IOS Gesture Learning (click, long Press, swipe, drag, rotate, pinch to zoom)

IOS Gesture Learning (click, long Press, swipe, drag, rotate, pinch to zoom)

Click UITapGestureRecognizer

Long press Uilongpressgesturerecognizer

Swipe Uiswipegesturerecognizer

Dragging Uipangesturerecognizer

Rotary Uirotationgesturerecognizer

Pinch to zoom Uipinchgesturerecognizer

The detailed code is as follows:

#import "ViewController.h"

@interface Viewcontroller () <UIGestureRecognizerDelegate>
{
UIView * _view;
}
@end

@implementation Viewcontroller

-(void) Viewdidload {
[Super Viewdidload];

Create a View
_view=[[uiview alloc]initwithframe:cgrectmake (0, 0, 200, 200)];
_view.backgroundcolor=[uicolor Bluecolor];
_view.center=self.view.center;
[Self.view Addsubview:_view];


Click
UITapGestureRecognizer * Tap=[[uitapgesturerecognizer alloc]initwithtarget:self Action: @selector (TapClick)];

Number of clicks currently required
tap.numberoftapsrequired=2;
[Tap Setnumberoftapsrequired:2]; Ditto

Set the hand index required for the current departure time
tap.numberoftouchesrequired=2; Option key to simulate finger
[Tap Setnumberoftouchesrequired:2]; Ditto

[_view Addgesturerecognizer:tap];

Long Press
Uilongpressgesturerecognizer * Longpress=[[uilongpressgesturerecognizer alloc]initwithtarget:self action: @selector (Longpressclick)];

Moving 10 units during a long press also counts as long as the
longpress.allowablemovement=10;
[Longpress Setallowablemovement:10]; Ditto

Min. long press time
longpress.minimumpressduration=2;
[_view addgesturerecognizer:longpress];



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

Direction to the right--
Swipe.direction=uiswipegesturerecognizerdirectionright;
[_view Addgesturerecognizer:swipe];


Swipe
Uiswipegesturerecognizer * Swipe2=[[uiswipegesturerecognizer alloc]initwithtarget:self action: @selector ( SwipeAction2)];

Towards the left, <--.
Swipe2.direction=uiswipegesturerecognizerdirectionleft;
[_view Addgesturerecognizer:swipe2];

Swipe
Uiswipegesturerecognizer * Swipe3=[[uiswipegesturerecognizer alloc]initwithtarget:self action: @selector ( SwipeAction3)];

Towards the top??
Swipe3.direction=uiswipegesturerecognizerdirectionup;
[_view Addgesturerecognizer:swipe3];


Swipe
Uiswipegesturerecognizer * Swipe4=[[uiswipegesturerecognizer alloc]initwithtarget:self action: @selector ( SWIPEACTION4)];

The direction of the downward side??
Swipe4.direction=uiswipegesturerecognizerdirectiondown;
[_view Addgesturerecognizer:swipe4];

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

[_view Addgesturerecognizer:pan];


Rotating
Uirotationgesturerecognizer * Rotation=[[uirotationgesturerecognizer alloc]initwithtarget:self action: @selector ( Rotation:)];
rotation.delegate=self;
[_view addgesturerecognizer:rotation];


Pinch to zoom
Uipinchgesturerecognizer * Pinch=[[uipinchgesturerecognizer alloc]initwithtarget:self action: @selector (pinch:)];
pinch.delegate=self;
[_view Addgesturerecognizer:pinch];

}


#pragma mark-click
-(void) Tapclick
{
NSLog (@ "click");
}
#pragma mark-long press
-(void) Longpressclick
{
NSLog (@ "long press");
}

#pragma mark-Slide right
-(void) swipeaction
{
NSLog (@ "right");
}
#pragma mark-Slide left
-(void) SwipeAction2
{
NSLog (@ "left");
}
#pragma mark-Slide up
-(void) SwipeAction3
{
NSLog (@ "up");
}
#pragma mark-slipped
-(void) SwipeAction4
{
NSLog (@ "down");
}

#pragma mark-drag-and-drop movement
-(void) Panaction: (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 each time, eliminate the coordinate overlay
[Pan Settranslation:cgpointzero InView:pan.view];
}

#pragma mark-Rotate
-(void) Rotation: (Uirotationgesturerecognizer *) rote
{
Gets the degree of the current rotation
CGFloat rotation=rote.rotation;

Rotation through affine transformations
_view.transform=cgaffinetransformrotate (_view.transform, rotation);
Prevent rotation overlay, clear zero
rote.rotation=0;

}

#pragma mark-Zoom pinch
-(void) Pinch: (Uipinchgesturerecognizer *) pinch
{
Get scale
CGFloat Scale=pinch.scale;

Scaling with affine transformations
_view.transform=cgaffinetransformscale (_view.transform, scale, scale);

Prevent scale Overlay
pinch.scale=1;


}

#pragma the mark-proxy method enables rotation + zoom kneading to be performed simultaneously
-(BOOL) Gesturerecognizer: (Uigesturerecognizer *) Gesturerecognizer Shouldrecognizesimultaneouslywithgesturerecognizer: (Uigesturerecognizer *) Othergesturerecognizer
{
return YES;
}


-(void) didreceivememorywarning {
[Super didreceivememorywarning];
Dispose of any resources the can be recreated.
}

@end

Points to note:

1. The option key on the keyboard simulates the finger

2. for the same view , when dragged, the left-to-right upward downward gesture fails.

Copyright NOTICE: This article for Bo Master original article, without Bo Master permission not reproduced.

IOS gesture Learning (tap, long press, swipe, drag, rotate, pinch to zoom)