Android - 通知内容 View 中的ListView

Question

我可以将 ListView 放在通知的内容 View 中吗？如果可以，我该怎么做？

在另一个应用程序中，我在小部件中有一个 ListView，使用 RemoteViews.setRemoteAdapter()、RemoteViewsService 和 RemoteViewsService.RemoteViewsFactory，它正在工作。

我试过对通知做同样的事情，但它不起作用。应用程序没有崩溃，日志中没有错误，但 ListView 没有显示。甚至没有调用 RemoteViewsService。

创建通知:

NotificationCompat.Builder builder = new NotificationCompat.Builder(this);

RemoteViews views = new RemoteViews(getPackageName(), R.layout.notification);
views.setRemoteAdapter(R.id.lvNotificationList, new Intent(this, ListService.class));

builder
        .setSmallIcon(R.mipmap.ic_launcher)
        .setOngoing(true)
        .setContentTitle("Test")
        .setContent(views)
        .setCustomBigContentView(views)
        .setCustomHeadsUpContentView(views)
        .setCustomContentView(views);
Notification not = builder.build();

通知布局:

<?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">

<TextView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="My list should appear below this" />

<ListView
    android:id="@+id/lvNotificationList"
    android:layout_width="match_parent"
    android:layout_height="100dp" />

列表服务:

public class ListService extends RemoteViewsService {
    private static final String TAG = "MyTag";

    @Override
    public RemoteViewsFactory onGetViewFactory(Intent intent) {
        Log.d(TAG, "onGetViewFactory()");
        return new ListProvider(getApplicationContext());
    }
}

list 服务声明:

<service
    android:name=".ListService"
    android:permission="android.permission.BIND_REMOTEVIEWS" />

列表提供者:

public class ListProvider implements RemoteViewsService.RemoteViewsFactory  {
    private static final String TAG = "MyTag";

    private Context context;

    public ListProvider(Context context) {
        this.context = context;
    }

    @Override
    public void onCreate() {
    }

    @Override
    public void onDestroy() {
    }

    @Override
    public int getCount() {
        return songs.size();
    }

    @Override
    public RemoteViews getViewAt(int position) {
        Log.d(TAG, "ListProvider.getViewAt(), position=" + position);

        RemoteViews ret = new RemoteViews(context.getPackageName(), R.layout.row_notification_list);
        ...
        return ret;
    }

    @Override
    public RemoteViews getLoadingView() {
        return null;
    }

    @Override
    public int getViewTypeCount() {
        return 1;
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public boolean hasStableIds() {
        return true;
    }

    @Override
    public void onDataSetChanged() {
    }
}

显示了 ListView 上方的 TextView，但列表仍为空...

Answer 1

看起来我应该有 RTFM... 来自 https://developer.android.com/reference/android/widget/RemoteViews.html :

void setRemoteAdapter (int viewId, Intent Intent )

相当于调用setRemoteViewsAdapter(Intent)。 只能用于 App Widget。

所以我想我的问题“我可以将 ListView 放在通知的内容 View 中吗”的答案是不...