Android 自定义分享列表ACTION_SEND

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<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;
}

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<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;
}

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<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);
}

注：ShareCustomAdapter自己建一个就行了。(有一个图标和一个分享的名)
参考地址: PackageInfo、ResolveInfo