We Keep Coding

How to change menu title programmatically in Android

Here is my menu:
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
<group android:checkableBehavior="single">
<item
android:id="#+id/home"
android:icon="#drawable/home"
android:title="#string/bottom_basic_home" />
<item
android:id="#+id/mancust"
android:icon="#drawable/ic_contacts1"
android:title="#string/customers" />
<item
android:id="#+id/catalog"
android:icon="#drawable/catalog"
android:title="#string/catalog" />
</group>
<item android:title="About"> //my changes want to appear for this item
<menu>
<group android:checkableBehavior="single">
<item
android:id="#+id/help"
android:icon="#drawable/ic_help_outline_black_24dp"
android:title="#string/help"
/>
<item
android:id="#+id/codex_logout"
android:icon="#drawable/logout"
android:title="#string/logout" />
</group>
</menu>
</item>
</menu>
I am implementing navigation drawer in my Android application. How do I set a menu group item title programmatically?

You can add id tag to your item in xml and find that item in the menu programmatically and set a new title.
Menu XML:
<item
android:id="#+id/about_title"
android:title="About">
Java/Kotlin:
val navView: NavigationView = findViewById(R.id.nav_view)
val aboutTitle = navView.menu.findItem(R.id.about_title)
aboutTitle.title = "New Title"

tools:showIn="navigation_view" not working

When i append tools:showIn="navigation_view" to my code it's not showing. But in video which i watched from Youtube this is working fine. What is the problem? Also I can't add library called
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
tools:showIn="navigation_view">
<group android:checkableBehavior="single">
<item
android:id="#+id/nav_home"
android:icon="#drawable/ic_main_home"
android:title="#string/home" />
<item
android:id="#+id/nav_timetable"
android:icon="#drawable/ic_subject_timetable"
android:title="#string/timetable" />
<item
android:id="#+id/nav_ogrnot"
android:icon="#drawable/ic_ogrnot"
android:title="#string/ogrnot" />
<item
android:id="#+id/nav_yemek_menu"
android:icon="#drawable/ic_yemek_menu"
android:title="#string/yemek_menu" />
<item
android:id="#+id/nav_homework"
android:icon="#drawable/ic_homework"
android:title="#string/homework" />
</group>
<item android:title="#string/optional">
<menu>
<item
android:id="#+id/nav_to_do_list"
android:icon="#drawable/ic_to_do_list"
android:title="#string/to_do_list" />
<item
android:id="#+id/nav_logout"
android:icon="#drawable/ic_logout"
android:title="#string/logout" />
</menu>
</item>
</menu>

I had the same issue with my code. The first thing I did was to delete my already created menu file (Android resource file) and start the process from the top.
Secondly, after creating the menu resource file, on a new line, after typing (tool:), press alt+enter to add this automatically for you... xmlns:tools="http://schemas.android.com/tools"... Then you can go ahead to type in tools:showIn=".....".
To know if this works, in line of code in tools:showIn, when typing the name in the quotes, just type "na'... if there are other popups or suggestions, then you're good to go.
Hope this helps.

Why do you use onPrepareOptionsMenu to create a menu where the layout file appears at the top of the screen but the runtime appears at the bottom?

I want to make a menu on my app's top like which showed me in the AS's xml, but in Android 6.0,it's on the bottom. How can I solve this problem? Thanks.
I have tried many methods like change my code, add the android:showAsAction='always', but it doesn't work.
<menu
xmlns:android="http://schemas.android.com/apk/res/android">
<item
android:id="#+id/menu_new_folder"
android:title="#string/menu_create_folder" />
<item
android:id="#+id/menu_export_text"
android:title="#string/menu_export_text"/>
<item
android:id="#+id/menu_sync"
android:title="#string/menu_sync"/>
<item
android:id="#+id/menu_setting"
android:title="#string/menu_setting" />
<item
android:id="#+id/menu_search"
android:title="#string/menu_search"/>

Create menu like this -
<menu
xmlns:android="http://schemas.android.com/apk/res/android">
<item
android:id="#+id/action_more"
android:orderInCategory="1"
android:icon="#drawable/ic_menu_dots"
android:title="more"
app:showAsAction="always">
<menu>
<item
android:id="#+id/menu_new_folder"
android:title="#string/menu_create_folder" />
<item
android:id="#+id/menu_export_text"
android:title="#string/menu_export_text"/>
<item
android:id="#+id/menu_sync"
android:title="#string/menu_sync"/>
<item
android:id="#+id/menu_setting"
android:title="#string/menu_setting" />
<item
android:id="#+id/menu_search"
android:title="#string/menu_search"/>
</menu>
</item>
</menu>
And in your activity's onCreateOptionMenu add this -
menu.findItem(R.id.action_more).setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS)

Actions aren't showing on Toolbar with "ifRoom"

I have problem with actions on Toolbar in my Android app.
I have a group with some actions with app:showAsAction="ifRoom" attribute. Everything works fine if there are fewer than 4 items with ifRoom. But when I add fourth item, then all the items disappear from toolbar.
It works fine:
<menu xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto">
<group android:id="#+id/group_paint"
android:orderInCategory="1"
app:showAsAction="ifRoom">
<item android:id="#+id/action_layers"
android:icon="#drawable/ic_layers_white_24dp"
android:title="#string/action_layers"
android:orderInCategory="3"
app:showAsAction="ifRoom"/>
<item android:id="#+id/action_tool"
android:icon="#drawable/ic_properties_white_24dp"
android:title="#string/action_tool"
android:orderInCategory="4"
app:showAsAction="ifRoom" />
<item android:id="#+id/action_action1"
android:icon="#drawable/ic_action1_white_24dp"
android:title="#string/action_1"
android:orderInCategory="7"
app:showAsAction="ifRoom" />
<item
android:id="#+id/action_settings"
android:icon="#drawable/ic_settings_white_24dp"
android:title="#string/action_settings"
android:orderInCategory="7"
app:showAsAction="never" />
</group>
</menu>
Unexpected result:
<menu xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto">
<group android:id="#+id/group_paint"
android:orderInCategory="1"
app:showAsAction="ifRoom">
<item android:id="#+id/action_layers"
android:icon="#drawable/ic_layers_white_24dp"
android:title="#string/action_layers"
android:orderInCategory="3"
app:showAsAction="ifRoom"/>
<item android:id="#+id/action_tool"
android:icon="#drawable/ic_properties_white_24dp"
android:title="#string/action_tool"
android:orderInCategory="4"
app:showAsAction="ifRoom" />
<item android:id="#+id/action_action1"
android:icon="#drawable/ic_action1_white_24dp"
android:title="#string/action_1"
android:orderInCategory="7"
app:showAsAction="ifRoom" />
<item android:id="#+id/action_action2"
android:icon="#drawable/ic_action2_white_24dp"
android:title="#string/action_2"
android:orderInCategory="8"
app:showAsAction="ifRoom" />
<item
android:id="#+id/action_settings"
android:icon="#drawable/ic_settings_white_24dp"
android:title="#string/action_settings"
android:orderInCategory="7"
app:showAsAction="never" />
</group>
</menu>
What I would like to see is: three actions on toolbar and the fourth in the overflow menu.

You are using the <group> element to treat the items as a group. If you do not want to treat the items as a group (e.g., you want them to appear in the action bar individually based upon available space), get rid of the <group> element.

Navigation Drawer menu items selected within different groups

I have a working Navigation Drawer and having some issues with menuItem.setChecked(true); when using groups and headers within the menu. It's not highlighting menu items as expected.
Here is my XML:
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
tools:context=".ActivityMap">
<group android:checkableBehavior="single">
<item
android:id="#+id/nav_welcome"
android:icon="#drawable/abc_btn_check_to_on_mtrl_000"
android:title="Welcome" />
<item
android:id="#+id/nav_map_showmap"
android:icon="#mipmap/ic_map_black_24dp"
android:title="Show Map" />
<item
android:icon="#mipmap/ic_list_black_24dp"
android:title="Show List" />
<item android:title="Settings">
<menu>
<item
android:id="#+id/nav_database_check"
android:icon="#mipmap/ic_cloud_done_black_24dp"
android:title="Update Database" />
<item
android:id="#+id/nav_map_settings"
android:icon="#mipmap/ic_settings_black_24dp"
android:title="App Preferences" />
</menu>
</item>
<item android:title="General">
<menu>
<item
android:id="#+id/nav_general_about"
android:icon="#mipmap/ic_info_black_24dp"
android:title="About" />
<item
android:id="#+id/nav_general_help"
android:icon="#mipmap/ic_help_black_24dp"
android:title="Help" />
<item
android:id="#+id/nav_general_report"
android:icon="#mipmap/ic_email_black_24dp"
android:title="Feedback / Report error" />
</menu>
</item>
</group>
</menu>
As you can see I have 3 menu items, then a Settings Group with 2 menu items, then a General Group with 3 menu items.
Now with the first 3 menu items, the menuItem.setChecked(true); is working as expected, and highlighting that menu item. However, none of the following menu items within the subset ("Settings" or "General" subsets) are highlighting correctly.
I read that the <group android:checkableBehaviour="single"> can encapsulate the whole block, but that doesn't seem to be working.
Any thoughts? Cheers.
EDIT - Added Screenshot of the menu structure

UPDATE
If you have upgraded your Android Studio to 1.4, you can create a new project (with Navigation Drawer Activity template). Then, you can update your menu file as the following (pay attention to the two lines <group android:checkableBehavior="single"> inside 2 sub-menus at "Communicate" and "BNK"):
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
<group android:checkableBehavior="single">
<item android:id="#+id/nav_camara" android:icon="#android:drawable/ic_menu_camera"
android:title="Import" />
<item android:id="#+id/nav_gallery" android:icon="#android:drawable/ic_menu_gallery"
android:title="Gallery" />
<item android:id="#+id/nav_slideshow" android:icon="#android:drawable/ic_menu_slideshow"
android:title="Slideshow" />
<item android:id="#+id/nav_manage" android:icon="#android:drawable/ic_menu_manage"
android:title="Tools" />
</group>
<item android:title="Communicate">
<menu>
<group android:checkableBehavior="single">
<item android:id="#+id/nav_share" android:icon="#android:drawable/ic_menu_share"
android:title="Share" />
<item android:id="#+id/nav_send" android:icon="#android:drawable/ic_menu_send"
android:title="Send" />
</group>
</menu>
</item>
<item android:title="BNK">
<menu>
<group android:checkableBehavior="single">
<item android:id="#+id/nav_share_bnk" android:icon="#android:drawable/ic_menu_share"
android:title="Share BNK" />
<item android:id="#+id/nav_send_bnk" android:icon="#android:drawable/ic_menu_send"
android:title="Send BNK" />
</group>
</menu>
</item>
</menu>
And here is the screenshot
END OF UPDATE
As I have commented, please try putting <group android:checkableBehavior="single"> below menus of Settings and General instead of putting below the outside menu. That means you will have 2 groups. Hope this helps!

<group android:checkableBehavior="single">
<item
android:id="#+id/nav_vi_tri"
android:icon="#drawable/ic_menu_camera"
android:title="Vị trí" />
<item
android:id="#+id/nav_xem_lai"
android:icon="#drawable/ic_menu_gallery"
android:title="Xem lại hành trình" />
<item
android:id="#+id/nav_hinh_anh"
android:icon="#drawable/ic_menu_slideshow"
android:title="Hình ảnh" />
<item android:title="Báo cáo">
<menu>
<group android:checkableBehavior="single">
<item
android:id="#+id/nav_baocao1"
android:icon="#drawable/ic_menu_camera"
android:title="Hành trình xe chạy" />
<item
android:id="#+id/nav_baocao2"
android:icon="#drawable/ic_menu_gallery"
android:title="Tốc độ của xe" />
<item
android:id="#+id/nav_baocao3"
android:icon="#drawable/ic_menu_slideshow"
android:title="Quá tốc độ" />
<item
android:id="#+id/nav_baocao4"
android:icon="#drawable/ic_menu_slideshow"
android:title="Thời gian lái" />
<item
android:id="#+id/nav_baocao5"
android:icon="#drawable/ic_menu_slideshow"
android:title="Dừng đỗ" />
<item
android:id="#+id/nav_baocao6"
android:icon="#drawable/ic_menu_slideshow"
android:title="Tổng hợp theo xe" />
<item
android:id="#+id/nav_baocao7"
android:icon="#drawable/ic_menu_slideshow"
android:title="Quãng đường nhiên liệu" />
</group>
</menu>
</item>
<item android:title="Communicate">
<menu>
<group android:checkableBehavior="single">
<item
android:id="#+id/nav_tien_ich"
android:icon="#drawable/ic_menu_share"
android:title="Tiện ích" />
<item
android:id="#+id/nav_logout"
android:icon="#drawable/ic_menu_send"
android:title="Đăng xuất" />
</group>
</menu>
</item>
</group>
it work for me :D

Here you can use three different groups top , center and bottom. And first top group will have 3 menu items as you have . Then the center group can be same as your "Settings" menu with 2 items. And bottom group will have 2 items as it is in General.
And in your java file you can handle Item Selected Listener to handle the item click of the navigation menu.
// This method will trigger on item Click of navigation menu
#Override
public boolean onNavigationItemSelected(MenuItem p_menuItem) {
//Checking if the item is in checked state or not, if not make it in checked state
if(p_menuItem.getGroupId()==R.id.menu_top){
m_navigationView.getMenu().setGroupCheckable(R.id.menu_bottom,false,true);
m_navigationView.getMenu().setGroupCheckable(R.id.menu_center,false,true);
m_navigationView.getMenu().setGroupCheckable(R.id.menu_top,true,true);
}
else if(p_menuItem.getGroupId()==R.id.menu_center){
m_navigationView.getMenu().setGroupCheckable(R.id.menu_bottom,false,true);
m_navigationView.getMenu().setGroupCheckable(R.id.menu_center,true,true);
m_navigationView.getMenu().setGroupCheckable(R.id.menu_top,false,true);
}
else{
m_navigationView.getMenu().setGroupCheckable(R.id.menu_bottom,true,true);
m_navigationView.getMenu().setGroupCheckable(R.id.menu_center,false,true);
m_navigationView.getMenu().setGroupCheckable(R.id.menu_top,false,true);
}
p_menuItem.setChecked(true);
m_drawerLayout.closeDrawers();

Try this:
private int selectedItem = 0;
private void setSelectedItem(MenuItem menuItem, int position) {
mNavigationView.getMenu().getItem(selectedItem).setChecked(false);
mNavigationView.getMenu().getItem(position).setChecked(true);
if (menuItem.getGroupId() == R.id.group_2) {
mNavigationView.getMenu().setGroupCheckable(R.id.group_1, false, true);
mNavigationView.getMenu().setGroupCheckable(R.id.group_2, true, true);
} else {
mNavigationView.getMenu().setGroupCheckable(R.id.group_1, true, true);
mNavigationView.getMenu().setGroupCheckable(R.id.group_2, false, true);
}
//Update highlighted item in the navigation menu
menuItem.setChecked(true);
selectedItem = position;
}

Change the position on closing group tag </group> in your code as under:
Look the position carefully and do it.
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
tools:context=".ActivityMap">
<group android:checkableBehavior="single">
<item
android:id="#+id/nav_welcome"
android:icon="#drawable/abc_btn_check_to_on_mtrl_000"
android:title="Welcome" />
<item
android:id="#+id/nav_map_showmap"
android:icon="#mipmap/ic_map_black_24dp"
android:title="Show Map" />
<item
android:icon="#mipmap/ic_list_black_24dp"
android:title="Show List" />
</group>
<item android:title="Settings">
<menu>
<item
android:id="#+id/nav_database_check"
android:icon="#mipmap/ic_cloud_done_black_24dp"
android:title="Update Database" />
<item
android:id="#+id/nav_map_settings"
android:icon="#mipmap/ic_settings_black_24dp"
android:title="App Preferences" />
</menu>
</item>
<item android:title="General">
<menu>
<item
android:id="#+id/nav_general_about"
android:icon="#mipmap/ic_info_black_24dp"
android:title="About" />
<item
android:id="#+id/nav_general_help"
android:icon="#mipmap/ic_help_black_24dp"
android:title="Help" />
<item
android:id="#+id/nav_general_report"
android:icon="#mipmap/ic_email_black_24dp"
android:title="Feedback / Report error" />
</menu>
</item>
</menu>