Android编程实现自定义分享列表ACTION_SEND功能的方法



本文实例讲述了Android编程实现自定义分享列表ACTION_SEND功能的方法。分享给大家供大家参考，具体如下：

看到最近都在做自定义的东西，因为比较灵活，还可以摆脱系统自身不怎么漂亮的UI，(大家都懂得)所以自己也做了下自定义的分享列表，用PopupWindow的方式弹出。

先上效果图:

1、布局:

popup_share.xml

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 >

popup_share_item.xml

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 >

2、查询手机内所有支持分享的应用列表

public List getShareApps(Context context) {
    List mApps = new ArrayList();
    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;
}

注：ApplicationInfo是从一个特定的应用得到的信息。这些信息是从相对应的Androdimanifest.xml的< application>标签中收集到的。

ResolveInfo这个类是通过解析一个与IntentFilter相对应的intent得到的信息。它部分地对应于从AndroidManifest.xml的< intent>标签收集到的信息。

得到List列表，我自建的AppInfo类，自己建一个就行

private List getShareAppList() {
    List shareAppInfos = new ArrayList();
    PackageManager packageManager = getPackageManager();
    List 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;
}

3、弹出PopupWindow的实现

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 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 );
}

注：ShareCustomAdapter自己建一个就行了。(有一个图标和一个分享的名)

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希望本文所述对大家Android程序设计有所帮助。