How do I remove the space in front of a custom view?

I am creating a custom house icon. The setting codes are as follows:

View customView = getLayoutInflater().inflate(R.layout.action_bar_display_options_custom, null);
customView.findViewById(R.id.action_home).setOnClickListener(
    new OnClickListener() {
        @Override
        public void onClick(View v) {
            toggle();
        }
    });

actionBar.setCustomView(customView, new ActionBar.LayoutParams(
            LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT));
actionBar.setDisplayShowCustomEnabled(true);

      

        
        
        
      

    

This action_bar_display_options_custom.xml

,

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 android:layout_width="match_parent"
    android:layout_height="match_parent"
android:orientation="horizontal" >

<ImageView
    android:id="@+id/action_home"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:src="@drawable/btn_home" />

<TextView
    android:id="@+id/action_title"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content" /> </LinearLayout>

      

        
        
        
      

    

This is a screenshot,

This is the house icon (this space is not part of the image),

So how can I remove the space in front of the view?