即使在保存后，Switch 在滚动时也会丢失其状态

问：

我正在使用“ListView”来显示所有系统应用程序及其名称、图标和开关，并希望保存开关的状态，如果我选中它并关闭应用程序，它会保存状态，但是如果我向下滚动列表，开关会丢失其状态。

我希望它在任何情况下都能保存开关状态，但在向下滚动列表后它会丢失状态 这是我的代码：

public class system_apps extends Fragment {

    private static final String PREFERENCE_KEY = "AppSwitchStates";
    private List<AppInfo> systemAppInfos = new ArrayList<>();
    private AppListAdapter adapter;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.fragment_system_apps, container, false);

        ListView listView = view.findViewById(R.id.system_app_list);
        adapter = new AppListAdapter(requireContext(), systemAppInfos);
        listView.setAdapter(adapter);

        // Populate the list of system apps
        systemAppInfos.clear();
        systemAppInfos.addAll(getSystemAppInfos());
        adapter.notifyDataSetChanged();

        return view;
    }

    private List<AppInfo> getSystemAppInfos() {
        List<AppInfo> appInfos = new ArrayList<>();
        PackageManager packageManager = requireContext().getPackageManager();

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

        List<ResolveInfo> allAppInfos = packageManager.queryIntentActivities(mainIntent, 0);
        SharedPreferences preferences = requireContext().getSharedPreferences(PREFERENCE_KEY, Context.MODE_PRIVATE);

        for (ResolveInfo resolveInfo : allAppInfos) {
            if ((resolveInfo.activityInfo.applicationInfo.flags & android.content.pm.ApplicationInfo.FLAG_SYSTEM) != 0) {
                String appName = resolveInfo.loadLabel(getContext().getPackageManager()).toString();
                boolean isSelected = preferences.getBoolean(appName, false);
                Drawable appIcon = resolveInfo.loadIcon(packageManager);
                AppInfo appInfo = new AppInfo(appName, appIcon, isSelected);
                appInfos.add(appInfo);
            }
        }

        return appInfos;
    }

    private class AppListAdapter extends ArrayAdapter<AppInfo> {

        AppListAdapter(Context context, List<AppInfo> appInfos) {
            super(context, R.layout.list_item_app, appInfos);
        }

        @NonNull
        @Override
        public View getView(int position, @Nullable View convertView, @NonNull ViewGroup parent) {
            if (convertView == null) {
                convertView = LayoutInflater.from(getContext()).inflate(R.layout.list_item_app, parent, false);
            }

            AppInfo appInfo = getItem(position);

            if (appInfo != null) {
                TextView appNameTextView = convertView.findViewById(R.id.app_name);
                ImageView appIconImageView = convertView.findViewById(R.id.app_icon);
                Switch appSwitch = convertView.findViewById(R.id.app_switch);

                appNameTextView.setText(appInfo.appName);
                appIconImageView.setImageDrawable(appInfo.appIcon);
                appSwitch.setChecked(appInfo.isSelected);

                // Set a listener to update the switch state
                appSwitch.setOnCheckedChangeListener((buttonView, isChecked) -> {
                    // Update the switch state in the AppInfo object
                    appInfo.isSelected = isChecked;
                    // Save the switch state
                    saveSwitchState(appInfo.appName, isChecked);
                    
                    // Handle any additional logic here
                });

                // Show the switch for system apps
                appSwitch.setVisibility(View.VISIBLE);
            }

            return convertView;
        }
    }

    private void saveSwitchState(String appName, boolean isChecked) {
        SharedPreferences preferences = requireContext().getSharedPreferences(PREFERENCE_KEY, Context.MODE_PRIVATE);
        SharedPreferences.Editor editor = preferences.edit();
        editor.putBoolean(appName, isChecked);
        editor.apply();
    }

    private static class AppInfo {
        String appName;
        Drawable appIcon;
        boolean isSelected;

        AppInfo(String name, Drawable icon, boolean selected) {
            appName = name;
            appIcon = icon;
            isSelected = selected;
        }
    }
}