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1、1、获取系统语言设置NSUserDefaults*userDefault=NSUserDefaults standardUserDefaults;NSArray*languages=userDefault objectForKey:AppleLanguages;NSString*preferredLang=languages objectAtIndex:0；2、缓存路径下文件大小-(unsigned long long int)cacheFolderSize NSFileManager*_manager=NSFileManager defaultManager;NSArray*_cachePa
2、ths=NSSearchPathForDirectoriesInDomains(NSCachesDirectory,NSUserDomainMask,YES);NSString*_cacheDirectory=_cachePaths objectAtIndex:;NSArray*_cacheFileList;NSEnumerator*_cacheEnumerator;NSString*_cacheFilePath;unsigned long long int _cacheFolderSize=;_cacheFileList=_manager subpathsAtPath:_cacheDirec
3、tory;_cacheEnumerator=_cacheFileList objectEnumerator;while(_cacheFilePath=_cacheEnumerator nextObject)NSDictionary*_cacheFileAttributes=_managerfileAttributesAtPath:_cacheDirectory stringByAppendingPathComponent:_cacheFilePath traverseLink:YES;_cacheFolderSize+=_cacheFileAttributes fileSize;/单位是字节r
4、eturn _cacheFolderSize;3、Popover push 时 Frame 无法改变解决办法在 popover 中的 ViewController中实现：-(void)viewWillAppear:(BOOL)animated CGSize size=CGSizeMake(320,480);/size of view in popover 名师资料总结-精品资料欢迎下载-名师精心整理-第 1 页，共 9 页 -self.contentSizeForViewInPopover=size;super viewWillAppear:animated;4、tableview滑动导致 N
5、STimer 和委托回调停止解决办法/请求回调NSURLRequest*请求=.scheduleInRunLoop：NSRunLoop currentRunLoop forMode：NSRunLoopCommonModes 连接开始 /定时器回调NSTimer*updateTimer=NSTimer scheduledTimerWithTimeInterval：0.01f 目标：自我选择：选择（updatePencent）的 UserInfo：无重复：是;*NSRunLoop主要=NSRunLoop currentRunLoop 主要 addTimer：updateTimer forMode：
6、NSRunLoopCommonModes;5、手势识别类UIGestureRecognizer 6、SFHFKeychainUtils 存储信息苹果 SDK 自带的就有密码保护，使用方法很简单，如下：1、引入 Security.frameWork框架。2、引入头文件：SFHKeychainUtils.h.3、存密码：SFHFKeychainUtils storeUsername:dd andPassword:aaforServiceName:SERVICE_NAMEupdateExisting:1 error:nil;SFHFKeychainUtils deleteItemForUsernam
7、e:dd andServiceName:SERVICE_NAME error:nil;4、取密码：NSString*passWord=SFHFKeychainUtils getPasswordForUsername:ddandServiceName:SERVICE_NAMEerror:nil;7、missing required architecture i386 in file 解决办法在 TargetInfo里面修改Framework Search Pasths 删除里面内容就可以了。8、view 放大缩小动画效果名师资料总结-精品资料欢迎下载-名师精心整理-第 2 页，共 9 页 -/创
8、建缩小了的视图myWeiBoImageVC=UIViewController alloc init;myWeiBoImageVC.view.clipsToBounds=YES;myWeiBoImageVC.view.alpha=0.0;myWeiBoImageVC.view.frame=CGRectMake(64,0,1024-64,768-20);self.view addSubview:myWeiBoImageVC.view;CGAffineTransform newTransform=CGAffineTransformScale(myWeiBoImageVC.view.transform
9、,0.1,0.1);myWeiBoImageVC.view setTransform:newTransform;myWeiBoImageVC.view.center=CGPointMake(670,100);self performSelector:selector(imageViewControllerBigAnimation);/放大刚刚创建缩小后的视图-(void)imageViewControllerBigAnimation UIView beginAnimations:imageViewBig context:nil;UIView setAnimationDuration:0.5;C
10、GAffineTransform newTransform=CGAffineTransformConcat(myWeiBoImageVC.view.transform,CGAffineTransformInvert(myWeiBoImageVC.view.transform);myWeiBoImageVC.view setTransform:newTransform;myWeiBoImageVC.view.alpha=1.0;myWeiBoImageVC.view.center=CGPointMake(416,510)；UIView commitAnimations;/缩小视图隐藏-(void
11、)imageViewControllerSmallAnimation UIView beginAnimations:imageViewSmall context:nil;UIView setAnimationDuration:0.5;名师资料总结-精品资料欢迎下载-名师精心整理-第 3 页，共 9 页 -CGAffineTransform newTransform=CGAffineTransformScale(myWeiBoImageVC.view.transform,0.1,0.1);myWeiBoImageVC.view setTransform:newTransform;myWeiBoI
12、mageVC.view.center=CGPointMake(670,100);UIView commitAnimations;9、UIScrollView 控制 View 缩放allImageScrollView=UIScrollView alloc initWithFrame:CGRectMake(0,0,768,1024);allImageScrollView.minimumZoomScale=0.3;allImageScrollView.maximumZoomScale=1.0;allImageScrollView.backgroundColor=UIColor clearColor;
13、allImageScrollView.delegate=self;self.view addSubview:allImageScrollView;mPicStatusesViewController=PicStatusesViewController alloc init;allImageScrollView addSubview:mPicStatusesViewController.view;/UIScrollView Delegete 实现-(UIView*)viewForZoomingInScrollView:(UIScrollView*)scrollView return mPicSt
14、atusesViewController.view;/返回 ScrollView 上添加的需要缩放的视图-(void)scrollViewDidZoom:(UIScrollView*)scrollView /缩放操作中被调用-(void)scrollViewDidEndZooming:(UIScrollView*)scrollView withView:(UIView*)view atScale:(float)scale /缩放结束后被调用 名师资料总结-精品资料欢迎下载-名师精心整理-第 4 页，共 9 页 -10、iOS3.2 播放视频NSString*urlString=NSString
15、 stringWithString:视频 url;NSURL*movieUrl=NSURL alloc initWithString:urlString;MPMoviePlayerController*myMoviePlayer=MPMoviePlayerController alloc initWithContentURL:movieUrl;myMoviePlayer.view.frame=CGRectMake(250,250,350,350);self.view addSubview:myMoviePlayer.view;myMoviePlayer.shouldAutoplay=YES;m
16、yMoviePlayer.scalingMode=MPMovieScalingModeAspectFit;myMoviePlayer play;11、谷歌地图翻起动画效果CATransition*animation=CATransition animation;animation setDelegate:self;animation setDuration:0.35;animation setTimingFunction:UIViewAnimationCurveEaseInOut;if(!curled)animation.type=pageCurl;animation.fillMode=kCAFillModeForwards;animation.endProgress=0.40;else animation.type=pageUnCurl;animation.fillMode=kCAFillModeBackwards;animation.startProgress=0.30;animation setRemovedOnCompletion:NO;self.view exchangeSu
