ios中模拟手势单击或是双击

1.拓展UITouch类和UIEvent类（通过category），具体见附件TouchSynthesis.h和TouchSynthesis.m

2.在需要的类中，定义UITouch和UIEvent类的对象。

UITouch *touch = [[UITouchalloc] initWithPoint:point andView:mapview];

     UIEvent *eventDown = [[UIEventalloc] initWithTouch:touch];

[touch.view touchesBegan:[eventDownallTouches]  withEvent:eventDown];

[touch setPhase:UITouchPhaseEnded];

    UIEvent *eventUp = [[UIEventalloc] initWithTouch:touch];

    [touch.view touchesEnded:[eventUp allTouches] withEvent:eventUp];

    [eventDown release];

    [eventUp release];

     [touch release];

TouchSynthesis.h文件

#import <UIKit/UIKit.h>

@interface UITouch (Synthesize)

- (id)initInView:(UIView *)view;
-(id) initdoubletap:(UIView *)view;
- (id)initWithPoint:(CGPoint)point andView:(UIView*)view;
- (void)setPhase:(UITouchPhase)phase;
- (void)setLocationInWindow:(CGPoint)location;

@end

@interface UIEvent (Synthesize)

- (id)initWithTouch:(UITouch *)touch;

@end

TouchSynthesis.m文件

#import "TouchSynthesis.h"
#import "MyUITouch.h"


@implementation UITouch (Synthesize)

//
// initInView:phase:
//
// Creats a UITouch, centered on the specified view, in the view's window.
// Sets the phase as specified.
//
- (id)initInView:(UIView *)view
{
    NSLog(@"init in view");
    self = [super init];
    if (self != nil)
    {
        CGRect frameInWindow;
        if ([view isKindOfClass:[UIWindow class]])
        {
            frameInWindow = view.frame;
        }
        else
        {
            frameInWindow =
                [view.window convertRect:view.frame fromView:view.superview];
        }
         
        _tapCount = 1;
        _locationInWindow =
            CGPointMake(
                frameInWindow.origin.x + 0.5 * frameInWindow.size.width,
                frameInWindow.origin.y + 0.5 * frameInWindow.size.height);
        _previousLocationInWindow = _locationInWindow;

        UIView *target = [view.window hitTest:_locationInWindow withEvent:nil];

        _window = [view.window retain];
        _view = [target retain];
        _phase = UITouchPhaseBegan;
        _touchFlags._firstTouchForView = 1;
        _touchFlags._isTap = 1;
        _timestamp = [NSDate timeIntervalSinceReferenceDate];
    }
    return self;
}
- (id)initdoubletap:(UIView *)view
{
    NSLog(@"init in view");
    self = [super init];
    if (self != nil)
    {
        CGRect frameInWindow;
        if ([view isKindOfClass:[UIWindow class]])
        {
            frameInWindow = view.frame;
        }
        else
        {
            frameInWindow =
            [view.window convertRect:view.frame fromView:view.superview];
        }
        
        _tapCount = 2;
        _locationInWindow =
        CGPointMake(
                    frameInWindow.origin.x + 0.5 * frameInWindow.size.width,
                    frameInWindow.origin.y + 0.5 * frameInWindow.size.height);
        _previousLocationInWindow = _locationInWindow;
        
        UIView *target = [view.window hitTest:_locationInWindow withEvent:nil];
        
        _window = [view.window retain];
        _view = [target retain];
        _phase = UITouchPhaseBegan;
        _touchFlags._firstTouchForView = 1;
        _touchFlags._isTap = 1;
        _timestamp = [NSDate timeIntervalSinceReferenceDate];
    }
    return self;
}

- (id)initWithPoint:(CGPoint)point andView:(UIView*)view
{
    self = [super init];
    if (self != nil)
    {
        CGRect frameInWindow;
        if ([view isKindOfClass:[UIWindow class]])
        {
            frameInWindow = view.frame;
        }
        else
        {
            frameInWindow =
            [view.window convertRect:view.frame fromView:view.superview];
        }
        
        _tapCount = 1;
        _locationInWindow = point;
        _previousLocationInWindow = _locationInWindow;
        UIView *target = [view.window hitTest:_locationInWindow withEvent:nil];
        _view = [target retain];
        _window = [view.window retain];
        _phase = UITouchPhaseBegan;
        _touchFlags._firstTouchForView = 1;
        _touchFlags._isTap = 1;
        _timestamp = [NSDate timeIntervalSinceReferenceDate];
    }
    return self;
}
//
// setPhase:
//
// Setter to allow access to the _phase member.
//
- (void)setPhase:(UITouchPhase)phase
{
    _phase = phase;
    _timestamp = [NSDate timeIntervalSinceReferenceDate];
}

//
// setPhase:
//
// Setter to allow access to the _locationInWindow member.
//
- (void)setLocationInWindow:(CGPoint)location
{
    _previousLocationInWindow = _locationInWindow;
    _locationInWindow = location;
    _timestamp = [NSDate timeIntervalSinceReferenceDate];
}

@end



//
// GSEvent is an undeclared object. We don't need to use it ourselves but some
// Apple APIs (UIScrollView in particular) require the x and y fields to be present.
//
@interface GSEventProxy : NSObject
{
@public
    unsigned int flags;
    unsigned int type;
    unsigned int ignored1;
    float x1;
    float y1;
    float x2;
    float y2;
    unsigned int ignored2[10];
    unsigned int ignored3[7];
    float sizeX;
    float sizeY;
    float x3;
    float y3;
    unsigned int ignored4[3];
}
@end
@implementation GSEventProxy
@end

//
// PublicEvent
//
// A dummy class used to gain access to UIEvent's private member variables.
// If UIEvent changes at all, this will break.
//
@interface PublicEvent : NSObject
{
@public
    GSEventProxy           *_event;
    NSTimeInterval          _timestamp;
    NSMutableSet           *_touches;
    CFMutableDictionaryRef  _keyedTouches;
}
@end

@implementation PublicEvent
@end

@interface UIEvent (Creation)

- (id)_initWithEvent:(GSEventProxy *)fp8 touches:(id)fp12;

@end

//
// UIEvent (Synthesize)
//
// A category to allow creation of a touch event.
//
@implementation UIEvent (Synthesize)

- (id)initWithTouch:(UITouch *)touch
{
    CGPoint location = [touch locationInView:touch.window];
    GSEventProxy *gsEventProxy = [[GSEventProxy alloc] init];
    gsEventProxy->x1 = location.x;
    gsEventProxy->y1 = location.y;
    gsEventProxy->x2 = location.x;
    gsEventProxy->y2 = location.y;
    gsEventProxy->x3 = location.x;
    gsEventProxy->y3 = location.y;
    gsEventProxy->sizeX = 1.0;
    gsEventProxy->sizeY = 1.0;
    gsEventProxy->flags = ([touch phase] == UITouchPhaseEnded) ? 0x1010180 : 0x3010180;
    gsEventProxy->type = 3001;    
    
    //
    // On SDK versions 3.0 and greater, we need to reallocate as a
    // UITouchesEvent.
    //
    Class touchesEventClass = objc_getClass("UITouchesEvent");
    if (touchesEventClass && ![[self class] isEqual:touchesEventClass])
    {
        [self release];
        self = [touchesEventClass alloc];
    }
    
    self = [self _initWithEvent:gsEventProxy touches:[NSSet setWithObject:touch]];
    if (self != nil)
    {
    }
    return self;
}

@end

MyUITouch.h文件
#import <Foundation/Foundation.h>

#ifdef __IPHONE_6_0
@interface UITouch () {
    NSTimeInterval _timestamp;
    UITouchPhase _phase;
    UITouchPhase _savedPhase;
    NSUInteger _tapCount;
    
    UIWindow *_window;
    UIView *_view;
    UIView *_gestureView;
    UIView *_warpedIntoView;
    NSMutableArray *_gestureRecognizers;
    NSMutableArray *_forwardingRecord;
    
    CGPoint _locationInWindow;
    CGPoint _previousLocationInWindow;
    UInt8 _pathIndex;
    UInt8 _pathIdentity;
    float _pathMajorRadius;
    struct {
        unsigned int _firstTouchForView:1;
        unsigned int _isTap:1;
        unsigned int _isDelayed:1;
        unsigned int _sentTouchesEnded:1;
        unsigned int _abandonForwardingRecord:1;
    } _touchFlags;
}
@end
#endif