Android-静态AsyncTask中的getPackageManager

Question

最近3个小时，我一直在为此挠头。我想处理AsyncTask中的应用程序列表，它是活动的子类，然后在recyclerview中显示结果。如果不是因为可能发生内存泄漏的事实，它可以很好地工作而不将AsyncTask设为静态。

我曾尝试将PackageManager packageManager = getApplicationContext().getPackageManager();放在onPreExecute或活动的onCreate中，但是它仍然向我显示警告，提示不能从静态上下文中引用非静态方法...

这是工作代码，如果您有兴趣查看它的话，但这不是可行的方法（非静态AsyncTask！）：

AppDrawer.java：

public class AppDrawer extends Activity {

    private static final String TAG = "AppDrawer";
    private AppListAdapter appListAdapter;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.app_drawer);

        appListAdapter = new AppListAdapter(this);
        RecyclerView recyclerView = findViewById(R.id.recycler_view);
        recyclerView.setAdapter(appListAdapter);
        recyclerView.setLayoutManager(new LinearLayoutManager(this));

        new newThread().execute();
    }

    public void updateStuff() {
        appListAdapter.notifyItemInserted(appListAdapter.getItemCount()-1);

    }

    public class newThread extends AsyncTask<Void, Void, String> {

        @Override
        protected String doInBackground(Void... voids) {

            PackageManager packageManager = getApplicationContext().getPackageManager();
            AppListAdapter.appList = new ArrayList<>();

            Intent intent = new Intent(Intent.ACTION_MAIN, null);
            intent.addCategory(Intent.CATEGORY_LAUNCHER);

            List<ResolveInfo> apps = packageManager.queryIntentActivities(intent, 0);
            for (ResolveInfo app:apps) {
                AppData newApp = new AppData();
                newApp.setName(app.loadLabel(packageManager).toString());
                newApp.setPackageName(app.activityInfo.packageName);
                newApp.setIcon(app.activityInfo.loadIcon(packageManager));
                AppListAdapter.appList.add(newApp);
            }

            return "Success";

        }

        @Override
        protected void onPostExecute(String result) {
            super.onPostExecute(result);
            updateStuff();
        }

    }
}

AppListAdapter.java：

public class AppListAdapter extends RecyclerView.Adapter<AppListAdapter.ViewHolder> {
    public static List<AppData> appList;


    public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
        TextView appName;
        ImageView appIcon;

        ViewHolder(View itemView) {
            super(itemView);
            appName = itemView.findViewById(R.id.appNameTextView);
            appIcon = itemView.findViewById(R.id.appIconImageView);
            itemView.setOnClickListener(this);
        }

        @Override
        public void onClick(View view) {
            int position = getAdapterPosition();
            Context context = view.getContext();
            Intent launchIntent = context.getPackageManager().getLaunchIntentForPackage(appList.get(position).getPackageName());
            context.startActivity(launchIntent);
        }
    }

    public AppListAdapter(Context context) {
        appList = new ArrayList<>();
    }

    @Override
    public void onBindViewHolder(@NonNull AppListAdapter.ViewHolder viewHolder, int integer) {
        String appName = appList.get(integer).getName();
        String appPackageName = appList.get(integer).getPackageName();
        Drawable appIcon = appList.get(integer).getIcon();

        TextView textView = viewHolder.appName;
        textView.setText(appName);

        ImageView imageView = viewHolder.appIcon;
        imageView.setImageDrawable(appIcon);
    }

    @Override
    public int getItemCount() {
        return appList.size();
    }

    @NonNull
    @Override
    public AppListAdapter.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        LayoutInflater inflater = LayoutInflater.from(parent.getContext());
        View view = inflater.inflate(R.layout.app_item_view, parent, false);
        return new ViewHolder(view);
    }

}

因此，我又该如何从静态 AsyncTask获取应用列表？