都是笔记,

线程:{ NSInteger _count; //锁 NSLock *_lock;} _lock=[[NSLock alloc] init];  //在didload里边初始化_lock第一种: NSThread *thred1=[[NSThread alloc]initWithTarget:self selector:@selec

- (void)viewDidLoad{ [super viewDidLoad]; // Do any additional setup after loading the view, typically from a nib. self.p=[[Person alloc] init]; self.p.name=@"Kim"; self.p.age=@"18";

1 :初始化 视图布局

//GCD (先进先出 FIFO)    //串行:前一个任务完成,后一个任务才能执行    //并行:任务在派发时是有序的,但是不用等第一个任务执行完成才开始.    //GCD队列分为三种:主队列,全局队列,和自定义队列    1:使用主队列实现任务派发(串行),在主线程中//1.使用主队列实现任务派发(串行),在主线程中 dispatch_queue

#import "CWViewController.h"@interface CWViewController ()@end@implementation CWViewController- (void)viewDidLoad{ [super viewDidLoad]; //设置代理对象 self.textView.delegate=self; /

在NextViewController.h里边声明

UIViewController *v1=[[UIViewController alloc] init]; v1.view.backgroundColor=[UIColor redColor]; UITabBarItem *v1BI=[[UITabBarItem alloc] initWithTabBarSystemItem: UITabBarSystemItemFavorites

//一键换肤 [[UINavigationBar appearance]setBarTintColor:[UIColor blueColor]]; [[UITabBar appearance] setBarTintColor:[UIColor purpleColor]];

Uiimage+ImageDownLoad

//访问沙盒路径 //1.Home主目录,里面有 :Documents.Library.temp 和一个应用程序 // NSLog(@"Home:%@",NSHomeDirectory()); //2,Documents NSString *DocumentsPath=NSSearchPathForDirectoriesInDoma

创建修改文件夹删除文件夹//NSFileManager //创建文件夹 //1.在Documents创建一个文件夹 NSString *documentPath=NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)[0]; // NSLog(@"do

声明两个@property (strong, nonatomic) IBOutlet UITextField *userName;@property (strong, nonatomic) IBOutlet UITextField *passWord;

- (void)viewDidLoad{[super viewDidLoad];// 操作系统NSString * osName =[[UIDevice currentDevice]systemName];// 操作系统版本NSString * systemVersion =[[UIDevice currentDevice]systemVersion];

UILabel *label3 = [[UILabel alloc] initWithFrame:CGRectMake(10,300, 300, 100)]; label3.text =@"噜啦啦噜啦啦噜啦"; [self.view addSubview:label3]; CGRect frame = label3.frame;

[self.window insertSubview:view5 aboveSubview:view1]; //yi [view5 removeFromSuperview]; [self.window exchangeSubviewAtIndex:1 withSubviewAtIndex:2];

先声明 #import "CWViewController.h"//get请求的url#define BASE_URL @"http://project.lanou3g.com/teacher/yihuiyun/phpJSON.php"//post请求的url#define BASE_URL_2 @"http://ipad-bjwb.bjd.com.cn/DigitalPublic

1 xml sax解析 系统自带

先建立一个Student类声明:@property(nonatomic,copy)NSString *name;@property(nonatomic,copy)NSString *sex;@property(nonatomic,copy)NSString *age;

//UIView动画 //开始动画 [UIView beginAnimations:nil context:nil]; //运动的时间 [UIView setAnimationDuration:2.0f]; //延时启动 //[UIView setAnimationDelay:2.f]; //速度曲线 [UIVie

UIView的属性动画,会修改属性产生动画.CALayer,没有修改UIView属性.初始化myView@property (nonatomic,strong)UIView *myView;self.myView=[[UIView alloc] initWithFrame:CGRectMake(50, 50, 100, 100)]; self.myVi

RootView

Slider  初始化

初始化 NSArray *array=@[@"红",@"黄",@"蓝"]; //数组中有多少个元素,分段控制就有多少条目(分段) self.seg=[[UISegmentedControl alloc] initWithItems:array]; self.seg.frame=CGRectMake(50, 100, 200, 50); //选中哪一个分段

定义声明@interface RootView : UIView@property(nonatomic,retain)UIScrollView *scroll;@property(nonatomic,retain)UIPageControl *page;@end

@interface TestView(){ //开始触摸这个点 CGPoint _startPoint; }@end//当你开始触摸的时候,到这看看.//一次出没时间发生时,该方法只执行一次.-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{ //取出手指触碰

1:Gdata文件拖入2:.h文件中找注释  /user/include/libxml2BuildSettings  搜索 search path找到  Header Search Paths双击右边加号 ,,   填进去/usr/include/libxml23:搜索 Other linkOther linker flags 右边加上 -lxml24:Build Ph

1:新建协议@protocol PassValueDelegate -(void)passValueWithLableString:(NSString *)labelString textString:(NSString *)textString;@end

//在AppDelegate 里边的.- (void)applicationWillResignActive:(UIApplication *)application{ NSLog(@"将要进入不活跃状态");}- (void)applicationDidEnterBackground:(UIApplication *)application{

延展声明{ UITableViewCellEditingStyle _style;}

初始化UIImage *imag=[UIImage imageNamed:@"13.png"]; //滚动视图 self.scroll=[[UIScrollView alloc] init]; self.scroll.frame=[UIScreen mainScreen].bounds; //内容尺寸 self.scroll.conten

方法:+(CGFloat)cellHeight:(NSString *)text{ //死值和文字的高度 return 20+60+10+20+[[self class]textHeight:text];}//计算文字的高度+(CGFloat)textHeight:(NSString *)aString{ NSDictionary *dic=@{NSFont

//声明加载view的动画路径 UIBezierPath *pacmanOpenPath; CGFloat radius = 15.0f; CGPoint arcCenter = CGPointMake(radius, radius); //定制一段圆弧 pacmanOpenPath = [UIBezierPath bezierPathW