Flutter

问题 I am using phone verification in my flutter app. My goal is to have the following flow: 1. user enters phone number 2. user is sent verification code 3. user enters code and is signed in. On android, that is the flow I get. On ios, however, it goes 1. user enters phone number 2. reCAPCHA page opens to make sure I'm not a robot 3. user is sent verification code 4. user enters code and is signed in (this happens on ios emulator). I want to get rid of the reCAPCHA page. Some people recommended

问题 I'm trying to use Google Oboe for a 3D audio processing app due to it's low latency. The app will have a C++ backend, which does the processing, and the frontend is done with Flutter. I'm running a couple of tests to see if it'll work but I'm having issues loading assets from Flutter to Oboe. I checked the example RhythmGame in Oboe's repo, done with Java, but couldn't quiet find a way of doing that straight from Dart to C++. The connection between front and backend is through dart::ffi Here

问题 I have a settings menu with 8 listTiles and If I turn on one of the switches, the issue is - when I click on the back button and click on the settings menu again, the switch is turned off ... what would I have to add to make sure the switch is on even if the back button is clicked? After this- what ever switch is turned on that's the color image I want to display in another class ..... that is why I need to ensure only one switch is on at one time, and that once the user clicks the back

问题 Hi i got stuck while write flutter code on dropdown button, where after user choosed from the list the hint wont changed to what the user choose. Can anyone help ? So here is my code: DropdownButton(items: [ DropdownMenuItem(value: "1", child: Text('+')), DropdownMenuItem(value: "2", child: Text('-')), DropdownMenuItem(value: "3", child: Text('X')), DropdownMenuItem(value: "4", child: Text('/')) ].toList(), onChanged: (value){ setState(() { _value = value; }); },hint: Text('Operation'),) 回答1:

问题 I have restored some information in a file named "cities.db", and I put it in project path "/assets", could you tell me how to get it? After I have installed the app, I can find the file in path "/data/data/pkgName/code_cache/xxx/xxx/build/flutter_assets/assets/cities.db". if I use this method, var databasesPath = await getDatabasesPath(); String path = join(databasesPath, 'cities.db'); Database _db = await openDatabase(_path); I can find an empty db file in path "/data/data/pkgName/databases

问题 I have restored some information in a file named "cities.db", and I put it in project path "/assets", could you tell me how to get it? After I have installed the app, I can find the file in path "/data/data/pkgName/code_cache/xxx/xxx/build/flutter_assets/assets/cities.db". if I use this method, var databasesPath = await getDatabasesPath(); String path = join(databasesPath, 'cities.db'); Database _db = await openDatabase(_path); I can find an empty db file in path "/data/data/pkgName/databases

问题 I have a document with the following structure: { "email" : "a@gmail.com", "value" : 100, "children" : [ { "email" : "b@gmail.com", "value" : 100 }, { "email" : "b@gmail.com", "value" : 200 } ] } I want to remove all elements with the email b@gmail.com from the children array. I am able to remove one item if I pass the whole object to be removed like this: FieldValue.arrayRemove(childObject) But I want both the objects with the email b@gmail.com to be removed. Is there anyway to achieve this

问题 Using Flutter, I would like to get device information details such as CPU count, bitness, Total Memory, Total device storage, etc. Similar to apps one can get on the App stores. I looked at device_info package, but that does not cover it. I also looked at system_info (which is pretty good, seems abandoned), but only works on Android since it's using Linux shell commands to get the info. I would also like it to work for iOS. Any ideas? 回答1: Add this package to your pubspec.yaml: system_info:

问题 Using Flutter, I would like to get device information details such as CPU count, bitness, Total Memory, Total device storage, etc. Similar to apps one can get on the App stores. I looked at device_info package, but that does not cover it. I also looked at system_info (which is pretty good, seems abandoned), but only works on Android since it's using Linux shell commands to get the info. I would also like it to work for iOS. Any ideas? 回答1: Add this package to your pubspec.yaml: system_info:

问题 Using Flutter, I would like to get device information details such as CPU count, bitness, Total Memory, Total device storage, etc. Similar to apps one can get on the App stores. I looked at device_info package, but that does not cover it. I also looked at system_info (which is pretty good, seems abandoned), but only works on Android since it's using Linux shell commands to get the info. I would also like it to work for iOS. Any ideas? 回答1: Add this package to your pubspec.yaml: system_info: