Context menu in list activity

I have list activity with custom array adapter and I can't to get context menu when make long press on list item.

<TabWidget
            android:id="@android:id/tabs"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"/>
    <FrameLayout
            android:id="@android:id/tabcontent"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:padding="5dp">
        <ListView
                android:id="@+id/list"
                android:layout_width="fill_parent"
                android:layout_height="fill_parent"
                />

    </FrameLayout>

list item layout

    <?xml version="1.0" encoding="utf-8"?>
     <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              android:layout_width="fill_parent"
              android:layout_height="wrap_content"
        >
    <ImageView
            android:id="@+id/icon"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            />
    <TextView
            android:id="@+id/info"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:padding="10dp"
            android:textSize="15sp"
            android:singleLine="true"
            android:ellipsize="marquee"
            android:scrollHorizontally = "true"
            android:maxWidth="200dp"
            />


    <LinearLayout
             android:layout_width="fill_parent"
             android:layout_height="fill_parent"
             android:gravity="right"
            >
        <ImageButton
                android:id="@+id/button"
                android:layout_width="wrap_content"
                android:layout_height="fill_parent"
                android:background="@nu开发者_如何学Goll"
                android:paddingRight="10dp"                
                android:paddingLeft="10dp"


                />
    </LinearLayout>

</LinearLayout>

In activity

@Override
public void onCreate(Bundle savedInstanceState) {
   registerForContextMenu(getListView());
}

    @Override
    public void onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) {
        MenuInflater inflater = getMenuInflater();
        inflater.inflate(R.menu.context_menu, menu);



  }

Why I do not see context menu? What I do wrong? How to get context menu with array adapter and ListActivity. Thanks!

Custom ListView and context menu. How to get it?

You need to set the property LongClickable for the first LinearLayout from list item layout file:

    <?xml version="1.0" encoding="utf-8"?>
     <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              android:layout_width="fill_parent"
              android:layout_height="wrap_content"
              android:longClickable="true"
        >
...