Mobile Develop

report exception when using Jackson to serialize Java objects :com.fasterxml.jackson.databind.jsonmappingexception:  (was  java.lang.NullPointerException)   (through reference chain: com.chanjet.gov.student["age"])

4s to run, or good.Retina (3.5-inch):One to 5 above the screen, it becomes this:Retina (4-inch):Workaround:Add default.png, [email protected], [email protected] Three pictures come in, you can add to supporting Files .Add the following three bright

iOS development, there are several ways to view crash logs.1 before release, the beta phase, the installation of the Hoc version of the IPA, if the crash, get the device, on the machine on the package open Xcode,orgnizer, check the device log can be

-(void) Networkstatusto{Nsarray *subviews = [[[[UIApplication sharedapplication] valueforkey:@ "StatusBar"] Valueforkey:@ "Foregroundview"]subviews]; NSNumber *datanetworkitemview = nil; For (ID subview in subviews) { if([Subview

The previous article talked about some basic concepts: screen density, logical pixels, and so on.Common Device Dimensionsfor a more complete list of data, refer to Google StatsDescription: The IPhone 6 Plus data in the figure looks a bit fishy, 414

I. Development frameworkIonic frame: Based on HTML5,CSS3 official website: Http://www.ionic.wang;Cordova: Packaging tools, packaging cross-platform apps, providing a cross-platform API library Plugins.cordova.ioOperations in Ngcordova:angularjs

Importing & exporting Documents in IOSPosted by weimenglee-09 Https://mobiforge.com/design-development/importing-exporting-documents-iosSee also ... Ad Blocker technology Large-screen iPhones See Apple ' s Q1 revenue skyrocket Using

1. Create a. aidl fileThe AIDL syntax is simple to declare an interface in which methods receive parameters and return values, but the types of parameters and return values are constrained, and some types require import, others do not.The data types

1. How to stop UIView animations:#import      [self.view.layer removeallanimations];2. Block page value-passing method: 3. UITableViewCell cell coordinate conversion cell relative Self.view positioning: CGRect rect=[self.view convertRect:cell.frame

Android gets screen height and width android获取屏幕的高度和宽度用到WindowManager这个类，两种方法： 1、WindowManager wm = (WindowManager) getContext()                    .getSystemService(Context.WINDOW_SERVICE);     intwidth =

One: Configure Web. xml1) Problem: There are multiple configuration files in the spring project Mvc.xml Dao.xml2) Resolution: in Web. xmlcontextConfigLocation/WEB-INF/xxx/*.xmlXXX represents an XML file path *.xml represents any file with a suffix

1. Underlying support library (graphical display dependent) Yum install-y Cairo Pango zlib zlib-devel freetype freetype-devel gd gd-devel2. Rrdtools Support Software LIBART_LGPLYum Install LIBART_LGPLor compile and install

Today, this problem has been encountered with the following errors:inch : /users/***/library/developer/xcode/deriveddata/***-fmtpkcbvfajuuadtvwtzfyjxoywz/build/intermediates/***.build/

We do project sometimes encounter set auto scrolling picture, so I have encountered two times myself. Think he's a pretty interesting thing so did the next summaryDEMO:. h#import @interface imageplayview:uiview * * * timer; @end. m#import

Dapper.net usedirectory of this document Dapper.net use 1. Why Choose Dapper 2, take dapper (4.0) as an example. 2.1 Create several tables in the database. 2.2 Entity classes. 3. How to use 3.1 One-to-one mapping

Basis UI (User interface) is the interface; iOS apps are made up of a variety of UI controls UIWindow is a window, learning the first basic class, is a container, you can put different content on the container,

360 Technical Team Address: http://blogs.360.cn/blog/proxydelegate-application/Android Plugin Development, made dynamic loadAbout us Android Dex automatic unpacking and dynamic loading introductionTo achieve some special needs, such as interface

IOS Uitextfield Control SummaryFirst declare the following summary is not written by yourself.Initialize the TextField and set the location and size   Uitextfield *text = [[Uitextfield Alloc]initwithframe:cgrectmake]]; 　Set border style, only set to

Cocos2dx -- image gray implementation There are many button controls in the game. They generally have two states: select and not select. If we want to differentiate the performance of these two states, we often call art directly to give Resources in

Touch Handling in Cocos2D 3.x( 1) Original post address Cocos2d 3.0 brings a fully corrected touch processing system. This blog post will provide all touch-related information:Receives the touch and obtains the touch position to process events in