Enable/Disable Options Menu button with .setEnabled()? - android

Im trying to do something like this:
#Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.menu, menu);
//multiListener = false;
menu.add(0,START_DELETE,0, "Delete selected..").setEnabled(multiListener);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle item selection
switch (item.getItemId()) {
case R.id.multiselect:
if(multiselect == 0) { multiselect = 1;
multiListener = true;
Log.d("DH", "index="+multiListener);
}
else if(multiselect == 1) { multiselect = 0; multiListener = false;
Log.d("DH", "index="+multiListener);
}
fillData();
return true;
case START_DELETE:
Toast.makeText(Notepadv3.this, "Pressed delete", Toast.LENGTH_SHORT).show();
return true;
default:
return super.onOptionsItemSelected(item);
}
}
Basically, if multiListener = true; make "Delete selected.." pressable otherwise gray it out...
This simple , thing.. doesn't want to work out with me,
for somehow... the button is always greyed out, although Log says that, it changes to true...
Anyone, know something?


You should call setEnabled() again to change item's state. Its state doesn't bind to a variable. This method should be called in onPrepareOptionsMenu().

Related

Handling Click Event for menu Used for Floating Action Button Options

I used a library recently that Provides a Floating Action Button and changing to a Something like Navigation bar by clicking on it.
but i cant set click Event for my navigation bar Items.
after Pressing on items i don't see any reaction!
Anyone can help me?
fabOptions = (FabOptions) findViewById(R.id.fabcontainer);
fabOptions.setButtonsMenu(R.menu.menu1);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.menu1, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.back:
newBack();
return true;
default:
return super.onOptionsItemSelected(item);
}
}
private void newBack() {
Toast.makeText(this, "back", Toast.LENGTH_SHORT).show();
}
}

First of all you should have to use break whenever you use switch statement otherwise the program will go to default status. so use break; the code below.
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getId(); // Retrieve the id of the selected menu item
switch(id) {
case R.id.back:
newBack();
return true;
break;
case ...
}
return super.onOptionsItemSelected(item);
}

onOptionsSelected is not working

I am trying to hide the menu in the TableLayout with ViewPager I want the menu only in the solutions tab. I used the onPrepareOptionsmenu to hide the menu in tabs except the solutions tab. the thing is my onOptionsItemSelected is not working.
code:
#Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inf = getMenuInflater();
inf.inflate(R.menu.simpleadd,menu);
// +getMenuInflater().inflate(R.menu.simpleadd, menu);
onPrepareOptionsMenu(menu);
return super.onCreateOptionsMenu(menu);
}
#Override
public boolean onPrepareOptionsMenu(Menu menu) {
if (viewpager.getCurrentItem()==0){
menu.findItem(R.id.simpleadd).setVisible(false);
} else if(viewpager.getCurrentItem()==1){
menu.findItem(R.id.simpleadd).setVisible(false);
} else if(viewpager.getCurrentItem()==2){
menu.findItem(R.id.simpleadd).setVisible(true);
} else if(viewpager.getCurrentItem()==3){
menu.findItem(R.id.simpleadd).setVisible(false);
}else if(viewpager.getCurrentItem()==4){
menu.findItem(R.id.simpleadd).setVisible(false);
}
return super.onCreateOptionsMenu(menu);
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()){
case R.id.simpleadd:
startActivity(new Intent(this,NewSolution.class));
}
return super.onOptionsItemSelected(item);
}
thanks in advance,

You have used the layout's name in the switch case of onOptionsItemSelected.
Use menu item's id instead.

First, you need to get item id and then set compare with layout ids,
this helps you to set the functionality. Please find the below sample
code for your reference.
#Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
if (id == R.id.simpleadd) {
// execute your code here
}
return super.onOptionsItemSelected(item);
}

Hide or Show a Menu Item if Webview Class Activated?

I am trying to disable programmatically a menu item if WebView class is not activated.
I tried this code:
#Override
public boolean onPrepareOptionsMenu(Menu menu)
{
super.onPrepareOptionsMenu(menu);
MenuItem item = menu.findItem(R.id.itemRefresh);
if (WebViewFragment.viewContentWebView.isActivated()){
item.setVisible(true);
item.setEnabled(true);
} else
{
item.setVisible(true);
item.setEnabled(false);
}
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// TODO Auto-generated method stub
switch (item.getItemId()) {
case R.id.itemRefresh:
WebViewFragment.viewContentWebView.reload();
return true;
case R.id.itemAdd:
//oke im gonna write here
return true;
case R.id.itemHelp:
// ok ok i will
return true;
default:
return true;
}
}
In Eclipse I don't get any error msg but on real device App blocks itself.
I think I'm doing something wrong in IF-ELSE statement part.
Thank you.

Android, How to create option Menu

Here I tried to make option menu, but menu is not displaying on screen, so please guide me where am I doing mistake...
MenuTest.java
public class MenuTest extends Activity {
#Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater=getMenuInflater();
inflater.inflate(R.menu.more_tab_menu, menu);
return super.onCreateOptionsMenu(menu);
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
switch(item.getItemId())
{
case R.id.feeds:
break;
case R.id.friends:
break;
case R.id.about:
break;
}
return true;
}
}
And my XML file is more_tab_menu.xml
<?xml version="1.0" encoding="utf-8"?>
<menu
xmlns:android="http://schemas.android.com/apk/res/android">
<item
android:id="#+id/feeds"
android:title="Feeds"/>
<item
android:id="#+id/friends"
android:title="Friends"/>
<item
android:id="#+id/about"
android:title="About"/>
</menu>
Please guide me,

public class MenuTest extends Activity {
#Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.more_tab_menu, menu);
// return true so that the menu pop up is opened
return true;
}
}
and don't forget to press the menu button or icon on Emulator or device

please see :==
private int group1Id = 1;
int homeId = Menu.FIRST;
int profileId = Menu.FIRST +1;
int searchId = Menu.FIRST +2;
int dealsId = Menu.FIRST +3;
int helpId = Menu.FIRST +4;
int contactusId = Menu.FIRST +5;
#Override
public boolean onCreateOptionsMenu(Menu menu) {
menu.add(group1Id, homeId, homeId, "").setIcon(R.drawable.home_menu);
menu.add(group1Id, profileId, profileId, "").setIcon(R.drawable.profile_menu);
menu.add(group1Id, searchId, searchId, "").setIcon(R.drawable.search_menu);
menu.add(group1Id, dealsId, dealsId, "").setIcon(R.drawable.deals_menu);
menu.add(group1Id, helpId, helpId, "").setIcon(R.drawable.help_menu);
menu.add(group1Id, contactusId, contactusId, "").setIcon(R.drawable.contactus_menu);
return super.onCreateOptionsMenu(menu);
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case 1:
// write your code here
Toast msg = Toast.makeText(MainHomeScreen.this, "Menu 1", Toast.LENGTH_LONG);
msg.show();
return true;
case 2:
// write your code here
return true;
case 3:
// write your code here
return true;
case 4:
// write your code here
return true;
case 5:
// write your code here
return true;
case 6:
// write your code here
return true;
default:
return super.onOptionsItemSelected(item);
}
}

Change your onCreateOptionsMenu method to return true. To quote the docs:
You must return true for the menu to be displayed; if you return false it will not be shown.

#Override
public boolean onCreateOptionsMenu(Menu menu) {
new MenuInflater(this).inflate(R.menu.folderview_options, menu);
return (super.onCreateOptionsMenu(menu));
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
if (item.getItemId() == R.id.locationListRefreshLocations) {
Cursor temp = helper.getEmployee(active_employeeId);
String[] matches = new String[1];
if (temp.moveToFirst()) {
matches[0] = helper.getEmployerID(temp);
}
temp.close();
startRosterReceiveBackgroundTask(matches);
} else if (item.getItemId()==R.id.locationListPrefs) {
startActivity(new Intent(this, PreferencesUnlockScreen.class));
return true;
}
return super.onOptionsItemSelected(item);
}

you can create options menu like below:
Menu XML code:
<?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/Menu_AboutUs"
android:icon="#drawable/ic_about_us_over_black"
android:title="About US"/>
<item
android:id="#+id/Menu_LogOutMenu"
android:icon="#drawable/ic_arrow_forward_black"
android:title="Logout"/>
</menu>
How you can get the menu from MENU XML(Convert menu XML to java):
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.my_options_menu,menu);
return super.onCreateOptionsMenu(menu);
}
How to get Selected Item from Menu:
#Override
public boolean onOptionsItemSelected(#NonNull MenuItem item) {
switch (item.getItemId()){
case R.id.Menu_AboutUs:
//About US
break;
case R.id.Menu_LogOutMenu:
//Do Logout
break;
}
return super.onOptionsItemSelected(item);
}

import android.app.Activity;
import android.os.Bundle;
import android.view.*;
import android.widget.*;
public class AndroidWalkthroughApp2 extends Activity {
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// show menu when menu button is pressed
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.options_menu, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// display a message when a button was pressed
String message = "";
if (item.getItemId() == R.id.option1) {
message = "You selected option 1!";
}
else if (item.getItemId() == R.id.option2) {
message = "You selected option 2!";
}
else {
message = "Why would you select that!?";
}
// show message via toast
Toast toast = Toast.makeText(this, message, Toast.LENGTH_LONG);
toast.show();
return true;
}
}

Replace return super.onCreateOptionsMenu(menu); with return true; in your onCreateOptionsMenu method
This will help
And you should also have the onCreate method in your activity

The previous answers have covered the traditional menu used in android. Their is another option you can use if you are looking for an alternative
https://github.com/AnshulBansal/Android-Pulley-Menu
Pulley menu is an alternate to the traditional Menu which allows user to select any option for an activity intuitively. The menu is revealed by dragging the screen downwards and in that gesture user can also select any of the options.

Android UI programming is a little bit tricky. To enable the Options menu, in addition to the code you wrote, we also need to call setHasOptionsMenu(true) in your overriden method OnCreate().
Hope this will help you out.

IF your Device is running Android v.4.1.2 or before,
the menu is not displayed in the action-bar.
But it can be accessed through the Menu-(hardware)-Button.

Good Day
I was checked
And if You choose Empty Activity
You Don't have build in Menu functions
For Build in You must choose Basic Activity
In this way You Activity will run onCreateOptionsMenu
Or if You work in Empty Activity from start
Chenge in styles.xml the

How do I inflate an Android options menu and set an item to Enabled=false?

My XML menu definition sets the item R.id.menu_refresh's enabled state to false. When the app runs the menu item is greyed and disabled. Why is this code in the app not enabling the item?
public boolean onCreateOptionsMenu(Menu menu)
{
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.main, menu);
MenuItem refresh = menu.getItem(R.id.menu_refresh);
refresh.setEnabled(true);
return true;
}
What am I missing?

Try menu.findItem() instead of getItem(). getItem() takes an index from [0, size) while findItem() takes an id.

this is what I do in my activity for the menu handling ...
//Android Activity Lifecycle Method
// This is only called once, the first time the options menu is displayed.
#Override
public boolean onCreateOptionsMenu(Menu menu)
{
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.mainmenu, menu);
return true;
}
//Android Activity Lifecycle Method
// Called when a panel's menu is opened by the user.
#Override
public boolean onMenuOpened(int featureId, Menu menu)
{
MenuItem mnuLogOut = menu.findItem(R.id.main_menu_log_out_id);
MenuItem mnuLogIn = menu.findItem(R.id.main_menu_log_in_id);
MenuItem mnuOptions = menu.findItem(R.id.main_menu_options_id);
MenuItem mnuProfile = menu.findItem(R.id.main_menu_profile_id);
//set the menu options depending on login status
if (mBoolLoggedIn == true)
{
//show the log out option
mnuLogOut.setVisible(true);
mnuLogIn.setVisible(false);
//show the options selection
mnuOptions.setVisible(true);
//show the edit profile selection
mnuProfile.setVisible(true);
}
else
{
//show the log in option
mnuLogOut.setVisible(false);
mnuLogIn.setVisible(true);
//hide the options selection
mnuOptions.setVisible(false);
//hide the edit profile selection
mnuProfile.setVisible(false);
}
return true;
}
//Android Activity Lifecycle Method
// called whenever an item in your options menu is selected
#Override
public boolean onOptionsItemSelected(MenuItem item)
{
// Handle item selection
switch (item.getItemId())
{
case R.id.main_menu_log_in_id:
{
ShowLoginUI();
return true;
}
case R.id.main_menu_log_out_id:
{
ShowGoodbyeUI();
return true;
}
case R.id.main_menu_options_id:
{
ShowOptionsUI();
return true;
}
case R.id.main_menu_profile_id:
{
ShowProfileUI();
return true;
}
default:
return super.onOptionsItemSelected(item);
}
}
I like this approach because it makes the code nice and modular

Use menu.findItem() instead of getItem().
because findItem is used to find item by id.

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