I have used a technique (http://united-coders.com/nico-heid/use-android-activitygroup-within-tabhost-to-show-different-activity)
to develop an app where I have 3 tabs and each tab has its own ActivityGroup. I have menus for each activity. But when I press menu button, the menu does not appear. After doing some random trails I found that If I implement onCreateOptionsMenu in ActivityGroup then only menu appears. I am not able to execute onCreateOptionsMenu of Activity.
Please suggest how to use menu of Activity as I have many activities in single ActivityGroup and by implementing onCreateOptionsMenu in ActivityGroup is not the right way to handle this problem.
Here is how you roll with it:
In your ActivityGroup class onCreateOptionMenu() call the current Activity 's onCreateOptionMenu() i.e
public boolean onPrepareOptionsMenu(Menu menu)
{
Activity activity = getLocalActivityManager().getCurrentActivity();
return activity.onPrepareOptionsMenu(menu);
}
#Override
public boolean onPrepareOptionsMenu(Menu menu)
{
Activity activity = getLocalActivityManager().getCurrentActivity();
return activity.onPrepareOptionsMenu(menu);
}
#Override
public boolean onOptionsItemSelected (MenuItem item)
{
Activity activity = getLocalActivityManager().getCurrentActivity();
return activity.onOptionsItemSelected(item);
}
and in your individual Activity
#Override
public boolean onCreateOptionsMenu(Menu menu)
{
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.menu, menu);
return true;
}
#Override
public boolean onPrepareOptionsMenu(Menu menu)
{
return true;
}
#Override
public boolean onOptionsItemSelected (MenuItem item)
{
switch (item.getItemId())
{
case R.id.MENU_LOGOUT:
Dialog.showToast(this, "message");
return true;
case R.id.MENU_HELP:
break;
case R.id.MENU_ABOUT:
break;
}
return super.onOptionsItemSelected(item);
}
and if you want any Activity without having any Menu just override these methods
#Override
public boolean onCreateOptionsMenu(Menu menu)
{
return true;
}
#Override
public boolean onPrepareOptionsMenu(Menu menu)
{
return true;
}
Related
So, that´s what I wanna know. How can I set the visibility of the menu programatically in Android?? This is how I have my menu:
public boolean onCreateOptionsMenu(Menu menu){
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.menu, menu);
return true;
}
public boolean onOptionsItemSelected (MenuItem item){
switch (item.getItemId()){
case R.id.menuregistrar:
break;
case R.id.menusalir:
break;
}
return true;
}
But this code is not on the onCreate, so I don´t know how to set one item visible or invisible programmatically (in my case, I want the "menuregistrar" to be invisible once I have registered my application and forever.
Put this method in your Activity
public boolean onPrepareOptionsMenu(Menu menu)
{
MenuItem register = menu.findItem(R.id.menuregistrar);
if(userRegistered)
{
register.setVisible(false);
}
else
{
register.setVisible(true);
}
return true;
}
in shorter version you could write:
MenuItem register = menu.findItem(R.id.menuregistrar);
register.setVisible(!userRegistered); //userRegistered is boolean, pointing if the user has registered or not.
return true;
I would simplify Adil's solution even further with the following:
public boolean onPrepareOptionsMenu(Menu menu)
{
MenuItem registrar = menu.findItem(R.id.menuregistrar);
registrar.setVisible(!isRegistered);
return true;
}
Simply do one thing get the id of the item of menu from this line:
Menu menu =navigationView.getMenu();
MenuItem nav_dashboard = menu.findItem(R.id.nav_dashboard);
and than make it visible it accourding to you by this line:
nav_dashboard.setVisible(true/false);
Menu Object has a property to set the visibility of a menu's item using setVisible(boolean)//
Example
private Menu menu_change_language;
...
...
#Override
public boolean onCreateOptionsMenu(Menu menu) {
...
...
menu_change_language = menu;
...
...
return super.onCreateOptionsMenu(menu);
}
use code below for hiding Menu Item:
if(menu_change_language != null){
menu_change_language.findItem(R.id.menu_change_language)
.setVisible(false);
}
Use public boolean onPrepareOptionsMenu (Menu menu) it is called everytime you press the menu button and do your stuff there. or use your oncreateoptionsmenu() in different activities to inflate different menus - this one is called only once.
Cheers
If you want to change the visibility inside the onOptionsItemSelected whenever you click the menu
#Override
public boolean onOptionsItemSelected(MenuItem item) {
item.setVisible(true);
return true;
}
OR
for item in the menu that you didn't click on
private Menu globalMenuItem;
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu."menu Xml Name", menu);
globalMenuItem = menu;
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
globalMenuItem.findItem(R.id."id of the menu item").setVisible(true);
return true;
}
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
In my app i have an optionsmenu. It has 2 buttons. Depending on a boolean value i would like to show/hide one of the buttons. I've got the following code but it doesn't hide the button. How can i do this?
#Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.layout.menushowmoredetails, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
if(displayRotaDetails.equalsIgnoreCase("false")){
if(item.getItemId() == R.id.moredetails)
item.setVisible(false);
}
switch (item.getItemId()) {
case R.id.back:
onBackPressed();
return true;
case R.id.moredetails:
You have to use the onPrepareOptionMenu method like this:
#Override
public boolean onPrepareOptionsMenu(Menu menu) {
super.onPrepareOptionsMenu(menu);
// add your conditions here and change 0 with the R.id.moredetails item postion.
if(displayRotaDetails.equalsIgnoreCase("false")){
menu.getItem(1).setVisible(false);
}
}
So, that´s what I wanna know. How can I set the visibility of the menu programatically in Android?? This is how I have my menu:
public boolean onCreateOptionsMenu(Menu menu){
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.menu, menu);
return true;
}
public boolean onOptionsItemSelected (MenuItem item){
switch (item.getItemId()){
case R.id.menuregistrar:
break;
case R.id.menusalir:
break;
}
return true;
}
But this code is not on the onCreate, so I don´t know how to set one item visible or invisible programmatically (in my case, I want the "menuregistrar" to be invisible once I have registered my application and forever.
Put this method in your Activity
public boolean onPrepareOptionsMenu(Menu menu)
{
MenuItem register = menu.findItem(R.id.menuregistrar);
if(userRegistered)
{
register.setVisible(false);
}
else
{
register.setVisible(true);
}
return true;
}
in shorter version you could write:
MenuItem register = menu.findItem(R.id.menuregistrar);
register.setVisible(!userRegistered); //userRegistered is boolean, pointing if the user has registered or not.
return true;
I would simplify Adil's solution even further with the following:
public boolean onPrepareOptionsMenu(Menu menu)
{
MenuItem registrar = menu.findItem(R.id.menuregistrar);
registrar.setVisible(!isRegistered);
return true;
}
Simply do one thing get the id of the item of menu from this line:
Menu menu =navigationView.getMenu();
MenuItem nav_dashboard = menu.findItem(R.id.nav_dashboard);
and than make it visible it accourding to you by this line:
nav_dashboard.setVisible(true/false);
Menu Object has a property to set the visibility of a menu's item using setVisible(boolean)//
Example
private Menu menu_change_language;
...
...
#Override
public boolean onCreateOptionsMenu(Menu menu) {
...
...
menu_change_language = menu;
...
...
return super.onCreateOptionsMenu(menu);
}
use code below for hiding Menu Item:
if(menu_change_language != null){
menu_change_language.findItem(R.id.menu_change_language)
.setVisible(false);
}
Use public boolean onPrepareOptionsMenu (Menu menu) it is called everytime you press the menu button and do your stuff there. or use your oncreateoptionsmenu() in different activities to inflate different menus - this one is called only once.
Cheers
If you want to change the visibility inside the onOptionsItemSelected whenever you click the menu
#Override
public boolean onOptionsItemSelected(MenuItem item) {
item.setVisible(true);
return true;
}
OR
for item in the menu that you didn't click on
private Menu globalMenuItem;
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu."menu Xml Name", menu);
globalMenuItem = menu;
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
globalMenuItem.findItem(R.id."id of the menu item").setVisible(true);
return true;
}
I created a file option_menu.xml: in the directory /res/menu/
I created a file menu.java that contains this code:
#Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.option_menu, menu);
return true;
}
where I can put this code for my menu works?(In menu.java?
#Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.nelp:
help();
return true;
case R.id.quit:
quit();
default:
return super.onOptionsItemSelected(item);
}
}
My application contains 4 java files
I Hope the menu to be accessible at any Activity.
Thank you in advance
If you want the same code to be run in several activities, you can create a base class that derives from Activity and then derive your own Activity classes from your new base class. This code would go in that class.
public class ActivityBase extends Activity {
#Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.option_menu, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.nelp:
help();
return true;
case R.id.quit:
quit();
default:
return super.onOptionsItemSelected(item);
}
}
}
Your activities derive from ActivityBase:
public class MyActivity extends ActivityBase { ...