dart

MissingPluginException(No implementation found for method init on channel plugins.flutter.io/google_sign_in) after publishing to Google Play Store

由 女生的网名这么多〃 提交于 2021-02-05 07:31:50
问题 I asked a similar question before, but I am having trouble with Google Sign-in after publishing my app to internal and closed testing on the Play store. It works perfectly well on emulators for both Android and iOS, works great on real devices when I run it from my computer in debug and release modes, but once published to the Play store, everything breaks. The error I get is MissingPluginException(No implementation found for method init on channel plugins.flutter.io/google_sign_in) Is there

Error initializing ADB: Debug Bridge not found

由 ぐ巨炮叔叔 提交于 2021-02-05 07:10:44
问题 I want to work with some files in flutter and so I wanted to use the Android Studio Device File Explorer to check if everything works correctly. But the Device File Explorer shows a red warning "Error initializing ADB: Android Debug Bridge not found" On a "normal" Android Project with Java there is no Problem and everything is displayed correctly. I reinstalled Android Studio, changed the AVD but nothing changed. Is this a bug in Flutter or Android Studio? Thanks for helping. 回答1: Ok, I

Dart Firestore add to array

由 有些话、适合烂在心里 提交于 2021-02-05 07:10:25
问题 I'm writing a Flutter app and am trying to add an element to an array. I'm trying to follow the example here: https://firebase.google.com/docs/firestore/manage-data/add-data#update_elements_in_an_array - however, My DocumentReference object does not have an update object: So, how do I go about adding an element to an array in this document? For reference, I'm using the cloud_firestore: 0.12.1 dependency. 回答1: The method you should use is updateData(). You pass to it a map. Here is an example

How to convert list<String> into String in Dart without iteration?

由 被刻印的时光 ゝ 提交于 2021-02-04 16:51:07
问题 Is there a method in Dart like the String.join() method in Java & c#? input: nums: ["20", "3005", "2"] output: nums = "2030052" 回答1: join is a method of the List class, rather than String: List<String> yourList = ["20", "3005", "2"]; // To test that the above the above yourList.join() == '2030052'; // true yourList.join(',') == '20,3005,2'; // true, with "," delimiter 回答2: This might not be the best solution, but you can reduce a collection to a single value by iteratively combining elements

How to convert list<String> into String in Dart without iteration?

由 Deadly 提交于 2021-02-04 16:50:01
问题 Is there a method in Dart like the String.join() method in Java & c#? input: nums: ["20", "3005", "2"] output: nums = "2030052" 回答1: join is a method of the List class, rather than String: List<String> yourList = ["20", "3005", "2"]; // To test that the above the above yourList.join() == '2030052'; // true yourList.join(',') == '20,3005,2'; // true, with "," delimiter 回答2: This might not be the best solution, but you can reduce a collection to a single value by iteratively combining elements

How to access to element of a class by string name in flutter

由 不羁的心 提交于 2021-02-04 08:26:57
问题 I get name of font awesome from api that I want to access element of font_awesome_flutter package but I know it in C# but I do not know in flutter: received from server: { "fontawesomeName":"breadSlice" } in font_awesome package I can access its element by below IconButton( icon: FaIcon(FontAwesomeIcons.breadSlice), onPressed: () { print("Pressed"); } ) But How do I access element of object with string name in flutter? 回答1: This is not possible in Flutter because reflection is disabled. The

Matching Unicode letters with RegExp

由 别来无恙 提交于 2021-02-04 07:00:07
问题 I am in need of matching Unicode letters, similarly to PCRE's \p{L} . Now, since Dart's RegExp class is based on ECMAScript's, it doesn't have the concept of \p{L} , sadly. I'm looking into perhaps constructing a big character class that matches all Unicode letters, but I'm not sure where to start. So, I want to match letters like: foobar מכון ראות But the R symbol shouldn't be matched: BlackBerry® Neither should any ASCII control characters or punctuation marks, etc. Essentially every letter

Flutter中极光推送的使用----jpush_flutter

由 ≡放荡痞女 提交于 2021-01-30 08:11:53
原文地址：https://www.cnblogs.com/niceyoo/p/11095994.html 1、申请极光账号和建立应用 极光推送的官方网址为：https://www.jiguang.cn/ 注册好后，进入'服务中心',然后再进入'开发者平台'，点击创建应用。 这时候会出现新页面，让你填写“应用名称”和上传“应用图标”。 创建完成，极光平台就会给我们两个key。 appKey : 移动客户端使用的key Master Secret ： 服务端使用的key 我们这里只做移动端不做服务端，所以只需要appKey。得到这个Key也算是极光平台操作完了 2、加入dependencies依赖 github网址:https://github.com/jpush/jpush-flutter-plugin 要使用极光推送插件必须先下载包，要下载包就需要先添加依赖，直接把下面的代码加入pubspec.yaml文件中。 jpush_flutter: 0 .0 .11 写完代码后，选择Android Studio右上角的Packages get进行下载，下载完成后进行操作。 3、build.gradle添加可以和cpu型号代码 打开android/app/src/build.gradle文件，加入如下代码： defaultConfig { applicationId "sscai.club

How to make server know what data to send depending on fingerprint flutter?

由 Deadly 提交于 2021-01-29 22:05:16
问题 I want to replace the login to the app from username and password to fingerprint in flutter, so the user when have successful fingerprint he will see his information in the application (this information send from server). How I can manage that I want some thing to make this fingerprint connected with this user to get correct data from server ?. I use local_auth for fingerprint authentication but I have no idea to tell server this fingerprint is associated for this user. I read some thing like

The Google Mobile Ads SDK was initialized incorrectly. AdMob publishers should follow the instructions here:

由 梦想的初衷 提交于 2021-01-29 19:57:46
问题 Launching lib/main.dart on sdk gphone x86 arm in debug mode... Running Gradle task 'assembleDebug'... ✓ Built build/app/outputs/flutter-apk/app-debug.apk. Installing build/app/outputs/flutter-apk/app.apk... E/AndroidRuntime(11877): FATAL EXCEPTION: main E/AndroidRuntime(11877): Process: com.example.truthfxac, PID: 11877 E/AndroidRuntime(11877): java.lang.RuntimeException: Unable to get provider com.google.android.gms.ads.MobileAdsInitProvider: java.lang.IllegalStateException: E/AndroidRuntime
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