smartphone

问题 Ok, I am fairly new to web development for mobile/tablet platforms. I am pretty confident though in developing for a browser environment. My problem is that I don't own any tablet (I am poor so have to fly blind) so it's hard for me to do testing . I'm also quite anxious about the click events not working properly. How can I ensure that click and mousedown jquery events work on tablets/smartphones correctly? Is there any consensus on best practice for click events and tablets/smartphones?

问题 I have a R-Shiny application with a plot that implements interactive actions: click, hovering (hovering is passing the mouse over the plot, which can be detected by shiny). To give an idea, I post below a simplified shinyapp with the functionnality that is problematic to me, the interactive drawing plot. (it's taken from an old answer of mine here) It's actually working fine, however I need people to use it from their smartphones . The problem: the finger movements we do in the smartphone are

问题 This question already has answers here : Minimum screen resolution for Android devices (6 answers) Closed 4 years ago . What is the lowest screen resolution for a smartphone? is it 320x480 ? 回答1: nowadays after release android watch .. minimum resolution of screen is (a smart watch) with 240 x 240 resolution BUT Lowest Resolution is (240 x 320) for smart phone There are a couple of phones that use this resolution including the HTC Tattoo and Wildfire. The smallest device of is the 2.55" QVGA

问题 I am using the following HTML fragment to load a different stylesheet for smartphones: media="only screen and (min-device-width: 4801x)" media="only screen and (max-device-width: 480px)" I would like to disable a certain javascript script for smartphone users as well. Is that possible? I don't think i can do: <script media="only screen and (max-device-width: 480px)" t ype="text/javascript" src=""/> Thanks 回答1: You can detect the screen resolution in javascript and then change script execution

问题 I just can't find an up-to-date chart about which mobile devices support which Java Micro Edition version. I'm especially interested in Nokia smartphones and their support for the new JME 3.0 . (I wonder that Sun doesn't seems to provide such information.) Please, provide me some links, if you know any! EDIT: I'm probably mixing things up: MIDP seems to be the mobile Java platform , while J2ME 3.0 is a SDK for it, right? 回答1: Nokia device specs, including supported JSRs: http://www.forum

问题 Considering I have two smartphones, A and B. If I am holding smartphone A, is there a way to determine the location of B in relation to myself? So if we had the situation of this image: : it would tell me B is at position (2, 1). Inventive methods like using the strength of wifi signals to get position are more then welcomed. Could I also determine if there is a wall between the two phones? 回答1: As far as I understand, both Bluetooth and Wi-Fi signals move in a radial wave in all directions -

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 8 months ago . Is it possible to use the raw accelerometer data from a smartphone as a weighing scale? So, by placing an object on the screen, the app would weigh the object and the weight displayed on the screen. If it is not possible, could some other function of the smartphone estimate the

问题 Am working on smartphone application. And Developing through Emulator (USA Windows Mobile 5.0 Pocket PC R2 Emulator). But after Cradle Windows Mobile Device Center does not connect with Emulator. But it was connecting three days ago. After that I do not know why its not connecting... Its get connected with device but not with emulator now. I think I did soft reset from Emulator. So after that It got dead or not connected with WMDC. please help.. 回答1: Just in case anyone is struggling with

问题 I had been wondering how wireless earbuds work and came across this image. I do not know how to replicate what is shown in the following image and would like to learn how to do it. My end goal is to be able to have the smartphone connect to a device, while still being able to play music to a Bluetooth Headphone. I read into BLE 4.1 mesh and I am not sure if that would help either. I have made images for the possible ways the multiple devices could communicate but I don't have enough

问题 I want to make a desktop application trigger an event on a Windows Mobile 6 standard device (smartphone). How can I make the smartphone and desktop communicate? Where can I find some code examples of this? I'm using C#... To clarify: It will not be docked with USB. I would like to use WLAN. I want to trigger an event within my application that is already running on the smartphone. 回答1: One solution is to use RAPI. If you do so, then have a look at RAPI communication library at OpenNETCF. This