New post on /r/flutterdev subreddit:

Do we need a better way to write REST API clients (my approach provided)?
I'm developing my first Flutter app after many years as Android dev. I found that developing REST API client requires quite a lot of utility code around awesome http.get()/post(). I don't want to reinvent the wheel so asking if there is library to fulfill simple requirements. I want:to have option to print all requests/responses for debug purposes;to have an easy way to decode json response into an specific object;to handle API errors as call result (all non 2xx responses) where result is decoded json error response as custom object;to handle network errors as a call result (avoid using catch block);to use type safety as much as possible;Because I couldn't find handy lib, I come up with the solution where each API call can be constructed like this

 Future<ApiResult<Client>> addClient(String name) { return post( "/api/clients", payload: {"name": name}, resultFactory: (json) => Client.fromJson(json), ); } 

The result of API call is always an object: Success<T>, ApiError or NetError (all extending ApiResult).And on the caller side (with additional help of ApiResult.verify()) it looks as simple as this

Success<Client> result = (await _api.addClient(newClientName)).verify( // e.g. show dialog with error response from the server apiErrorHandler: (apiError) => ..., // e.g. provide retry button while on spotty network netErrorHandler: (netError) => ..., ); if (result == null) return; // at this point I can be sure request succeeded and Client object can be safely consumed as result.data 

No rocket science here, just a more friendly API to construct, debug and consume REST API.Should I extract this approach to the library or I'm doing all this wrong and there is more flutter/dart idiomatic way to deal with all that stuff?Appreciate your responses.

February 13, 2019 at 09:41PM by pilgr
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February 13, 2019 at 09:37PM by impatientdeveloper
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New post on /r/flutterdev subreddit:

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February 13, 2019 at 10:12PM by Vanethos
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New post on Flutter Dev Google group:

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February 14, 2019 at 01:59AM by Brennan Altringer
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February 14, 2019 at 07:49AM by ishanfx
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February 14, 2019 at 09:47AM by ishanfx
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February 14, 2019 at 12:05PM by gigab_te
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New post on Flutter Dev Google group:

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February 14, 2019 at 04:12PM by Esen
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[HELP Needed] How to pause flutter video(video_player plugin) when navigating from page to another.
I'm using flutter video_player(https://pub.dartlang.org/packages/video_player) plugin to play videos. But When I navigate from one page to another in flutter the video is still playing. I'm having the same problem when playing music from any other app(eg: playing music from notification while flutter video is playing). How can I pause it?

February 14, 2019 at 03:14PM by divyanshub024
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New post on Flutter Dev Google group:

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February 14, 2019 at 05:06PM by Pooja Patel
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New post on Flutter Dev Google group:

build ios
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February 14, 2019 at 05:46PM by Kero Atef
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New post on /r/flutterdev subreddit:

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February 14, 2019 at 06:42PM by impatientdeveloper
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New post on /r/flutterdev subreddit:

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February 14, 2019 at 06:23PM by burhanrashid52
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New post on /r/flutterdev subreddit:

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February 14, 2019 at 07:47PM by RobertBrunhage
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New post on /r/flutterdev subreddit:

Are Flutter apps easy to maintain and easy to change?
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February 14, 2019 at 07:40PM by refine_and_refine
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New post on /r/flutterdev subreddit:

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February 14, 2019 at 08:16PM by levs0812
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New post on /r/flutterdev subreddit:

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February 14, 2019 at 08:38PM by bitcoin-wiz
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February 14, 2019 at 10:02PM by Dshah H
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New post on /r/flutterdev subreddit:

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February 14, 2019 at 10:31PM by Purple_Pizzazz
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New post on /r/flutterdev subreddit:

"Best" way to update ListView with data coming in from mqtt
I am new to Flutter. I am finding all the various ways to handle state changes quite rich but a bit daunting. I am hoping some kind person will point me to what would be "the best" path to take given this scenario. I have devices that publish to an mqtt broker. In my Flutter app, I have successfully been able to subscribe and receive updates from the broker. Now I want to update a Flutter UI widget. I assume for the UI to use StreamBuilder. The tricky part for me is construction of the stream to put in the stream property. Do I need to use an event channel, Some other Stream mechanism that can be instantiated when the mqtt subscribe callback is called with data? Thank you.

February 14, 2019 at 11:50PM by m_k_johnson
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