Detailed gestures in iOS

1. Click

UITapGestureRecognizer *tap=[[UITapGestureRecognizer alloc] initwithtarget:self action: @selector (click)]; //set the number of times you want to click now[Tap setnumberoftapsrequired:1]; //sets the number of fingers that currently need to trigger an event[Tap setnumberoftouchesrequired:2];//Set Current proxyTap.Delegate=Self ; [_view Addgesturerecognizer:tap];//Trigger Method- (void) click{NSLog (@"the current view is clicked! ");}

2. Long Press

Uilongpressgesturerecognizer * longpress=[[Uilongpressgesturerecognizer alloc] initwithtarget:self action:@ Selector (longpress)]; // sets the current long press minimum length of longpress.minimumpressduration=2; // set allowed range of moves [Longpress setallowablemovement:2]; [_view addgesturerecognizer:longpress]; // Trigger Method -(void) longpress{    NSLog (@ "");}

3. Swipe

Uiswipegesturerecognizer * swip=[[Uiswipegesturerecognizer alloc] initwithtarget:self action: @selector (Swipmethod)]; //towards the left .swip.direction=Uiswipegesturerecognizerdirectionleft; //towards the right .swip.direction=Uiswipegesturerecognizerdirectionright; //go up the direction.swip.direction=Uiswipegesturerecognizerdirectionup; //go down the direction .swip.direction=Uiswipegesturerecognizerdirectiondown;        [_view ADDGESTURERECOGNIZER:SWIP]; //Trigger Method- (void) swipmethod{NSLog (@"Swipe Event Trigger! ");}

If a gesture involving more than 2 directions is best to add multiple Uiswipegesturerecognizer objects and set different orientations, do not use the symbol | To connect in the following way:

Swip.direction=uiswipegesturerecognizerdirectionleft  | Uiswipegesturerecognizerdirectionright  

4. Drag

First step: Add a View

_view=[[uiview Alloc] Initwithframe:cgrectmake ()];[ _view Setbackgroundcolor:[uicolor Redcolor]]; [Self.view Addsubview:_view];

Step Two: Add gestures

Uipangesturerecognizer *pan=[[Uipangesturerecognizer alloc] initwithtarget:self action: @selector (paned:)];[ _view Addgesturerecognizer:pan];

Step Three: implementation methods

-(void) paned: (Uipangesturerecognizer *) pan{        // Get the size of the move    cgpoint point= [Pan TranslationInView:pan.view];     // Change the center point coordinates    of a view Cgpoint points=_view.center;    Points.x+ =point.x;    Points.y+ =point.y;    _view.center=points;     // clear every time. Eliminate coordinate overlays     [Pan Settranslation:cgpointzero InView:pan.view];}

5. Rotation

First step: Add a View

_view=[[uiview Alloc] Initwithframe:cgrectmake ()];[ _view Setbackgroundcolor:[uicolor Redcolor]]; [Self.view Addsubview:_view];

Step Two: Add gestures

Uirotationgesturerecognizer * roate=[[Uirotationgesturerecognizer alloc] initwithtarget:self action: @selector ( Rotate:)];    [_view addgesturerecognizer:roate];roate. delegate=self;

Step Three: implementation methods

-(void) Rotate: (Uirotationgesturerecognizer *) rote{   // get the degree   of current rotation CGFloat rotation= rote.rotation;     // Rotation through affine transformations  _view.transform=cgaffinetransformrotate (_view.transform, rotation);     // prevent rotation overlays need to clear 0    rote.rotation=0;}

6. Kneading

First step: Add a View

_view=[[uiview Alloc] Initwithframe:cgrectmake ()];[ _view Setbackgroundcolor:[uicolor Redcolor]]; [Self.view Addsubview:_view];

Step Two: Add gestures

Uipinchgesturerecognizer * pich=[[Uipinchgesturerecognizer alloc] initwithtarget:self action: @selector (piches:) ]; [_view Addgesturerecognizer:pich];p ich. delegate=self;

Step Three: implementation methods

-(void) Piches: (Uipinchgesturerecognizer *) pich{    // get proportional    cgfloat scale =Pich.scale;     // Scaling with affine transformations    _view.transform=Cgaffinetransformscale (_view.transform, scale, scale);     // prevent proportional overlays from needing to be set to 1    pich.scale=1;}

"Supplemental" Override proxy method if you need to respond to multiple gestures simultaneously

-(BOOL) Gesturerecognizer: (Uigesturerecognizer *) Gesturerecognizer Shouldrecognizesimultaneouslywithgesturerecognizer: (Uigesturerecognizer *) othergesturerecognizer{     return YES;}

Detailed gestures in iOS