how to start learning android programming

Today, learning about Android development suddenly encountered this problem, looked at a lot of information, and the focus on the reasons for analysis. Error message string: Java.lang.RuntimeException:Unable to start activity Componentinfo{com.first/com.first.game}: Java.lang.NullPointerException This error is commonly found in Setcontentview (XXX) in the Activ

Project Needs, start learning flash A good memory is worse than a bad pen. Learn and remember it. Let's take a look at learning in my own way. It takes a long time to learn some simple programming. It's enough, and I don't have much energy to thoroughly understand the "Buddha .~ _~ In terms of syntax, we knew it was si

staff, and the company has a set of management methods in software research and daily management. Prior to the absence of the kaol system, the management work related to kaol is as follows:1: Each employee needs to take a card at work in the morning and a card at work in the afternoon,2: If you need to go out to work during the period, you need to get a card when you leave the company, and you need to get another card when you return to the company.3.4: The Administration Department collects ka

Basic android control learning ----- Date Time, android ----- date Date Time: TextClock (Text clock), AnalogClock (analog clock), Chronometer (timer), DatePicker (date selector), TimePicker (Time selector), and CalendarView (date view) the first three of these six are rarely used. If we need to customize the last three controls in actual applications, we do not

, there are some popular jobs and the main application directions in the Android operating system industry: android Top Job Openings ☆android Mobile software Development Engineer ☆android mobile game development Engineer ☆android mobile game planner ☆

This article describes the application of Android programming to automatically update, download, install the method. Share to everyone for your reference, specific as follows: We see a lot of Android apps with Automatic Updates, and the user can update the software with one click. Thanks to the Android software packag

types and operators 4th Chapter flow control and Arrays 5th object-oriented (UP) 6th chapter Object-oriented (lower) 7th Chapter Java Collection 8th Chapter generic 9th chapter and run Environment interaction 10th Chapter Exception Handling 11th Chapter AWT Programming 12th Chapter Swing The 13th Chapter JDBC Programming 14th Chapter Annotation (note) 15th Chapter input/output 16th Chapter Multithreading 1

Android is a Linux-based smartphone operating system developed by Google. It is widely used in 3G mobile phones and netbooks. Currently in the explosive growth phase, HTC (HtC), Motorola, Sony Ericsson, Samsung and many other companies have launched Android-based smart operating systems, and even many netbooks use Android operating systems. Currently,

setParams(HttpParams)方法来添加请求参数，对于HttpPost对象而言，也可调用setEntity(HttpEntity)方法设置请求参数。 使用HttpEntity下的UrlEncodedFormEntitiy对象传入一个放入BasicNameValuePair的集合中提交的数据。 如：HttpPost post=new HttpPost("");List--httpclient return different data parsing methodsA) return the normal text datab) return HTML datac) Return XML data xml的解析可以采用sax,dom,dom4j,pulld) return JSON data (mentioned in the last article JSON parsing)Attention:1. Chinese garbled problem: three kinds of waysString N=urlencoder.encode ("Zhang

Preface: Beginner iOS programming, I would like to use this series of blog to record their own learning iOS development of the drip, and to communicate with everyone. This is also the first time to write a blog, write bad or wrong place, Welcome to the way the great God pointed out, in this first thanked ~ Note: Because they have just begun to learn, the previous few estimates of the code amoun

Project needs, start learning flash A good memory is better than a bad pen, while learning to remember it. Look at my way to learn how long it will take to learn some simple programming, enough on the line, and there is not much energy to the "Buddha poop" to understand. ~_~ The grammar aspect, knew that it is similar

PHP learning notes-starting from setting up the PHP development environment, when talking about PHP, the first thing that comes to my mind is the Facemash picture of Mark in "social networking" in the bedroom. This is one of the reasons why I learned PHP. I will not be arrogant about the advantages of PHP. I will know the famous domestic and foreign websites that use PHP + MySQL technology. To learn a language, you must