Mobile Develop

Insert Database (SQLite) errorThis address: Http://blog.csdn.net/caroline_wendyError:android.database.sqlite.SQLiteException:no such Table:step (code 1):, While Compiling:insert into step (duration,date,counter) VALUES (?,?,?).Error: Insert

The first interface of a client is as followsAfter analysis, now toView|--TableView|-- View (covered in TableView)|----Button (side bar)|----Activity Indicator (Request network data)|----Label (title)This structure basically satisfies the layout of

1 /**2 * Install apk3 * 4 * @paramURL5 */6 Private voidinstallapk () {7File Apkfile =NewFile (apkfilepath);8 if(!apkfile.exists ()) {9 return;Ten } OneIntent i =NewIntent (intent.action_view); A

A: NSString and Nsinteger InterchangeNsinteger conversion nsstring Type: [NSString stringWithFormat: @ "%d", Nsinteger];NSString conversion Nsinteger Type: Nsinteger = [NSString intvalue];* Several other empathy [NSString boolvalue], [NSString

Business operationsThe first part: line measurement (relatively simple)Part II: English reading Comprehension (difficult, English is better 20 questions or so)Part III: Network + communicationI got a class B network address.Class A address range: 1.0

Recently work relatively busy, so had to write some blog on the weekend, hehe. In 3 years of Android work accumulated a lot of experience, I will slowly put my experience in the work to write to everyone! OK, now put a piece of code, is about

Android ui-slidingmenu Slide Menu effectThis blog to share a good effect on the side of the Slide menu demo, to achieve the click on the left menu switch fragment.The effect is as follows:Main Activity code:Package Com.infzm.slidingmenu.demo;import

1. Life cycle of activity2. Service life cycle3. Service and activity on the same thread?By default, it is in the same main thread. However, you can configure different processes by using the Android:process property in the manifest.4. What is soft

First set of methods:Res/laoyout/activity_main.xml Code:Relativelayoutxmlns:android= "Http://schemas.android.com/apk/res/android"Xmlns:tools= "Http://schemas.android.com/tools"Android:layout_width= "Match_parent"Android:layout_height=

Nineoldandroids Project: http://nineoldandroids.com/ In a system version above level 11, you can use the following methods to achieve view panning, transparency Text1.settranslationx ( -600 * arg1); Text1.setalpha (1-math.abs (arg1));

Haven't written a blog for a long time, this period is mainly to do too many things. It's been a while to touch Android. Many great gods introduced the development of custom components is really good, in fact, in the development of a good choice of

Tool: http://download.csdn.net/detail/tsdfk1455/8184757Principle:Use lint scan out the project of useless, duplicate, version unreasonable resources, here we only deal with pictures, Layout,menu resources is corresponding lintThe results of the

http://onevcat.com/2013/08/ios7-background-multitask/iOS provides the following multiple ways to handle background tasks1:beginbackgroundtaskwithexpirationhandler2: Background processing for a specific task3: Background Access4: Push Wakeup5:

typedef unsigned long long weiboid;typedef defines a user-friendly type, which is called "macro definition".Unsigned long long is an unsigned length-length integer. This should be the case, unsigned long long int, where int is omitted, the compiler

In Android, it is sometimes necessary to measure the control, and the resulting control width and height can be used to do some calculations. This calculation is particularly important in situations where adaptive screens are required. Another

Now on the bus, the subway, the road can see people holding cell phones, open, follow and then make voice calls. Audio and Video Call with the popularity of smartphones now everywhere, the rapid development of 4G network for now audio and video

First, explain the block's structure with a graph:Call the Block object variable as you call the function:int result = Myblock (5); Result is 35.Example 1: Using block delay method execution/** * Deferred call method in the main thread * * @param

category and extension in iOS The objective-c provides the means by which we can extend class definitions : Classes, extensions, and protocols. Category: Add a new method to a known class;extension: Notifications use classes in the definition of

The latest project involves two apk, if installed separately, there will be two prompt boxes, the user experience is not very good. But it would be troublesome to merge the source code of the two projects, and there would be a lot of conflicting

Android Rounded Rectangle, gradient color, customFirst, write an XML in the drawable directory, with the name random (as long as the specification is met), the code is as follows: Shape represents the form of graphics, mainly including