5.2 GestureRecognizer---UI手势
2019-04-15 本文已影响0人
草根小强
GestureRecognizer---UI手势
#import "AppDelegate.h"
#import "HomeViewController.h"
@interface AppDelegate ()
@end
@implementation AppDelegate
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
// Override point for customization after application launch.
_window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
_window.backgroundColor = [UIColor whiteColor];
[_window makeKeyAndVisible];
HomeViewController *home = [[HomeViewController alloc] init];
UINavigationController *nav =[[UINavigationController alloc] initWithRootViewController:home];
_window.rootViewController = nav;
return YES;
}
基础控制器
#import <UIKit/UIKit.h>
#define COLOR [UIColor colorWithRed:arc4random()%255 / 255.0 green:arc4random()%255 / 255.0 blue:arc4random()%255 / 255.0 alpha:1]
@interface BasseViewController : UIViewController
@end
#import "BasseViewController.h"
@interface BasseViewController ()
@end
@implementation BasseViewController
- (void)viewDidLoad {
[super viewDidLoad];
self.title = NSStringFromClass([self class]);
//随机颜色
//取值范围0 - 1 arc4random() % 255取值0-254 个值 然后除 255.0 就是0-1范围，
//取值范围 0 - 1
UIColor *color = [UIColor colorWithRed:arc4random()%255 / 255.0 green:arc4random()%255 / 255.0 blue:arc4random()%255 / 255.0 alpha:1];
self.view.backgroundColor = color;
//产生一个灰度颜色 只包含黑白两种颜色 1 表示黑 0表示白
// UIColor *color1 = [UIColor colorWithWhite:0.5 alpha:1];
}
@end
导航栏视图控制器，
#import <UIKit/UIKit.h>
@interface HomeViewController : UIViewController
@end
#import "HomeViewController.h"
@interface HomeViewController ()
@end
@implementation HomeViewController
- (void)viewDidLoad {
[super viewDidLoad];
NSArray *arr = @[@"TouchViewController",@"TapViewController",@"LongPressViewController",@"SwipeViewController",@"PanViewController",@"RotationViewController",@"PinchViewController",@"DoubleViewController"];
for (int i = 0; i < arr.count; i ++) {
UIButton *button = [[UIButton alloc] initWithFrame:CGRectMake(0, 84 + 64*i, [UIScreen mainScreen].bounds.size.width, 44)];
button.backgroundColor = [UIColor blueColor];
[button addTarget:self action:@selector(buttonClicked:) forControlEvents:UIControlEventTouchUpInside];
[button setTitle:arr[i] forState:UIControlStateNormal];
[self.view addSubview:button];
}
}
- (void)buttonClicked:(UIButton *)button{
Class class = NSClassFromString(button.titleLabel.text);
UIViewController *vc = [[class alloc] init];
[self.navigationController pushViewController:vc animated:YES];
}
@end
根试图控制器
#import <UIKit/UIKit.h>
@interface HomeViewController : UIViewController
@end
#import "HomeViewController.h"
@interface HomeViewController ()
@end
@implementation HomeViewController
- (void)viewDidLoad {
[super viewDidLoad];
NSArray *arr = @[@"TouchViewController",@"TapViewController",@"LongPressViewController",@"SwipeViewController",@"PanViewController",@"RotationViewController",@"PinchViewController",@"DoubleViewController"];
for (int i = 0; i < arr.count; i ++) {
UIButton *button = [[UIButton alloc] initWithFrame:CGRectMake(0, 84 + 64*i, [UIScreen mainScreen].bounds.size.width, 44)];
button.backgroundColor = [UIColor blueColor];
[button addTarget:self action:@selector(buttonClicked:) forControlEvents:UIControlEventTouchUpInside];
[button setTitle:arr[i] forState:UIControlStateNormal];
[self.view addSubview:button];
}
}
- (void)buttonClicked:(UIButton *)button{
Class class = NSClassFromString(button.titleLabel.text);
UIViewController *vc = [[class alloc] init];
[self.navigationController pushViewController:vc animated:YES];
}
@end
单击手势
#import "BasseViewController.h"
@interface TouchViewController : BasseViewController
@end
#import "TouchViewController.h"
@interface TouchViewController ()
@end
@implementation TouchViewController
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view.
UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(20, 84, 120, 60)];
label.text= @"让子弹多飞一下";
label.tag = 11;
label.backgroundColor = [UIColor whiteColor];
[self.view addSubview:label];
}
static CGPoint labelSrcOrigin;
static CGPoint userSrcOrigin;
- (void) touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{
//如何获取用户触摸的点
// //1. 单点
// //获取触摸类型
// UITouch *touch = [touches anyObject];
// //获取视图对象的地点
// CGPoint point = [touch locationInView:self.view];
//
// //打印触摸点的地址
// //NSStringFromCGPoint(point) 将point转换成字符
// NSLog(@"%@",NSStringFromCGPoint(point));
//2. 多点
for (UITouch *touch in [event allTouches]){
CGPoint point = [touch locationInView:self.view];
NSLog(@"%@",NSStringFromCGPoint(point));
}
UILabel *label = (id)[self.view viewWithTag:11];
labelSrcOrigin = label.frame.origin;
UITouch *touch = [touches anyObject];
userSrcOrigin = [touch locationInView:self.view];
}
- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event{
UITouch * touch = [touches anyObject];
CGPoint pstPoint = [touch locationInView:self.view];
//用户触摸移动产生的偏差量
CGFloat _x = pstPoint.x - userSrcOrigin.x;
CGFloat _y = pstPoint.y - userSrcOrigin.y;
UILabel * label = (id)[self.view viewWithTag:11];
label.frame = CGRectMake(labelSrcOrigin.x + _x, labelSrcOrigin.y + _y, label.frame.size.width, label.frame.size.height);
}
- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event{
}
- (void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event{
}
@end
双击手势
#import "TapViewController.h"
@interface TapViewController ()
@end
@implementation TapViewController
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view.
// UIGestureRecognizer 手势父类
// [重点] 任何一个手势对象 不能被添加到两个视图上
// 第一种
// //双击手势
// UITapGestureRecognizer *doubleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(doubleTapped:)];
// doubleTap.numberOfTapsRequired = 2;
//
// //所有UIView 的对像都有一个添加手势的方法
// [self.view addGestureRecognizer:doubleTap];
// //双击手势
UITapGestureRecognizer * doubleTgr = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(doubleTapped:)];
doubleTgr.numberOfTapsRequired = 2;
[self.view addGestureRecognizer:doubleTgr];
//
UITapGestureRecognizer * tgr = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapped:)];
//numberOfTapsRequired = 1为单击
tgr.numberOfTapsRequired = 1;
//需要几只手指共同点击(这里是两只手指)
tgr.numberOfTouchesRequired = 2;
//响应tgr必须在doubleTgr不成立的情况下
[tgr requireGestureRecognizerToFail:doubleTgr];
// 所有UIView的对象都有一个添加手势的方法
// [self.view addGestureRecognizer:tgr];
// UITapGestureRecognizer *tgr = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapped:)];
// //区分单机和双击 1为单机 2 为双击 3 为三击
// tgr.numberOfTapsRequired = 1;
// tgr.numberOfTapsRequired = 2;
// //响应tgr必须在doubleTgr不成立的情况下
// [tgr requireGestureRecognizerToFail:doubleTap];
//
// //需要几只手指共同点击
// tgr.numberOfTapsRequired = 2;
// [self.view addGestureRecognizer:tgr];
//
}
- (void)tapped:(UITapGestureRecognizer *)tgr{
self.view.backgroundColor =[UIColor yellowColor];
}
- (void)doubleTapped:(UITapGestureRecognizer *)tgr{
self.view.backgroundColor = [UIColor whiteColor];
}
@end
长按手势
#import "LongPressViewController.h"
#define COLOR [UIColor colorWithRed:arc4random()%255 / 255.0 green:arc4random()%255 / 255.0 blue:arc4random()%255 / 255.0 alpha:1]
@interface LongPressViewController ()
@end
@implementation LongPressViewController
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view.
//创建长按手势对象
UILongPressGestureRecognizer *logr = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(pressed:)];
//长按时长
logr.minimumPressDuration = 3;
//需要的手指数
logr.numberOfTouchesRequired = 2;
//将手势添加到视图上
[self.view addGestureRecognizer:logr];
}
/*
手势的状态：
手势开始
手势结束
手势失败
*/
- (void)pressed:(UILongPressGestureRecognizer *)logr{
//代表手势开始
if (logr.state == UIGestureRecognizerStateBegan) {
self.view.backgroundColor = [UIColor whiteColor];
}
}
@end
滑动手势
#import "SwipeViewController.h"
@interface SwipeViewController ()
@end
@implementation SwipeViewController
- (void)viewDidLoad {
[super viewDidLoad];
//滑动手势
UISwipeGestureRecognizer *sgr = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipped:)];
// UISwipeGestureRecognizerDirectionRight
// UISwipeGestureRecognizerDirectionLeft
// UISwipeGestureRecognizerDirectionUp
// UISwipeGestureRecognizerDirectionDown
//滑动的方向
//右滑
//一个滑动手势只能监听一个方向的滑动 (默认方向为右)
sgr.direction = UISwipeGestureRecognizerDirectionRight;
[self.view addGestureRecognizer:sgr];
}
- (void)swipped:(UISwipeGestureRecognizer *)swip{
self.view.backgroundColor = [UIColor orangeColor];
}
@end
捏合手势
#import "PinchViewController.h"
@interface PinchViewController ()
@end
@implementation PinchViewController
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view.
UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(20, 81, 150, 180)];
imageView.image = [UIImage imageNamed:@"QFImage_2016-01-26_14.48.9"];
imageView.tag = 11;
imageView.userInteractionEnabled = YES;
[self.view addSubview:imageView];
//【捏合手势】
UIPinchGestureRecognizer * pinch = [[UIPinchGestureRecognizer alloc] initWithTarget:self action:@selector(pinching:)];
[imageView addGestureRecognizer:pinch];
}
- (void)pinching:(UIPinchGestureRecognizer *)pinch {
//每一秒执行一次
//1, 1 :
//2, 1 : 1.2 1
//3, 1 : 1.2 1
//2W 4W 16W 8
// 2 4 8
//获取图片的tag 也就是 图片
UIImageView * imageView = (id)[self.view viewWithTag:11];
//imageView.transform 表示的是时间
//pinch.scale 表示的是x
//pinch.scale表示的是y
imageView.transform = CGAffineTransformScale(imageView.transform, pinch.scale, pinch.scale);
//缩放比例执行完一次就置为与当前值一致的比例
pinch.scale = 1;
// static CGAffineTransform trans;
// if (pinch.state == UIGestureRecognizerStateBegan) {
// trans = imageView.transform;
// }
// //获取缩放比
// CGFloat scale = pinch.scale;
//
// imageView.transform = CGAffineTransformScale(trans, scale, scale);
}
@end
旋转手势
#import "RotationViewController.h"
@interface RotationViewController ()
@end
@implementation RotationViewController
- (void)viewDidLoad {
[super viewDidLoad];
UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(20, 81, 150, 180)];
imageView.image = [UIImage imageNamed:@"QFImage_2016-01-26_14.48.9"];
imageView.tag = 11;
imageView.userInteractionEnabled = YES;
[self.view addSubview:imageView];
//旋转手势
UIRotationGestureRecognizer *rgr = [[UIRotationGestureRecognizer alloc] initWithTarget:self action:@selector(rotating:)];
// [imageView addGestu]
[imageView addGestureRecognizer:rgr];
}
- (void)rotating:(UIRotationGestureRecognizer *)rgr {
UIImageView * imageView = (id)[self.view viewWithTag:11];
/*
imageView.transform = CGAffineTransformRotate(imageView.transform, rgr.rotation);
rgr.rotation = 0;*/
static CGAffineTransform trans;
if (rgr.state == UIGestureRecognizerStateBegan) {
//手势开始时，记录形变状态
trans = imageView.transform;
}
//获取与初始状态的形变差
CGFloat del = rgr.rotation;
//根据初始状态与形变差获得当前状态
//第一个参数为形变基础
//第二个参数为形变量
imageView.transform = CGAffineTransformRotate(trans, del);
}
@end
拖动手势
#import "PanViewController.h"
@interface PanViewController ()
@end
@implementation PanViewController
- (void)viewDidLoad {
[super viewDidLoad];
//拖动手势
UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(20, 80, 120, 60)];
label.text =@"xiaoqiang";
label.tag = 11;
label.userInteractionEnabled = YES;
[self.view addSubview:label];
UIPanGestureRecognizer *pan = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(panned:)];
[label addGestureRecognizer:pan];
}
- (void)panned:(UIPanGestureRecognizer *)pan{
//1.在手势开始时，记录初始状态
//2.根据手势，获取发生变化的差值
//3.根据差值得到当前状态
UILabel *label = (id)[self.view viewWithTag:11];
static CGPoint srcOrigin;
if (pan.state == UIGestureRecognizerStateBegan) {
srcOrigin = label.frame.origin;
}
CGPoint delPoint = [pan translationInView:self.view];
//当前位置 = 初始位置 + 差值
label.frame = CGRectMake(srcOrigin.x +delPoint.x, srcOrigin.y + delPoint.y, label.frame.size.width, label.frame.size.height) ;
}
@end
GestureRecognizer---UI手势.png
