Flutter

问题 [EDITED] I want to create an application that discourages the usage of social media applications. Like if they open Instagram or something then the Flutter app will know. How would I detect if another application (Such as Instagram or Twitter) is open when my Flutter app is opened? If this is difficult to implement in Flutter, can anyone suggest some other languages or code for this functionality? Thanks!! 回答1: It is possible at least on Android. I do not program for IOS so I can't say for

问题 I wrote some native android code in java, which I need for my app build in flutter. In this code, I schedule notifications using PendingIntent . When I run the code when editing the android part (opening the android folder in android studio and running app ), my notifications show and work like expected. However, when I open the dart/flutter part of my app and run main.dart my all functionality to do with PendingIntent s breaks. A strange artifact in this is that it only seems to happen on

问题 I wrote some native android code in java, which I need for my app build in flutter. In this code, I schedule notifications using PendingIntent . When I run the code when editing the android part (opening the android folder in android studio and running app ), my notifications show and work like expected. However, when I open the dart/flutter part of my app and run main.dart my all functionality to do with PendingIntent s breaks. A strange artifact in this is that it only seems to happen on

问题 I wrote some native android code in java, which I need for my app build in flutter. In this code, I schedule notifications using PendingIntent . When I run the code when editing the android part (opening the android folder in android studio and running app ), my notifications show and work like expected. However, when I open the dart/flutter part of my app and run main.dart my all functionality to do with PendingIntent s breaks. A strange artifact in this is that it only seems to happen on

问题 I wrote some native android code in java, which I need for my app build in flutter. In this code, I schedule notifications using PendingIntent . When I run the code when editing the android part (opening the android folder in android studio and running app ), my notifications show and work like expected. However, when I open the dart/flutter part of my app and run main.dart my all functionality to do with PendingIntent s breaks. A strange artifact in this is that it only seems to happen on

问题 I wrote some native android code in java, which I need for my app build in flutter. In this code, I schedule notifications using PendingIntent . When I run the code when editing the android part (opening the android folder in android studio and running app ), my notifications show and work like expected. However, when I open the dart/flutter part of my app and run main.dart my all functionality to do with PendingIntent s breaks. A strange artifact in this is that it only seems to happen on

问题 I wrote some native android code in java, which I need for my app build in flutter. In this code, I schedule notifications using PendingIntent . When I run the code when editing the android part (opening the android folder in android studio and running app ), my notifications show and work like expected. However, when I open the dart/flutter part of my app and run main.dart my all functionality to do with PendingIntent s breaks. A strange artifact in this is that it only seems to happen on

问题 I am trying to develop a UDP application that receives data and converts the bytes into different data types. I have the code below that works when using Dart on its own. import 'dart:io'; import 'dart:typed_data'; import 'dart:mirror'; RawDatagramSocket.bind(InternetAddress.ANY_IP_V4, 20777).then((RawDatagramSocket socket){ socket.listen((RawSocketEvent e){ Datagram d = socket.receive(); if (d == null) return; ByteBuffer buffer = d.data.buffer; DKByteData data = new DKByteData(buffer); exit

问题 I am trying to develop a UDP application that receives data and converts the bytes into different data types. I have the code below that works when using Dart on its own. import 'dart:io'; import 'dart:typed_data'; import 'dart:mirror'; RawDatagramSocket.bind(InternetAddress.ANY_IP_V4, 20777).then((RawDatagramSocket socket){ socket.listen((RawSocketEvent e){ Datagram d = socket.receive(); if (d == null) return; ByteBuffer buffer = d.data.buffer; DKByteData data = new DKByteData(buffer); exit

问题 I want to create a class in flutter for displaying an Alert Box, which can take in title and Content as input to show error box. But debug console says that "can't access this in a field initializer" when I used this to access a variable of the same class in AlertDialog(). import 'package:flutter/material.dart'; void main() => runApp(MaterialApp(home: Alert("Say Hy","Hy"),)); class Alert extends StatelessWidget{ final String titlea; final String contexta; Alert(this.titlea,this.contexta);