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-(CGSize)sizeWithString:(NSString *)string font:(UIFont *)font{ CGRect rect = [string boundingRectWithSize:CGSizeMake(320, 8000)//限制最大的宽度和高度 options:NSStri

NSDate *date = [NSDatedate];        NSDateFormatter* formatter = [[NSDateFormatteralloc] init] ;        [formatter setDateFormat:@"yyyy-MM-dd"];        NSString *nowDataStr = [formatte

从服务器端下载验证码图片存储到本地，再用UIImageView显示，刷新的时候从服务器获取新的验证码图片替换本地的图片，显示的时候移除原来的UIImageView加载一个新的，这样就完成可以刷新的验证码，下面附上代码。LoginViewController.m- (void)viewDidLoad {    [superviewDidLoad];

#pragma mark - json解析-(void) json:(NSString *)jsonUrl{    // 错误信息   NSError *error;    // 加载一个NSURL对象   NSURLRequest *request = [NSURLRequestrequestWithURL:[NSURLURLWithStrin

- (void)mapView:(MKMapView *)mapView didSelectAnnotationView:(MKAnnotationView *)view{ // 获得所有MKAnnotationView NSArray *arr = mapView.annotations; // 被点击的MKAnnotationView的标题和副标题

-(NSString*) getFileNameByPath:(NSString*)path{ // 获取带后缀的文件名 path = [path lastPathComponent]; // 去掉文件后缀 path =[path stringByDeletingPathExtension]; return path;}

// #import -(NSString *)md5:(NSString *)str{ const char *cStr = [str UTF8String]; unsigned char result[16]; CC_MD5(cStr, strlen(cStr), result); NSMutableString *hash = [NSMutableStri

原文链接：http://blog.youkuaiyun.com/bihailantian1988/article/details/8433812// 1 普通数组排序 NSMutableArray *arr = [NSMutableArray arrayWithObjects:@"0",@"8",@"6",@"1",nil]; NSArray *sortedArray = [ar

-(NSArray*) getDayTimeByNum:(NSInteger)num timeInterval:(NSInteger)interval{ NSMutableArray *hoursArr = [NSMutableArray array]; NSDate *date; NSString *currentDateStr; for (int i

-(void) selectWayToGetPicture{ UIActionSheet *actionSheet = [[UIActionSheet alloc]initWithTitle:nil delegate:self cancelButtonTitle:@"取消" destructiveButtonTitle:nil otherButtonTitles:@"拍照",@"图库", ni

// 角标-(void) initTagWithTitleAndPoint:(NSString*)title originX:(CGFloat)x originY:(CGFloat)y fatherView:(UIView*)view{ UILabel *tagLabel = [[UILabel alloc] init]; tagLabel.frame = CGRectMake

NSTimer *timer = [NSTimer scheduledTimerWithTimeInterval:10.0 target:self selector:@selector(timerFired:) userInfo:nil repeats:NO];-(void)timer:(NSTimer *)timer{NSLog(@"定时器已经执行！");}

NSData *gifData = [NSDatadataWithContentsOfFile:_path];    _gifWebView = [[UIWebViewalloc] initWithFrame:[UIScreenmainScreen].bounds];    [_gifWebViewsetBackgroundColor:[UIColorclear

仿余额宝数字渐慢跳动效果：

[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"calshow:"]];如果要选择特定的某一天的话（默认是当前日期），calshow:后面加时间戳格式，也就是NSTimeInterval注意这里计算时间戳调用的方法是-NSTimeInterval nowTimestamp = [[NSDate date]

在pushViewController之后加入如下代码：[self.navigationController pushViewController:viewController animated:YES];// 开启iOS7的滑动返回效果if ([self.navigationController respondsToSelector:@selector(interacti

NSIndexPath *indexPath = [NSIndexPath indexPathForRow:0 inSection:0];

self.automaticallyAdjustsScrollViewInsets = YES;

textField.placeholder =@"呵呵哒";[accountNum setValue:[UIColorgrayColor] forKeyPath:@"_placeholderLabel.textColor"];[accountNumsetValue:[UIFontboldSystemFontOfSize:14]forKeyPath:@"_placeh

//随机生成1-4的随机数int x = (arc4random() %4)+1;   NSLog(@"%d",x);

UILabel * contentLabel = [[UILabelalloc] init];    NSString * contentStr =@"      曾经七次登上《时代杂志》封面人物的乔布斯，其实是个备受争议的人物。在这位曾被《财富》杂志评为年度最强商人的CEO的经营下，苹果的每一代新产品的简约设计吸引了亿万名粉丝，虽然是名科学家却对其公司所推出的产品有着一定程度的美

TableView继承自ScrollerView，ScrollerView在iOS7以后会自动留白，加入self.automaticallyAdjusraScrollViewInsets=flase去掉留白。

//修改状态栏的颜色-(UIStatusBarStyle)preferredStatusBarStyle {    returnUIStatusBarStyleLightContent;}

-(NSArray*) getFilesByPath:(NSString*)path{ // 根据路径获取该路径下所有文件 NSFileManager *fileManager = [NSFileManager defaultManager]; NSArray *files = [fileManager subpathsOfDirectoryAtPath: path error:nil];

在info.plist里面添加Localized resources can be mixed设置为YES（表示是否允许应用程序获取框架库内语言）

转载自：http://www.cocoachina.com/ios/20141212/10622.html

KSBarrageView：https://github.com/Jonear/KSBarrageViewCrazyPeter：https://github.com/CrazyPeter/DanmukuMaster-iOSBarrageRenderer：https://github.com/unash/BarrageRendererHJDanmakuDemo

-(NSUInteger)supportedInterfaceOrientations{//强制横屏    returnUIInterfaceOrientationMaskLandscape;}

GuideViewController.h#import @interface GuideViewController :UIViewControllerUIScrollViewDelegate>@property (nonatomic)UIScrollView *scrollView;@property (nonatomic)NSA

UIButton *button = [UIButtonbuttonWithType:UIButtonTypeSystem];button.frame =CGRectMake(40,100, 40, 40);[buttonsetBackgroundImage:image forState:UIControlStateNormal];button.layer.mask

//TabBar    UITabBarController *tabBarCtrl = [[UITabBarControlleralloc]init];    tabBarCtrl.tabBar.backgroundColor = [UIColorwhiteColor];    tabBarCtrl.tabBar.tintColor = [UIColorwhiteCo

UIPasteboard *pasteboard = [UIPasteboardgeneralPasteboard];pasteboard.string =@"呵呵哒";

if (![[NSUserDefaultsstandardUserDefaults] boolForKey:@"everLaunched"]) {        [[NSUserDefaultsstandardUserDefaults] setBool:YESforKey:@"everLaunched"];        [[NSUserDefaultsstanda

[LabelsetBackgroundColor:[UIColorcolorWithPatternImage:[UIImageimageNamed:@"XXX.png"]]];

UIApplication *application = [UIApplicationsharedApplication];[applicationsetStatusBarHidden:NO];//设置为YES，则显示

转载自：http://www.2cto.com/kf/201308/238449.htmlUITableView继承自UIScrollview,是苹果为我们封装好的一个基于scroll的控件。上面主要是一个个的UITableViewCell,可以让UITableViewCell响应一些点击事件，也可以在UITableViewCell中加入UITextField或者UITextView等子视

NSArray *paths=NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask,YES);   NSString *path=[paths    objectAtIndex:0];   NSLog(@"path = %@",path);    NSString *filena

pageControl.currentPageIndicatorTintColor = [UIColorwhiteColor];pageControl.pageIndicatorTintColor = [UIColorgrayColor];

-(void)textFieldDidBeginEditing:(UITextField *)textField{ CGRect frame = textField.frame; int offset = frame.origin.y + 100 - (UISCREEN_HEIGHT - 480.0);//键盘高度 NSTimeInterval animationDuration =

-(UIImage*)UIViewToUIImageView:(UIView*)view{ CGSize size = view.bounds.size; // 下面的方法：第一个参数表示区域大小；第二个参数表示是否是非透明的如果需要显示半透明效果，需要传NO，否则传YES；第三个参数是屏幕密度 UIGraphicsBeginImageContextWithOptions(size,