分享应用列表怎么在Android应用中获取

<&#63;xml version="1.0" encoding="utf-8"&#63;> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"   android:layout_width="fill_parent"    android:layout_height="wrap_content" >  <ListView      android:id="@+id/share_list"      android:background="#2F4F4F"      android:fadingEdge="none"      android:layout_width="fill_parent"      android:layout_height="wrap_content"      android:cacheColorHint="#00000000"      android:divider="#E2DD75"      android:dividerHeight="1.0dip"      android:headerDividersEnabled="true"      android:footerDividersEnabled="false" /> </LinearLayout>