android - 有什么方法可以查询特定类型的支持 Intent Filter 的应用程序吗？

Question

我正在寻找一种方法来在设备中搜索所有能够使用操作“VIEW”和类别“BROWSABLE”过滤 Intent 的应用程序？

我找到了以下链接并了解了如何列出所有 Intent 过滤器，但我如何才能只列出那些只有上述参数的过滤器？

http://developer.android.com/reference/android/content/pm/PackageManager.html#queryIntentActivities%28android.content.Intent,%20int%29

Get intent filter for receivers

How to filter specific apps for ACTION_SEND intent (and set a different text for each app)

提前致谢

Answer 1

此代码或多或少应该可以满足您的需求。主要问题是，我认为您不会找到任何过滤 CATEGORY_BROWSABLE 而不需要特定类型的 data 的 Activity 。我在我的手机上试过了，但在我对 Intent 添加 setData() 调用之前，我没有得到任何有用的信息。

    PackageManager manager = getPackageManager();
    Intent intent = new Intent();
    intent.setAction(Intent.ACTION_VIEW);
    intent.addCategory(Intent.CATEGORY_BROWSABLE);
    // NOTE: Provide some data to help the Intent resolver
    intent.setData(Uri.parse("http://www.google.com"));
    // Query for all activities that match my filter and request that the filter used
    //  to match is returned in the ResolveInfo
    List<ResolveInfo> infos = manager.queryIntentActivities (intent,
                                   PackageManager.GET_RESOLVED_FILTER);
    for (ResolveInfo info : infos) {
        ActivityInfo activityInfo = info.activityInfo;
        IntentFilter filter = info.filter;
        if (filter != null && filter.hasAction(Intent.ACTION_VIEW) &&
                  filter.hasCategory(Intent.CATEGORY_BROWSABLE)) {
            // This activity resolves my Intent with the filter I'm looking for
            String activityPackageName = activityInfo.packageName;
            String activityName = activityInfo.name;
            System.out.println("Activity "+activityPackageName + "/" + activityName);
        }
    }
}