direction

Looking through the documentation , it seems that the new advanced gestures API doesn't determine the direction of a swipe beyond the basic { left, right, up, down }. I need the start point of the swipe and the direction. Is there anyway to retrieve this other than coding my own advanced gesture library from scratch out the basic gestures? And if this is my only option, could anyone point me to some open source code that does this? P i Got it! Documentation is here , under ' Creating Custom Gesture Recognizers ' at the bottom. Basically the six gestures Apple provides all derive from

I have an Android app that uses ViewPager and FragmentStatePagerAdapter. I however need to add a new feature in which I have to know the swipe direction to move from one fragment view to another, left or right. (i.e, when I swipe left, I would do one thing, and when I swipe right I would do something else). Please note, I do not need the events to happen AFTER the swipe is over. I have to do those events as the swipe occurs. I thought of using setOnPageChangeListener() but it does not tell me swipe direction. Can you advise me please on how to figure out swipe direction? Thanks. Take a look at

I am trying to implement the method scrollViewWillBeginDragging. When this method is called I check that the user has selected one of the buttons that are within the scrollview is in state:selected. If not then I display a UIAlert to inform the user. My problem here is I only want to call the button selected ( NextQuestion ) method if the user scrolls from right to left (pulling the next view from the right). But if they are scrolling from Left to Right then I want it to scroll as normal. At present the checker method is called no matter what direction the user scrolls in. How can I only call

不多说, 上代码, 拿去玩吧 1 #include <stdio.h> 2 #include <stdlib.h> 3 #include <windows.h> 4 #include <conio.h> 5 6 #define High 30 7 #define Width 30 8 9 int direction; 10 int length_snake; 11 int x_food, y_food; 12 int x_snake, y_snake; 13 int /*score,*/ speed, speedTop; 14 int canvas[High][Width] = {0}; 15 16 void startup(); 17 void show(); 18 void updateWithoutInput(); 19 void updateWithInput(); 20 void moveSnake(); 21 void gotoxy(int x, int y) 22 { 23 HANDLE handle = GetStdHandle(STD_OUTPUT_HANDLE); 24 COORD pos; 25 pos.X = x; 26 pos.Y = y; 27 SetConsoleCursorPosition(handle, pos); 28 } 29 void

什么是枚举？ 　　枚举是一组命名整型常量。枚举类型是使用 enum 关键字声明的。枚举是值类型。换句话说，枚举包含自己的值，且不能继承或传递继承。 定义枚举 ： public enum Direction { [Description("东")] East, [Description("南")] South, [Description("西")] West, [Description("北")] North } 默认枚举的int值从零开始，枚举的下一项int值会自动累加上一个枚举项的值。例如：East = 1,则South=2, West=3,以此类推。。。 或East = 4,则South=5, West=7,North=8。。。 获取枚举的int值： var eastNumber = (int)Direction.East; // eastNumber = 0; 获取枚举字符串： var eastString = Direction.East.ToString(); // eastString= "East"; int转枚举： var east = (Direction)0; // east = Direction.East string转枚举： const string strEnum = "East"; // ignoreCase: true/false (是否忽略大小写

分页的主要接口与类 PagingAndSortingRepository 继承自 CrudRepository 接口，提供了排序以及分页查询能力，提供了两个方法 Iterable<T> findAll(Sort var1); Page<T> findAll(Pageable var1); 虽然 PagingAndSortingRepository 接口中只有 findAll 方法，但是我们依然可以使用 Repository 中的衍生查询，我们只要把 Pageable 放到最后一个参数即可 JpaRepository 接口继承了 PagingAndSortingRepository 接口，并封装了常用的 CRUD 方法，通常我们继承 JpaRepository 来进行操作 Sort Sort 主要为了实现排序功能，内有枚举类指示排序方式 public static enum Direction { ASC, DESC; //省略方法 } Sort 的构造函数如下 //可以输入多个Sort.Order对象，在进行多个值排序时有用 public Sort(Sort.Order... orders) //和上面的方法一样，无非把多个参数换成了一个List public Sort(List<Sort.Order> orders) //当排序方向固定时，使用这个比较方便，第一个参数是排序方向

I'm developing a Android application and I would like to know if is possible detect the direction of movement with one axis fixed. For example, I want put my phone on the table and detect the direction when I move it (left, right, up and down). The distance is not necessary, I just want know the accurate direction. Yes. Using the SensorEventListener.onSensorChanged(SensorEvent event) you can determine the values provided along the X & Y axis. You would need to record these values and then compare them to any new values that you receive on subsequent calls to the onSensorChanged method to get a