问题
I know it's not possible using the native API. Is there a workaround to implement that kind of view?
回答1:
The previously posted answer is OK, generally speaking. But it basically removes the default behaviour of the Overflow menu. Things like how many icons can be displayed on different screen-sizes and then they dropped off into the overflow menu when they can't be displayed. By doing the above you remove a lot of important functionality.
A better method would be to tell the overflow menu to display the icons directly. You can do this by adding the following code to your Activity.
@Override
public boolean onMenuOpened(int featureId, Menu menu)
{
if(featureId == Window.FEATURE_ACTION_BAR && menu != null){
if(menu.getClass().getSimpleName().equals("MenuBuilder")){
try{
Method m = menu.getClass().getDeclaredMethod(
"setOptionalIconsVisible", Boolean.TYPE);
m.setAccessible(true);
m.invoke(menu, true);
}
catch(NoSuchMethodException e){
Log.e(TAG, "onMenuOpened", e);
}
catch(Exception e){
throw new RuntimeException(e);
}
}
}
return super.onMenuOpened(featureId, menu);
}
回答2:
In your menu xml, use the following syntax to nest menu, you will start getting the menu with icons
<item
android:id="@+id/empty"
android:icon="@drawable/ic_action_overflow"
android:orderInCategory="101"
android:showAsAction="always">
<menu>
<item
android:id="@+id/action_show_ir_list"
android:icon="@drawable/ic_menu_friendslist"
android:showAsAction="always|withText"
android:title="List"/>
</menu>
</item>
回答3:
Tried this based on the previous answers and it works fine, at least with more recent versions of the support library (25.1):
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu_main, menu);
if(menu instanceof MenuBuilder){
MenuBuilder m = (MenuBuilder) menu;
//noinspection RestrictedApi
m.setOptionalIconsVisible(true);
}
return true;
}
回答4:
You can make use of SpannableString
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu_tab, menu);
MenuItem item = menu.findItem(R.id.action_login);
SpannableStringBuilder builder = new SpannableStringBuilder("* Login");
// replace "*" with icon
builder.setSpan(new ImageSpan(this, R.drawable.login_icon), 0, 1, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
item.setTitle(builder);
}
回答5:
The answer from Simon was very useful to me, so I want to share how I implemented it into the onCreateOptionsMenu-method as suggested:
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu items for use in the action bar
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.main_action_bar, menu);
// To show icons in the actionbar's overflow menu:
// http://stackoverflow.com/questions/18374183/how-to-show-icons-in-overflow-menu-in-actionbar
//if(featureId == Window.FEATURE_ACTION_BAR && menu != null){
if(menu.getClass().getSimpleName().equals("MenuBuilder")){
try{
Method m = menu.getClass().getDeclaredMethod(
"setOptionalIconsVisible", Boolean.TYPE);
m.setAccessible(true);
m.invoke(menu, true);
}
catch(NoSuchMethodException e){
Log.e(TAG, "onMenuOpened", e);
}
catch(Exception e){
throw new RuntimeException(e);
}
}
//}
return super.onCreateOptionsMenu(menu);
}
回答6:
Building on @Desmond Lua's answer from above, I made a static method for using the drawable declared in XML in the dropdown, and ensuring that it's tinted color does not affect the Constant Drawable state.
/**
* Updates a menu item in the dropdown to show it's icon that was declared in XML.
*
* @param item
* the item to update
* @param color
* the color to tint with
*/
private static void updateMenuWithIcon(@NonNull final MenuItem item, final int color) {
SpannableStringBuilder builder = new SpannableStringBuilder()
.append("*") // the * will be replaced with the icon via ImageSpan
.append(" ") // This extra space acts as padding. Adjust as you wish
.append(item.getTitle());
// Retrieve the icon that was declared in XML and assigned during inflation
if (item.getIcon() != null && item.getIcon().getConstantState() != null) {
Drawable drawable = item.getIcon().getConstantState().newDrawable();
// Mutate this drawable so the tint only applies here
drawable.mutate().setTint(color);
// Needs bounds, or else it won't show up (doesn't know how big to be)
drawable.setBounds(0, 0, drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight());
ImageSpan imageSpan = new ImageSpan(drawable);
builder.setSpan(imageSpan, 0, 1, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
item.setTitle(builder);
}
}
And using it would look something like this when used in an activity. This could probably be even more elegant depending on your individual needs.
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu_activity_provider_connect, menu);
int color = ContextCompat.getColor(this, R.color.accent_dark_grey);
updateMenuWithIcon(menu.findItem(R.id.email), color);
updateMenuWithIcon(menu.findItem(R.id.sms), color);
updateMenuWithIcon(menu.findItem(R.id.call), color);
return true;
}
回答7:
Current best, but not accepted solution probably works on older platforms. Anyway in new AppCompat21+, required method not exists and method getDeclaredMethod returns exception NoSuchMethodException.
So workaround for me (tested and working on 4.x, 5.x devices) is based on direct change background parameter. So just place this code into your Activity class.
@Override
public boolean onMenuOpened(int featureId, Menu menu) {
// enable visible icons in action bar
if (featureId == Window.FEATURE_ACTION_BAR && menu != null) {
if (menu.getClass().getSimpleName().equals("MenuBuilder")) {
try {
Field field = menu.getClass().
getDeclaredField("mOptionalIconsVisible");
field.setAccessible(true);
field.setBoolean(menu, true);
} catch (IllegalAccessException | NoSuchFieldException e) {
Logger.w(TAG, "onMenuOpened(" + featureId + ", " + menu + ")", e);
}
}
}
return super.onMenuOpened(featureId, menu);
}
回答8:
The answer by @Simon really works well... but of you are using AppCompat Activity... you will need to use this code instead...Because onMenuOpened() is not called any more in appcompat-v7:22.x
@Override
protected boolean onPrepareOptionsPanel(View view, Menu menu) {
if(menu != null){
if(menu.getClass().getSimpleName().equals("MenuBuilder")){
try{
Method m = menu.getClass().getDeclaredMethod(
"setOptionalIconsVisible", Boolean.TYPE);
m.setAccessible(true);
m.invoke(menu, true);
}
catch(NoSuchMethodException e){
Log.e(Constants.DEBUG_LOG, "onMenuOpened", e);
}
catch(Exception e){
throw new RuntimeException(e);
}
}
}
return super.onPrepareOptionsPanel(view, menu);
}
回答9:
Easiest Way I found is this :
public boolean onCreateOptionsMenu(Menu menu){
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.toolbar_menu,menu);
if(menu instanceof MenuBuilder) { //To display icon on overflow menu
MenuBuilder m = (MenuBuilder) menu;
m.setOptionalIconsVisible(true);
}
return true;
} `
回答10:
My simple mod to Simon's excellent solution to use with ActionMode:
@Override
public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
if(menu != null){
if(menu.getClass().getSimpleName().equals("MenuBuilder")){
try{
Method m = menu.getClass().getDeclaredMethod(
"setOptionalIconsVisible", Boolean.TYPE);
m.setAccessible(true);
m.invoke(menu, true);
}
catch(NoSuchMethodException e){
Log.e(TAG, "onPrepareActionMode", e);
}
catch(Exception e){
throw new RuntimeException(e);
}
}
}
return true;
}
回答11:
According to me this is only possible by creating a custom toolbar. Because default ActionBar doesn't gives you that feature. But you can put icons by taking sub menu as a child of an item. And if you have better solution than me.. just inform me.
<?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/action_settings"
android:icon="@drawable/ic_menu_camera"
android:showAsAction="never"
android:title="@string/action_settings" />
<item
android:id="@+id/action_1"
android:icon="@drawable/ic_menu_gallery"
android:showAsAction="never"
android:title="Hello" />
<item
android:id="@+id/action_search"
android:icon="@android:drawable/ic_search_category_default"
android:showAsAction="never"
android:title="action_search">
<menu>
<item
android:id="@+id/version1"
android:icon="@android:drawable/ic_dialog_alert"
android:showAsAction="never"
android:title="Cup cake" />
<item
android:id="@+id/version2"
android:icon="@drawable/ic_menu_camera"
android:showAsAction="never"
android:title="Donut" />
<item
android:id="@+id/version3"
android:icon="@drawable/ic_menu_send"
android:showAsAction="never"
android:title="Eclair" />
<item
android:id="@+id/version4"
android:icon="@drawable/ic_menu_gallery"
android:showAsAction="never"
android:title="Froyo" />
</menu>
</item>
</menu>
回答12:
This is too late but some one may help my try i got help from @Desmond Lua answer
that helps for who uses menu.xml
My answer is for dynamic menu creation here is my code:
int ACTION_MENU_ID =1;
SpannableStringBuilder builder;
@Override
public boolean onCreateOptionsMenu(Menu menu) {
//this space for icon
builder = new SpannableStringBuilder(" " + getString(R.string.your_menu_title));
builder.setSpan(new ImageSpan(this, R.drawable.ic_your_menu_icon), 0, 1, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
//dynamic menu added
menu.add(Menu.NONE,ACTION_MENU_ID, Menu.NONE,
getString(R.string.your_menu_title))
.setShowAsAction(MenuItemCompat.SHOW_AS_ACTION_WITH_TEXT | MenuItemCompat.SHOW_AS_ACTION_COLLAPSE_ACTION_VIEW);
//set icon in overflow menu
menu.findItem(ACTION_MENU_ID).setTitle(builder);
}
回答13:
Add this in style:
<menu xmlns:android="http://schemas.android.com/apk/res/android">
<item
android:id="@+id/action_settings"
app:showAsAction="always"
android:icon="@drawable/ic_more_vert_white"
android:orderInCategory="100"
android:title="">
<menu>
<item
android:id="@+id/Login"
android:icon="@drawable/ic_menu_user_icon"
android:showAsAction="collapseActionView|withText"
android:title="@string/str_Login" />
<item
android:id="@+id/str_WishList"
android:icon="@drawable/ic_menu_wish_list_icon"
android:showAsAction="collapseActionView"
android:title="@string/str_WishList" />
<item
android:id="@+id/TrackOrder"
android:icon="@drawable/ic_menu_my_order_icon"
android:showAsAction="collapseActionView"
android:title="@string/str_TrackOrder" />
<item
android:id="@+id/Ratetheapp"
android:icon="@drawable/ic_menu_rate_the_apps"
android:showAsAction="collapseActionView"
android:title="@string/str_Ratetheapp" />
<item
android:id="@+id/Sharetheapp"
android:icon="@drawable/ic_menu_shar_the_apps"
android:showAsAction="collapseActionView"
android:title="@string/str_Sharetheapp" />
<item
android:id="@+id/Contactus"
android:icon="@drawable/ic_menu_contact"
android:showAsAction="collapseActionView"
android:title="@string/str_Contactus" />
<item
android:id="@+id/Policies"
android:icon="@drawable/ic_menu_policy_icon"
android:showAsAction="collapseActionView"
android:title="@string/str_Policies" />
</menu>
</item>
</menu>
回答14:
public void showContextMenuIconVisible(Menu menu){
if (menu.getClass().getSimpleName().equals("MenuBuilder")) {
try {
Field field = menu.getClass().getDeclaredField("mOptionalIconsVisible");
field.setAccessible(true);
field.setBoolean(menu, true);
} catch (Exception ignored) {
ignored.printStackTrace();
}
}
}
回答15:
I used MashukKhan's suggestion but I showed the holder item as action always and used the vertical more dots from the vector assets as the icon.
<item
android:orderInCategory="10"
android:title=""
android:icon="@drawable/ic_more_vert"
app:showAsAction="always" >
<menu>
<item
android:id="@+id/action_tst1"
...and so on
</menu>
</item>
This produces the "overflow" menu effect and displays the icons in the drop down.
One can even put items ahead of it if they don't conflict with it showing.
I find MashukKhan's solution elegant and it fits in the solution rather than the work around category because it is just an implementation of a sub menu.
来源：https://stackoverflow.com/questions/18374183/how-to-show-icons-in-overflow-menu-in-actionbar