mobile

问题 I was running some FireBase tests and suddenly I realized Firebase was not working anymore when using mobile data from Chile. At the beginning I thought the problem was my app so I tried to open a Firebase official example but I had no luck (office-mover-demo example). This is what I tried: I connected the phone to my home wifi connection and FireBase works :) I shared the phone’s internet connection to my computer and it did not work :( . This is the error y receive. I emailed Firebase

问题 As it currently stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, references, or expertise, but this question will likely solicit debate, arguments, polling, or extended discussion. If you feel that this question can be improved and possibly reopened, visit the help center for guidance. Closed 7 years ago . I’ve got some apps on the cards, my target platform of choice is Android, however I’m aware that there are some SDK’s around

问题 I have an Activity X which is only accessible after you've entered a valid credential. How can I prevent other apps from calling startActivity with an Intent pointing to X ? e.g. Intent intent = new Intent( this, ActivityX.class ); startActivity( intent ); Basically I don't want Activity X to be exported to any apps except my app. 回答1: Check out the " Declaring and Enforcing permissions " section of the Security and Permissions Android SDK documentation. 来源： https://stackoverflow.com

问题 Say we have a group of 10 people, within 20m of one another. Each person has a mobile phone (iPhone / android / Windows phone). And one person taps the screen to send a message. And this is instantly registered by the others. Synchronisation is the key. It has to hit all target devices within a few milliseconds. How might I go about this? web sockets: I can't see this working as there is not guaranteed to be any Wi-Fi network. maybe I set up one phone as an access point, and the others

问题 Say we have a group of 10 people, within 20m of one another. Each person has a mobile phone (iPhone / android / Windows phone). And one person taps the screen to send a message. And this is instantly registered by the others. Synchronisation is the key. It has to hit all target devices within a few milliseconds. How might I go about this? web sockets: I can't see this working as there is not guaranteed to be any Wi-Fi network. maybe I set up one phone as an access point, and the others

问题 I'd like to get the native screen width on a device to append scripts in the DOM. Is it possible using jQuery ? Thanks 回答1: window.screen.width ? Source: https://developer.mozilla.org/en-US/docs/DOM/window.screen 回答2: Sure. You can get the basic width and height using: screen.width; screen.height; If required, you can also get the pixel ratio (useful if you need to also detect retina displays) by using: window.devicePixelRatio 回答3: You can set the width to device width with a css property:

问题 I really like the type of page shown here: http://jquerymobile.com/demos/1.0b1/#/demos/1.0b1/docs/pages/docs-pages.html But I cannot find in the source anything that says where the "Anatomy" or anything on how to get the navigation bar and content area. How do I make/get the content area and navigation area like the one shown in the demo? 回答1: I'm also looking for a solution to this as it's a very useful layout for navigating records. But viewing the source is a headache since the structure

问题 That's all about Phonegap Android and iOS application build on JS. We have a server with method: - Authorize(login,pass) which return certificate.p12 file (PKCS#12). Also server has methods, which requires authorization with that certificate. Example on Ruby looks like that: http = Net::HTTP.new(url.host, url.port) http.use_ssl = true http.verify_mode = OpenSSL::SSL::VERIFY_NONE pkcs12 = OpenSSL::PKCS12.new(File.read('<CERTIFICATE_PATH>'),'') http.cert = pkcs12.certificate http.key = pkcs12

问题 That's all about Phonegap Android and iOS application build on JS. We have a server with method: - Authorize(login,pass) which return certificate.p12 file (PKCS#12). Also server has methods, which requires authorization with that certificate. Example on Ruby looks like that: http = Net::HTTP.new(url.host, url.port) http.use_ssl = true http.verify_mode = OpenSSL::SSL::VERIFY_NONE pkcs12 = OpenSSL::PKCS12.new(File.read('<CERTIFICATE_PATH>'),'') http.cert = pkcs12.certificate http.key = pkcs12

问题 I am confused. The Youtube Iframe API with the standard example: https://developers.google.com/youtube/iframe_api_reference?hl=de always used to work for my mobile devices and does not work anymore now.. I´ve tried this fiddle: http://jsfiddle.net/77PJB/3/ <div id="player"></div> var tag = document.createElement('script'); tag.src = "https://www.youtube.com/iframe_api"; var firstScriptTag = document.getElementsByTagName('script')[0]; firstScriptTag.parentNode.insertBefore(tag, firstScriptTag)