【正文】 = [_cacheFileAttributes fileSize]。NSArray *_cachePaths = NSSearchPathForDirectoriesInDomains(NSCachesDirectory,NSUserDomainMask, YES)。forMode ：NSRunLoopCommonModes ][ setTransform:newTransform]。}UIScrollView 控制View縮放allImageScrollView = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, 768, 1024)]。= MPMovieScalingModeAspectFit。1給View添加陰影 和邊框UIImageView *imgvPhoto = [UIImageView alloc] init]。}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 = [[UIImageView alloc] initWithImage:pic]。if (mailClass != nil){if ([mailClass canSendMail]){[self displayComposerSheet]。[Emailalert show]。[isEmailalert show]。[controller release]。[UIView mitAnimations]。1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(qǐng)?jiān)陬^文件中定義。 = 。 = CGRectMake(250, 250, 350, 350)。CGAffineTransform newTransform = CGAffineTransformScale(, , )。 = CGRectMake(64, 0, 102464, 76820)。{CGSize size = CGSizeMake(320, 480)。獲取系統(tǒng)語(yǔ)言設(shè)置NSUserDefaults *userDefault = [NSUserDefaults standardUserDefaults]。 // size of view in popover = size。[ addSubview:]。[ setTransform:newTransform]。[ addSubview:]。}[animation setRemovedOnCompletion:NO]。(void)viewDidLoad{[super viewDidLoad]。}1配置Xcode 看程序崩潰信息在xcode中的左側(cè)目錄中找到Executables 打開(kāi)雙擊和工程名一樣的文件。}pragma mark mailComposeDelegate (void)mailComposeController:(MFMailComposeViewController*)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError*)error{if (result == MFMailComposeResultSent){[self dismissModalViewControllerAnimated:YES]。}。}if (result == MFMailComposeResult