IOS-滑动手势添加
IOS-滑动手势添加
1.新建一个Single View Application项目，选下一步，项目命名为swipeGestureTest
2.修改ViewController类文件
（1）在ViewController.h文件中，添加属性
@property (nonatomic,strong) UISwipeGestureRecognizer *left;
@property (nonatomic,strong) UISwipeGestureRecognizer *right;
@property (nonatomic,strong) UISwipeGestureRecognizer *up;
@property (nonatomic,strong) UISwipeGestureRecognizer *down;
@property (nonatomic,strong) UILabel *swipeLabel;
（2）在ViewController.m文件中，添加代码
@synthesize left;
@synthesize up;
@synthesize right;
@synthesize down;
（3）- (void)viewDidLoad函数中，添加代码
self.left=[[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(handleSwipes:)];
self.left.direction=UISwipeGestureRecognizerDirectionLeft;
[self.view addGestureRecognizer:self.left];
self.right=[[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(handleSwipes:)];
self.right.direction=UISwipeGestureRecognizerDirectionRight;
[self.view addGestureRecognizer:self.right];
self.up=[[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(handleSwipes:)];
self.up.direction=UISwipeGestureRecognizerDirectionUp;
[self.view addGestureRecognizer:self.up];
self.down=[[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(handleSwipes:)];
self.down.direction=UISwipeGestureRecognizerDirectionDown;
[self.view addGestureRecognizer:self.down];
self.swipeLabel=[[UILabel alloc] initWithFrame:CGRectMake(50, 50, 200, 20)];
self.swipeLabel.text=@"Label";
[self.swipeLabel setBackgroundColor:[UIColor greenColor]];
[self.view addSubview:self.swipeLabel];
（4）添加手势响应函数- (void)handleSwipes:(UISwipeGestureRecognizer *)sender
{
if (sender.direction == UISwipeGestureRecognizerDirectionLeft) {
CGPoint labelPosition = CGPointMake(self.swipeLabel.frame.origin.x - 10.0, self.swipeLabel.frame.origin.y);
self.swipeLabel.frame = CGRectMake( labelPosition.x , labelPosition.y , self.swipeLabel.frame.size.width, self.swipeLabel.frame.size.height);
self.swipeLabel.text = @"你在往左边滑动....";
}
if (sender.direction == UISwipeGestureRecognizerDirectionRight) {
CGPoint labelPosition = CGPointMake(self.swipeLabel.frame.origin.x + 10.0, self.swipeLabel.frame.origin.y);
self.swipeLabel.frame = CGRectMake( labelPosition.x , labelPosition.y , self.swipeLabel.frame.size.width, self.swipeLabel.frame.size.height);
self.swipeLabel.text = @"你在往右边滑动....";
}
if (sender.direction == UISwipeGestureRecognizerDirectionUp) {
CGPoint labelPosition = CGPointMake(self.swipeLabel.frame.origin.x, self.swipeLabel.frame.origin.y-10.0);
self.swipeLabel.frame = CGRectMake( labelPosition.x , labelPosition.y , self.swipeLabel.frame.size.width, self.swipeLabel.frame.size.height);
self.swipeLabel.text = @"你在往上边滑动....";
}
if (sender.direction == UISwipeGestureRecognizerDirectionDown) {
CGPoint labelPosition = CGPointMake(self.swipeLabel.frame.origin.x, self.swipeLabel.frame.origin.y+10.0);
self.swipeLabel.frame = CGRectMake( labelPosition.x , labelPosition.y , self.swipeLabel.frame.size.width, self.swipeLabel.frame.size.height);
self.swipeLabel.text = @"你在往下边滑动....";
}
}
3 运行
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