现在大多数App的分享功能基本上使用的都是微信、QQ、微博的分享sdk或者是集成友盟分享sdk，如果想简单快速的实现分享功能，可以考虑通过Intent方式打开在系统中安装的具有分享功能的App的分享页面。方法如下：
public static List<ResolveInfo> shareIntentActivities(Context context){ Intent intent = new Intent(); intent.setAction(Intent.ACTION_SEND); intnet.setType("text/plain"); PackageManager packageManager = context.getPackageManager(); List<ResolveInfo> resolveInfos = packageManager.queryIntentActivities(intent, 0); return resloveInfos; }如果只需要QQ和微信分享，可以进行如下操作：
public static List<ResolveInfo> shareIntentActivities(Context context){ Intent intent = new Intent(); intent.setAction(Intent.ACTION_SEND); intnet.setType("text/plain"); PackageManager packageManager = context.getPackageManager(); List<ResolveInfo> resolveInfos = packageManager.queryIntentActivities(intent, 0); List<ResolveInfo> shareItems = new ArrayList(); for(ResolveInfo info: resolveInfos) { String name = info.activityInfo.packageName; if (TextUtils.equals(packageName, "com.tencent.mm") || TextUtils.equals(packageName, "com.tencent.mobileqq")) { shareItems.add(resolveInfo); } } return shareItems; }通过ResolveInfo获取图标ICON和Label:
Drawable drawable = resloveInfo.loadIcon(packageManager); CharSequence label = resolveInfo.loadLabel(packageManager);通过Intent发起分享：
public static void share(Context context, ResolveInfo info, String shareContent){ Intent itnent = new Intent(); intnet.setAction(Intent.ACTION_SEND); String pkg = resolveInfo.activityInfo.packageName; String cls = resolveInfo.activityInfo.name; intent.setComponent(new Component(pkg, cls)); intent.putExtra(Intent.EXTRA_TEXT, shareContent); context.startActivity(intent); }原文地址：https://xiaowujiang.cn/posts/73a6d0c4/
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