dart

Flutter Dart: HTTP read does not retrieve full html from given URL

由 有些话、适合烂在心里 提交于 2021-02-11 15:33:06
问题 I am currently using http.read() in order to retrieve the raw html of a given URL. I use Safari's "Inspect Element" feature to compare the result. I used this code and Google's webpage to test: http.read("https://www.google.com/?client=safari").then((html) { print(html); }); The result printed was: <!doctype html><html itemscope="" itemtype="http://schema.org/WebPage" lang="en"><head><meta content="Search the world's information, including webpages, images, videos and more. Google has many

How to use python code with Flutter application?

由 自作多情 提交于 2021-02-11 15:32:14
问题 I wanna to make a chatbot app with fluter, so i will use flutter only to create the user interface, and i wanna to interact my flutter app with python, so i will receive the question from flutter app and i will send it to python function, and this function should return the answer , and in flutter i will display it to the screen. Hint: 1- I made the UI with flutter. 2- I created python function "It uses Neural Network". 3- I wanna to use python as a function only, i will pass the questions to

Flutter: How to access array data inside a Map?

由 时光总嘲笑我的痴心妄想 提交于 2021-02-11 15:17:47
问题 I am developing a Flutter app and I am getting a JSON data like below {chat_mode: supplier, timestamp: 1605852885271, last_message: Test, members: [K9ioYyiEUQVVNjx0owwsABCD, K9ioYyiEUQVVNjx0owwsaXYZ]} I need to access each individual element under members and this is what I tried. Map<dynamic, dynamic> map = snapshot.value; print(map["members"]); The above allows me to access the entire array, not each record. But i can't access the individual element by using something like map["members"][0]

Dart/Flutter Not converting local date time to UTC correctly

由 梦想的初衷 提交于 2021-02-11 15:14:30
问题 I am building a flutter/firebase chat app and storing timestamps of messages in UTC. I am using this line of code to convert local time to UTC. 'time': DateTime.now().toUtc().toString(), When I tested this with two users one is in Virginia, US, and the other one in Sri Lanka. The timestamp of the user in Sri Lanka is converted correctly to UTC, but for user in Virginia time is correct but the date as of yesterday. Sri Lanka Time: 2020-06-21 20:50:48 UTC converted: 2020-06-21 15:20:48.027446Z

Flutter - How to Show Today, Tommorow after comparing the date in db with present date?

由 ♀尐吖头ヾ 提交于 2021-02-11 15:08:39
问题 Show day for ex:- today, tommorow, 28 Dec 2020 etc after comparing date from sqlite db in a list tile with present date. And also delete a particular item from list on app start if the day was yesterday. In present it is showing like 21-11-2020 and if the date has expired also it still continues to show. This is my Code List<Note2> items2 = new List(); DatabaseHelper2 db2 = new DatabaseHelper2(); db2.getAllNotes2().then((notes2) { setState(() { notes2.forEach((note2) { items2.add(Note2

Can't pick image from gallery

由 丶灬走出姿态 提交于 2021-02-11 15:08:06
问题 I am coding an application for recognizing plant species. I want to pick an image and show that on screen but i can't. Image returns null. Although i choose photo from gallery, it still says "no image selected". I also added read_external_storage permission to android manifests. import 'dart:io'; import 'package:tflite/tflite.dart'; import 'package:flutter/material.dart'; import 'package:image_picker/image_picker.dart'; class PlantSpeciesRecognition extends StatefulWidget { var model;

Flutter - How to Show Today, Tommorow after comparing the date in db with present date?

由 回眸只為那壹抹淺笑 提交于 2021-02-11 15:04:38
问题 Show day for ex:- today, tommorow, 28 Dec 2020 etc after comparing date from sqlite db in a list tile with present date. And also delete a particular item from list on app start if the day was yesterday. In present it is showing like 21-11-2020 and if the date has expired also it still continues to show. This is my Code List<Note2> items2 = new List(); DatabaseHelper2 db2 = new DatabaseHelper2(); db2.getAllNotes2().then((notes2) { setState(() { notes2.forEach((note2) { items2.add(Note2

Flutter - How to format title and body of notification in background?

由 百般思念 提交于 2021-02-11 15:01:42
问题 I am trying to display localized notification in flutter using firebase_messaging, I am getting a json with 3 language strings in body of a notification like so: {"it": "italian text", "de": "german text", "en": "english text"} As of now, it is showing the whole json string in the notification tray. How can I select the appropriate language text from the json and show in notification when app is in background? myBackgroundMessageHandler this function is never called. Thanks. 回答1: I could not

Android resource linking failed Flutter

由 杀马特。学长 韩版系。学妹 提交于 2021-02-11 15:01:34
问题 I am running into this weird issue where I am getting this error. FAILURE: Build failed with an exception. * What went wrong: Execution failed for task ':app:processDebugResources'. > A failure occurred while executing com.android.build.gradle.internal.tasks.Workers$ActionFacade > Android resource linking failed C:\Users\live\project_backup\build\file_picker\intermediates\library_manifest\debug\AndroidManifest.xml:9:5-15:15: AAPT: error: unexpected element <queries> found in <manifest>. * Try

Connecting Flask Socket.IO Server and Flutter

由 。_饼干妹妹 提交于 2021-02-11 14:59:50
问题 Basically, I have a socket io flask code: import cv2 import numpy as np from flask import Flask, render_template from flask_socketio import SocketIO, emit from threading import Lock,Timer as tmr from engineio.payload import Payload import base64 from PIL import Image import io app = Flask(__name__) app.config['SECRET_KEY'] = 'secret!' socketio = SocketIO(app) @socketio.on('connect') def connect(): print("a client connected") @socketio.on('disconnect') def disconnect(): print('Client
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