Android编程实现自定义分享列表ACTION_SEND功能的方法

<?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" >
 <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>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:gravity="center_vertical"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:padding="2.0dip" >
  <ImageView
    android:id="@+id/share_item_icon"
    android:layout_width="32.0dip"
    android:layout_height="32.0dip"
    android:layout_marginLeft="3.0dip"
    android:scaleType="fitXY" />
  <TextView
    android:id="@+id/share_item_name"
    android:gravity="center"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="分享"
    android:textColor="@color/white"
    android:singleLine="true"
    android:textSize="@dimen/s_size"
    android:layout_marginLeft="3.0dip"
    android:layout_marginRight="3.0dip" />
</LinearLayout>

public List<ResolveInfo> getShareApps(Context context) {
    List<ResolveInfo> mApps = new ArrayList<ResolveInfo>();
    Intent intent = new Intent(Intent.ACTION_SEND, null);
    intent.addCategory(Intent.CATEGORY_DEFAULT);
    intent.setType("text/plain");
//   intent.setType("*/*");
    PackageManager pManager = context.getPackageManager();
    mApps = pManager.queryIntentActivities(intent,
        PackageManager.COMPONENT_ENABLED_STATE_DEFAULT);
    return mApps;
}

private List<AppInfo> getShareAppList() {
    List<AppInfo> shareAppInfos = new ArrayList<AppInfo>();
    PackageManager packageManager = getPackageManager();
    List<ResolveInfo> resolveInfos = getShareApps(mContext);
    if (null == resolveInfos) {
      return null;
    } else {
      for (ResolveInfo resolveInfo : resolveInfos) {
        AppInfo appInfo = new AppInfo();
        appInfo.setAppPkgName(resolveInfo.activityInfo.packageName);
//       showLog_I(TAG, "pkg>" + resolveInfo.activityInfo.packageName + ";name>" + resolveInfo.activityInfo.name);
        appInfo.setAppLauncherClassName(resolveInfo.activityInfo.name);
        appInfo.setAppName(resolveInfo.loadLabel(packageManager).toString());
        appInfo.setAppIcon(resolveInfo.loadIcon(packageManager));
        shareAppInfos.add(appInfo);
      }
    }
    return shareAppInfos;
}

private void initSharePopupWindow(View parent) {
    PopupWindow sharePopupWindow = null;
    View view = null;
    ListView shareList = null;
    if(null == sharePopupWindow) {
      //加载布局文件
      view = LayoutInflater.from(DetailExchangeActivity.this).inflate(R.layout.popup_share, null);
      shareList = (ListView) view.findViewById(R.id.share_list);
      List<AppInfo> shareAppInfos = getShareAppList();
      final ShareCustomAdapter adapter = new ShareCustomAdapter(mContext, shareAppInfos);
      shareList.setAdapter(adapter);
      shareList.setOnItemClickListener(new OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> parent, View view,
            int position, long id) {
          // TODO Auto-generated method stub
          Intent shareIntent = new Intent(Intent.ACTION_SEND);
          AppInfo appInfo = (AppInfo) adapter.getItem(position);
          shareIntent.setComponent(new ComponentName(appInfo.getAppPkgName(), appInfo.getAppLauncherClassName()));
          shareIntent.setType("text/plain");
//         shareIntent.setType("*/*");
          //这里就是组织内容了，
          shareIntent.putExtra(Intent.EXTRA_TEXT, "测试，这里发送推广地址");
          shareIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
          DetailExchangeActivity.this.startActivity(shareIntent);
        }
      });
      sharePopupWindow = new PopupWindow(view,
          (int)(160 * density), LinearLayout.LayoutParams.WRAP_CONTENT);
    }
    //使其聚焦
    sharePopupWindow.setFocusable(true);
    //设置允许在外点击消失
    sharePopupWindow.setOutsideTouchable(true);
    // 这个是为了点击“返回Back”也能使其消失，并且并不会影响你的背景
    sharePopupWindow.setBackgroundDrawable(new BitmapDrawable());
    //xoff,yoff基于anchor的左下角进行偏移。正数表示下方右边，负数表示（上方左边）
    //showAsDropDown(parent, xPos, yPos);
    sharePopupWindow.showAsDropDown(parent, -5, 5);
}