IOS gestures in a detailed

//

Viewcontroller.m

Gesture recognition

//

Created by Cheze on 15/4/2.

Copyright (c) 2015 Cheze. All rights reserved.

//

#import "ViewController.h"

#define ImageFrame CGRectMake (22, 22, 222, 222)

@interface Viewcontroller ()

{

Uiimageview * ImageView;

float rotation;

}

@end

@implementation Viewcontroller

-(void) Viewdidload {

[Super Viewdidload];

ImageView =[[uiimageview Alloc]initwithframe:imageframe];

imageview.tag=10;

Imageview.image=[uiimage imagenamed:@ "1.jpg"];

[ImageView Setuserinteractionenabled:yes];

[Self.view Addsubview:imageview];

UITapGestureRecognizer * Tap =[[uitapgesturerecognizer alloc]initwithtarget:self action: @selector (tap:)];

//

//

[Tap setnumberoftapsrequired:1];//Double-click

[Tap setnumberoftouchesrequired:1];//several fingers

[ImageView addgesturerecognizer:tap];//Add gesture

//

2 Long Press

//

Uilongpressgesturerecognizer * longpress =[[uilongpressgesturerecognizer alloc]initwithtarget:self action:@ Selector (longpress:)];

//

[ImageView addgesturerecognizer:longpress];

//

3 Drag gestures

Uipangesturerecognizer * Pan =[[uipangesturerecognizer alloc]initwithtarget:self Action: @selector (pan:)];

[ImageView Addgesturerecognizer:pan];

//

4 rotation

Uirotationgesturerecognizer * Rotation =[[uirotationgesturerecognizer alloc]initwithtarget:self action: @selector ( Rotation:)];

[ImageView addgesturerecognizer:rotation];

//

5 pinch gesture

Uipinchgesturerecognizer * Pinch =[[uipinchgesturerecognizer alloc]initwithtarget:self action: @selector (pinch:)];

[ImageView Addgesturerecognizer:pinch];

6 Sweep gestures

Uiswipegesturerecognizer * Swipe=[[uiswipegesturerecognizer alloc]initwithtarget:self Action: @selector (swipe:)];

//

[Swipe setdirection:uiswipegesturerecognizerdirectionright];//gesture direction

[Self.view Addgesturerecognizer:swipe];

Additional setup after loading the view, typically from a nib.

}

-(void) Swipe: (uiswipegesturerecognizer*) Recognier

{

Finger on the screen to drag, sweep gesture interval finger off the screen trigger the listening method

CGRect frame =imageframe;

if (uiswipegesturerecognizerdirectionright==recognier.state) {

Uiimageview * imageview= (uiimageview*) [Self.view viewwithtag:10];

frame.origin.x+=111;

Imageview.frame=frame;

}

}

#pragma mark pinch gesture

-(void) Pinch: (uipinchgesturerecognizer*) recognizer

{

if (uigesturerecognizerstatechanged==recognizer.state) {

[Recognizer.view Settransform:cgaffinetransformmakescale (Recognizer.scale, Recognizer.scale)];

Recognizer.view.transform=cgaffinetransformscale (Recognizer.view.transform, Recognizer.scale, Recognizer.scale);

recognizer.scale=1;

}

}

#pragma mark rotation gesture at least two fingers

-(void) Rotation: (uirotationgesturerecognizer*) recognizer

{

if (uigesturerecognizerstatebegan==recognizer.state) {

Recognizer.view.transform=cgaffinetransformmakerotation (rotation);

NSLog (@ "Start ===%d", recognizer.state);

}

if (uigesturerecognizerstatechanged==recognizer.state) {

Rotation during the change process

Restore at end

1.

[Recognizer.view settransform:cgaffinetransformmakerotation (recognizer.rotation)];

Rotation+=recognizer.rotation;

NSLog (@ "%f in rotation", recognizer.rotation);

NSLog (@ "Rotation =======%f", rotation);

2.

[ImageView settransform:cgaffinetransformrotate (Recognizer.view.transform, recognizer.rotation)];//cumulative deformation The rotation of gesture recognition should be set to 0; the next trigger is based on the current rotation angle.

recognizer.rotation=0;

}else if (uigesturerecognizerstateended==recognizer.state)

{

[Recognizer.view settransform:cgaffinetransformidentity];

}

}

#pragma mark drag gesture

-(void) pan: (uipangesturerecognizer*) recognizer

{

/*

After dragging ends

*/

Cgpoint point = [recognizer TranslationInView:self.view];

NSLog (@ "X:%F; Y:%f ", POINT.X,POINT.Y);

Recognizer.view.center = Cgpointmake (recognizer.view.center.x + point.x, recognizer.view.center.y + point.y);

[Recognizer Settranslation:cgpointmake (0, 0) InView:self.view];

Uigesturerecognizerstatechanged will continue to be called

if (uigesturerecognizerstatechanged==recognizer.state) {

Cgpoint location =[recognizer LocationInView:self.view];

[Recognizer.view setcenter:location];

Cgpoint point = [recognizer TranslationInView:self.view];

[Recognizer.view settransform:cgaffinetransformmaketranslation (Point.x, Point.y)];

[Recognizer.view settransform:cgaffinetransformtranslate (Recognizer.view.transform, Point.x, Point.y)];

//

CGRect Targetrect =imageframe;

Targetrect.origin.x+=point.x;

Targetrect.origin.y+=point.y;

[Recognizer.view Setframe:targetrect];

//    }

else if (uigesturerecognizerstateended==recognizer.state)

//    {

[UIView animatewithduration:1 animations:^{

[Recognizer.view Setframe:imageframe];

//        }];

//    }

}

#pragma Mark Long Press

-(void) Longpress: (uilongpressgesturerecognizer*) recognizer

{

if (uigesturerecognizerstatebegan==recognizer.state)

{

NSLog (@ "long press");

Long-press gesture continuous gesture

[UIView animatewithduration:1 animations:^{

[Recognizer.view settransform:cgaffinetransformmakerotation (M_PI)];

}completion:^ (BOOL finished) {

Restore the view's deformation (pan-zoom rotation)

[Recognizer.view settransform:cgaffinetransformidentity];

}];

}else if (uigesturerecognizerstatechanged==recognizer.state)

{

[UIView animatewithduration:1 animations:^{

[Recognizer.view settransform:cgaffinetransformmakerotation (M_PI)];

//

}completion:^ (BOOL finished) {

Restore the view's deformation (pan-zoom rotation)

[Recognizer.view settransform:cgaffinetransformidentity];

//        }];

}

}

-(void) Tap: (uitapgesturerecognizer*) recognizer

{

NSLog (@ "point me Up");

CGRect Initframe =recognizer.view.frame;

CGRect Targeetframe=recognizer.view.frame;

targeetframe.origin.y+=320;

[UIView animatewithduration:1 animations:^{

[UIView Setanimationrepeatcount:2];

[UIView Setanimationrepeatautoreverses:yes];

[Recognizer.view Setframe:targeetframe];

}completion:^ (BOOL finished) {

[UIView animatewithduration:1 animations:^{

[Recognizer.view Setframe:initframe];

}];

}];

}

-(void) didreceivememorywarning {

[Super didreceivememorywarning];

Dispose of any resources the can be recreated.

}

@end

IOS gestures in a detailed