OnOptionsItemSelected 没有为具有自定义 actionLayout 的操作栏菜单项调用

Question

I'm trying to implement a notification icon in my actionbar to show the count of notifications. Something like

I've added a custom layout file for it NotificationIcon.xml :

  <!-- Menu Item Image -->
  <ImageButton
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:padding="2dp"
      android:clickable="true"
      android:src="@drawable/notification" />

  <!-- Badge Count -->
  <TextView
      android:id="@+id/actionbar_notifcation_textview"
      android:layout_width="wrap_content"
      android:layout_height="20dp"
      android:minWidth="20dp"
      android:layout_alignParentRight="true"
      android:gravity="center_horizontal"
      android:background="@drawable/circle_green"
      android:fontFamily="sans-serif-black"
      android:textStyle="bold"
      android:text="0"
      android:textColor="#FFFFFF" />
</RelativeLayout>

And used it in my menu as main_activity_actions.xml :

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
  <item
        android:id="@+id/action_add"
        android:title="@string/AddTag"
        android:icon="@+drawable/ic_action_new"
        android:showAsAction="always" />
  <item
        android:id="@+id/notification_icon"
        android:title="@string/PendingJobs"
        android:actionLayout="@layout/notificationIcon"
        android:icon="@+drawable/notification"
        android:showAsAction="always" />
  <item
        android:id="@+id/gps_status_icon"
        android:title="@string/GPS"
        android:icon="@+drawable/gps_grey"
        android:showAsAction="always" />
</menu>

The UI looks fine but the OnOptionsItemSelected is not being called for the notification icon. It works fine for the other two. I did google this and ound this link: onOptionsItemSelected not getting called when using custom action view

I tried to implement it in my main activity:

public override bool OnCreateOptionsMenu(IMenu menu)
        {
            actionBarMenu = menu;
            MenuInflater.Inflate(Resource.Menu.main_activity_actions, menu);

            var notificationMenuItem = menu.FindItem(Resource.Id.notification_icon);
            notificationMenuItem.ActionView.Click += (sender, args) => {
                this.OnOptionsItemSelected(notificationMenuItem);
            };

            return base.OnCreateOptionsMenu(menu);
        }

but it does not works for me. It never fires the click event. Please help.

Answer 1

@Override
    public boolean onCreateOptionsMenu(Menu menu) {
        MenuInflater inflater = getSupportMenuInflater();

                inflater.inflate(R.menu.main_activity_actions, menu);

        final View notification_icon= menu.findItem(R.id.notification_icon).getActionView();


        notification_icon.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {
// write ur code here
}

        });
        return super.onCreateOptionsMenu(menu);
    }

use this code......hope it helps :)

Answer 2

i struggle with the same Problem and found following Solution:

First of all: i really don't know why but if you delete the

android:clickable="true"

then ... and ONLY then you get the click event!!!

Second: you have to set the Listener...

...    
item.getActionView().setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            //Do Your Stuff.....
        }
});

May someone can Explain why this is with the "android:clickable" Thing... i tough the standard value IS true??

Answer 3

You had made ImageButton clickable, and then written the clickListener for the Layout of menuItem. You can observe that if you click outside the ImageButton but inside the MenuItem layout, your listener will work. The reason is simple clickListener for ImageButton has nothing to do, on setting Clickable = true defines whether this button reacts to click events. Just simply set Clickable = false, your button will not react to its click event, eventually your whole layout will react to your defined clickListener and then your problem will be solved.