AppWidget | Demo for Android App Widget | Android library

My app widget (ListView showing game scores) works fine when created on the home screen, but when I call appWidgetManager.updateAppWidget(id, R.id.appwidget) inside the provider, there is no reaction from the widget or the log calls in the RemoteViewsFactory's onCreate() or onDataSetChanged() methods. I know that the updateAppWidget gets called because I can see the log call right before it.

Why is the widget not updating?

My AppWidgetProvider:

From the AppWidget (home of the material app), I am returning a GridView. Below is the code of AppWidget's build method:

I'm trying to set the background resource of my layout in my app widget. I'm using setBackground resource with RemoteViews like so:

I have a bussness app that count time, set macros and show notification and alerts. I have a problem when app goes to background and Android stop my counting tasks.

I tried many things to keep these tasks alive, but I failed. This notification need to work offline, so FCM not a good solution.

How can I work arround it?

Obs.: When app goes to foreground, all tasks work and show all notifications... But I need to alert user just in time, not only in foreground.

I founded a solution!

Searching the site https://dontkillmyapp.com/ I saw many apps with the same problem and some solution ideas for differets brands and models.

After checking some of them, I saw that many installed apps has this config for default, so I search how can I do it programactlly.

Here the solution:

pubspec.yaml

I am trying to do a simple widget for my app, which displays data from an API on the widget using ListView, but the list is empty even tho Logs says that the data was downloaded successfully. Blank listView is displayed with no data in it. No errors are shown. What's the cause of it?

Resources I used when tried to solve this problem:

official documentation - https://developer.android.com/guide/topics/appwidgets#collections

similar question - How to use listview in a widget?

my AppWidgetProvider

It's 2020, and Widgets are once again all the rage after iOS finally added support for them. However, Android Widgets don't seem to have been updated since 2012.

From the Android docs:

A RemoteViews object (and, consequently, an App Widget) can support the following layout classes:

• FrameLayout
• LinearLayout
• RelativeLayout
• GridLayout

Which means, no ConstraintLayout, no RecyclerView, no AndroidX. I don't want to go back to the dark days of ListView.

Is the documentation on the Android developer site really still the best practice for developing Android Widgets today? Does anyone have experience with making Widgets in an AndroidX world? Is there any kind of 3rd party API to make the experience less painful?

The name 'Router' is defined in the libraries 'package:flutter/src/widgets/router.dart' and 'package:flutter_modular/src/routers/router.dart (via package:flutter_modular/flutter_modular.dart)'.\nTry using 'as prefix' for one of the import directives, or hiding the name from all but one of the imports."

This is my class right now:

I am developing Flutter Web Application.

The object is to reuse the same layout screen widget(Drawer, AppBar) for most of route screen.

I have tried create a new Scaffold class and add body widget to each screen.

The problem is every time I navigate to a new screen. There is a new (MyScaffold) created on the widget tree. So it is not good for performance.

I also tried to use nested router, the problem is nested router is not supported by url that I can not navigate to the screen by typing the URL.

Is there any other proper way to deal with this problem.

Thanks

Add the code example :

I'm trying to build a widget for my Android app and I'm running into the problem that while the ListView does find data (through the debugger I can see the getViewAt method in my RemoteViewFactory implementation is called and returning a proper RemoteViews), each entry found is simply shown in my widget as "Loading..."

For the record: there are indeed 4 entries found in my database and the getViewAt method is called four times, each time returning a proper list item.

I've based my code off the Android documentation, having used the StackView sample as technical reference.

In trying to fix this problem I've consulted stackoverflow and found some past questions. The most common suggestions for fixes are:

• Ensure the getViewTypeCount method returns a value other than 0 (usually 1, as most widgets will only use one view type);
• Ensure only supported views are used;
• A few more vague suggestions as some arbitrary view properties should or shouldn't be used.

I've tried all of the suggestions above and am using only supported views yet still my items aren't displayed. Does someone here have an idea?

A list of relevant code I've written:

Entries added to my AndroidManifest.xml file