blocks|key|804832|text|对于需要动态更改菜单选项的任何人：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|804833|private+Menu+menu;

//+...

@Override
public+boolean+onCreateOptionsMenu(Menu+menu)
{
++++this.menu+=+menu;
++++getMenuInflater().inflate(R.menu.options,+menu);
++++return+true;
}

//+...

private+void+hideOption(int+id)
{
++++MenuItem+item+=+menu.findItem(id);
++++item.setVisible(false);
}

private+void+showOption(int+id)
{
++++MenuItem+item+=+menu.findItem(id);
++++item.setVisible(true);
}

private+void+setOptionTitle(int+id,+String+title)
{
++++MenuItem+item+=+menu.findItem(id);
++++item.setTitle(title);
}

private+void+setOptionIcon(int+id,+int+iconRes)
{
++++MenuItem+item+=+menu.findItem(id);
++++item.setIcon(iconRes);
}|code-block|syntax|javascript|804834|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

For anyone needs to change the options of the menu dynamically:

<pre><code>private Menu menu;

// ...

@Override
public boolean onCreateOptionsMenu(Menu menu)
{
 this.menu = menu;
 getMenuInflater().inflate(R.menu.options, menu);
 return true;
}

// ...

private void hideOption(int id)
{
 MenuItem item = menu.findItem(id);
 item.setVisible(false);
}

private void showOption(int id)
{
 MenuItem item = menu.findItem(id);
 item.setVisible(true);
}

private void setOptionTitle(int id, String title)
{
 MenuItem item = menu.findItem(id);
 item.setTitle(title);
}

private void setOptionIcon(int id, int iconRes)
{
 MenuItem item = menu.findItem(id);
 item.setIcon(iconRes);
}
</code></pre>

blocks|key|804746|text|menu.xml|type|unstyled|depth|inlineStyleRanges|entityRanges|data|804747|++<item+
++++android:id="@%2Bid/item1"
++++android:title="your+Item">
++</item>|code-block|syntax|javascript|804748|放入java文件中。|804749|++public+void+onPrepareOptionsMenu(Menu+menu)+{

++++menu.removeItem(R.id.item1);
}|804750|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

menu.xml

<pre><code> &lt;item 
 android:id="@+id/item1"
 android:title="your Item"&gt;
 &lt;/item&gt;
</code></pre>

put in your java file

<pre><code> public void onPrepareOptionsMenu(Menu menu) {

 menu.removeItem(R.id.item1);
}
</code></pre>

blocks|key|804876|text|就像Nikolay说的那样，在onPrepareOptionsMenu()中这样做。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|804877|对于操作栏中的菜单项，必须使用activity.invalidateOptionsMenu();使菜单无效|offset|length|style|CODE|804878|这里对此进行了更详细的描述How+can+I+refresh+the+ActionBar+when+onPrepareOptionsMenu+switched+menu+entries?|804879|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/questions/7765184^0|0|F|X|0|D|28|0|0^^$0|@$1|2|3|4|5|6|7|R|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|S|8|@$D|T|E|U|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|V|8|@]|9|@$D|W|E|X|1|Y]]|A|$]]|$1|J|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|K|$L|$5|M|N|O|A|$P|Q]]]]

Like Nikolay said do that in onPrepareOptionsMenu().

For menu items in the action bar you have to invalidate the menu with
<code>activity.invalidateOptionsMenu();</code>

This is descriped in more detail here <a href="https://stackoverflow.com/questions/7765184">How can I refresh the ActionBar when onPrepareOptionsMenu switched menu entries?</a>

blocks|key|588998|text|如果我必须更改选项菜单的内容，我会在onMenuOpened()期间执行它。这允许我在用户访问菜单的时刻检查运行状态。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|588999|public+boolean+onMenuOpened(int+featureid,+Menu+menu)
++++{
++++++++menu.clear();
++++++++if+(!editable)
++++++++{
++++++++++++MenuItem+itemAdd+=+menu.add(0,+REASSIGN,+Menu.NONE,+context.getString(R.string.reassign));
++++++++++++MenuItem+itemMod+=+menu.add(1,+EDIT,+Menu.NONE,+context.getString(R.string.modify));
++++++++++++MenuItem+itemDel+=+menu.add(2,+DELETE,+Menu.NONE,+context.getString(R.string.delete));
++++++++++++itemAdd.setShortcut('0',+'a');
++++++++++++itemMod.setShortcut('1',+'m');
++++++++++++itemDel.setShortcut('2',+'d');
++++++++}
++++++++else
++++++++{
++++++++++++MenuItem+itemSave+=+menu.add(3,+SAVE,+Menu.NONE,+context.getString(R.string.savechanges));
++++++++++++itemSave.setShortcut('0',+'S');
++++++++}


++++++++return+true;
++++}|code-block|syntax|javascript|589000|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

If I have to change the contents of my options menu I perform it during the onMenuOpened(). This allows me to check the running state at the very moment that the user is accessing the menu.

<pre><code>public boolean onMenuOpened(int featureid, Menu menu)
 {
 menu.clear();
 if (!editable)
 {
 MenuItem itemAdd = menu.add(0, REASSIGN, Menu.NONE, context.getString(R.string.reassign));
 MenuItem itemMod = menu.add(1, EDIT, Menu.NONE, context.getString(R.string.modify));
 MenuItem itemDel = menu.add(2, DELETE, Menu.NONE, context.getString(R.string.delete));
 itemAdd.setShortcut('0', 'a');
 itemMod.setShortcut('1', 'm');
 itemDel.setShortcut('2', 'd');
 }
 else
 {
 MenuItem itemSave = menu.add(3, SAVE, Menu.NONE, context.getString(R.string.savechanges));
 itemSave.setShortcut('0', 'S');
 }


 return true;
 }
</code></pre>

blocks|key|804898|text|要禁用某些项目，请执行以下操作：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|804899|MenuItem+item+=+menu.findItem(R.id.ID_ASSING_TO_THE_ITEM_IN_MENU_XML);
item.setEnabled(false);|code-block|syntax|javascript|804900|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

To disable certain items:

<pre><code>MenuItem item = menu.findItem(R.id.ID_ASSING_TO_THE_ITEM_IN_MENU_XML);
item.setEnabled(false);
</code></pre>

blocks|key|589259|text|使用下面的代码行添加菜单中的值|type|unstyled|depth|inlineStyleRanges|entityRanges|data|589260|getActivity().invalidateOptionsMenu();|code-block|syntax|javascript|589261|对我来说，试一试这项工作吧。|589262|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

using the following lines i have done to add the values in menu 

<pre><code>getActivity().invalidateOptionsMenu();
</code></pre>

try this work like a charm to me.

blocks|key|804957|text|尝试以下代码：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|804958|@Override
public+boolean+onPrepareOptionsMenu(Menu+menu)+{
++++this.menu=menu;
++++updateMenuItems(menu);
++++return+super.onPrepareOptionsMenu(menu);
}

@Override
public+boolean+onCreateOptionsMenu(Menu+menu)+{
++++MenuInflater+inflater+=+getMenuInflater();
++++inflater.inflate(R.menu.document_list_activity_actions,+menu);
++++return+super.onCreateOptionsMenu(menu);
}


@Override
public+boolean+onOptionsItemSelected(MenuItem+item)+{
++++//+Handle+presses+on+the+action+bar+items
++++if+(item.getItemId()+==+android.R.id.home)+{
++++++++onHomeButtonPresssed();
++++}else+if+(item.getItemId()+==+R.id.action_delete)+{
++++++++useCheckBoxAdapter=false;
++++++++deleteDocuments();
++++}+else+if+(item.getItemId()+==+R.id.share)+{
++++++++useCheckBoxAdapter=false;
++++++++shareDocuments();
++++}+else+if+(item.getItemId()+==+R.id.action_tick)+{
++++++++useCheckBoxAdapter=true;
++++++++onShowCheckboxes();
++++}
++++updateMenuItems(menu);
++++return+true;
}

private+void+updateMenuItems(Menu+menu){
++++if+(useCheckBoxAdapter+&&+menu+!=+null)+{
++++++++menu.findItem(R.id.action_delete).setVisible(true);
++++++++menu.findItem(R.id.share).setVisible(true);
++++++++menu.findItem(R.id.action_tick).setVisible(false);
++++}+else+{
++++++++menu.findItem(R.id.action_delete).setVisible(false);
++++++++menu.findItem(R.id.share).setVisible(false);
++++++++menu.findItem(R.id.action_tick).setVisible(true);
++++}
++++invalidateOptionsMenu();
}|code-block|syntax|javascript|804959|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Try this code:

<pre><code>@Override
public boolean onPrepareOptionsMenu(Menu menu) {
 this.menu=menu;
 updateMenuItems(menu);
 return super.onPrepareOptionsMenu(menu);
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
 MenuInflater inflater = getMenuInflater();
 inflater.inflate(R.menu.document_list_activity_actions, menu);
 return super.onCreateOptionsMenu(menu);
}


@Override
public boolean onOptionsItemSelected(MenuItem item) {
 // Handle presses on the action bar items
 if (item.getItemId() == android.R.id.home) {
 onHomeButtonPresssed();
 }else if (item.getItemId() == R.id.action_delete) {
 useCheckBoxAdapter=false;
 deleteDocuments();
 } else if (item.getItemId() == R.id.share) {
 useCheckBoxAdapter=false;
 shareDocuments();
 } else if (item.getItemId() == R.id.action_tick) {
 useCheckBoxAdapter=true;
 onShowCheckboxes();
 }
 updateMenuItems(menu);
 return true;
}

private void updateMenuItems(Menu menu){
 if (useCheckBoxAdapter &amp;&amp; menu != null) {
 menu.findItem(R.id.action_delete).setVisible(true);
 menu.findItem(R.id.share).setVisible(true);
 menu.findItem(R.id.action_tick).setVisible(false);
 } else {
 menu.findItem(R.id.action_delete).setVisible(false);
 menu.findItem(R.id.share).setVisible(false);
 menu.findItem(R.id.action_tick).setVisible(true);
 }
 invalidateOptionsMenu();
}
</code></pre>

blocks|key|589172|text|你可以像我一样做一些简单的事情。只需将文本更改为触摸菜单项时所需的内容。我需要关闭和打开声音，以及通过触摸来执行动作的能力。下面是我的代码：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|589173|++++@Override
public+boolean+onOptionsItemSelected(MenuItem+item)+{

++++switch+(item.getItemId())+{
++++case+R.id.audioOn:
++++++++audioOn+=+!audioOn;
++++++++if+(audioOn)
++++++++++++item.setTitle("Audio+Off");
++++++++else
++++++++++++item.setTitle("Audio+On");
++++++++return+true;

++++case+R.id.touchOn:
++++++++touchOn+=+!touchOn;
++++++++if+(touchOn)
++++++++++++item.setTitle("Touch+Off");
++++++++else
++++++++++++item.setTitle("Touch+On");
++++++++return+true;
++++default:
++++++++return+super.onOptionsItemSelected(item);
++++}
}|code-block|syntax|javascript|589174|audioOn和touchOn是在代码的其他部分中检查的布尔值。希望这能有所帮助。|589175|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

You can do something simple like I did. Just change the text to what is needed when the menu item is touched. I needed to turn the sound off and on, plus the ability to perform an action by touching it. Here is my code:

<pre><code> @Override
public boolean onOptionsItemSelected(MenuItem item) {

 switch (item.getItemId()) {
 case R.id.audioOn:
 audioOn = !audioOn;
 if (audioOn)
 item.setTitle("Audio Off");
 else
 item.setTitle("Audio On");
 return true;

 case R.id.touchOn:
 touchOn = !touchOn;
 if (touchOn)
 item.setTitle("Touch Off");
 else
 item.setTitle("Touch On");
 return true;
 default:
 return super.onOptionsItemSelected(item);
 }
}
</code></pre>

audioOn and touchOn are booleans checked in other parts of the code. Hope this helps.

blocks|key|589316|text|@Override
++++public+boolean+onCreateOptionsMenu(Menu+menu)+{
++++++++MenuInflater+inflater+=+getMenuInflater();
++++++++inflater.inflate(R.menu.calendar,+menu);
++++++++if(show_list+==+true)+{+++++++++

++++++++if(!locale.equalsIgnoreCase("sk"))+menu.findItem(R.id.action_cyclesn).setVisible(false);

++++++++return+true;
++++}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|589317|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>@Override
 public boolean onCreateOptionsMenu(Menu menu) {
 MenuInflater inflater = getMenuInflater();
 inflater.inflate(R.menu.calendar, menu);
 if(show_list == true) { 

 if(!locale.equalsIgnoreCase("sk")) menu.findItem(R.id.action_cyclesn).setVisible(false);

 return true;
 }
</code></pre>

blocks|key|589231|text|您只需按如下方式实现即可完成任务：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|589232|private+Menu+menu;

+@Override
+public+boolean+onCreateOptionsMenu(Menu+menu)+{
++++getMenuInflater().inflate(R.menu.drive_menu,+menu);
++++return+true;
}

@Override
public+boolean+onPrepareOptionsMenu(Menu+menu)+{
++++this.menu+=+menu;
++++return+super.onPrepareOptionsMenu(menu);
}

@Override
public+boolean+onOptionsItemSelected(MenuItem+item)+{
++++int+id+=+item.getItemId();

++++if+(id+==+R.id.action_toggle_grid)+{
++++++++handleMenuOption(id);
++++++++return+true;

++++}+else+if(id+==+R.id.action_toggle_list){
++++++++handleMenuOption(id);
++++++++return+true;
++++}

++++return+super.onOptionsItemSelected(item);
}

private+void+handleMenuOption(int+id)+{
++++MenuItem+item+=+menu.findItem(id);
++++if+(id+==+R.id.action_toggle_grid){
++++++++item.setVisible(false);
++++++++menu.findItem(R.id.action_toggle_list).setVisible(true);
++++}else+if+(id+==+R.id.action_toggle_list){
++++++++item.setVisible(false);
++++++++menu.findItem(R.id.action_toggle_grid).setVisible(true);
++++}
}|code-block|syntax|javascript|589233|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

you can accomplish your task simply by implementing as below:

<pre><code>private Menu menu;

 @Override
 public boolean onCreateOptionsMenu(Menu menu) {
 getMenuInflater().inflate(R.menu.drive_menu, menu);
 return true;
}

@Override
public boolean onPrepareOptionsMenu(Menu menu) {
 this.menu = menu;
 return super.onPrepareOptionsMenu(menu);
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
 int id = item.getItemId();

 if (id == R.id.action_toggle_grid) {
 handleMenuOption(id);
 return true;

 } else if(id == R.id.action_toggle_list){
 handleMenuOption(id);
 return true;
 }

 return super.onOptionsItemSelected(item);
}

private void handleMenuOption(int id) {
 MenuItem item = menu.findItem(id);
 if (id == R.id.action_toggle_grid){
 item.setVisible(false);
 menu.findItem(R.id.action_toggle_list).setVisible(true);
 }else if (id == R.id.action_toggle_list){
 item.setVisible(false);
 menu.findItem(R.id.action_toggle_grid).setVisible(true);
 }
}
</code></pre>

blocks|key|805087|text|用于以编程方式访问工具栏OptionsMenu项的Kotlin代码&更改文本/图标，..：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|805088|1-我们在菜单项文件中有我们的菜单项，如:+menu.xml，示例代码如下：|805089|+<?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="@%2Bid/balance"
++++++android:title="0"
++++++android:orderInCategory="100"
++++++app:showAsAction="always"+/>
+</menu>|code-block|syntax|javascript|805090|2-定义用于访问类中菜单对象的变量：|805091|var+menu:+Menu?+=+null|805092|3-+onCreateOptionsMenu中的首字母：|805093|override+fun+onCreateOptionsMenu(menu:+Menu):+Boolean+{
++++//+Inflate+the+menu;+this+adds+items+to+the+action+bar+if+it+is+present.
++++menuInflater.inflate(R.menu.main,+menu)
++++this.menu+=+menu
++++return+true
}|805094|4-访问代码中的菜单项或乐趣：|805095|private+fun+initialBalanceMenuItemOnToolbar()+{
var+menuItemBalance+=+menu?.findItem(R.id.balance)
++++menuItemBalance?.title+=+Balance?.toString()+?:+0.toString()
++++//+for+change+icon+:+menuWalletBalance?.icon
}|805096|entityMap^0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|X|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|Y|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|Z|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|10|8|@]|9|@]|A|$G|H]]|$1|M|3|N|5|6|7|11|8|@]|9|@]|A|$]]|$1|O|3|P|5|F|7|12|8|@]|9|@]|A|$G|H]]|$1|Q|3|R|5|6|7|13|8|@]|9|@]|A|$]]|$1|S|3|T|5|F|7|14|8|@]|9|@]|A|$G|H]]|$1|U|3|-4|5|6|7|15|8|@]|9|@]|A|$]]]|V|$]]

Kotlin Code for accessing toolbar OptionsMenu items programmatically &amp; change the text/icon ,..:

1-We have our menu item in menu items file like: menu.xml, sample code for this:

<pre><code> &lt;?xml version="1.0" encoding="utf-8"?&gt; 
 &lt;menu xmlns:android="http://schemas.android.com/apk/res/android"
 xmlns:app="http://schemas.android.com/apk/res-auto"&gt;
&lt;item android:id="@+id/balance"
 android:title="0"
 android:orderInCategory="100"
 app:showAsAction="always" /&gt;
 &lt;/menu&gt;
</code></pre>

2- Define a variable for accessing menu object in class :

<pre><code>var menu: Menu? = null
</code></pre>

3- initial it in onCreateOptionsMenu :

<pre><code>override fun onCreateOptionsMenu(menu: Menu): Boolean {
 // Inflate the menu; this adds items to the action bar if it is present.
 menuInflater.inflate(R.menu.main, menu)
 this.menu = menu
 return true
}
</code></pre>

4- Access the menu items inside your code or fun :

<pre><code>private fun initialBalanceMenuItemOnToolbar() {
var menuItemBalance = menu?.findItem(R.id.balance)
 menuItemBalance?.title = Balance?.toString() ?: 0.toString()
 // for change icon : menuWalletBalance?.icon
}
</code></pre>

Is it possible to change the option menu items programmatically? Can anyone provide me with an example please?

Also, I want to disable certain items, so that they don't listen to the clicks, is it possible?

android: changing option menu items programmatically

Kotlin

是否可以通过编程方式更改选项菜单项？有人能给我举个例子吗？另外，我想禁用某些项目，这样他们就不会听到点击的声音，这是可能的吗？

问android:以编程方式更改选项菜单项
EN

回答 11

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问android:以编程方式更改选项菜单项EN

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问android:以编程方式更改选项菜单项
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