android - Android 中的 ApplicationInfo 适配器，仅显示具有启动器意图的应用程序

Question

根据标题，我正在寻找一种仅显示具有启动器意图的应用程序的解决方案。这是我检索应用程序列表的代码：

public static List<ApplicationInfo> getInstalledApplication(Context context) {
    PackageManager packageManager = context.getPackageManager();
    List<ApplicationInfo> apps = packageManager.getInstalledApplications(0);
    Collections.sort(apps, new ApplicationInfo.DisplayNameComparator(packageManager));
    return apps;
}

是否可以添加规则以删除所有没有启动器意图的包？谢谢

Answer 1

你可以使用queryIntentActivities();

Intent intent = new Intent()
    .setAction(Intent.ACTION_MAIN)
    .addCategory(Intent.CATEGORY_LAUNCHER);
PackageManager packageManager = context.getPackageManager();
List<ResolveInfo> list = packageManager.queryIntentActivities(intent, PackageManager.MATCH_DEFAULT_ONLY);
List<ApplicationInfo> appInfoList = new ArrayList<>();
for (ResolveInfo info : list) {
    ApplicationInfo appInfo = packageManager.getApplicationInfo(info.activityInfo.packageName, PackageManager.GET_META_DATA);
    appInfoList.add(appInfo);
}
Collections.sort(appInfoList, new ApplicationInfo.DisplayNameComparator(packageManager));

这应该为您提供 Launcher 活动的所有意图。请注意 MATCH_DEFAULT_ONLY 应确保您仅获取标记为应用程序默认启动器活动的活动。

编辑：小心 MATCH_DEFAULT_ONLY。它可能会减少您获得的已安装应用程序的数量。

Answer 2

我设法使用 marcus.ramsden 提供的代码自行解决：

public static List<ApplicationInfo> getInstalledApplication(Context context) {
    PackageManager packageManager = context.getPackageManager();
    List<ApplicationInfo> apps = packageManager.getInstalledApplications(0);
    List<ApplicationInfo> appInfoList = new ArrayList();
    for (ApplicationInfo info : apps) {
        if (packageManager.getLaunchIntentForPackage(info.packageName) != null) {
            appInfoList.add(info);
        }
    }
    Collections.sort(appInfoList, new ApplicationInfo.DisplayNameComparator(packageManager));
    return appInfoList;
}