iOS项目 我常用的代码

1.增加一个旋转动画

UIImage *loadImage = [UIImageimageNamed:@"detailLoad.png"];

UIImageView *loadImageView = [[[UIImageViewalloc]initWithImage:loadImage ]autorelease];
loadImageView.backgroundColor = [UIColorclearColor];
loadImageView.center =self.view.center;
loadImageView.tag =kLoadImageView;
//imageview旋转动画
CAKeyframeAnimation *theAnimation = [CAKeyframeAnimationanimation];
theAnimation.values = [NSArrayarrayWithObjects:
[NSValuevalueWithCATransform3D:CATransform3DMakeRotation(0,0,0,1)],
[NSValuevalueWithCATransform3D:CATransform3DMakeRotation(3.13,0,0,1)],
[NSValuevalueWithCATransform3D:CATransform3DMakeRotation(6.26,0,0,1)],
nil];
theAnimation.cumulative =YES;
theAnimation.removedOnCompletion =YES;
theAnimation.repeatCount =HUGE_VALF;
[theAnimation
setSpeed:.15];
[loadImageView.layeraddAnimation:theAnimationforKey:@"transform"];

[self.viewaddSubview:loadImageView];

2.图片自动放大缩小

UIImage *infoImage = [UIImageimageNamed:@"detail_info_btn.png"];

UIButton *infoButton = [[UIButton
alloc] initWithFrame:CGRectMake(0,0, infoImage.size.width,
infoImage.size.height)];
[infoButton
setTag:kInfoButtonTag];
[infoButtonsetImage:infoImageforState:UIControlStateNormal];
[infoButtonaddTarget:selfaction:@selector(infoButtonClicked)forControlEvents:UIControlEventTouchUpInside];
[selfaddSubview:infoButton];
[infoButton
release];

//变大缩小动画
CAKeyframeAnimation* bob = [CAKeyframeAnimationanimationWithKeyPath:@"transform"];

CATransform3D r[3] = {CATransform3DMakeScale(1.0,1.0,1),
CATransform3DMakeScale(1.2,1.2,1)};
bob.values = [NSArrayarrayWithObjects:[NSValuevalueWithCATransform3D:r[0]],
[NSValuevalueWithCATransform3D:r[1]],[NSValuevalueWithCATransform3D:r[0]],nil];
bob.repeatCount =HUGE_VAL;
bob.duration =1.75;
bob.timingFunction = [CAMediaTimingFunctionfunctionWithName:kCAMediaTimingFunctionLinear];
[infoButton.layer addAnimation:bobforKey:nil];
3.截取当前屏幕作为 一张图

//开始截图
UIGraphicsBeginImageContext(self.view.bounds.size);
[self.view.layerrenderInContext:UIGraphicsGetCurrentContext()];
UIImage *img =UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
4.让view 以任意方式 push出来

- (void)contentViewAniamted:(NSString *)subtype :(UIView *)currentView{
CATransition *animation = [CATransitionanimation];
animation.duration =.3;
animation.timingFunction =UIViewAnimationCurveEaseInOut;

animation.fillMode = kCAFillModeForwards; //必须设定 不然不生效
animation.type = kCATransitionPush;
animation.subtype = subtype;
[currentView.layer addAnimation:animationforKey:@"animation"];
[self.viewaddSubview:currentView];
}

- (void)show
{

LeftView *currentLeft = [[[LeftViewalloc]initWithFrame:CGRectMake(0,0,600,566)
]autorelease];
currentLeft.center =self.view.center;
[selfcontentViewAniamted:kCATransitionFromTop :currentLeft];
// [self makeZSViewControllerInVisible:currentLeft];
[self.view addSubview:currentLeft];

}

5.图片以中心点 放大

//执行动画
[UIView beginAnimations:@""context:@""];
[UIView setAnimationDuration:1.0f];
[UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];

self.bigImageView.frame =CGRectMake(self.bigImageView.frame.origin.x
- bigImage.size.width/2 ,self.bigImageView.frame.origin.y
- bigImage.size.height/2, bigImage.size.width, bigImage.size.height);
[UIViewcommitAnimations];

6.让两个viewController以动画形式翻出

CATransition *transition = [CATransitionanimation];
transition.duration =1;
transition.timingFunction = [CAMediaTimingFunctionfunctionWithName:kCAMediaTimingFunctionEaseInEaseOut];
transition.type =kCATransitionPush;

transition.subtype =kCATransitionFromLeft;
transition.delegate =self;
[self.navigationController.view.layeraddAnimation:transitionforKey:nil];

[self.navigationControllerpopViewControllerAnimated:NO];

7.当键盘出现时 控制view的移动

//通过键盘出现或者消失 来控制view上移

//通过键盘出现或者消失 来控制view上移
NSNotificationCenter *center = [NSNotificationCenterdefaultCenter];
[center
addObserver:self
selector:@selector(keyboardWillShow:)
name:UIKeyboardWillShowNotification
object:nil];
[center
addObserver:self
selector:@selector(keyboardWillHide:)
name:UIKeyboardWillHideNotification
object:nil];

-(void)keyboardWillShow:(NSNotification *)note
{

if (self.contentView.frame.origin.y <0)return;

[UIViewanimateWithDuration:.4
animations:^(void) {
self.contentView.center =CGPointMake(self.contentView.center.x,self.contentView.center.y
-300);
}];

}

-(void)keyboardWillHide:(NSNotification *)note
{

if (self.contentView.frame.origin.y ==0)return;

[UIViewanimateWithDuration:.4
animations:^(void) {
self.contentView.center =CGPointMake(self.contentView.center.x,self.contentView.center.y
+300);
}];

}

8.把字符串 存储到一个文件里

NSArray *paths =
NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,
NSUserDomainMask,
YES);

NSString *basePath = ([paths count] >
0) ? [paths objectAtIndex:0] :
nil;
NSString *contentJsonPath = [basePath
stringByAppendingPathComponent:@"content_.json"];

NSString *thumsPath = [basePath stringByAppendingPathComponent:@"thumbs.png"];

NSString *imgPath = [basePath
stringByAppendingPathComponent:@"img.png"];

//将json文件保存起来

NSAutoreleasePool *pool = [[NSAutoreleasePool
alloc]
init];
[contentJson
writeToFile:contentJsonPath atomically:YES
encoding:NSUTF8StringEncoding
error:NULL];
[thumbs
writeToFile:thumsPath atomically:YES];
[img
writeToFile:imgPath atomically:YES];
[pool
drain];