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 have a Sherlock Fragment Activity in which there are 3 Fragments.
Fragment A, Fragment B, Fragment C are three fragments. I want to show a done option menu in Fragment B only.
And the activity is started with Fragment A. When Fragment B is selected done button is added.
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setHasOptionsMenu(true);
}
#Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
if(!menusInflated){
inflater.inflate(R.menu.security, menu);
menusInflated=true;
}
super.onCreateOptionsMenu(menu, inflater);
}
When I again start Fragment A I want to options Menu DONE (which was set at Fragment B) for this I am doing like this
setHasOptionsMenu(false);
MenuItem item = (MenuItem) menu.findItem(R.id.done_item);
item.setVisible(false);
But this is not hiding at all, also it is giving NullPointerException when Activity if first started with Fragment A.
Please let me know what is the problem.
Try this...
You don't need to override onCreateOptionsMenu() in your Fragment class again. Menu items visibility can be changed by overriding onPrepareOptionsMenu() method available in Fragment class.
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setHasOptionsMenu(true);
}
#Override
public void onPrepareOptionsMenu(Menu menu) {
menu.findItem(R.id.action_search).setVisible(false);
super.onPrepareOptionsMenu(menu);
}
This is one way of doing this:
add a "group" to your menu:
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android" >
<group
android:id="#+id/main_menu_group">
<item android:id="#+id/done_item"
android:title="..."
android:icon="..."
android:showAsAction="..."/>
</group>
</menu>
then, add a
Menu menu;
variable to your activity and set it in your override of onCreateOptionsMenu:
#Override
public boolean onCreateOptionsMenu(Menu menu) {
this.menu = menu;
// inflate your menu here
}
After, add and use this function to your activity when you'd like to show/hide the menu:
public void showOverflowMenu(boolean showMenu){
if(menu == null)
return;
menu.setGroupVisible(R.id.main_menu_group, showMenu);
}
I am not saying this is the best/only way, but it works well for me.
To show action items (action buttons) in the ActionBar of fragments where they are only needed, do this:
Lets say you want the save button to only show in the fragment where you accept input for items and not in the Fragment where you view a list of items, add this to the OnCreateOptionsMenu method of the Fragment where you view the items:
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
if (menu != null) {
menu.findItem(R.id.action_save_item).setVisible(false);
}
}
NOTE: For this to work, you need the onCreate() method in your Fragment (where you want to hide item button, the item view fragment in our example) and add setHasOptionsMenu(true) like this:
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setHasOptionsMenu(true);
}
Might not be the best option, but it works and it's simple.
This will work for sure I guess...
// Declare
Menu menu;
MenuItem menuDoneItem;
// Then in your onCreateOptionMenu() method write the following...
#Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
this.menu=menu;
inflater.inflate(R.menu.secutity, menu);
}
// In your onOptionItemSelected() method write the following...
#Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.done_item:
this.menuDoneItem=item;
someOperation();
return true;
default:
return super.onOptionsItemSelected(item);
}
}
// Now Making invisible any menu item...
public void menuInvisible(){
setHasOptionsMenu(true);// Take part in populating the action bar menu
menuDoneItem=(MenuItem)menu.findItem(R.id.done_item);
menuRefresh.setVisible(false); // make true to make the menu item visible.
}
//Use the above method whenever you need to make your menu item visible or invisiable
You can also refer this link for more details, it is a very useful one.
MenuItem Import = menu.findItem(R.id.Import);
Import.setVisible(false)
Try this
#Override
public boolean onCreateOptionsMenu(Menu menu){
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.custom_actionbar, menu);
menu.setGroupVisible(...);
}
By setting the Visibility of all items in Menu, the appbar menu or overflow menu will be Hide automatically
Example
private Menu menu_change_language;
...
...
#Override
public boolean onCreateOptionsMenu(Menu menu) {
...
...
menu_change_language = menu;
menu_change_language.findItem(R.id.menu_change_language).setVisible(true);
return super.onCreateOptionsMenu(menu);
}
Before going to other fragment use bellow code:
if(menu_change_language != null){
menu_change_language.findItem(R.id.menu_change_language)
.setVisible(false);
}
Hello I got the best solution of this, suppose if u have to hide a particular item at on create Menu method and show that item in other fragment. I am taking an example of two menu item one is edit and other is delete. e.g menu xml is as given below:
sell_menu.xml
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">
<item
android:id="#+id/action_edit"
android:icon="#drawable/ic_edit_white_shadow_24dp"
app:showAsAction="always"
android:title="Edit" />
<item
android:id="#+id/action_delete"
android:icon="#drawable/ic_delete_white_shadow_24dp"
app:showAsAction="always"
android:title="Delete" />
Now Override the two method in your activity & make a field variable mMenu as:
private Menu mMenu; // field variable
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.sell_menu, menu);
this.mMenu = menu;
menu.findItem(R.id.action_delete).setVisible(false);
return super.onCreateOptionsMenu(menu);
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
if (item.getItemId() == R.id.action_delete) {
// do action
return true;
} else if (item.getItemId() == R.id.action_edit) {
// do action
return true;
}
return super.onOptionsItemSelected(item);
}
Make two following method in your Activity & call them from fragment to hide and show your menu item. These method are as:
public void showDeleteImageOption(boolean status) {
if (menu != null) {
menu.findItem(R.id.action_delete).setVisible(status);
}
}
public void showEditImageOption(boolean status) {
if (menu != null) {
menu.findItem(R.id.action_edit).setVisible(status);
}
}
That's Solve from my side,I think this explanation will help you.
You can make a menu for each fragment, and a global variable that mark which fragment is in use now.
and check the value of the variable in onCreateOptionsMenu and inflate the correct menu
#Override
public boolean onCreateOptionsMenu(Menu menu) {
if (fragment_it == 6) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.custom_actionbar, menu);
}
}
Okay I spend couple of hour to get this solution.apparently you can get menuitem from your toolbar to anywhere in activity or fragment. So in my case.
var menuItem = toolbar.menu;
Now to get specfic item from menu item
favIcon = menuItem.findItem(R.id.favourite);
Note: favIcon is MenuItem declare global
Now if you can do whatever you want to do for this icon
eg. to make it invisible
favIcon?.isVisible=false
Even though the question is old and answered. There is a simpler answer to that than the above mentioned. You don't need to use any other variables.
You can create the buttons on action bar whatever the fragment you want, instead of doing the visibility stuff(show/hide).
Add the following in the fragment whatever u need the menu item.
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
inflater.inflate(R.menu.menu, menu);
super.onCreateOptionsMenu(menu, inflater);
}
Sample menu.xml file:
<menu xmlns:android="http://schemas.android.com/apk/res/android" >
<item
android:id="#+id/action_addFlat"
android:icon="#drawable/add"
android:showAsAction="ifRoom|withText"
android:title="#string/action_addFlat"/>
</menu>
Handling onclick events is as usual.
Late to the party but the answers above didn't seem to work for me.
My first tab fragment (uses getChildFragmentManager() for inner tabs) has the menu to show a search icon and uses android.support.v7.widget.SearchView to search within the inner tab fragment but navigating to other tabs (which also have inner tabs using getChildFragmentManager()) would not remove the search icon (as not required) and therefore still accessible with no function, maybe as I am using the below (ie outer main tabs with each inner tabs)
getChildFragmentManager();
However I use the below in my fragments containing/using the getChildFragmentManager() for inner tabs.
//region onCreate
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setRetainInstance(true);
//access setHasOptionsMenu()
setHasOptionsMenu(true);
}
//endregion onCreate
and then clear the menu item inside onPrepareOptionsMenu for fragments(search icon & functions)
#Override
public void onPrepareOptionsMenu(Menu menu) {
super.onPrepareOptionsMenu(menu);
//clear the menu/hide the icon & disable the search access/function ...
//this will clear the menu entirely, so rewrite/draw the menu items after if needed
menu.clear();
}
Works well and navigating back to the tab/inner tab with the search icon functions re displays the search icon & functions.
Hope this helps...
For some reason the method was not working for me this is how I solved it according to the accepted solution
//This should be in on create
new Handler().postDelayed(new Runnable() {
#Override
public void run() {
showOverflowMenu(false);
}
},100);
#Override
public boolean onCreateOptionsMenu(Menu menu) {
this.menu = menu;
getMenuInflater().inflate(R.menu.options_menu, menu);
return true;
}
public void showOverflowMenu(boolean showMenu){
if(menu == null)
return;
menu.setGroupVisible(R.id.grp, showMenu);
}
I am using ActionBarSharlock in my Application for Action Bar. In actionBar I take a button and If I click the button I see a menu with three items. Here is the code-
public boolean onCreateOptionsMenu(Menu menu) {
SubMenu subMenu1 = menu.addSubMenu("Action Item");
subMenu1.add("Sample");
subMenu1.add("Menu");
subMenu1.add("Items");
MenuItem subMenu1Item = subMenu1.getItem();
subMenu1Item.setIcon(R.drawable.sub_menu_icon);
subMenu1Item.setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT);
return super.onCreateOptionsMenu(menu);
}
But I don't know how to make this three submenu1 item clickable and move one activity to another. What kind of function I need to write. Let me know It will be great help
First: why don't you add your menu items in the XML menu file in res/menu/your_file.xml:
<menu xmlns:android="http://schemas.android.com/apk/res/android" >
<item android:id="#+id/action_search"
android:icon="#drawable/ic_action_search"
android:title="#string/action_search"/>
<item android:id="#+id/action_compose"
android:icon="#drawable/ic_action_compose"
android:title="#string/action_compose" />
then inflate the menu in your activity:
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu items for use in the action bar
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.main_activity_actions, menu);
return super.onCreateOptionsMenu(menu);
}
and then override the onOptionsItemSelected method to handle the menu item clicks.
Also Google developed their own library for ActionBar on API level < 11 so you should try using that one as well instead of Sherlock.
Hope this helps. Best of luck.
Lets assume, that I have two activities. One called MainActivity, and the other called PopupActivity.
I want to have a context menu in MainActivity, after the user visited PopupActivity.
Main [no menu] --> startActivity() / startActivityForResult()
==> Popup --> back / finish()
==> Main [now has menu].
Environment details:
minSDK: 10 (needed for backward compatibility)
targetSDK: 17
targetDevice: GalaxyTab 2.0
If the MainActivity has at least one element at the begining state, i can add / remove the desired menu items via onPrepareOptionsMenu. But if the MainActiviy has 0 menu elements inside, android doesn't even render the menu button on the top right corner.
My question is:
What do i miss?
How to tell android, to render the menu button, because i want to add menu items to it.
Workaround soultions can't work (like separating the Activity into two, etc.), because the whole problem is a bit more complex, but the core of it is this. I don't need menu items at the begining state, and i need them in a second one.
main_menu.xml:
<menu xmlns:android="http://schemas.android.com/apk/res/android">
<item android:id="#+id/menu_add" android:title="#string/add"></item>
<item android:id="#+id/menu_remove" android:title="#string/remove" ></item>
</menu>
MainActivity.java
#Override
public boolean onCreateOptionsMenu(Menu menu)
{
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.main_menu, menu);
return true;
}
#Override
public boolean onPrepareOptionsMenu(Menu menu)
{
if (initState)
{
menu.findItem(R.id.menu_add).setVisible(false);
menu.findItem(R.id.menu_remove).setVisible(false);
} else
{
menu.findItem(R.id.menu_add).setVisible(true);
menu.findItem(R.id.menu_remove).setVisible(true);
}
return super.onPrepareOptionsMenu(menu);
}
First Create two menu. one for initial stage and second for after visited PopupActivity.
Replace Your onCreateOptionsMenu() with
#Override
public boolean onCreateOptionsMenu(Menu menu)
{
MenuInflater inflater = getMenuInflater();
if (initState)
inflater.inflate(R.menu.invisible_main_menu, menu);
else
inflater.inflate(R.menu.visible_main_menu, menu);
return true;
}
i have a menu that contains just one item.
Button exit;
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// TODO Auto-generated method stub
super.onCreateOptionsMenu(menu);
MenuInflater blowUp = getMenuInflater();
blowUp.inflate(R.menu.exitmenu, menu);
return true;
}
exit=(Button)findViewById(R.id.bexitMenuExit);
if i add listener to exit button , i got excpetion (null pointer), i am sure that there is no syntax error, the button exit is comming from this menu
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android" >
<item android:id="#+id/bexitMenuExit"
android:title="Exit"
android:icon="#android:drawable/ic_menu_close_clear_cancel"
></item>
</menu>
what am i doing wrong?
There is no need to initialize Button and this doesn't make sence for me.
Just inflate your Menu and just override onOptionsItemSelected method:
#Override
public boolean onCreateOptionsMenu(Menu menu) {
new MenuInflater(getApplicationContext()).inflate(R.menu.exitmenu, menu);
return super.onCreateOptionsMenu(menu);
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
switch(item.getId()) {
case R.id.bexitMenuExit:
// work that will start when you click on this
...
}
}
Also, there is no need to use OnClickListener, for this there is onOptionsItemSelected method and you should use it.
for menu items, as stated by Sajmon, you can use onOptionsIemsSelected function. onClickListener is used by views while this function has been designed to be used specifically by menu items using switch case.