directional spotlight

in today's smartphones , there are auto-sensing functions for directional transformations, such as when the phone's direction is switched from the horizontal to the vertical direction, which triggers the event. In jquery mobile, you can bind through the Orientationchange event, and you can set the vertical or horizontal direction, as shown in the following code:$ (document). Ready (function () {$ ('body'). Bind (' Orientationchange', function (event)

store the linked list privatenodelast=null;// is used to store the collection length Privateint size=0;//method of adding elements Publicvoidadd (objectobj) {//Create node object nodenode= newnode ();//node stores the added element node.element=obj;//determines whether the first node is nullif (first== NULL) {//The first node for the description is the first time that the element is added first=node;//sets the first and last nodes to their own first.pre=node; First.next=node;} Determines whethe

to listen for directional changes, you need to implement this interface for inheritance*/ Public Static Abstract Interfaceorientationlistener{ Public Abstract voidOnorientationchanged (floatorientatoin); } protected FinalHandler Mhandler =NewHandler (); PrivateSensormanager Sensormanager; PrivateSensor Morientationsensor; Private floatmtargetdirection = 0; PrivateArraylistNewArraylist(); Private LongDelaymillis = 20; PublicOrientationserv

(Student S:teacher.getsupstudents ()) {System.out.println ("**********************************************"); System.out.println (S.getname () + "" + s.getgender () + "+ s.getgrade () +" "+ s.getmajor ());//access teacher from student SYSTEM.OUT.PR INTLN ("Instructor Research Direction:" + s.getsupervisor (). Getresearcharea ());} System.out.println ("**********************************************");}}}As you can see, the object at the other end can be accessed from either end.V. Modification o

Just add a piece of code anywhere:Orientationeventlistener Morientationlistener = new Orientationeventlistener (this, sensormanager.sensor_delay_ui) { public void onorientationchanged (int orientation) {}};if (Morientationlistener.candetectorientation ()) Morientationlistener.enable ();further, it would be better to switch to another type of sensor, without doing more experiments, and estimating how much less system energy would be available. This method is better than startforeground (any inte

1.Scrapy IntroductionScrapy,python developed a fast, high-level screen capture and web crawling framework for crawling web sites and extracting structured data from pages. Scrapy can be used for data mining, monitoring and automated testing in a wide range of applications.The attraction of Scrapy is that it is a framework that anyone can easily modify as needed. It also provides a variety of types of crawler base classes, such as Basespider, Sitemap crawler.2.Scrapy installation (http://www.cnbl

Seamless scrolling + drop-down refresh + directional swipe on mobile

false; } if(Getprojectionradius (other._vectors[i]) +Other.getprojectionradius (other._vectors[i])dot (distancevector, other._vectors[i])) { return false; } } return true; }Private: voidResetvector () {_vectors[0][0] =cos (_rotation); _vectors[0][1] =sin (_rotation); _vectors[1][0] =-_vectors[0][1]; _vectors[1][1] = _vectors[0][0]; } floatDotfloata[2],floatb[2]) { returnABS (a[0] * b[0] + a[1] * b[1]); } floatGetprojectionradius (floatvect

Function Swap ( $list, $i, $j) {$temp = $list [$i];$list [$i] = $list [$j];$list [$j] = $temp;}function Cocktailsort ($list, $n) {$min = 0;$max = $n-1;while($min }function Main () {$list = Array (20,3,5,78,4,1);$n = count ($list);$list = Cocktailsort ($list, $n);Var_dump ($list);}Main ();Directional Bubble Sorting

This article is mainly to share the use of pure JavaScript to achieve the control of four directional text seamless scrolling code, the effect is very good, the need for small partners can refer to. To achieve a seamless text scrolling effect: ? 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30-31 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69

The 1.android coordinate system defines the x, y z axes. The direction of the x-axis is the horizontal direction of the screen from left to right, if the cell phone is not a square, the shorter side needs to be placed horizontally, the longer side needs to be placed vertically. The y-axis is directed from the bottom left corner of the screen to the top of the screen along the vertical direction of the screen. Put the phone on the table, the direction of the z axis from the phone pointing to t

Services (Sensor_service) returns a Sensormanager object manager = (sensorm Anager) GetsystemservIce (Context.sensor_service); @Override protected void Onresume () {/** * get direction sensor * through Sensormanager object Gets the corresponding Sensor type of object/Sensor Sensor = Manager.getdefaultsensor (sensor.type_orientation); Application in the foreground when registering listener manager.registerlistener (listener, sensor, sensormanager.sensor_delay_game); Sup

Our web page has a changing style because of CSS. This seemingly simple style language is very flexible to use, as long as you are creative you can achieve a lot more than people think. Especially with the widespread use of CSS3, more novel CSS works emerge.Today brings you CSS triangle rendering methodThe code is as follows:#triangle-up {width:0;height:0;border-left:50px solid Transparent;border-right:50px solid Transparent;border-bottom:100px solid red;}The code is as follows:#triangle-down {w

Many-to-many relationship mappingsProperties of the Set element:Cascade: Cascading operations.Value:Save-update: Cascading Save UpdatesDelete: Cascade Delete.Note: In a many-to-many bidirectional relationship mapping, you cannot configure bidirectional cascade deletions. However, you can configure two-way cascading to save updates.Hibernate multi-pair multi-directional relationship mapping cascade configuration

Java All-round learning Java 2 omni-directional learning J2ME Wireless Java application Development Java Mobile Phone Program design Introduction and Application1, for the general PC platform, the Java program is divided into two categories, one is on the PC operating system through the JVM directly running Java application, the other is through the browser with the JVM running Java applet.2, 3, Javac,java,appletviewer.4, Java is Unicode as a characte