How to give image Animations to multiple images at

问题:

How to give 'image' Animations to multiple images at Different Locations in a 'UIView'?

1) I had 3 images.

2) i want to Add these 3 Images at 3 different locations animatedly, means add one by one images animatedly with some duration??

How can I achieve this?

回答1:

As per your requirement you want to animate image one by one

for that purpose use completion block of first image animation to animate second image and so on like below code

UIImageView *imgView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:[NSString stringWithFormat:@"-t%d",1]]];
[imgView setBackgroundColor:[UIColor redColor]];

UIImageView *imgView2 = [[UIImageView alloc] initWithImage:[UIImage imageNamed:[NSString stringWithFormat:@"-t%d",2]]];
[imgView2 setBackgroundColor:[UIColor redColor]];

UIImageView *imgView3 = [[UIImageView alloc] initWithImage:[UIImage imageNamed:[NSString stringWithFormat:@"-t%d",2]]];
[imgView3 setBackgroundColor:[UIColor redColor]];

[self.view addSubview:imgView];
[self.view addSubview:imgView2];
[self.view addSubview:imgView3];

[UIView animateWithDuration:0.5 delay:1.0 options:UIViewAnimationOptionLayoutSubviews animations:^{

    [imgView setFrame:CGRectMake(0, 0, 150, 150)];


} completion:^(BOOL finished) {

    [UIView animateWithDuration:0.5 delay:1.0 options:UIViewAnimationOptionLayoutSubviews animations:^{
        [imgView2 setFrame:CGRectMake(self.view.frame.size.width - 150, 0, 150, 150)];

    } completion:^(BOOL finished) {

        [UIView animateWithDuration:0.5 delay:1.0 options:UIViewAnimationOptionLayoutSubviews animations:^{
            [imgView3 setFrame:CGRectMake(0, self.view.frame.size.height - 150, 150, 150)];

        } completion:^(BOOL finished) {


        }];

    }];

}];

It will Help you :)

回答2:

Lets say 3 views are _redView, _greenView and _blueView check out following method to move those from one to another location. I have used random location you can give specific if you want. Here you can have working example of it just select ViewAnimationsTest project of the work space and run.

- (int) randomFloatingGenerator : (int) max{
    return arc4random() % max;
}

- (void) animate3Views {
    [UIView animateWithDuration:2.0
                     animations:^{
                         _redView.transform = CGAffineTransformMakeTranslation([self randomFloatingGenerator : 270], [self randomFloatingGenerator:480]);
                         _greenView.transform = CGAffineTransformMakeTranslation([self randomFloatingGenerator : 270], [self randomFloatingGenerator:480]);
                         _blueView.transform = CGAffineTransformMakeTranslation([self randomFloatingGenerator : 270], [self randomFloatingGenerator:480]);

                     } completion:^(BOOL finished) {
                         [self animate3Views];//if don;t want continuous translation remove this line
                     }];
}

回答3:

Probably the easiest way to do this is to use 3 animations called with delay.

    for (NSInteger i = 0; i < 3; i++) {
        UIView *view = myViews[i];
        CGRect frame = [self frameForViewAtIndex: i];
        NSTimeInterval duration = 0.5;
        NSTimeInterval delay = i * 0.5;

        [UIView animateWithDuration: duration delay: delay options: 0 animations: ^{
            view.frame = frame;
        } completion: nil];
    }

Where myViews is array of views to be animated, frameForViewAtIndex: is the method that returns frame for corresponding view.