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  1.php代码 <?php   $iv_size = mcrypt_get_iv_size(MCRYPT_RIJNDAEL_128, MCRYPT_MODE_ECB);   $iv = mcrypt_create_iv($iv_size, MCRYPT_RAND);   $key = 'a16byteslongkey!a16byteslongkey!';   $plaintext = "iphone";      $ciphertext = mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $key, $plaintext, ...
在代码中调用如下代码:(ps: ios 5.0 以后不可用)NSURL*url=[NSURL URLWithString:@"prefs:root=WIFI"];[[UIApplication sharedApplication] openURL:url];即可跳转到设置页面的对应项。[font=]About — prefs:root=General&path=AboutAccessibility — prefs:root=General&path=ACCESSIBILITYAirplane Mode On — prefs:root=AIRPLANE_MO ...
//创建一个基于位图的图形上下文并指定大小为CGSizeMake(200,400)UIGraphicsBeginImageContext(CGSizeMake(200,400)); //renderInContext 呈现接受者及其子范围到指定的上下文[self.view.layer renderInContext:UIGraphicsGetCurrentContext()];    //返回一个基于当前图形上下文的图片 UIImage *aImage = UIGraphicsGetImageFromCurrentImageContext();  //移除栈顶的基于当前位图的图形上下文UIGra ...

图片上传

UIImage *image = [UIImage imageNamed:@"1.jpg"]; //图片名
- (UIImage*)imageWithImageSimple:(UIImage*)image scaledToSize:(CGSize)newSize {
-(BOOL)isValidateEmail:(NSString *)email {  
Undefined symbols for architecture i386: “_OBJC_CLASS_$_XXX”, referenced from: objc-class-ref in XXX ld: symbol(s) not found for architecture i386 clang: error: linker command failed with exit code 1 (use -v to see invocation) 原文出处:http://blog.sina.com.cn/s/blog_5920503a0100zbda.html     ...
iOS允许网站开发者像NativeApp一样在iOS设备的主屏幕为其网站添加一个启动Icon,这个代表着网站的Icon在苹果官方开发者文档里被称为“Web Clip”,它的作用类似于桌面浏览器的书签,用户通过点击Icon能直接快速打开这个url的网站。   为了给某个网页或者整个网站指定一个漂亮的桌面启动图标,iOS Safari提供了两个私有接口: apple-touch-icon 和 apple-touch-icon-precomposed。 / Apple-touch-icon 设置方法 通过在页面HTML的头部添加 <link> 标签<link rel=&q ...
iOS真机调试程序,报如下错误信息:failed to get the task for process XXX 解决方法如下: 证书问题,project和targets的证书都必须是开发证书,ADHOC的证书会出现此问题。
dyld: Library not loaded: /System/Library/Frameworks/Social.framework/Social   Referenced from: /var/mobile/Applications/00D3E0A7-4FF6-451E-B11C-87D7A189F425/sample.app/sample   Reason: image not found 把Build Phases 里Social.framework后边的选项修改成为Optional就可以了  
1、首先在appDelegate中,把view添加到window中有两种方式、   [cpp] view plaincopy
  + (NSString *)replaceUnicode:(NSString *)unicodeStr {          NSString *tempStr1 = [unicodeStr stringByReplacingOccurrencesOfString:@"\u"withString:@"\\U"];  // NSString *tempStr1 = [unicodeStr stringByReplacingOccurrencesOfString:@"%u"withString:@"\\U" ...
It's a bug of simulator 5. After UIAlertView dismissed, press CMD+SHIFT+H, the bug occurs. In fact, it doesn't occur in physical devices. So don't panic   原文:http://stackoverflow.com/questions/12924146/cfxpreferencessearchlistsource-trylock

颜色转换

 
+ (UIColor *) colorWithHexString: (NSString *) stringToConvert {       NSString *cString = [[stringToConvert stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]] uppercaseString];       // String should be 6 or 8 characters     if ([cString length] < 6) retur ...
    NSTimeZone *zone = [NSTimeZone defaultTimeZone];//获得当前应用程序默认的时区     NSInteger interval = [zone secondsFromGMTForDate:[NSDate date]];//以秒为单位返回当前应用程序与世界标准时间(格林威尼时间)的时差     NSDate *localeDate = [[NSDate date] dateByAddingTimeInterval:interval];     NSDate *nowDate=[NSDate dateWithTimeIntervalSin ...
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