1、獲取系統(tǒng)語言設(shè)置NSUserDefaults*userDefault=[NSUserDefaultsstandardUserDefaults];NSArray*languages=[userDefaultobjectForKey:@"AppleLanguages"];NSString*preferredLang=[languagesobjectAtIndex:0]；2、緩存路徑下文件大小-(unsignedlonglongint)cacheFolderSize{NSFileManager*_manager=[NSFileManagerdefaultManager];NSArray*_cachePaths=NSSearchPathForDirectoriesInDomains(NSCachesDirectory,

NSUserDomainMask,YES);NSString*_cacheDirectory=[_cachePathsobjectAtIndex:];NSArray*_cacheFileList;NSEnumerator*_cacheEnumerator;NSString*_cacheFilePath;unsignedlonglongint_cacheFolderSize=;_cacheFileList=[_managersubpathsAtPath:_cacheDirectory];_cacheEnumerator=[_cacheFileListobjectEnumerator];while(_cacheFilePath=[_cacheEnumeratornextObject]){NSDictionary*_cacheFileAttributes=[_managerfileAttributesAtPath:[_cacheDirectorystringByAppendingPathComponent:_cacheFilePath]traverseLink:YES];_cacheFolderSize+=[_cacheFileAttributesfileSize];}//單位是字節(jié)return_cacheFolderSize;}3、Popoverpush時(shí)Frame無法改變解決辦法在popover中的ViewController中實(shí)現(xiàn)：-(void)viewWillAppear:(BOOL)animated

{CGSizesize=CGSizeMake(320,480);//sizeofviewinpopoverself.contentSizeForViewInPopover=size;[superviewWillAppear:animated];}4、tableview滑動(dòng)導(dǎo)致NSTimer和委托回調(diào)停止解決辦法//請求回調(diào)NSURLRequest*請求=...scheduleInRunLoop：[NSRunLoopcurrentRunLoop]

forMode：NSRunLoopCommonModes]

[連接開始]//定時(shí)器回調(diào)NSTimer*updateTimer=[NSTimerscheduledTimerWithTimeInterval：0.01f目標(biāo)：自我選擇：選擇（updatePencent）的UserInfo：無重復(fù)：是];*NSRunLoop主要=[NSRunLoopcurrentRunLoop]

[主要addTimer：updateTimerforMode：NSRunLoopCommonModes];5、手勢識別類UIGestureRecognizer6、SFHFKeychainUtils存儲信息蘋果SDK自帶的就有密碼保護(hù)，使用方法很簡單，如下：1、引入Security.frameWork框架。2、引入頭文件：SFHKeychainUtils.h.3、存密碼：[SFHFKeychainUtilsstoreUsername:@"dd"andPassword:@"aa"forServiceName:SERVICE_NAMEupdateExisting:1error:nil];[SFHFKeychainUtilsdeleteItemForUsername:@"dd"andServiceName:SERVICE_NAMEerror:nil];4、取密碼：NSString*passWord=[SFHFKeychainUtilsgetPasswordForUsername:@"dd"andServiceName:SERVICE_NAMEerror:nil];7、missingrequiredarchitecturei386infile解決辦法在TargetInfo里面修改FrameworkSearchPasths刪除里面內(nèi)容就可以了。8、view放大縮小動(dòng)畫效果//創(chuàng)建縮小了的視圖

myWeiBoImageVC=[[UIViewControlleralloc]init];

myWeiBoImageVC.view.clipsToBounds=YES;

myWeiBoImageVC.view.alpha=0.0;

myWeiBoImageVC.view.frame=CGRectMake(64,0,1024-64,768-20);

[self.viewaddSubview:myWeiBoImageVC.view];

CGAffineTransformnewTransform=

CGAffineTransformScale(myWeiBoImageVC.view.transform,0.1,0.1);

[myWeiBoImageVC.viewsetTransform:newTransform];

myWeiBoImageVC.view.center=CGPointMake(670,100);

[selfperformSelector:@selector(imageViewControllerBigAnimation)];

//放大剛剛創(chuàng)建縮小后的視圖

-(void)imageViewControllerBigAnimation{

[UIViewbeginAnimations:@"imageViewBig"context:nil];

[UIViewsetAnimationDuration:0.5];

CGAffineTransformnewTransform=CGAffineTransformConcat(myWeiBoImageVC.view.transform,CGAffineTransformInvert(myWeiBoImageVC.view.transform));

[myWeiBoImageVC.viewsetTransform:newTransform];

myWeiBoImageVC.view.alpha=1.0;

myWeiBoImageVC.view.center=CGPointMake(416,510)；

[UIViewcommitAnimations];

}

//縮小視圖隱藏

-(void)imageViewControllerSmallAnimation{

[UIViewbeginAnimations:@"imageViewSmall"context:nil];

[UIViewsetAnimationDuration:0.5];

CGAffineTransformnewTransform=CGAffineTransformScale(myWeiBoImageVC.view.transform,0.1,0.1);

[myWeiBoImageVC.viewsetTransform:newTransform];

myWeiBoImageVC.view.center=CGPointMake(670,100);

[UIViewcommitAnimations];

}9、UIScrollView控制View縮放allImageScrollView=[[UIScrollViewalloc]initWithFrame:CGRectMake(0,0,768,1024)];

allImageScrollView.minimumZoomScale=0.3;

allImageScrollView.maximumZoomScale=1.0;

allImageScrollView.backgroundColor=[UIColorclearColor];

allImageScrollView.delegate=self;

[self.viewaddSubview:allImageScrollView];

mPicStatusesViewController=[[PicStatusesViewControlleralloc]init];

[allImageScrollViewaddSubview:mPicStatusesViewController.view];

//UIScrollViewDelegete實(shí)現(xiàn)

-(UIView*)viewForZoomingInScrollView:(UIScrollView*)scrollView{

returnmPicStatusesViewController.view;//返回ScrollView上添加的需要縮放的視圖

}

-(void)scrollViewDidZoom:(UIScrollView*)scrollView{

//縮放操作中被調(diào)用

}

-(void)scrollViewDidEndZooming:(UIScrollView*)scrollViewwithView:(UIView*)viewatScale:(float)scale{

//縮放結(jié)束后被調(diào)用

}10、iOS3.2播放視頻NSString*urlString=[NSStringstringWithString:@"視頻url"];NSURL*movieUrl=[[NSURLalloc]initWithString:urlString];

MPMoviePlayerController*myMoviePlayer=[[MPMoviePlayerControlleralloc]initWithContentURL:movieUrl];

myMoviePlayer.view.frame=CGRectMake(250,250,350,350);

[self.viewaddSubview:myMoviePlayer.view];

myMoviePlayer.shouldAutoplay=YES;

myMoviePlayer.scalingMode=MPMovieScalingModeAspectFit;

[myMoviePlayerplay];11、谷歌地圖翻起動(dòng)畫效果CATransition*animation=[CATransitionanimation];

[animationsetDelegate:self];

[animationsetDuration:0.35];

[animationsetTimingFunction:UIViewAnimationCurveEaseInOut];

if(!curled){animation.type=@"pageCurl";

animation.fillMode=kCAFillModeForwards;

animation.endProgress=0.40;

}else{

animation.type=@"pageUnCurl";

animation.fillMode=kCAFillModeBackwards;

animation.startProgress=0.30;

}

[animationsetRemovedOnCompletion:NO];

[self.viewexchangeSubviewAtIndex:0withSubviewAtIndex:1];

[self.view.layeraddAnimation:animationforKey:@"pageCurlAnimation"];12、給View添加陰影和邊框UIImageView*imgvPhoto=[UIImageViewalloc]init];

//添加邊框

CALayer*layer=[_imgvPhotolayer];

layer.borderColor=[[UIColorwhiteColor]CGColor];

layer.borderWidth=5.0f;

//添加四個(gè)邊陰影

_imgvPhoto.layer.shadowColor=[UIColorblackColor].CGColor;

_imgvPhoto.layer.shadowOffset=CGSizeMake(0,0);

_imgvPhoto.layer.shadowOpacity=0.5;

_imgvPhoto.layer.shadowRadius=10.0;

//添加兩個(gè)邊陰影

_imgvPhoto.layer.shadowColor=[UIColorblackColor].CGColor;

_imgvPhoto.layer.shadowOffset=CGSizeMake(4,4);

_imgvPhoto.layer.shadowOpacity=0.5;

_imgvPhoto.layer.shadowRadius=2.0;13、使用NSTimer與UIView動(dòng)畫實(shí)現(xiàn)飄雪效果viewDidLoad事件中，增加一個(gè)圖片及定時(shí)器并啟動(dòng),這里的pic請?jiān)陬^文件中定義。-(void)viewDidLoad{

[superviewDidLoad];

self.pic=[UIImageimageNamed:@"snow.png"];//初始化圖片

//啟動(dòng)定時(shí)器，實(shí)現(xiàn)飄雪效果

[NSTimerscheduledTimerWithTimeInterval:(0.2)target:selfselector:@selector(ontime)userInfo:nilrepeats:YES];

}然后再實(shí)現(xiàn)定時(shí)器定時(shí)調(diào)用的ontime方法：

-(void)ontime{

UIImageView*view=[[UIImageViewalloc]initWithImage:pic];//聲明一個(gè)UIImageView對象，用來添加圖片

view.alpha=0.5;//設(shè)置該view的alpha為0.5，半透明的

intx=round(random()20);//隨機(jī)得到該圖片的x坐標(biāo)

inty=round(random()20);//這個(gè)是該圖片移動(dòng)的最后坐標(biāo)x軸的

ints=round(random())+10;//這個(gè)是定義雪花圖片的大小

intsp=1/round(random()0)+1;//這個(gè)是速度

view.frame=CGRectMake(x,-50,s,s);//雪花開始的大小和位置

[self.viewaddSubview:view];//添加該view

[UIViewbeginAnimations:nilcontext:view];//開始動(dòng)畫

[UIViewsetAnimationDuration:10*sp];//設(shè)定速度

view.frame=CGRectMake(y,500,s,s);//設(shè)定該雪花最后的消失坐標(biāo)

[UIViewsetAnimationDelegate:self];

[UIViewcommitAnimations];

}14、配置Xcode看程序崩潰信息1、在xcode中的左側(cè)目錄中找到Executables打開2、雙擊和工程名一樣的文件。3、在打開的文件中的Arguments選項(xiàng)，在下面的框中加入Name：NSZombieEnabled設(shè)置value為YES。15、程序中發(fā)送郵件和檢測設(shè)備郵箱是否被配置-(void)addEmail{ClassmailClass=(NSClassFromString(@"MFMailComposeViewController"));if(mailClass!=nil){if([mailClasscanSendMail]){[selfdisplayComposerSheet];}else{[selflaunchMailAppOnDevice];}}else{[selflaunchMailAppOnDevice];}}-(void)displayComposerSheet{MFMailComposeViewController*controller=[[MFMailComposeViewControlleralloc]init];controller.navigationBar.tag=1002;[self.navigationController.navigationBarsetNeedsDisplay];controller.mailComposeDelegate=self;[controllersetSubject:@"意見反饋"];[controllersetToRecipients:[[NSArrayalloc]initWithObjects:@"555@",nil]];NSString*emailBody=nil;[controllersetMessageBody:emailBodyisHTML:YES];[selfpresentModalViewController:controlleranimated:YES];[controllerrelease];}#pragmamarkmailComposeDelegate(void)mailComposeController:(MFMailComposeViewController*)controllerdidFinishWithResult:(MFMailComposeResult)resulterror:(NSError*)error{if(result==MFMailComposeResultSent){[selfdismissModalViewControllerAnimated:YES];}if(result==MFMailComposeResultSaved){[selfdismissModalViewControllerAnimated:YES];}if(result==MFMailComposeResultFailed){Emailalert=[[UIAlertViewalloc]initWithTitle:@""message:@"發(fā)送失敗"delegate:se