带有ArrayAdapter的ListView未在Android 11上显示内容

Question

在我们的android应用程序中，高级设置显示在其正常设置下的列表视图中。默认情况下，只有事先输入了密码，才会填充列表视图。在我们在安卓11上测试该应用程序之前，这一切都很顺利。现在，如果输入了密码，列表视图将保持为空。调试表明，连接到列表视图的ArrayAdapter确实填充了正确的数据。在安卓10或更低版本的设备上测试效果非常好。

任何进一步调试或查阅android迁移指南的尝试都没有结果。有人中枪了吗？

XML:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">

<View
style="@style/Divider"
android:background="@color/BlueDark" />
<ListView
android:id="@+id/settings_list_view"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="0dp"
android:divider="@color/Blue"
android:dividerHeight="1dp"></ListView>
<View
style="@style/Divider"
android:background="@color/Blue" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginBottom="4dp"
android:layout_marginTop="0dp"
android:orientation="vertical">
<ListView
android:id="@+id/advanced_settings_list_view"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:divider="@color/Green"
android:dividerHeight="1dp">
</ListView>
</LinearLayout>
<View
style="@style/Divider"
android:background="@color/BlueDark" />
</LinearLayout>

阵列适配器：

public class SettingsListAdapter extends ArrayAdapter<SettingsItemDataModel> {
// View lookup cache
private static class ViewHolder {
TextView txtSettingLabel;
TextView txtSetting;
}
Context mContext;
public SettingsListAdapter(ArrayList<SettingsItemDataModel> data, Context context) {
super(context, R.layout.row_item, data);
this.mContext = context;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
// Get the data item for this position
SettingsItemDataModel dataModel = getItem(position);
// Check if an existing view is being reused, otherwise inflate the view
ViewHolder viewHolder; // view lookup cache stored in tag
if (convertView == null) {
viewHolder = new ViewHolder();
LayoutInflater inflater = LayoutInflater.from(getContext());
convertView = inflater.inflate(R.layout.row_item, parent, false);
viewHolder.txtSettingLabel = convertView.findViewById(R.id.setting_list_child_label);
viewHolder.txtSetting = convertView.findViewById(R.id.setting_list_child_setting);
convertView.setTag(viewHolder);
} else {
viewHolder = (ViewHolder) convertView.getTag();
}
viewHolder.txtSettingLabel.setText(dataModel.getSettingPair()[0]);
viewHolder.txtSetting.setText(dataModel.getSettingPair()[1]);
// Return the completed view to render on screen
return convertView;
}
}

活动(仅相关部分。当用户正确输入密码时，会调用updateAdvancedSettings(((：

private ArrayList<SettingsItemDataModel> settings;
private ListView advancedSettingsListView;
private SettingsListAdapter advancedSettingsListAdapter;
private ArrayList<SettingsItemDataModel> advancedSettings = new ArrayList<>();
private void setupListViews(View tabView) {
settings = new ArrayList<>();
for (SettingsItemDataModel.Identifier key : SettingsService.getInstance().getSettings().keySet()) {
SettingsItemDataModel chldData = new SettingsItemDataModel(key, SettingsService.getInstance().getSettings().get(key));
settings.add(chldData);
}
ListView settingsListView = tabView.findViewById(R.id.settings_list_view);
SettingsListAdapter settingsListAdapter = new SettingsListAdapter(settings, context);
settingsListView.setAdapter(settingsListAdapter);
settingsListView.setOnItemClickListener((parent, view, position, id) -> {
if (!isNavigationLocked()) {
Object object = parent.getItemAtPosition(position);
SettingsItemDataModel dataModel = (SettingsItemDataModel) object;
if (SettingsItemDataModel.Identifier.ADV_SETTINGS.equals(dataModel.getSettingsIdentifier())) {
showAdvancedSettingsDialog();
} else if (SettingsItemDataModel.Identifier.LANGUAGE.equals(dataModel.getSettingsIdentifier())) {
Intent intent = new Intent(Settings.ACTION_LOCALE_SETTINGS);
startActivity(intent);
} else if (FASTMODE.equals(dataModel.getSettingsIdentifier())) {
showInputSettingsRadioDialog(dataModel);
}
}
});
advancedSettingsListView = tabView.findViewById(R.id.advanced_settings_list_view);
advancedSettingsListAdapter = new SettingsListAdapter(advancedSettings, context);
advancedSettingsListView.setAdapter(advancedSettingsListAdapter);
advancedSettingsListView.setOnItemClickListener((parent, view, position, id) -> {
if (!isNavigationLocked()) {
Object object = parent.getItemAtPosition(position);
SettingsItemDataModel dataModel = (SettingsItemDataModel) object;
if (DEL_ALL_MAILS.equals(dataModel.getSettingsIdentifier())) {
showSimpleSettingsDialog(dataModel);
} else if (IMG_FILE_TYPE.equals(dataModel.getSettingsIdentifier())) {
showInputSettingsRadioDialog(dataModel);
} else if (IMG_COMP_LEV.equals(dataModel.getSettingsIdentifier())) {
showInputSettingsSeekBarDialog(dataModel);
} else if (SWIPE.equals(dataModel.getSettingsIdentifier())) {
showInputSettingsRadioDialog(dataModel);
} else if (ZIP_COMP_TYPE.equals(dataModel.getSettingsIdentifier())) {
showInputSettingsRadioDialog(dataModel);
} else if (ZIP_COMP_LEV.equals(dataModel.getSettingsIdentifier())) {
showInputSettingsSpinnerDialog(dataModel);
} else {
showInputSettingsDialog(dataModel);
}
}
});
settingsListView.invalidate();
advancedSettingsListView.invalidate();
}
public void updateAdvancedSettings() {
advancedSettings.clear();
LinkedHashMap<SettingsItemDataModel.Identifier, String[]> advSettingData = null;
advSettingData = SettingsService.getInstance().getAdvancedSettings();
for (SettingsItemDataModel.Identifier key : advSettingData.keySet()) {
SettingsItemDataModel chldData = new SettingsItemDataModel(key, advSettingData.get(key));
advancedSettings.add(chldData);
}
try {
SettingsService.getInstance().saveExtAdvancedSetting();
} catch (IOException e) {
e.printStackTrace();
}
}

Answer 1

答案很简单。我必须打电话给

advancedSettingsListAdapter.notifyDataSetChanged();

在我填充适配器之后手动。无论出于何种原因，这似乎是从以前版本的操作系统中自动完成的。