xcode 如何使用 UISwipeGestureRecognizer 为左/右滑动视图设置动画
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How to animate left/right swipe view using UISwipeGestureRecognizer
提问by Ujesh Patel
try to make swipe in single-view and it's working but not get animation and page indicatore bubble in bottom
尝试在单视图中进行滑动并且它正在工作但没有在底部获得动画和页面指示器气泡
- (void)viewDidLoad
{
[super viewDidLoad];
UISwipeGestureRecognizer *swipeleft = [[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(screenswipeleft)];
swipeleft.numberOfTouchesRequired=1;
swipeleft.direction=UISwipeGestureRecognizerDirectionLeft;
[self.view addGestureRecognizer:swipeleft];
UISwipeGestureRecognizer *swiperight = [[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(viewDidLoad)];
swiperight.numberOfTouchesRequired=1;
swiperight.direction=UISwipeGestureRecognizerDirectionRight;
[self.view addGestureRecognizer:swiperight];
UITextField *textField = [[UITextField alloc] initWithFrame:CGRectMake(10, 200, 300, 40)];
[self.view addSubview:textField];
NSLog(@"move left");
}
-(void)screenswipeleft {
UITextField *textField = [[UITextField alloc] initWithFrame:CGRectMake(10, 200, 300, 40)];
[self.view addSubview:textField];
NSLog(@"move right");
}
采纳答案by Ganesh Kumar
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
_leftSwipeGestureRecognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(handleSwipes:)];
_rightSwipeGestureRecognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(handleSwipes:)];
_leftSwipeGestureRecognizer.direction = UISwipeGestureRecognizerDirectionLeft;
_rightSwipeGestureRecognizer.direction = UISwipeGestureRecognizerDirectionRight;
[self.view addGestureRecognizer:_leftSwipeGestureRecognizer];
[self.view addGestureRecognizer:_rightSwipeGestureRecognizer];
}
- (void)handleSwipes:(UISwipeGestureRecognizer *)sender
{
if (sender.direction == UISwipeGestureRecognizerDirectionLeft) {
CGPoint labelPosition = CGPointMake(self.swipeLabel.frame.origin.x - 100.0, self.swipeLabel.frame.origin.y);
self.swipeLabel.frame = CGRectMake( labelPosition.x , labelPosition.y , self.swipeLabel.frame.size.width, self.swipeLabel.frame.size.height);
}
if (sender.direction == UISwipeGestureRecognizerDirectionRight) {
CGPoint labelPosition = CGPointMake(self.swipeLabel.frame.origin.x + 100.0, self.swipeLabel.frame.origin.y);
self.swipeLabel.frame = CGRectMake( labelPosition.x , labelPosition.y , self.swipeLabel.frame.size.width, self.swipeLabel.frame.size.height);
}
}
回答by Saheb Roy
Suppose you want to animate the UITextField. And your UITextField has a CGRect with starting point of x - 50, y - 100;
假设您要为 UITextField 设置动画。你的 UITextField 有一个 CGRect，起点为 x - 50, y - 100；
@implementation myViewController{
UITextField *myTextField; //Declaring a textfield as an instance variable (global).
}
-(void)viewDidLoad{
myTextField = [UITextField alloc]initWithFrame:CGRectMake(50,100,100,50)];//adding memory and setting its initial position
//your other codes.
}
-(void)screenswipeleft {
[UIView animateWithDuration:3 animations:^{
myTextField.frame = CGRectMake:(-75,100,100,50); //setting the same textfield in a position of -75 only showing 1/4th of the textfield.
//this block animation would make the textfield animate from its starting position to this position in 3 seconds. (animateWithDuration:3 here u mention its duration).
}];
}
Apply same logic to others and you will get the animation you want.
将相同的逻辑应用于其他人，您将获得所需的动画。
回答by Amrendra Pratap Singh
Try this.
尝试这个。
-(void)screenswipeleft
{
[UIView beginAnimations:nil context:nil];
[UIView setAnimationDuration:0.4];
textField.frame = CGRectMake(10, 200, 300, 40)];
[UIView commitAnimations]
}
