IOS gesture App

. h file

#import <UIKit/UIKit.h>

@interface Rootviewcontroller:uiviewcontroller

{

Uiimageview *imageview;

}

@end

. m file

#import "RootViewController.h"

@interface Rootviewcontroller ()



@end

@implementation Rootviewcontroller

-(void) Viewdidload {

[Super Viewdidload];

Add a background color to a view
Self.view.backgroundColor =[uicolorwhitecolor];


Create Uiimageview
ImageView =[[uiimageviewalloc]initwithframe:cgrectmake (80, 100, 100, 100)];

Imageview.backgroundcolor =[uicolorredcolor];

[Self.view Addsubview:imageview];
Turn on Interaction
imageview.userinteractionenabled = YES;

Implement a click Method

UITapGestureRecognizer *tap =[[uitapgesturerecognizeralloc]initwithtarget:selfaction: @selector (TapHand:)];

Click Count

tap.numberoftapsrequired = 1;

[ImageView Addgesturerecognizer:tap];

[Tap release];



Implementing a long-press method

Uilongpressgesturerecognizer *longpress =[[uilongpressgesturerecognizeralloc]initwithtarget:selfaction: @selector (longpress:)];

How long does it take to work?

Longpress.minimumpressduration = 2;

Allowable offset distance

longpress.allowablemovement = 100;

[Imageviewaddgesturerecognizer:longpress];

[Longpress release];

Swipe gestures

Uiswipegesturerecognizer *swip =[[uiswipegesturerecognizeralloc]initwithtarget:selfaction: @selector (swipPress:)] ;

Direction of Swipe, (left)

Swip.direction=uiswipegesturerecognizerdirectionleft;

[ImageView ADDGESTURERECOGNIZER:SWIP];

[Swip release];

Rotate gestures

Uirotationgesturerecognizer *rotation =[[uirotationgesturerecognizeralloc]initwithtarget:selfaction: @selector ( ROTATIONP:)];

[Imageviewaddgesturerecognizer:rotation];

[Rotation release];

Drag and Drop method

Uipangesturerecognizer *pan =[[uipangesturerecognizeralloc]initwithtarget:selfaction: @selector (HandlePan:)];

[ImageView Addgesturerecognizer:pan];

[Pan release];

}

click Method

-(void) Taphand: (uitapgesturerecognizer*) Tap

{



}

Long-Press method

-(void) Longpress: (Uilongpressgesturerecognizer *) LONGP

{

if (longp.state = = Uigesturerecognizerstatebegan) {

NSLog (@ "start");

}else if (longp.state = = uigesturerecognizerstatechanged)

{

NSLog (@ "mobile");

}else if (longp.state = = uigesturerecognizerstateended)

{

NSLog (@ "End");

}

}

Swipe method

-(void) Swippress: (uiswipegesturerecognizer*) Swip

{

if (swip.direction==uiswipegesturerecognizerdirectionleft) {

NSLog (@ "picture movement");

}

}

Rotation Gesture Method

-(void) Rotationp: (Uirotationgesturerecognizer *) Rotationp

{

Rotationp.view.transform=cgaffinetransformrotate (RotationP.view.transform, rotationp.rotation);

rotationp.rotation = 0;

}

Drag gesture Method

-(void) Handlepan: (uipangesturerecognizer*) recognizer

{

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

Recognizer.view.center=cgpointmake (recognizer.view.center.x+translation.x,recognizer.view.center.y+ TRANSLATION.Y);

[Recognizer SetTranslation:CGPointZeroinView:self.view];

if (recognizer.state==uigesturerecognizerstateended) {

Cgpoint velocity = [recognizer VelocityInView:self.view];

CGFloat magnitude = sqrtf ((velocity.x * velocity.x) + (VELOCITY.Y * velocity.y));

CGFloat slidemult = magnitude/200;

NSLog (@ "magnitude:%f, Slidemult:%f", magnitude, slidemult);

float Slidefactor = 0.1*slidemult;//increase for more a slide

Cgpoint finalpoint = Cgpointmake (recognizer.view.center.x + (velocity.x * slidefactor), Recognizer.view.center.y + ( VELOCITY.Y * slidefactor));

Finalpoint.x = MIN (MAX (finalpoint.x, 0), self.view.bounds.size.width);

Finalpoint.y = MIN (MAX (finalpoint.y,0), self.view.bounds.size.height);

[Uiviewanimatewithduration:slidefactor*2 delay:0options:uiviewanimationoptioncurveeaseoutanimations:^{ Recognizer.view.center=finalpoint;} Completion:nil];

}

}

This article is from the iOS blog, so be sure to keep this source http://10136044.blog.51cto.com/10126044/1679358

IOS gesture App