在便携式门户应用程序上，我需要通过调用制作UIView *对象的一些动画（移动/缩放/更改alpha）：
[UIView
animateWithDuration:1.f
delay:0.5f
options:UIViewAnimationOptionAllowUserInteraction
animations:^(void)
{
myview.center = moveTo;
myview.transform = transformTo;
myview.alpha = alphaTo;
}
completion:^(BOOL finished)
{
[self animationFinished];
}];
目前它只是延迟，然后立即执行动画代码和完成代码。
谢谢你的回答。但是我需要"今天"的动画，所以我下一节课。这是工作不好，但总比没有好得多。也许对于一个人来说会有所帮助
AOTAnimate.h
//
// AOTAnimate.h
//
// Created by Andrei Bakulin on 18/11/2013.
//
#import <Foundation/Foundation.h>
@interface AOTAnimate : NSObject
{
UIView *view;
NSInteger animationTicksLeft;
CGFloat scaleX;
CGFloat scaleY;
CGPoint moveDelta;
CGSize scaleCurrent;
CGSize scaleDelta;
CGFloat alphaDelta;
void (^completeAction)();
}
@property (nonatomic, assign) CGFloat duration;
@property (nonatomic, assign) CGFloat delay;
@property (nonatomic, assign) CGFloat frequency;
@property (nonatomic, assign) UIViewAnimationOptions options;
@property (nonatomic, assign) CGPoint moveFrom;
@property (nonatomic, assign) CGAffineTransform transformFrom;
@property (nonatomic, assign) CGFloat alphaFrom;
@property (nonatomic, assign) CGPoint moveTo;
@property (nonatomic, assign) CGAffineTransform transformTo;
@property (nonatomic, assign) CGFloat alphaTo;
+ (AOTAnimate*)makeAnimationOnView:(UIView*)view_ duration:(CGFloat)duration_;
+ (AOTAnimate*)makeAnimationOnView:(UIView*)view_ duration:(CGFloat)duration_ delay:(CGFloat)delay_;
- (void)run;
- (void)runWithCompleteAction:(void (^)(void))complete_;
@end
AOTAnimate.m
//
// AOTAnimate.m
//
// Created by Andrei Bakulin on 18/11/2013.
//
#import "AOTAnimate.h"
@implementation AOTAnimate
@synthesize duration, delay, frequency, options;
@synthesize moveFrom, transformFrom, alphaFrom;
@synthesize moveTo, transformTo, alphaTo;
+ (AOTAnimate*)makeAnimationOnView:(UIView*)view_ duration:(CGFloat)duration_
{
return [self makeAnimationOnView:view_ duration:duration_ delay:0.f];
}
+ (AOTAnimate*)makeAnimationOnView:(UIView*)view_ duration:(CGFloat)duration_ delay:(CGFloat)delay_
{
return [[AOTAnimate alloc] initWithView:view_ duration:(CGFloat)duration_ delay:(CGFloat)delay_];
}
//----------------------------------
- (void)dealloc
{
[view release];
if( completeAction )
Block_release(completeAction);
[super dealloc];
}
- (id)initWithView:(UIView*)view_ duration:(CGFloat)duration_ delay:(CGFloat)delay_
{
self = [super init];
if (self)
{
view = [view_ retain];
duration = duration_;
delay = delay_;
frequency = 0.025f;
options = UIViewAnimationOptionAllowUserInteraction;
moveFrom = view.center;
transformFrom = view.transform;
alphaFrom = view.alpha;
moveTo = view.center;
transformTo = view.transform;
alphaTo = view.alpha;
}
return self;
}
//----------------------------------
#pragma mark - Run animation
- (void)run
{
[self runWithCompleteAction:nil];
}
- (void)runWithCompleteAction:(void (^)(void))complete_
{
view.center = moveFrom;
view.transform = transformFrom;
view.alpha = alphaFrom;
#ifndef ANDROID
[UIView
animateWithDuration:duration
delay:delay
options:options
animations:^(void)
{
view.center = moveTo;
view.transform = transformTo;
view.alpha = alphaTo;
}
completion:^(BOOL finished)
{
if( complete_ )
complete_();
}];
#else
if( duration <= 0.f )
{
[self doAnimationComplete];
return;
}
animationTicksLeft = ceil( duration / frequency );
if( animationTicksLeft == 0 )
{
[self doAnimationComplete];
return;
}
moveDelta = CGPointMake( (moveTo.x-moveFrom.x)/animationTicksLeft, (moveTo.y-moveFrom.y)/animationTicksLeft );
alphaDelta = (alphaTo-alphaFrom)/animationTicksLeft;
CGSize scaleFrom = CGSizeMake( [self scaleX:transformFrom], [self scaleY:transformFrom] );
CGSize scaleTo = CGSizeMake( [self scaleX:transformTo], [self scaleY:transformTo] );
scaleDelta = CGSizeMake((scaleTo.width - scaleFrom.width)/animationTicksLeft,
(scaleTo.height - scaleFrom.height)/animationTicksLeft );
scaleCurrent = scaleFrom;
if( complete_ )
{
completeAction = Block_copy(complete_);
}
[self performSelector:@selector(doAnimationTick) withObject:nil afterDelay:delay];
#endif
}
//----------------------------------
#pragma mark - Manual animation
#ifdef ANDROID
- (void)doAnimationTick
{
if( CGPointEqualToPoint( moveDelta, CGPointZero ) == NO )
{
view.center = CGPointMake( view.center.x + moveDelta.x, view.center.y + moveDelta.y );
}
if( CGSizeEqualToSize( scaleDelta, CGSizeZero) == NO )
{
view.transform = CGAffineTransformMakeScale( scaleCurrent.width, scaleCurrent.height );
scaleCurrent.width += scaleDelta.width;
scaleCurrent.height += scaleDelta.height;
}
if( alphaDelta != 0.f )
{
view.alpha = view.alpha + alphaDelta;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - -
animationTicksLeft--;
if( animationTicksLeft > 0 )
{
[self performSelector:@selector(doAnimationTick) withObject:nil afterDelay:frequency];
}
else
{
[self doAnimationComplete];
}
}
- (void)doAnimationComplete
{
view.center = moveTo;
view.transform = transformTo;
view.alpha = alphaTo;
if( completeAction )
completeAction();
}
//----------------------------------
#pragma mark - Helpers
- (CGFloat)scaleX:(CGAffineTransform)t
{
return sqrt(t.a * t.a + t.c * t.c);
}
- (CGFloat)scaleY:(CGAffineTransform)t
{
return sqrt(t.b * t.b + t.d * t.d);
}
#endif
@end
像这样使用：
UIView *someview;
AOTAnimate *animate = [AOTAnimate makeAnimationOnView:someview duration:1.f delay:0.5f];
// allow to assign - animate.moveFrom / .tranfromFrom / alphaFrom properties,
// but by default they are copy from UIView* object
animate.moveTo = CGPointMake( 100, 200 ); // new point where need to move
animate.transformTo = CGAffineTransformScale( CGAffineTransformIdentity, 1.5f, 1.5f );
animate.alphaTo = 0.5f;
[animate runWithCompleteAction:^{
NSLog(@"Animation done..);
}];
如果此方法将在iOS设备上运行 - 它将使用普通的[UIView animateWithDuration：...]方法
PS：这个类只从一个中心点"移动"到另一个中心点。转换仅用于缩放对象（而不是移动）。我的 2 台测试设备上的 Alpha 不受支持，但也许有些地方支持。
动画不适用于当前版本的 Apporable UIKit。 不过，我们在下一版本的UIKit中提供了功能齐全的动画。 一旦我们对质量和覆盖范围感到满意，我们将发布它。