1.IBAction:1> can guarantee that the method can be wired2> equivalent to void2.IBOutlet:1> can ensure that attributes can be wired3. Common errorsSetvalue:forundefinedkey:]: This class was not key value codingThe reason for the error is: the
first, the state of UIButtonNormal (normal state) Ø The default Ø corresponding enumeration constant: UIControlStateNormal highlighted (highlight state) O button is pressed down (finger not released) Ø Corresponding enumeration constants:
the advantages of replacing dictionaries with models• Disadvantages of using dictionaries ø in general, setting data and fetching data use "String type Key", when writing these keys, the compiler will not have any friendly prompts, need to knockdict[
Android Studio version 1.0.0 released Much waited Android Studio V1 is out. Well, if your is Android Dev, and do Android as your day job, you should isn't being excited about this release much because, We know how quick was Google when it comes to
Android powerful, the interface is gorgeous, but a lot of layout properties on the pain of the developer, the following this article combined with a lot of information on the Internet, spend my afternoon out of the hope for other people useful.First
1 if you do not download the document for Android SDK, first download the corresponding document from the SDK Manager2 already has the document, but still has been fetching documentation, may be the Android studio configuration file is not
For example, in the Viewpager, click the Volume button to adjust the previous page, return True to cancel the display of the volume interface@Overridepublic boolean onKeyDown (int keycode, keyevent event) {if (Voiceread.equals ("open")) {if (keycode
The source code is the Voice sharing application source code, this demo uses the Iflytek speech recognition as the input way to share the content, also supports the manual keyboard input sharing content, limits the share content text cannot exceed 18
Sign up for notifications in the message center first[[Nsnotificationcenter defaultcenter] addobserver:observer selector: @selector ("function to execute") name:@ "name" ( Objects that need to be observed) Object:nil];Then send a
Nagios is a very powerful open-source system network monitoring program that accesses http://www.nagios.org to understand its basic features. Nagios not only realizes the basic system monitoring of the system CPU, disk, network and other parameters,
In fact, since last year began in the research of the public reviews of the third-party development, has been intermittent. Now is the time to set goals for yourself. From this project, you can learn any knowledge about objective-c.1. Network
The ListView click fails because the button in the item layout may be present, and the button captures the focus.Workaround:1, in the XML layout, add Android:focusable= "false" to the button2, add android:descendantfocusability= "Blocksdescendants"
Relative, absolute path it is necessary to make an analogy: like you on the same floor of the neighbor Beauty said: I live 202, evening to my home for dinner. She can find it, and you say this to the strange woman who meets on the street, and if she
The difference is, an object would be deallocated as soon as there was no strong pointers to it. Even if weak pointers point-to-it, once the last strong pointer is gone, the object would be deallocated, and all remaining Weak pointers is zeroed
After setting up the Android development environment, it is no problem to run the Android app with the simulator, but when the phone is connected to the computer by USB, the computer is not recognized and Eclipse is not recognized. The reasons are
There are three ways to persist iOS data:
Attribute list (plist, nsuserdefaults)
Archive (Nskeyedarchiver)
Databases (SQLite, Core Data, third-party class libraries, etc.)
Archive (aka serialization), convert objects to
The previous article wrote about downloading the necessary development resources offline, and now take a small look at the installation of Eclipse and Android studio(i) Eclipse1, download Download transfer2, General download Eclipse IDE for Java
Remember the "disruptive" flat design of iOS 7? We marvel at the various flat UI interfaces in which the progress bar is even more impressive. Today we will share a small tutorial on iOS7 progress bar made with CSS3, which is a very good UI
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