Xamarin.Android ActionBar logo click listener

Question

I want to handle my custom logo click on ActionBar.

 <style name="ReadingsActionBarTheme"
    parent="@android:style/Theme.Holo.Light.DarkActionBar">
<item name="android:actionBarStyle">@style/Readings.ActionBar</item>
<item name="logo">@drawable/back</item>
<item name="android:logo">@drawable/back</item>

Style

I must compile on Android 4.4 and here is what I tried:

public override bool OnOptionsItemSelected(Xamarin.ActionbarSherlockBinding.Views.IMenuItem item)
    {
        switch (item.ItemId)
        {
            case Android.Resource.Id.Home:
                var homeActivity = new Intent(this, typeof(HomeActivity));
                StartActivity(homeActivity); ;
                break;
        }
        return base.OnOptionsItemSelected(item);
    }

Any solution?

Answer 1

I want to handle my custom logo click on ActionBar.

You can follow the below steps to handle icon click on ActionBar;

1. Firstly, please make sure you are using Android.Support.V7.App.AppCompatActivity If not, please install Xamarin.Android.Support.v7.AppCompat through nuget and inherit your activity from AppCompatActivity .

2. Secondly, please define your menu items in Resource\\menu\\actionbar_items.xml :

    <?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_favorite" android:icon="@drawable/iconName" android:title="favorite" app:showAsAction="ifRoom"/> </menu> 

3. Inflate the menu in OnCreateOptionsMenu :

    public override bool OnCreateOptionsMenu(IMenu menu) { MenuInflater.Inflate(Resource.Menu.actionbar_items, menu); return base.OnCreateOptionsMenu(menu); } 

4. Handle the item click event in OnOptionsItemSelected :

    public override bool OnOptionsItemSelected(IMenuItem item) { switch (item.ItemId) { case Resource.Id.action_favorite: //do something break; } return base.OnOptionsItemSelected(item); } 

Here is the complete Activity:

[Activity(Label = "ActionbarClickDemo", MainLauncher = true,Theme ="@style/AppTheme")]
public class MainActivity : AppCompatActivity
{
    protected override void OnCreate(Bundle savedInstanceState)
    {
        base.OnCreate(savedInstanceState);

        // Set our view from the "main" layout resource
        SetContentView(Resource.Layout.Main);
        Android.Support.V7.Widget.Toolbar myToolbar = (Android.Support.V7.Widget.Toolbar)FindViewById(Resource.Id.my_toolbar);
        SetSupportActionBar(myToolbar);
    }

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

        return base.OnCreateOptionsMenu(menu);
    }

    public override bool OnOptionsItemSelected(IMenuItem item)
    {
        switch (item.ItemId)
        {
            case Resource.Id.action_favorite:
                //do something
                break;
        }
        return base.OnOptionsItemSelected(item);
    }
}

And here is the AppTheme:

<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
</style>

For Creation of ActionBar, please refer to Setting Up the App Bar ;

For Add Items to ActionBar, please refer to Add Views and Action Providers