn't see any difference.
public boolean onCreateOptionsMenu(Menu menu){
//code here
}
public boolean onOptionsItemSelected(MenuItem item){
//code here
}
public boolean onPrepareOptionsMenu(Menu menu){
//code here
}
What is actually onPrepareOptionsMenu method do? Is that method important? Could I just delete the method?
Addition
Oh, I also hear about Action Bar in Android 3.0, it says that Action Bar is the alternative way for make Option Menu, and it using onPrepareOptionsMenu. Is that right?
Thank you...
Take a look in the API:
Prepare the Screen's standard options menu to be displayed. This is called right before the menu is shown, every time it is shown. You can use this method to efficiently enable/disable items or otherwise dynamically modify the contents.
If you want to alter the menu before it's shown to the user, you can put code to do that into onPrepareOptionsMenu. I've used that dynamically to disable some menu options in some circumstances.
As an example of when one might want to disable a menu option, I had an app where there was a way of specifying a destination. One of my menu options was to calculate a route to the destination. However, if a destination wasn't specified, that option didn't apply, so I used onPrepareOptionsMenu to disable that menu option when it wasn't applicable.
From Android 3.0 and beyond, there's the ActionBar, which is a menu bar. The most important items go into the ActionBar itself, but then there's an overflow for when there's not enough room on the action bar. One can specify that menu items should always be in the overflow menu and never on the action bar itself. On some devices, the action bar overflow corresponds to the permanent menu button on the device, whereas on other devices which don't have a menu button the overflow menu is seen on the right hand side of the action bar as three vertical dots.
onCreateOptionsMenu is called once, when your activity is first created. If it returns false, no option menu is shown and onPrepareOptionsMenu is never called.
If onCreateOptionsMenu returns true, onPrepareOptionsMenu is also called before the activity is displayed, and also every time the options menu is invalidated. Use onPrepareOptionsMenu if you need to enable/disable, show/hide, or add/remove items after creating it.
If your menu does not change, use onCreateOptionsMenu.
example
#Override
public void onPrepareOptionsMenu(#NonNull Menu menu) {
super.onPrepareOptionsMenu(menu);
if(!URLUtil.isValidUrl(news.geturl())){
menu.findItem(R.id.share).setVisible(false);
}
}
I am using Theme Theme.Sherlock.Dialog tho show a dialog. Now, how can I add menu items at the top right corner of that dialog?
I use this code but I can't.
#Override
public boolean onCreateOptionsMenu(Menu menu) {
menu.add("Close")
.setIcon(R.drawable.button_close)
.setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS);
return true;
}
That is not possible. The action bar of the dialog has none of the features of the normal action bar.
Words of the ActionBarSherlock developer in this question.
please check if you are setting holo theme correctly and make sure you have initialized the actionbar in oncreate of activity. Above code works fine if you have followed the steps correctly
I'm having Sherlock Action Bar to show several icons in the Action Bar, like sharing, info, etc.
The thing is that I want to delete, for certain activities/fragments one of the buttons (sharing), but I can't do it.
My activity (StartActivity) extends from InfoActivity, which is the one that implements the onCreateOptionsMenu.
I tried to override the onCreateOptionsMenu method and do a clear() but it doesn't work:
#Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
super.onCreateOptionsMenu(menu, inflater);
}
Any ideas on how to do this?
Thanks a lot in advance.
Find the menu item in question and disable or hide it. Something like this in onCreateOptionsMenu() or onPrepareOptionsMenu() if you want to make it dynamic:
menu.findItem(R.id.menu_share).setVisible(false);
What I did in the end, was creating different classes: one with the Sharing button in the menu as a button, and one without, and just making the proper activity extend from the appropriate class.
For example, StartActivity, I don't want it to have sharing capabilities, so I made it extend from an Activity without the sharing button.
Thanks #NikolayElenkov for your help!
I have created an Activity that will behave like a popup menu is actually just a list of Menu Items. I then set the theme of the activity on my manifest to "Dialog" to get the popup effect. Now I need this activity to show when the Menu button is pressed on the device. I tried using onCreateOptionsMenu, then passing my Activity XML to the Inflater like so:
public boolean onCreateOptionsMenu(Menu menu){
new MenuInflater(this).inflate(R.layout.popup_menu, menu);
return (super.onCreateOptionsMenu(menu));
}
"popup_menu" is the XML for my Activity. But this didnt work. Any other suggestions??
you should start your activity there. I can tell you more if I see the code for your activity