下面是實踐過後總結的具體步驟，例子程式碼實現了一個一橫一豎畫一個十字的手勢：

首先建立UIGestureRecognizer的子類。

#import <UIKit/UIKit.h>

@interface CustomTouch2: UIGestureRecognizer

@end

在.m檔案import UIGestureRecognizerSubclass.h

#import <UIKit/UIGestureRecognizerSubclass.h>

在.m中實現

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event;

- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event;

- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event;

- (void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event;

其中，

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event;

中可能需要實現記錄手勢的起始位置的操作

- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event;

中可能要實現一些檢查，當手勢動作達到設定位置時觸發手勢回撥方法，在這裡需要設定state為UIGestureRecognizerStateEnded

    if (self.state == UIGestureRecognizerStatePossible) {

        [self setState:UIGestureRecognizerStateEnded];

    }

另外，viewController中要對對應的View新增 addGestureRecognizer 

- (void)viewDidLoad {

    [superviewDidLoad];

CustomTouch2

    [self.viewaddGestureRecognizer:customTouch];

}

- (void) handleTouch:(UIRotationGestureRecognizer*) recognizer

{

NSLog(@"你觸發的手勢");

}

下面是我實現的一個十字手勢的程式碼：

#import "CustomTouch2.h"

#import <UIKit/UIGestureRecognizerSubclass.h>

@interface CustomTouch2()

{

     CGPoint curTickleStart;

    BOOL arriveFirstPoint;

    BOOL arriveLastPoint;

}

@end

static int touchTimes = 0;

@implementation CustomTouch2

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event

{

    UITouch * touch = [touches anyObject];

    curTickleStart = [touch locationInView:self.view];

}

- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event

{

    UITouch * touch = [touches anyObject];

    CGPoint ticklePoint = [touch locationInView:self.view];

    CGFloat horizontal = ticklePoint.x - curTickleStart.x;

    CGFloat vertical = ticklePoint.y - curTickleStart.y;

    if (!arriveFirstPoint &&  vertical >= 50 && (horizontal <= 10 || horizontal >= -10)) {

        arriveFirstPoint = YES;

            touchTimes ++;

    }

    if (arriveFirstPoint && (vertical <= 10 || vertical >= -10) && horizontal >= 50){

        arriveLastPoint = YES;

            touchTimes ++;

    }

    if (touchTimes == 2 && self.state == UIGestureRecognizerStatePossible ) {

        [self setState:UIGestureRecognizerStateEnded];

        touchTimes = 0;

        arriveFirstPoint = NO;

    }

}

- (void)reset {

    curTickleStart = CGPointZero;

    if (self.state == UIGestureRecognizerStatePossible) {

        [self setState:UIGestureRecognizerStateFailed];

    }

}

- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event

{

    [self reset];

}

- (void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event

{

    [self reset];

}

@end