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New post on /r/flutterdev subreddit: firebase flutter can anyone explain this code please ?​var data=db.collection('name of collection').getDocuments();if(data!=null){details=data.documents.map( (document)=>nameOfClass.fromMap(document) ).toList();​okay first one we fetch documents from it that is fine with me but second one​​why write documents ? we have documents from first line ?function map how take this callback function ? what is document ?how return it key value pairThank you so much March 16, 2021 at 02:37PM by SolidSize1433 https://ift.tt/3vwH93G

New post on /r/flutterdev subreddit: Flutter: Realtime API data fetch I came across to this one solution where we need to use Timer() in order to fetch the changes over time and add to stream controller. Just a simple question, does this method will consume more internet usage for the user?Because, even the API data does not have new value, the apps still will fetch the API when the period in Timer() reach, which I consider this is just waste of process and internet usage.​link to stackoverflow : https://stackoverflow.com/questions/66653346/flutter-realtime-api-data-fetch March 16, 2021 at 11:32AM by sangkaraka https://ift.tt/3tmRBJ2

New post on /r/flutterdev subreddit: Backend and map recommendation for app like uber So I'm making an app like uber and i wanted your recommendations for a backend database and map considering lower costs Thanks March 16, 2021 at 11:34AM by ihs_ahm https://ift.tt/3czr6tf

New post on /r/flutterdev subreddit: How to Add Divider Between Each Line in Flutter? https://ift.tt/3bT85mu March 16, 2021 at 10:16AM by lil_dragplix https://ift.tt/3cCO6ax

New post on /r/flutterdev subreddit: Is Flutter 2.0 capable of supporting a real mobile solution migration approach? My team wants to migrate away from a large native mobile app toward a complete flutter solution. What I read about add-to-app being limited to a single module and no new maturity of support in 2.0. I dont see how such a migration is possible (replace a native feature one at a time until we have a full flutter app). Is this limitation still there in 2.0? If so, I dont see how flutter can become a real approach for mobile teams to embrace such a framework. The risk to move to it is still too high. If it is true, shouldnt this be a major focus for the project? March 16, 2021 at 10:18AM by RavenRIP https://ift.tt/3vvZYUE

New post on /r/flutterdev subreddit: Firebase Pricing Example im trying to understand the firebase pricing model and I stumbled over this. https://firebase.google.com/docs/firestore/pricingQueries other than document reads For queries other than document reads, such as a request for a list of collection IDs, you are billed for one document read. If fetching the complete set of results requires more than one request (for example, if you are using pagination), you are billed once per request.Let's say Im fetching 10 profiles from a profiles collection (10.000 documents) randomly limit(10) it would cost me 10 reads.

return FirebaseFirestore.instance .collection('profiles') .limit(10) .get() .then(...) 

Now I want to show my 10 results in the UI and I also want to show the clients a heart icon which is filled if the client liked the profile or not. I would fetch the user data and check if the user liked one of the 10 profiles. I already learned storing the user specific data in the same collection profiles doesn't make sense, lets say we are saving it in a users collection subcollection called profilelikes:

return FirebaseFirestore.instance .collection('users') .doc('userId') .collection('profilelikes') .get() .then((QuerySnapshot querySnapshot) => { querySnapshot.docs.forEach((doc) { if () { // check if profiles from list matches userprofile document } }) }); 

What does it mean for this case exactly? Lets say the user has 5000 documents inside the profilelikes Im searching in 5000 documents if 10 of them are matching or not. Let's say 2 of them are matching:How many costs do we have here?First Query: 10 reads because we have 10 results here Second Query: ??? March 16, 2021 at 09:55AM by md186 https://ift.tt/3bPsGYx

New post on /r/flutterdev subreddit: How to Share an Image on iOS and Android using Flutter?? https://ift.tt/3qV4ecG March 16, 2021 at 06:19AM by lil_dragplix https://ift.tt/2Nltv1Y

New post on Flutter Dev Google group: webview_flutter is not working hello there! I want to open a web page through web view and used *webview_flutter*: ^2.0.2 plugin for that but getting error on *javascriptMode *as The named parameter 'javascriptMode' is not defined. Can anyone point me in the right direction? March 16, 2021 at 06:38AM by Raman Plaha https://ift.tt/3tm11Ve

New post on /r/flutterdev subreddit: Why should you use isolates in Flutter? https://ift.tt/2P12gtS March 16, 2021 at 05:59AM by cheerfulboy https://ift.tt/3eJtGj6

New post on Flutter Dev Google group: Phone Authentication in Web My app uses phone authentication and work perfect on Android but doesn't work on Chrome. Don't know where is the problem? March 16, 2021 at 06:00AM by Haider Ali https://ift.tt/2Q9GWDl

New post on /r/flutterdev subreddit: Deploying flutter web app to firebase with a custom domain https://ift.tt/3toghAR March 16, 2021 at 05:06AM by PanicRescue https://ift.tt/38M98Tf

New post on /r/flutterdev subreddit: Neumorphic Calculator In Flutter | Flutter Tutorial For Beginners https://youtube.com/watch?v=eOkD8KrTU-I March 15, 2021 at 08:08PM by backslashflutter https://ift.tt/3qQR0xq

New post on /r/flutterdev subreddit: Support young developer Hi I'm Luan.I had just completed my first flutter project and am happy to announce that it is available on the google play store. It is a simple habit tracker, so no, not a task list app that we see regularly on the store. I wanted something to help me do challenges this year to change my lifestyle and I believe I made an app perfect for that. It keeps track of streaks and other important info. You can even set a daily goal to help with motivation. It is completely free and has a nice modern UI. If you don't have a idea of a challenge to do then no worries as the app has a random challenge section that gives you a random challenge and a time period (which you can change, of course).If you have the time to support me I would appreciate it very much. Leaving a positive review would be the icing on the cake!You can check it out on: https://play.google.com/store/apps/details?id=com.luan.newchallengerappThank you. March 15, 2021 at 08:57PM by Expert-Oven-9489 https://ift.tt/3bUdnOF

New post on /r/flutterdev subreddit: Push (Flutter Developer Story) https://youtube.com/watch?v=0LqTlDXtzg4&feature=share March 15, 2021 at 06:05PM by Pixelreddit https://ift.tt/3vpCeBn

New post on /r/flutterdev subreddit: Authentication (16) - Movie App | Industry Standard | Dev to Publish https://youtu.be/pojC3NCLVO8 March 15, 2021 at 06:58PM by prateeksharma1712 https://ift.tt/3tnVspf

New post on /r/flutterdev subreddit: What Is Going On With firebase_admob? I can't find it on Pub.dev anymore and it hasn't been updated to use null safety.I know Google Ads was released with Flutter 2 so my immediate thought is that it has been deprecated but I haven't been able to confirm this anywhere. March 15, 2021 at 07:03PM by azuredown https://ift.tt/38HCPoy

New post on Flutter Dev Google group: Flutter 2.0.1, 2.0.2 hotfixes released to the stable channel Friends, Last week we neglected to inform you that we released two hotfixes to the stable channel. I personally apologize to you for this; it was my oversight. Here’s the list of changes: Flutter 2.0.2 This fixes the following issues in the framework and Dart. No fixes were applied to March 15, 2021 at 06:31PM by Ray Rischpater https://ift.tt/3lkjJJV

New post on /r/flutterdev subreddit: groovin_widgets has joined the null safety gang https://ift.tt/2N84Zkg March 15, 2021 at 05:26PM by GroovinChip https://ift.tt/38Hzy8p