udacity app development course

(); } }}Note the Getresponsecode () method returns the status code of the connection. This status code can be used to obtain additional information about the connection. A status code of 200 indicates a successful connection.Convert a byte stream to a stringThe inputstream reads the byte data. Once the InputStream object is acquired, it is often necessary to decode it or convert it into other types of data. For example, if you download a picture, the byte stream code should be a picture:nul

In the mobile platform development class, the teacher gave us a source (in fact, let us write it out, she is to give us a reference to haha), let us add her requirements of the function, in accordance with the blogger urine sex This blog will certainly not introduce the development of this application, I will be the knot course of the paper sent up.Development of

This article mainly introduces the Android app development introductory course, from the SDK download, development environment Building, code writing, app packaging, such as step one by one, a very concise Android app

Recently, the company is preparing to develop a store cashier system, based on the ipad, and decided to adopt a hybrid development model based on Ionic + Cordova + angularjs technology. Get ready A Mac (a virtual machine with Mac OS is also available), Nodejs,ionic,xcode Installation 1, install NodejsTo download the Nodejs installation package (pkg file), need 0.10.* and the following version, high version will be many plu

;ImportAndroid.util.Log;ImportAndroid.widget.Button; Public class actionactivity extends Activity { Private Static intnum =0;@Override protected void onCreate(Bundle savedinstancestate) {//TODO auto-generated method stub Super. OnCreate (Savedinstancestate); LOG.E ("Actionactivity","Activity New Message!"+ num++); } }Actionbroadcast.java:ImportAndroid.content.BroadcastReceiver;ImportAndroid.content.Context;ImportAndroid.content.Intent;ImportAndroid.util.Log; Public class actionb

The main topics in this section include the Android Desktop widget, the app Widget Development Guide, and a simple example of how to visually explain the app widget.The concept of widgets, app widgets, Web appsThe original concept of the widget was a 98 Apple engineer named Rose, who was officially known until 2003, bu

object.The following example uses the fragment that references LRUCache and passes the issue of configuration changes:PrivateLrucache@Overrideprotected void onCreate(Bundle savedinstancestate) { ... Retainfragment retainfragment = retainfragment.findorcreateretainfragment (Getfragmentmanager ()); Mmemorycache = Retainfragment.mretainedcache;if(Mmemorycache = =NULL) {Mmemorycache =NewLrucache//Initialize cache here as usual} Retainfragment.mretainedcache = Mmemorycache; } ...} Class

In countless brain cells to develop an app and pass the test, self-feeling good, we must hope that our App can appear in the store's homepage as soon as possible, be people download, use, scoring, evaluation, feedback, or even be mercilessly sprayed. However, according to my experience, usually from the project package (packaging specific considerations, see the previous article), to pass the audit, other u

Reactnative Cross-platform Development series Tutorials: Take you from the zero-learning reactnative development of cross-platform app Development (i) In the previous tutorial we configured the necessary environment for the development of RN, this article we still config

Objective This article mainly shares the problems and processes that you have encountered in developing web apps, and some of the pits that have been filled up. If you would like to "How to develop Web Apps" or "30 minutes to learn to develop Web apps", please go to the Official Development manual (documentation). (There are links below). Background It feels like everyone is arguing (talking) about two things, Web apps and native apps. HTML5 to par

Long time no blog has been written, today by the rookie to do a simple Iosapp message push Tutorial! Starting from 0, including XCode6, IOS8, and the Apple Developer Center on how to register apps, request certificates, and download configuration profiles, I'm sure a lot of people who are just beginning to touch iOS will want to know. PS: Look at the Internet although there are a lot of good tutorials on the push, I also look at the step-by-step learning, but the time of these tutorials are last

= new DownloadStateReceiver(); // Registers the DownloadStateReceiver and its intent filters LocalBroadcastManager.getInstance(this).registerReceiver( mDownloadStateReceiver, mStatusIntentFilter); ...Broadcastreceiver can handle multiple types of intent objects at the same time, and this feature can define different code for each action, without having to define the Broadcastreceiver specifically. To define an additional intentfi

similar to the previous yield function. Using the Async function to accomplish parallel tasks is very similar to yiled, except that at this point the promise.all is no longer implicit and you need to display the call to it: Async function Save (something) { await promise.all[something.save (), Otherthing.save ()] KOA also supports async functions, and if you are using KOA, then you can use this feature now with the help of Babel. Import koa from KOA; Let

iOS App Development Starter Course: iOS installation toolsTo develop an application, you must use the IOS Software Development Kit (SDK) and Apple's Integrated development environment (IDE) Xcode. To create a great iPhone, IPod Touch and IPad

) | |(Recognizer.state==uigesturerecognizerstateended)) {Cgpoint translation=[recognizer Translationinview:self]; //move something in myself (I ' m a UIView) by translation.x and TRANSLATION.Y//For example, if I were a graph and my origin is set by an @property calledOrigin self.origin = Cgpointmake (self.origin.x+translation.x, self.origin.y+TRANSLATION.Y); [Recognizer Settranslation:cgpointzero inview:self];//Resume gesture Move distance, initialize for next gesture recognition call? }}⑤ Other

already in high demand among developers and IOS users. The function and usability of the system can also be greatly enriched by using these access points to provide corresponding functions. This article will give a general introduction to the common features of the various extensions, and then, with a practical example, focus on the development of the Today extension of the Notification center, with a view to providing a smooth entry for the extended

In the beginning of a project, what needs to be prepared for the preliminary work, in the outsourcing company, is a kind of development steps? Below, as I understand, say.Project flowchartLook, from left to right, if we are only a development engineer, we only need to be concerned about the role of "Development engineer".Of c