Firestore onSnapshot duplicates all DOM elements instead of replacing/updating them
来源： https://stackoverflow.com/questions/58276148/firestore-onsnapshot-duplicates-all-dom-elements-instead-of-replacing-updating-t
snapshot
Snap shot is not working?
问题 I am new to mobile programming. I am working in H264 video rendering in iOS application using VideoToolBox framework. It has one feature to take snapshot while rendering the video. Whenever I take a snapshot, I get the Black screen only. I tried this 1. renderInContext, 2. drawViewHierarchyInRect, 3. snapshotViewAfterScreenUpdates method to capture the rendering the video but returns a Black screen only. //snapshot coding UIGraphicsBeginImageContextWithOptions (self.view.bounds.size, YES, 0.0
Snap shot is not working?
问题 I am new to mobile programming. I am working in H264 video rendering in iOS application using VideoToolBox framework. It has one feature to take snapshot while rendering the video. Whenever I take a snapshot, I get the Black screen only. I tried this 1. renderInContext, 2. drawViewHierarchyInRect, 3. snapshotViewAfterScreenUpdates method to capture the rendering the video but returns a Black screen only. //snapshot coding UIGraphicsBeginImageContextWithOptions (self.view.bounds.size, YES, 0.0
Snap shot is not working?
问题 I am new to mobile programming. I am working in H264 video rendering in iOS application using VideoToolBox framework. It has one feature to take snapshot while rendering the video. Whenever I take a snapshot, I get the Black screen only. I tried this 1. renderInContext, 2. drawViewHierarchyInRect, 3. snapshotViewAfterScreenUpdates method to capture the rendering the video but returns a Black screen only. //snapshot coding UIGraphicsBeginImageContextWithOptions (self.view.bounds.size, YES, 0.0
jest snapshot testing: how to ignore part of the snapshot file in jest test results
问题 Problem: ignore some part of the .snap file test results the question here: there are some components in my test that have a random values and i don't really care about testing them. is there any way to ignore part of my X.snap file? so when i run tests in the future it won't give me test fail results. 回答1: Now you can also use property matcher for these cases. By example to be able to use snapshot with these object : const obj = { id: dynamic(), foo: 'bar', other: 'value', val: 1, }; You can
Firebase child query coming up nil after deleting a key then adding it back
问题 I run the code below and using print statements the Database is saying the children are null But in the Database there is definitely something there: The only thing I can think of is I let a user delete a message (by deleting the -LoyeLv.. . key) but if they want to add it back they can. I keep a copy of the deleted key and just send it back to the database so that the message in still in sync. The only problem with that is even when I don't do it (as in my example) and I delete the message,
Android Webview: Detect when rendering is finished
问题 I want to snapshot the WebView after the WebView is loaded. However, the returned bitmap is always null because the render hasn't loaded completed even though I use onPageFinished . I search on Internet and people suggest to use WebView.PictureListener , but this function is deprecated in API 12 . Some codes public class MainActivity extends Activity { private WebView mButterflyWebView; /** * Gets html content from the assets folder. */ private String getHtmlFromAsset() { InputStream is;
Geting data from mysql to StreamBuilder Flutter
问题 I have an assignment and I have to take data from mysql server into a flutter and pass it to StreamBuilder and I was trying to use the same class we are using it in firebase and now I have problem with passing the data that I already take it from the server into the StreamBuilder and as I remember I have to use a different type of snapshot, any help. import 'package:flutter/material.dart'; import 'package:http/http.dart' as http; import 'dart:convert'; void main() => runApp(MyApp()); class
UI testing fails with error “Failed to get snapshot within 15.0s”
问题 I am having a table view with a huge amount of cells. I tried to tap a particular cell from this table view. But the test ending with this error: Failed to get snapshot within 15.0s I assume that, the system will take snapshot of the whole table view before accessing its element. Because of the huge number of cells, the snapshot taken time was not enough (15 secs is may be the system default time). I manually set the sleep time / wait time (I put 60 secs). Still I can not access the cells
Maven Jar包制作与上传及基本使用
本文主要为以后Dubbo分布式系统搭建做准备 之前早的时候，仅使用Nexus OSS搭建Maven私服，并上传Maven仓库中没有的第三方Jar包，也上传过自己制作的Jar包。但是那会并没有考虑上传 javadoc 和 source 包。 概要 新建Maven项目 整体结构如下 ➜ core-api tree . ├── core-api.iml ├── pom.xml ├── src │ ├── main │ │ ├── java │ │ │ └── cn │ │ │ └── lpe234 │ │ │ └── demo │ │ │ ├── models │ │ │ │ └── User.java │ │ │ └── services │ │ │ └── UserService.java │ │ └── resources │ └── test │ └── java pom.xml 示例如下 <?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0