Launch submenu only if a particular conditions is true - android

Is there a way when a Menu item is clicked and before going to submenu we have to check a condition, if it is valid we launch the submenu if not we cancel. Please Help me I'm stuck with it ...
Thanks


okkk.. getting proble you should try like this..
public class Practice_TestActicvity extends Activity {
SubMenu sub;
#Override
public boolean onCreateOptionsMenu(Menu menu) {
menu.add("this is first menu");
menu.add("this is second menu");
sub = menu.addSubMenu(0, 1, 0, "SubMenu");
// sub.add(0,11,0,"SubMenu 1");
return super.onCreateOptionsMenu(menu);
}
and
#Override
public boolean onMenuItemSelected(int featureId, MenuItem item) {
if (item.getTitle().toString().equals("SubMenu")) {
sub.clear();
//you have to put here condtion like
//if(this==this){
Toast.makeText(this, "this is cliked", Toast.LENGTH_LONG).show();
sub.add(0, 11, 0, "SubMenu 1");
//}
//else{//execute this code
//}
}
return super.onMenuItemSelected(featureId, item);
}
now let me know which type of condition you wan to check?


Yes Ofcourse:
You can add/override onOptionsItemSelected(MenuItem item) method to get the results. See the example below:
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle item selection
switch (item.getItemId()) {
case R.id.logout:
if(islogout){
//code if islogout is setted to true and procceed further for submenu
return true;
}else{
//code if islogout is setted to False and display Toast that could not procceed further.
return false;
}
default:
return super.onOptionsItemSelected(item);
}
}
I hope this helps.
Mark this answer Correct and with UpVote it it helps you!
Thanks
sHaH

Related

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);
}

How to differentiate MenuItems

I am creating a menu, but both of menu options were intent to same class so how to fix this? Sorry I am a starter developer, so, please give me solution of that problem.
public void btnclick(View v){
openOptionsMenu();
}
#Override
public boolean onCreateOptionsMenu(Menu menu){
menu.add(0, 1, 0, "What's in it");
menu.add(0, 2, 0,"send");
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
Intent intt=new Intent(this,Help.class);
startActivity(intt);
return true;
}

Since you are adding 2 menu items at the onCreateOptionsMenu: 1st with ItemId = 1 and 2nd with ItemId = 2, you can use getItemId() to distinguish between menu items, like so:
#Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()){
case 1:
//do stuff like:
Intent intt=new Intent(this,Help.class);
startActivity(intt);
break;
case 2:
//do another stuff, like launching another activity
break;
default:
break;
}
return true;
}

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.

Options Menu not displayed in android

I have written one application. I want to show the settings option on the login screen of an application. Now i have an activity LoginActivity as shown below
class LoginActivity extends BaseLoginActivity
{
showLoginDialog();
/* some code here*/
#Override
public boolean onCreateOptionsMenu(Menu menu) {
populateMenu(menu);
return super.onCreateOptionsMenu(menu);
}
protected void populateMenu(Menu menu) {
menu.add(Menu.NONE, SETTINGS, Menu.NONE, "Settings").setIcon(
android.R.drawable.ic_menu_manage);
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case SETTINGS:
startSettingActiviy();
return (true);
}
return (super.onOptionsItemSelected(item));
}
public void startSettingActiviy() {
Intent i = new Intent(this, SettingsActivity.class);
startActivity(i);
}
/* some code here*/
}
when i press on the menu option i cannot see the menu. I tried to debug the code, it is not even reaching the oncreateOptionsMenu function. Please let me know what is missing here.

try this
#Override
public boolean onCreateOptionsMenu(Menu menu) {
populateMenu(menu);
return true;
}
and this too
#Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case SETTINGS:
startSettingActiviy();
return (true);
}
return true;
}
hope this will help you:)

Try out this way:
#Override
public boolean onCreateOptionsMenu(Menu menu) {
super.onCreateOptionsMenu(menu);
populateMenu(menu);
return true;
}

Give it a try with onPrepareOptionsMenu(Menu menu) instead
Also,
Minimum SDK version could be the cause. If you reduce it to 13-, you should probably see the menu show up again. Good article on this subject: POST

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

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