我需要在屏幕上移动5个图像并执行过渡效果，例如旋转 - >旋转动画完成时：移动（移动完成时：然后重复处理）
我可以获得1张图片来完成这项工作，但效果很好。
我遇到的问题是我需要为5张图片做这件事;要求是所有图像（或imageViews）都需要动画同时运行。
我使用一个自定义对象，里面有一个UIImageView
-(void)stopRepeatingAnimationForView:(UIView *)view
{
self.enableRepeatingAnimation = NO;
[view.layer removeAllAnimations];
}
- (void)startRepeatingAnimationForView:(UIView *)view
{
self.enableRepeatingAnimation = YES;
[self repeatingAnimationForView:view];
}
- (void)repeatingAnimationForView:(UIView *)view
{
//VICAirplane *planeObj = [self.airplanes objectAtIndex:0];
for (VICAirplane *planeObj in self.airplanes) {
[UIView animateWithDuration:3
delay:1
options:UIViewAnimationOptionCurveLinear
animations:^{
planeObj.imageView.transform = CGAffineTransformRotate(planeObj.imageView.transform, planeObj.angleToRotate);
} completion:^(BOOL finished) {
if (finished==YES) {
[UIView animateWithDuration:5
delay:0.0
options:UIViewAnimationOptionCurveLinear
animations:^{
planeObj.imageView.center = planeObj.rotateToLocation;
} completion:^(BOOL finished) {
if (finished==YES) {
if ( self.enableRepeatingAnimation )
{
CGPoint rotateToLocation = [self generateRandomLocation];
planeObj.rotateToLocation = rotateToLocation;
[self performSelector:@selector(repeatingAnimationForView:) withObject:view afterDelay:0];
}
}
}];
}
}];
} // next
}
如果通过数组移除循环或只是使其成为1长度数组，则动画可以正常工作。
但是如果我添加多个动画都是同一时间，并且它们开始失去完成状态并最终造成很多混乱。
我想做的是：
但我不确定如何使其适用于存储在数组中的多个uiimageviews
有办法做到这一点吗？
答案 0 :(得分：0)
如果我理解你的问题，下面的代码应该做你想要的。它旨在按以下顺序执行以下操作：
现在，对于我的代码，我创建了VICAirplane作为UIView的简单子类，它具有单个属性：
@property (assign,nonatomic) CGPoint rotateToLocation。
基本上，您尝试使用单个for循环来迭代对象，但如果在每个动画期间迭代数组，它会更好。你可以用我在下面显示的方式链接它们，但是你也可以为动画链的每个“链接”创建单独的方法，然后在每个方法上迭代一次数组。在任何一种情况下，您都需要在动画块中迭代数组 in / during ，而不是在它之外。当你在它之外迭代时（正如你的代码在上面做的那样），你正在为每个对象创建一个单独的动画块，所有这些都将被独立处理。
无论如何，下面的代码创建了5个彩色方块，这些方块在连续动画循环中以随机方式旋转然后进行翻译。
// VICAirplane.h
#import <UIKit/UIKit.h>
@interface VICAirplane : UIView
@property (assign, nonatomic) CGPoint rotateToLocation;
@end
// VICAirplane.m
#import "VICAirplane.h"
@implementation VICAirplane
@end
// ViewController.h
#import <UIKit/UIKit.h>
@interface ViewController : UIViewController
@end
// ViewController.m
#import "ViewController.h"
#import "VICAirplane.h"
@interface ViewController () {
}
@property (strong, nonatomic) NSMutableArray *views;
@property (assign, nonatomic) BOOL enableRepeatingAnimation;
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
[self setupUserInterface];
}
- (void)viewDidAppear:(BOOL)animated {
[super viewDidAppear:animated];
[self startRepeatingAnimation];
}
- (void)setupUserInterface {
self.views = [NSMutableArray array];
for (int i = 0; i < 5; i = i + 1) {
VICAirplane *newView = [[VICAirplane alloc] initWithFrame:CGRectMake((i * 100) + 20, (i * 100) + 20, 80, 80)];
switch (i % 4) {
case 0:
newView.backgroundColor = [UIColor blueColor];
break;
case 1:
newView.backgroundColor = [UIColor redColor];
break;
case 2:
newView.backgroundColor = [UIColor greenColor];
break;
case 3:
newView.backgroundColor = [UIColor brownColor];
break;
case 4:
newView.backgroundColor = [UIColor purpleColor];
break;
default:
break;
}
[self.views addObject:newView];
[self.view addSubview:newView];
}
}
- (CGPoint)generateRandomLocation {
CGFloat x = (CGFloat)arc4random_uniform(600);
CGFloat y = (CGFloat)arc4random_uniform(600);
return CGPointMake(x, y);
}
-(void)stopRepeatingAnimation {
self.enableRepeatingAnimation = NO;
[self.view.layer removeAllAnimations];
}
- (void)startRepeatingAnimation {
self.enableRepeatingAnimation = YES;
for (VICAirplane *subview in self.views) {
subview.rotateToLocation = [self generateRandomLocation];
}
[self repeatingAnimation];
}
- (void)repeatingAnimation {
[UIView animateWithDuration:3
delay:1
options:UIViewAnimationOptionCurveLinear
animations:^{
for (UIView *subview in self.views) {
// Just a random rotation between -2π and 2π
CGFloat rotationAngle = (arc4random_uniform(400 * M_PI) - (200 * M_PI)) / 100;
subview.transform = CGAffineTransformRotate(subview.transform, rotationAngle);
}
}
completion:^(BOOL finished) {
if (finished==YES) {
[UIView animateWithDuration:5
delay:0.0
options:UIViewAnimationOptionCurveLinear
animations:^{
for (VICAirplane *subview in self.views) {
subview.center = subview.rotateToLocation;
}
}
completion:^(BOOL finished) {
if (finished==YES) {
if (self.enableRepeatingAnimation) {
for (VICAirplane *subview in self.views) {
subview.rotateToLocation = [self generateRandomLocation];
}
[self performSelector:@selector(repeatingAnimation) withObject:nil afterDelay:0.0f];
}
}
}
];
}
}
];
}
@end
答案 1 :(得分：0)
我只是把我的循环放在我的应用程序的不同部分，现在它的效果要好得多。
最初我这样做了：
- (void)repeatingAnimationForView:(UIView *)view
{
for (VICAirplane *planeObj in self.airplanes) {
}
}
我不需要将for循环放在我的startRepeatingAnimationForView方法中，只是将params传递给相同的方法
相反，我应该把它放在这里（我现在已经做了，并且比我原来做得更好）
-(void)stopRepeatingAnimationForView:(UIView *)view
{
self.enableRepeatingAnimation = NO;
[view.layer removeAllAnimations];
}
- (void)startRepeatingAnimationForView:(UIView *)view
{
self.enableRepeatingAnimation = YES;
for (VICAirplane *planeObj in self.airplanes) {
[self repeatAnimationWithParams:@{@"view":view, @"planeObj": planeObj}];
}
}
-(void) repeatAnimationWithParams:(NSDictionary *)params
{
VICAirplane *planeObj = params[@"planeObj"];
[UIView animateWithDuration:2
delay:1
options:UIViewAnimationOptionCurveLinear
animations:^{
planeObj.imageView.transform = CGAffineTransformRotate(planeObj.imageView.transform, planeObj.angleToRotate);
} completion:^(BOOL finished) {
if (finished==YES) {
[UIView animateWithDuration:5
delay:0.0
options:UIViewAnimationOptionCurveLinear
animations:^{
planeObj.imageView.center = planeObj.rotateToLocation;
} completion:^(BOOL finished) {
if (finished==YES) {
if ( self.enableRepeatingAnimation )
{
CGPoint rotateToLocation = [self generateRandomLocation];
planeObj.rotateToLocation = rotateToLocation;
[self performSelector:@selector(repeatAnimationWithParams:)
withObject:params
afterDelay:0];
}
}
}];
}
}];
}