tap | 易学教程

tap interface not coming up

阅读更多关于 tap interface not coming up

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I decided to add a tap interface and use it in my code , but I am able to get its state UP. sudo ip -f link tuntap add tap10 mode tap sudo ip link set tap10 up After this when I do "ip link" tap10: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast state DOWN qlen 500 link/ether 26:cc:d2:b4:37:ea brd ff:ff:ff:ff:ff:ff state DOWN: How to get this state UP ? I am trying to send packets to it and nothing is received . 回答1: It turns out that you need to have a proccess that uses your tap interface in order for it to be active. This

Tap to record like in vine using javacv

阅读更多关于 Tap to record like in vine using javacv

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I am trying to implement a tap to record feature like in vine. A sample for handling recording (not touch to record) provided in javacv is https://github.com/bytedeco/javacv/blob/master/samples/RecordActivity.java . I am trying to modify it so that in onPreviewFrame method frames are added to buffer only when user has his finger placed on screen. These frames are then tried to be combined into final video in stopRecording method. The issue is that if I set the timestamp as given in below code snippet (in stopRecording method) if (t >

iOS 9 Spritekit Double Tap Not Working on iPhone 6S

阅读更多关于 iOS 9 Spritekit Double Tap Not Working on iPhone 6S

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have been building a SpriteKit game for a while now. Its a card game that allows double-tap on card sprites for specific behaviors. Now that we're in iOS 9, double taps do not work at all on iPhone 6s. Works fine on iOS8, all devices. In my SKScene , i'm using the touchesBegan method to detect taps: -(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event { UITouch *touch = [touches anyObject]; CGPoint touchLocation = [touch locationInNode:self]; if(touch.tapCount==2) { NSLog(@"double-tap, but not for iPhone 6s"); } } Is there

Android - Detect doubletap AND tripletap on view

阅读更多关于 Android - Detect doubletap AND tripletap on view

I've been trying to build a tap detector that can detect both double and tripe tap. After my efforts failed I searched a long time on the net to find something ready to use but no luck! It's strange that libraries for something like this are so scarce. Any help ?? You can try something like this. Though I would generally recommend against using triple taps as a pattern as it is not something users are generally used to, so unless it's properly communicated to them, most might never know they can triple tap a view. Same goes for double taping actually on mobile devices, it's not always an

Android read JSONArray into a JSONArray [closed]

阅读更多关于 Android read JSONArray into a JSONArray [closed]

问题 Closed . This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 5 years ago . How can i read a json array that contains a json array this is my json { "product": { "name": "myApp", "config": [ { "grade": "elementary school", "courses": [ { "name": "Math", "teacher": "David" } ] } ] } } for example how can i read "config" and then courses, to generate a list

移动端click延迟和tap事件

阅读更多关于移动端click延迟和tap事件

一、click等事件在移动端的延迟 click事件在移动端和pc端均可以触发，但是在移动端有延迟现象。 1、背景由于早期移动设备浏览网页时内容较小，为了增强用户体验，苹果公司专门为移动设备设计了双击放大的功能，以确保用户可以方便地放大网页内容，但是当用户单击按钮的时候，移动设备需要延迟 Լ300ms 执行，以判断用户是否是要双击。 2、验证下面通过js代码来直观地验证click等事件的延迟 <div class="result">点我试试</div> 移动端时间响应原则：优先响应移动端独有事件。二、解决办法 1、使用touch事件模拟click事件如下使用touchstart和touched封装了一个移动端的tap事件可以直接调用idcast中tap方法。 2、使用zepto中已经封装好的tap事件直接调用 $(menuBox).on("tap",callback) zepto下载链接： https://github.com/madrobby/zepto 文章来源: 移动端click延迟和tap事件

CSS实战笔记(七) 全屏切换

阅读更多关于 CSS实战笔记(七) 全屏切换

index.html <!DOCTYPE html> <html> <head> <title>Full-Screen Toggle</title> <link type="text/css" rel="stylesheet" href="index.css" /> </head> <body> <div class="page-wrapper" id="page-wrapper"> <div class="page-content content-0"></div> <div class="page-content content-1"></div> <div class="page-content content-2"></div> </div> <div class="page-tap" id="page-tap" onclick="switchPage()"> <div class="side-tap tap-0" data-index="0"></div> <div class="side-tap tap-1" data-index="1"></div> <div class="side-tap tap-2" data-index="2"></div> </div> <div class="page-hint" id="page-hint" onclick=

npm install gives unauthorized name or password is incorrect error

阅读更多关于 npm install gives unauthorized name or password is incorrect error

When I try to install tap using npm install tap I get the following error: npm ERR! Error: unauthorized Name or password is incorrect.: tap Here's the entire response: npm http GET https://registry.npmjs.org/tap npm http 401 https://registry.npmjs.org/tap npm ERR! Error: unauthorized Name or password is incorrect.: tap npm ERR! at RegClient.<anonymous> (/usr/local/lib/node_modules/npm/node_modules/npm-registry-client/lib/request.js:253:14) npm ERR! at Request.init.self.callback (/usr/local/lib/node_modules/npm/node_modules/request/main.js:120:22) npm ERR! at Request.EventEmitter.emit (events

Detect hard taps anywhere on iPhone through accelerometer

阅读更多关于 Detect hard taps anywhere on iPhone through accelerometer

I am trying to detect the taps which could be anywhere on iPhone not just iPhone screen. Here is a link which shows that it is possible. Basically what i want to do is send an alert if user taps 3 times on iPhone while the Phone is in his pocket. What i have achieved is that i can detect the 3 taps but i also get the false alerts as well in these cases. 1) if user walking, 2) waving his phone 3) running. I need to just check if user has hit his iPhone 3 times. Here is my code. - (void)accelerometer:(UIAccelerometer *)accelerometer didAccelerate:(UIAcceleration *)acceleration { if (handModeOn =

webpack4.0各个击破（8）—— tapable篇

阅读更多关于 webpack4.0各个击破（8）—— tapable篇

webpack 作为前端最火的构建工具，是前端自动化工具链最重要的部分，使用门槛较高。本系列是笔者自己的学习记录，比较基础，希望通过问题 + 解决方式的模式，以前端构建中遇到的具体需求为出发点，学习 webpack 工具中相应的处理办法。（本篇中的参数配置及使用方式均基于 webpack4.0版本）一. tapable概述 tapable 地址：【tapable-0.2】 tapable 是 webpack 的核心框架（4.0以上版本的API已经发生了变化），是一个基于事件流的框架，或者叫做发布订阅模式，或观察者模式， webpack 的整个生命周期及其开放的自定义插件系统都离不开 tapable 的支持，研究其运行原理是阅读 webpack 源代码的第一步。官方仓库 master 分支的代码是经过ES6重构的，模块化拆分非常细，且加入了很多非核心逻辑，阅读难度较大。建议先从官方仓库中0.2版本的分支开始学习，整个源码只有400行，相对容易理解。二. tapable-0.2源码解析 2.1 代码结构 //类定义 function Tapable() { this._plugins = {}; } //模块导出 module.exports = Tapable; //定义了许多内部方法和原型方法 ... Tapable 实际上就是一个类定义的模块。 2.2

订阅 tap