mobile

问题 I would like to print to a Bixolon SPP-R200 as I've heard, it's one of the easier mobile bluetooth printers to set up with android. However I am not sure how to get started. I guess first I'd have to connect to the printer via bluetooth - I assume for this purpose I resort to the native Android bluetooth API? I'd probably need some kind of SDK to send data to the printer - I read here, that there is an SDK, but browsing the bixolon page has not yielded any results (i.e. no SDK) - I wrote to

问题 When we develop an Android application, we always start from the onCreate() method of the main activity. It is obvious that there are some initializations that should be done before calling onCreate() . My question is: what is the entrypoint point (or the main method) of an Android application? What does the Dalvik VM invoke in the very beginning (i.e., when it finishes initialization of its own, and is about to transfer control to the application)? Where can I find the code of this main ?

问题 As far as I know they are all from intel, do the same thing, and yet do not mention each other at all. So can someone clear some confusion, what and how they are different. I understand they are for making mobile apps, I checked out appmobi it wasn't much better for any interactive app than phonegap. Other than that I don't know what crosswalk is (maybe it's like cooconjs but with browser in it and asmjs support?). what is intel xdk..this is the most mysterious..is it same as crosswalk? Or

问题 I have a J2ME app running on my mobile phone(client), I would like to open an HTTP connection with the server and keep polling for updated information on the server. Every poll performed will use up GPRS bytes and would turn out expensive in the long run, as GPRS billing is based on packets sent and received. Is there a byte efficient way of polling using the HTTP protocol?. I have also heard of long polling, But I am not sure how it works and how efficient it would be. Actually the preffered

问题 I have been having difficult getting pinch zoom to work in the webapp I am creating with Phonegap. Currently, I am loading information into a p tag view a remote script, but the html goes out of the confines of the screen (of course going to landscape mode fixes this). Not matter, what I try I can't get pinch zoom to work or even a horizantal scrollbar to appear. I tried adding < meta name="viewport" content="width=device-width, height=device-height, initial-scale=0.8, user-scalable=1" /> in

问题 I was wondering if there is an "official" way to create apps for Android that will have the same design as the new Android market or Google+ app. By that I mean having the possibility to slide to the left/right to change the view, have the list on the top, etc.. (any Android user probably get what I mean) If there is no official way, do you have any tips on how to reproduce these effets ? 回答1: I believe this is what your referring to ' Android Compatibility Package ' http://developer.android

问题 I'm working on adding click/touch animations to buttons on a project I'm working on, and I've come across a frustrating problem concerning animating buttons which show and hide elements. The project is a single page mobile web app with a handful of buttons on it. I'm using jQuery to set a css keyframe animation on a button when it's pressed. The button hides the current page, and shows a new one. The problem is, when I click the button, the page changes before the animation is complete, and

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'm just starting to create my first mobile version of a desktop website that was written in WebForms. My current question has to do

问题 I have the following code where if the user presses back button on his device, I want to show him a popup before he is able to exit the app. However, this does not work for me. The alert box is showed but the app also closes. document.addEventListener("deviceready", function() { document.addEventListener("backbutton", function(e) { e.preventDefault(); $scope.alertDialog.show(); }, false); }, false); Cordova version:6.4.0 And before someone brings it out - cordova.js is included in the index

问题 I'm using the mousewheel plugin for jQuery to run some animations on mouse scroll, and I'm looking for the easiest/cleanest way to simply add swipe gestures to the existing code for use on tablets. What is a recommended plugin/library to accomplish this? I don't think I want to load the entire jquery mobile library just for this one section, so I'm looking for a small plugin similar to the mousewheel plugin if one exists. 回答1: swipe is not an event but rather combination of following: 1)