<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[a44994966的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/a44994966</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; a44994966]]></copyright><item><title><![CDATA[文件大小的计算和文件夹大小的计算]]></title><link>https://blog.youkuaiyun.com/a44994966/article/details/101337677</link><guid>https://blog.youkuaiyun.com/a44994966/article/details/101337677</guid><author>a44994966</author><pubDate>Fri, 16 Oct 2015 11:30:00 +0800</pubDate><description><![CDATA[1读取本地documents文件里文件夹的大小(我们可以利用NSDirectoryEnumerator这个类)
　　　　　　NSString * Docupath = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)[0];
        //  一般不...]]></description><category></category></item><item><title><![CDATA[NSlog输出]]></title><link>https://blog.youkuaiyun.com/a44994966/article/details/101337691</link><guid>https://blog.youkuaiyun.com/a44994966/article/details/101337691</guid><author>a44994966</author><pubDate>Mon, 12 Oct 2015 10:41:00 +0800</pubDate><description><![CDATA[NSLog的定义
　　void NSLog(NSString *format, …);

　　基本上，NSLog很像printf，同样会在console中输出显示结果。不同的是，传递进去的格式化字符是NSString的对象，而不是char *这种字符串指针。

实例

　　NSLog可以如下面的方法使用：


　　NSLog (@"this is a test"...]]></description><category></category></item><item><title><![CDATA[时间格式的转化]]></title><link>https://blog.youkuaiyun.com/a44994966/article/details/101337689</link><guid>https://blog.youkuaiyun.com/a44994966/article/details/101337689</guid><author>a44994966</author><pubDate>Mon, 28 Sep 2015 22:30:00 +0800</pubDate><description><![CDATA[当输出时间的格式为
Mon Sep 28 22:25:56 +0800 2015  如果要显示%@秒/分/时以前时需要对其进行进行格式编写
NSDateFormatter * formart=[[NSDateFormatter alloc]init];
//此句话是为了模拟器上输出正常,而在真机上的时候输出为空
  NSLocale * local=[[NSLocale ...]]></description><category></category></item><item><title><![CDATA[修改利用SVPullToRefresh 下拉刷新时tableView 被导航条覆盖一行的]]></title><link>https://blog.youkuaiyun.com/a44994966/article/details/101337687</link><guid>https://blog.youkuaiyun.com/a44994966/article/details/101337687</guid><author>a44994966</author><pubDate>Mon, 28 Sep 2015 22:12:00 +0800</pubDate><description><![CDATA[//修复刷新坐标起点问题
if ([self respondsToSelector:@selector(automaticallyAdjustsScrollViewInsets)])
  {
    self.automaticallyAdjustsScrollViewInsets=NO;
    UIEdgeInsets insets= _TableView...]]></description><category></category></item><item><title><![CDATA[线程锁]]></title><link>https://blog.youkuaiyun.com/a44994966/article/details/101337686</link><guid>https://blog.youkuaiyun.com/a44994966/article/details/101337686</guid><author>a44994966</author><pubDate>Mon, 28 Sep 2015 21:18:00 +0800</pubDate><description><![CDATA[1.当多个线程 同时抢夺一个公共资源时,为了防止这个公共资源被同时修改,需要对资源加锁 
2.当一个线程对资源加锁之后,只有当前线程可以修改资源内容,其他线程不可以修改.只有在当前线程修改完毕,把锁打开,其他线程才能使用公共资源
实现上述方法的又两种
(1).锁NSLock * _Lock;
(2).同步块@synchronized(self){};

例子如下:
...]]></description><category></category></item><item><title><![CDATA[接上  主线程和分线程的另一种方法GCD]]></title><link>https://blog.youkuaiyun.com/a44994966/article/details/101337683</link><guid>https://blog.youkuaiyun.com/a44994966/article/details/101337683</guid><author>a44994966</author><pubDate>Mon, 28 Sep 2015 20:34:00 +0800</pubDate><description><![CDATA[//
// ViewController.m
// GCD
//
// Created by mac on 15-9-28.
// Copyright (c) 2015年 zy. All rights reserved.
//

#import "ViewController.h"

@interface ViewController ()

@en...]]></description><category></category></item><item><title><![CDATA[主线程和分线程]]></title><link>https://blog.youkuaiyun.com/a44994966/article/details/101337680</link><guid>https://blog.youkuaiyun.com/a44994966/article/details/101337680</guid><author>a44994966</author><pubDate>Mon, 28 Sep 2015 20:27:00 +0800</pubDate><description><![CDATA[//
// ViewController.m
// MultiThread
//
// Created by mac on 15-9-28.
// Copyright (c) 2015年 zy. All rights reserved.
//

#import "ViewController.h"
#import "MyOpearation.h"
#impo...]]></description><category></category></item><item><title><![CDATA[单例类的创建]]></title><link>https://blog.youkuaiyun.com/a44994966/article/details/101337676</link><guid>https://blog.youkuaiyun.com/a44994966/article/details/101337676</guid><author>a44994966</author><pubDate>Mon, 28 Sep 2015 19:29:00 +0800</pubDate><description><![CDATA[#import "SingalTon.h"

@implementation SingalTon
//实例变量不能在静态方法中使用
//需要定义成全局变量或者静态变量
static SingalTon * _singleTon=nil;
+(SingalTon *) ShareSingleTon
{
//  返回对象前需要判断,这个对象之前是否创建过,如果没有创建...]]></description><category></category></item></channel></rss>