博客园_Our practice

转 iphone开发资料汇总（很多实用的东东）

2011-10-19T07:19:00Z

如何用Facebook graphic api上传视频：	http://developers.facebook.com/blog/post/532/
Keychain保存数据封装：	https://github.com/carlbrown/PDKeychainBindingsController
对焦功能的实现：	http://www.clingmarks.com/?p=612
自定义圆角Switch按件：	https://github.com/domesticcatsoftware/DCRoundSwitch
弹出窗口For iphone and ipad:	https://github.com/chrismiles/CMPopTipView
KVO详解：	http://nachbaur.com/blog/back-to-basics-using-kvo
图片浏览:	https://github.com/bdewey/Pholio
Dropbox实例：	https://github.com/bdewey/dropvault
当地天气预报实例：	https://github.com/aspitz/WxHere
可伸缩的toolBar实例：	https://github.com/aspitz/ToolDrawer
app资源保护相关：	http://aptogo.co.uk/2010/07/protecting-resources/
cocos2d中也可用UIScrollView,UITableView,UIGestureRecognizers	https://github.com/jerrodputman/CCKit http://www.tinytimgames.com/2011/08/05/introducing-cckit/
UITableView两级树型结构：	http://www.codeproject.com/KB/iPhone/collapsabletableview.aspx
iOS文档导入导出：	http://mobiforge.com/developing/story/importing-exporting-documents-ios
CoreAnimation Demo:	https://github.com/bobmccune/Core-Animation-Demos
CoreAnimation Dev:	Part 1 – Frame By Frame Sprites With Core Animation Part 2 – Space Time Part 3 – Scrolling Hell Part 4 – Parallax Scrolling
iOS jabber聊天应用开发：客户端开发	http://mobile.tutsplus.com/tutorials/iphone/building-a-jabber-client-for-ios-interface-setup/ http://mobile.tutsplus.com/tutorials/iphone/building-a-jabber-client-for-ios-custom-chat-view-and-emoticons/
iOS jabber聊天应用开发：服务器搭建	http://mobile.tutsplus.com/tutorials/iphone/building-a-jabber-client-for-ios-server-setup/
iOS快速入门：	http://www.jonathanhui.com/ios
objc学习：	http://www.jonathanhui.com/objective-c https://github.com/carlbrown/PDKeychainBindingsController https://github.com/ldandersen/scifihifi-iphone
KeyChain封装，安全存数据：	http://developer.apple.com/library/mac/#documentation/Security/Conceptual/keychainServConcepts/02concepts/concepts.html http://developer.apple.com/library/ios/#samplecode/GenericKeychain/Introduction/Intro.html#//apple_ref/doc/uid/DTS40007797-Intro-DontLinkElementID_2
声音相关：	http://purplelilgirl.tumblr.com/post/9377269385/making-that-talking-app http://dirac.dspdimension.com/Dirac3_Technology_Home_Page/Dirac3_Technology.html
弹珠游戏：	http://www.crowsoft.com.ar/wordpress/?p=19
spring board类UI:	https://github.com/rigoneri/myLauncher
MacOS&iOS upnp:	http://code.google.com/p/upnpx
ios block learn:	http://ios-blog.co.uk/iphone-development-tutorials/programming-with-blocks-an-overview/ https://github.com/zwaldowski/BlocksKit
弹出框中输入用户名与密码：	https://github.com/enormego/EGOTextFieldAlertView
jailbreak iphone发送sms:	http://code.google.com/p/iphone-sms/
搜索itune里app的url scheme:	https://github.com/Zwapp/schemes-scanner
横竖屏切换自动调整位置：	https://github.com/michaeltyson/TPMultiLayoutViewController
键盘出现与消失view自动移动避免遮挡：	https://github.com/michaeltyson/TPKeyboardAvoiding http://atastypixel.com/blog/a-drop-in-universal-solution-for-moving-text-fields-out-of-the-way-of-the-keyboard/
iOS类似firebug的web调试工具：	http://phonegap.github.com/weinre/
一个UI开源库tapkulibrary，集成了calendar,coverflow	https://github.com/devinross/tapkulibrary http://maniacdev.com/2010/09/tapku-an-amazing-open-source-ios-interface-library/
多列的TableView	https://github.com/Xenofex/MultiColumnTableViewForiOS
mac的一个桌面程序，开源的	http://homepage.mac.com/nathan_day/pages/popup_dock.xml
PSTreeGraph for iPad	https://github.com/epreston/PSTreeGraph
文件预览like QLPreviewController	https://github.com/rob-brown/RBFilePreviewer
Interface Builder中用自定义字体解决方案	https://github.com/0xced/FontReplacer
有shader的UILabe	https://github.com/nicklockwood/FXLabel
GCD学习	http://blog.slaunchaman.com/2011/02/28/cocoa-touch-tutorial-using-grand-central-dispatch-for-asynchronous-table-view-cells/ http://www.raywenderlich.com/4295/multithreading-and-grand-central-dispatch-on-ios-for-beginners-tutorial https://github.com/SlaunchaMan/GCDExample
让UITableView中有search功能教程	http://www.edumobile.org/iphone/miscellaneous/how-to-search-option-enable-in-tableview-in-iphone/
iPad阅读器开发	http://mobile.tutsplus.com/tutorials/iphone/building-an-ipad-reader-for-war-of-the-worlds/ http://mobile.tutsplus.com/tutorials/iphone/ios-sdk-using-a-slider-to-scrub-a-pdf-reader/ http://mobile.tutsplus.com/tutorials/iphone/ios-sdk-adding-a-table-of-contents-to-an-ipad-reader/
ipad UI 24个免费资源	http://www.cocoachina.com/applenews/devnews/2011/0915/3237.html
TableView的扩展	https://github.com/OliverLetterer/UIExpandableTableView
Orge3D for iOS	http://code.google.com/p/gamekit/ http://www.tonybhimani.com/2011/07/09/ogre3d-sdk-1-7-3-for-apple-iphone-ios-howto/
文档比Three20更全的类Three20库	https://github.com/jverkoey/nimbus
iOS Boilerplate一个库集合，方便开发	http://iosboilerplate.com/ https://github.com/gimenete/iOS-boilerplate
openCV for iOS	http://code.google.com/p/edgy-camera-ios/ https://github.com/BloodAxe/opencv-ios-template-project https://github.com/BloodAxe/OpenCV-iOS-build-script http://computer-vision-talks.com/2011/02/building-opencv-for-iphone-in-one-click/ http://computer-vision-talks.com/2011/01/using-opencv-in-objective-c-code/ http://computer-vision-talks.com/2011/08/a-complete-ios-opencv-sample-project/
PageCurl for iOS	https://github.com/xissburg/XBPageCurl https://github.com/raweng/FlipView https://github.com/Split82/HMGLTransitions http://api.mutado.com/mobile/paperstack/
iOS PDF实例	http://www.cocoachina.com/bbs/read.php?tid=75173 https://github.com/vfr/Reader
Core Animation	http://nachbaur.com/blog/core-animation-part-1 http://nachbaur.com/blog/core-animation-part-2 http://nachbaur.com/blog/core-animation-part-3 http://nachbaur.com/blog/core-animation-part-4
Core Data注意的地方	http://nachbaur.com/blog/smarter-core-data http://iphonedevelopment.blogspot.com/2009/09/core-data-migration-problems.html
GCD	http://nachbaur.com/blog/using-gcd-and-blocks-effectively http://deusty.blogspot.com/2011/01/multi-core-ios-devices-are-coming-are.html
MKMapView zoom level	http://troybrant.net/blog/2010/01/mkmapview-and-zoom-levels-a-visual-guide/ http://troybrant.net/blog/2010/01/set-the-zoom-level-of-an-mkmapview/
HTML parser	http://www.cocoanetics.com/2011/09/taming-html-parsing-with-libxml-1/ https://github.com/topfunky/hpple https://github.com/zootreeves/Objective-C-HMTL-Parser
openGLES	http://www.ityran.com/portal.php
Charts绘制开源库	http://code.google.com/p/core-plot/ https://github.com/ReetuRaj/MIMChart-Library 说明文档
apple 私有api文档	http://hexorcist.com/private_frameworks/html/main.html
类safari的切换页面库	https://github.com/100grams/HGPageScrollView
自定义Slider组件	https://github.com/buildmobile/iosrangeslider iOS Range Slider Part 1 iOS Range Slider Part 2
一些自定义组件：	自定义UIAlertView 自定义BadgeView 自定义数字键盘
QR Encoder二维码识别	https://github.com/jverkoey/ObjQREncoder
xml解析库	https://github.com/ZaBlanc/RaptureXML
wapper map for iOS	https://github.com/yinkou/OCMapView
iOS unitity	https://github.com/ZaBlanc/iBoost https://github.com/escoz/QuickDialog/
socket	http://code.google.com/p/cocoaasyncsocket/
custom camera view	https://github.com/pmark/Helpful-iPhone-Utilities http://www.codza.com/custom-uiimagepickercontroller-camera-view
本地天气demo	http://www.cocoachina.com/bbs/read.php?tid-72558-fpage-3.html
浏览器飞行动画	http://www.cocoachina.com/downloads/video/2011/1002/3313.html
切换动画demo	http://www.cocoachina.com/bbs/read.php?tid-76431-page-1.html
Automatic Reference Counting	http://www.mikeash.com/pyblog/friday-qa-2011-09-30-automatic-reference-counting.html
voip for ios development	http://trac.pjsip.org/repos/wiki/Getting-Started/iPhone http://www.piemontewireless.net/PJSip155_and_iPhoneSDK312 http://code.google.com/p/siphon/
图像处理	http://www.cocoachina.com/downloads/code/2011/1009/3335.html
脚本自动生成push notification所需证书	https://github.com/jprichardson/GeneratePushCerts
自定义ActivityIndicator	https://github.com/hezi/HZActivityIndicatorView
开源库for ios	boost for iphone ffmpeg for iphone opencore amr for iphone
iOS网络相关	bonjour

本文链接

给状态条加上图标的代码

2011-10-13T01:10:00Z

- (void) addStatusBarImageNamed:(NSString*)image removeOnExit: (BOOL) remove {
if(_statusbarimage!=nil && _responds) {
if ([[[NSUserDefaults standardUserDefaults] objectForKey:@"statusBarEnabled"] integerValue] == 1)
[self removeStatusBarImageNamed:_statusbarimage];
statusbarimage=image;
}
if (_responds) {
if ([[[NSUserDefaults standardUserDefaults] objectForKey:@"statusBarEnabled"] integerValue] == 1)
[super addStatusBarImageNamed:image removeOnExit: remove];
}
}

本文链接

设置uiview背景图的方法之一

2011-09-21T07:09:00Z

self.view.backgroundColor = [UIColor colorWithPatternImage: [UIImage imageNamed:@"1.jpg"] ];

本文链接

xcode 4 下找EXC_BAD_ACCESS错误原因

2011-09-08T03:37:00Z

xcode4 4.x

EXC_BAD_ACCESS这个问题一直不好调试，之前有看到过说配置一个环境变量可以很方便的跟踪问题，因此试了一下，发现还真是方便了很多，以下是XCODE 4的配置方法：

Edit Scheme->Arguments->Environment variables

增加 NSZombieEnabled ，设置为YES，并勾选上，OK，再次运行，在console就会显示出出错的地方了.

(另外：

NSLog(@"id : %@",id); //id is integer,should be printed as %d

像这样的语句也会引起EXC_BAD_ACCESS，大家要注意了哦

)

本文链接

转--如何解决EXC_BAD_ACCESS错误

2011-09-03T01:29:00Z

写程序遇到 Bug 并不可怕，大部分的问题，通过简单的 Log 或者代码分析并不难找到原因所在。但是在 Objective-C 编程中遇到 EXC_BAD_ACCESS 问题的时候，通过简单常规的手段很难发现问题。这篇文章，给大家介绍一个常用的查找 EXC_BAD_ACCESS 问题根源的方法。

首先说一下 EXC_BAD_ACCESS 这个错误，可以这么说，90%的错误来源在于对一个已经释放的对象进行release操作。举一个简单的例子来说明吧，首先看一段Java代码：

public class Test{
        public static void main(String[] args){
                String s = “This is a test string”;
                s = s.substring(s.indexOf(“a”),(s.length()));
                System.out.println(s);

        }
}

这种写法在Java中很常见也很普遍，这不会产生任何问题。但是到了 Objective-C 中，就会出事，考虑这个程序：

#import <Foundation/Foundation.h>

int main (int argc, const char * argv[]) {
NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
        NSString* s = [[NSString alloc]initWithString:@”This is a test string”];
        s = [s substringFromIndex:[s rangeOfString:@"a"].location];//内存泄露
        [s release];//错误释放
[pool drain];//EXC_BAD_ACCESS
return 0;
}

    这个例子当然狠容易的看出问题所在，如果这段代码包含在一个很大的逻辑中，确实容易被忽略。Objective-C 这段代码有三个致命问题：1、内存泄露；2、错误释放；3、造成 EXC_BAD_ACCESS 错误。

1， NSString* s = [[NSString alloc]initWithString:@”This is a test string”]; 创建了一个 NSString Object，随后的 s = [s substringFromIndex:[s rangeOfString:@"a"].location]; 执行后，导致创建的对象引用消失，直接造成内存泄露。

2，错误释放。[s release]; 这个问题，原因之一是一个逻辑错误，以为 s 还是我们最初创建的那个 NSString 对象。第二是因为从 substringFromIndex:(NSUInteger i) 这个方法返回的 NSString 对象，并不需要我们来释放，它其实是一个被 substringFromIndex 方法标记为 autorelease 的对象。如果我们强行的释放了它，那么会造成 EXC_BAD_ACCESS 问题。

3， EXC_BAD_ACCESS。由于 s 指向的 NSString 对象被标记为 autorelease, 则在 NSAutoreleasePool 中已有记录。但是由于我们在前面错误的释放了该对象，则当 [pool drain] 的时候，NSAutoreleasePool 又一次的对它记录的 s 对象调用了 release 方法，但这个时候 s 已经被释放不复存在，则直接导致了 EXC_BAD_ACCESS问题。

那么，知道了 EXC_BAD_ACCESS 的诱因之一后，如何快速高效的定位问题？

1: 为工程运行时加入 NSZombieEnabled 环境变量，并设为启用，则在 EXC_BAD_ACCESS 发生时，XCode 的 Console 会打印出问题描述。

首先双击 XCode 工程中，Executables 下的可执行模组，

在弹出窗口中，Variables to be set in the environment，添加 NSZombieEnabled，并设定为 YES，点击选中复选框启用此变量。

这样，运行上述 Objective-C 时会看到控制台输出：Untitled[3646:a0f] *** -[CFString release]: message sent to deallocated instance 0x10010d340

这条消息对于定位问题有很好的提示作用。但是很多时候，只有这条提示是不够的，我们需要更多的提示来帮助定位问题，这时候再加入 MallocStackLogging 来启用malloc记录。

当错误发生后，在终端执行：

malloc_history ${App_PID} ${Object_instance_addr}

则会获得相应的 malloc 历史记录，比如对于上一个控制台输出

Untitled[3646:a0f] *** -[CFString release]: message sent to deallocated instance 0x10010d340

则我们可以在终端执行，结果如下：

这样就可以很快的定位出问题的代码片段了，注意输出的最后一行，，，这行虽然不是问题的最终原因，但是离问题点已经很近了，随着它找下去，八成就会找到问题。

本文链接

再转动画实现

2011-08-31T05:59:00Z

最普通动画:
//开始动画
[UIView beginAnimations:nil context:nil];
//设定动画持续时间
[UIView setAnimationDuration:2];
//动画的内容
frame.origin.x += 150;
[img setFrame:frame];
//动画结束
[UIView commitAnimations];

连续动画:一个接一个地显示一系列的图像
NSArray *myImages = [NSArray arrayWithObjects:
[UIImage imageNamed:@"myImage1.png"],
[UIImage imageNamed:@"myImage2.png"],
[UIImage imageNamed:@"myImage3.png"],
[UIImage imageNamed:@"myImage4.gif"], nil];

UIImageView *myAnimatedView = [UIImageView alloc];
[myAnimatedView initWithFrame:[self bounds]];
myAnimatedView.animationImages = myImages; //animationImages属性返回一个存放动画图片的数组
myAnimatedView.animationDuration = 0.25; //浏览整个图片一次所用的时间
myAnimatedView.animationRepeatCount = 0; // 0 = loops forever 动画重复次数
[myAnimatedView startAnimating];
[self addSubview:myAnimatedView];
[myAnimatedView release];

CATransition Public API动画:
CATransition *animation = [CATransition animation];
//动画时间
animation.duration = 0.5f;
//先慢后快
animation.timingFunction = UIViewAnimationCurveEaseInOut;
animation.fillMode = kCAFillModeForwards;
//animation.removedOnCompletion = NO;

//各种动画效果
/*
kCATransitionFade;
kCATransitionMoveIn;
kCATransitionPush;z
kCATransitionReveal;
*/
/*
kCATransitionFromRight;
kCATransitionFromLeft;
kCATransitionFromTop;
kCATransitionFromBottom;
*/
//各种组合
animation.type = kCATransitionPush;
animation.subtype = kCATransitionFromRight;

[self.view.layer addAnimation:animation forKey:@"animation"];

CATransition Private API动画:
animation.type可以设定为以下效果
动画效果汇总:
/*
suckEffect（三角）

rippleEffect（水波抖动）

pageCurl（上翻页）

pageUnCurl（下翻页）

oglFlip（上下翻转）

cameraIris/cameraIrisHollowOpen/cameraIrisHollowClose （镜头快门，这一组动画是有效果，只是很难看，不建议使用

UIView Animations 动画:
[UIView beginAnimations:@"animationID" context:nil];
[UIView setAnimationDuration:0.5f];
[UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];
[UIView setAnimationRepeatAutoreverses:NO];
//以下四种效果
/*
[UIView setAnimationTransition:UIViewAnimationTransitionFlipFromLeft forView:self.view cache:YES];//oglFlip, fromLeft
[UIView setAnimationTransition:UIViewAnimationTransitionFlipFromRight forView:self.view cache:YES];//oglFlip, fromRight
[UIView setAnimationTransition:UIViewAnimationTransitionCurlUp forView:self.view cache:YES];
[UIView setAnimationTransition:UIViewAnimationTransitionCurlDown forView:self.view cache:YES];
*/

[self.view exchangeSubviewAtIndex:1 withSubviewAtIndex:0];
[UIView commitAnimations];
IOS4.0新方法:
方法: +(void)animateWithDuration:(NSTimeInterval)duration animations:(void (^)(void))animations;
+ (void)animateWithDuration:(NSTimeInterval)duration animations:(void (^)(void))animations completion:(void (^)(BOOL finished))completion; //多一个动画结束后可以执行的操作.

//下边是嵌套使用,先变大再消失的动画效果.
[UIView animateWithDuration:1.25 animations:^{
CGAffineTransform newTransform = CGAffineTransformMakeScale(1.2, 1.2);
[firstImageView setTransform:newTransform];
[secondImageView setTransform:newTransform];}
completion:^(BOOL finished){
[UIView animateWithDuration:1.2 animations:^{
[firstImageView setAlpha:0];
[secondImageView setAlpha:0];} completion:^(BOOL finished){
[firstImageView removeFromSuperview];
[secondImageView removeFromSuperview]; }];
}];

本文链接

关于Iphone开发得一些案例及常用知识（转过来的参考用）

2011-08-29T08:32:00Z

tabBar透明的效果
http://www.cocoachina.com/bbs/read.php?tid=17815

[[UIApplication sharedApplication] setStatusBarStyle:UIStatusBarStyleBlackTranslucent animated:YES];

--------------------------

设置Table Cell的背景图的公用类代码
http://www.cocoachina.com/downloads/video/2010/0521/1531.html

#import <Foundation/Foundation.h>
#import <UIKit/UIKit.h>

@interface UITableViewCell (UITableViewCellExt)

- (void)setBackgroundImage:(UIImage*)image;
- (void)setBackgroundImageByName:(NSString*)imageName;

@end

#import "UITableViewCellExt.h"

@implementation UITableViewCell (UITableViewCellExt)

- (void)setBackgroundImage:(UIImage*)image
{
    UIImageView *imageView = [[UIImageView alloc] initWithImage:image];
    imageView.contentMode = UIViewContentModeCenter;
    self.backgroundView = imageView;
    [imageView release];

}

- (void)setBackgroundImageByName:(NSString*)imageName
{
    [self setBackgroundImage:[UIImage imageNamed:imageName]];
}
@end

调用示例：

// Customize the appearance of table view cells.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {

    static NSString *CellIdentifier = @"Cell";

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];

    if (cell == nil) {
        cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];

        cell.selectionStyle = UITableViewCellSelectionStyleNone;

        [cell setBackgroundImageByName:@"text-background.png"];


    }

    return cell;
}

-------------------------------------
iPhone SDK 解析 xml的官方示例代码
http://www.cocoachina.com/downloads/video/2010/0520/1523.html

----------------------------------------------

把图片切成圆角代码
http://www.cocoachina.com/bbs/read.php?tid-1757.html

static void addRoundedRectToPath(CGContextRef context, CGRect rect, float ovalWidth,
                 float ovalHeight)
{
    float fw, fh;
    if (ovalWidth == 0 || ovalHeight == 0) {
    CGContextAddRect(context, rect);
    return;
    }

    CGContextSaveGState(context);
    CGContextTranslateCTM(context, CGRectGetMinX(rect), CGRectGetMinY(rect));
    CGContextScaleCTM(context, ovalWidth, ovalHeight);
    fw = CGRectGetWidth(rect) / ovalWidth;
    fh = CGRectGetHeight(rect) / ovalHeight;

    CGContextMoveToPoint(context, fw, fh/2);  // Start at lower right corner
    CGContextAddArcToPoint(context, fw, fh, fw/2, fh, 1);  // Top right corner
    CGContextAddArcToPoint(context, 0, fh, 0, fh/2, 1); // Top left corner
    CGContextAddArcToPoint(context, 0, 0, fw/2, 0, 1); // Lower left corner
    CGContextAddArcToPoint(context, fw, 0, fw, fh/2, 1); // Back to lower right

    CGContextClosePath(context);
    CGContextRestoreGState(context);
}

+ (id) createRoundedRectImage:(UIImage*)image size:(CGSize)size
{
    // the size of CGContextRef
    int w = size.width;
    int h = size.height;

    UIImage *img = image;
    CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();
    CGContextRef context = CGBitmapContextCreate(NULL, w, h, 8, 4 * w, colorSpace, kCGImageAlphaPremultipliedFirst);
    CGRect rect = CGRectMake(0, 0, w, h);

    CGContextBeginPath(context);
    addRoundedRectToPath(context, rect, 10, 10);
    CGContextClosePath(context);
    CGContextClip(context);
    CGContextDrawImage(context, CGRectMake(0, 0, w, h), img.CGImage);
    CGImageRef imageMasked = CGBitmapContextCreateImage(context);
    CGContextRelease(context);
    CGColorSpaceRelease(colorSpace);
    return [UIImage imageWithCGImage:imageMasked];
}

直接调用 createRoundedRectImage....
返回圆角图片
圆角大小自行修改 CGContextAddArcToPoint....

-------------------------------
检测iPhone／iPod Touch／iPad设备类型
http://www.cocoachina.com/bbs/read.php?tid-20994.html

-------------------------------------
iPhone上气泡式聊天的代码
http://www.cocoachina.com/downloads/video/2010/0510/1379.html

聊天程序--(UDP通信，bubble代码）
http://www.cocoachina.com/bbs/read.php?tid-24324-fpage-2.html

第一个iphone小程序（实现聊天功能）
http://www.cocoachina.com/bbs/read.php?tid-24956-fpage-2.html
----------------------------------------
ExpanderController可伸缩框架的代码
http://www.cocoachina.com/downloads/video/2010/0510/1368.html
-------------------------------------------
一段模拟水波纹的代码，希望对大家有用
http://www.cocoachina.com/downloads/video/2010/0506/1351.html
-------------------------------
根据经纬度计算两点之间距离的Obcective-C代码
http://www.cocoachina.com/downloads/video/2010/0506/1344.html

其中其中er 就是地球椭球半径，对于google map使用 6378137 就可以了。函数的调用非常简单，几乎使用任何平台:)
#define PI 3.1415926
double LantitudeLongitudeDist(double lon1,double lat1,
                              double lon2,double lat2)
{
    double er = 6378137; // 6378700.0f;
    //ave. radius = 6371.315 (someone said more accurate is 6366.707)
    //equatorial radius = 6378.388
    //nautical mile = 1.15078
    double radlat1 = PI*lat1/180.0f;
    double radlat2 = PI*lat2/180.0f;
    //now long.
    double radlong1 = PI*lon1/180.0f;
    double radlong2 = PI*lon2/180.0f;
    if( radlat1 < 0 ) radlat1 = PI/2 + fabs(radlat1);// south
    if( radlat1 > 0 ) radlat1 = PI/2 - fabs(radlat1);// north
    if( radlong1 < 0 ) radlong1 = PI*2 - fabs(radlong1);//west
    if( radlat2 < 0 ) radlat2 = PI/2 + fabs(radlat2);// south
    if( radlat2 > 0 ) radlat2 = PI/2 - fabs(radlat2);// north
    if( radlong2 < 0 ) radlong2 = PI*2 - fabs(radlong2);// west
    //spherical coordinates x=r*cos(ag)sin(at), y=r*sin(ag)*sin(at), z=r*cos(at)
    //zero ag is up so reverse lat
    double x1 = er * cos(radlong1) * sin(radlat1);
    double y1 = er * sin(radlong1) * sin(radlat1);
    double z1 = er * cos(radlat1);
    double x2 = er * cos(radlong2) * sin(radlat2);
    double y2 = er * sin(radlong2) * sin(radlat2);
    double z2 = er * cos(radlat2);
    double d = sqrt((x1-x2)*(x1-x2)+(y1-y2)*(y1-y2)+(z1-z2)*(z1-z2));
    //side, side, side, law of cosines and arccos
    double theta = acos((er*er+er*er-d*d)/(2*er*er));
    double dist  = theta*er;
    return dist;
}
----------------------------
巴黎自行车信息查询软件源码
http://www.cocoachina.com/downloads/video/2010/0429/1266.html
--------------------------------
自制 iPhone DataGrid 数据列表组件，支持行列锁定
http://www.cocoachina.com/downloads/video/2010/0429/1267.html
--------------------------------
iPhone播放本地视频的代码
http://www.cocoachina.com/downloads/video/2010/0428/1260.html
----------------------------
UIWebView里面长按一个链接后自定义弹出菜单
http://www.cocoachina.com/iphonedev/sdk/2010/0716/1879.html
-------------------------------------------
iPhone上画面切换特效及代码
http://www.cocoachina.com/downloads/video/2010/0419/1123.html
-------------------------
永远的扫雷英雄(开源) 登场
http://www.cocoachina.com/bbs/read.php?tid-12818.html
--------------------------------
在iPhone中实现图片缩放
http://www.cocoachina.com/iphonedev/toolthain/2009/0611/198.html
-----------------
创建iPhone锁定划动条的方法
http://www.cocoachina.com/iphonedev/toolthain/2009/0611/224.html
-------------
UICoverFlowLayer例子：制作iPhone的Cover Flow效果
http://www.cocoachina.com/iphonedev/toolthain/2009/0611/196.html
-----------------------------
如何在iPhone程序读取数据时显示进度窗
http://www.cocoachina.com/iphonedev/toolthain/2009/0611/173.html
-----------------
UITabBarController 保存调整后的more选项（增加所有TabBar之间切换).
http://www.cocoachina.com/bbs/read.php?tid-12424.html
--------------------------------------------
NSStirng、NSArray、以及枚举(Method小集合)
http://www.cocoachina.com/bbs/read.php?tid-7735.html
------------
UIview动画
http://www.cocoachina.com/bbs/read.php?tid-8035-keyword-demo.html

http://www.cocoachina.com/bbs/read.php?tid-11343.html
----------------
搜索功能
http://www.cocoachina.com/bbs/read.php?tid-5869.html

-------------
UILabel显示换行的方法
UILabel*label;

//设置换行
label.lineBreakMode = UILineBreakModeWordWrap;
label.numberOfLines = 0;

换行符还是\n
比如NSString * xstring=@"lineone\nlinetwo"

记得要把label的高度设置的足够显示多行内容。

------------------
手把手教你做iphone的soap应用(webservice)
http://www.cocoachina.com/bbs/read.php?tid-16561-fpage-2.html
---------------------------
点击Table一行弹出下拉一排按钮的TableViewCell类
http://www.cocoachina.com/bbs/read.php?tid-23065-fpage-2.html

http://www.cocoachina.com/bbs/read.php?tid=21494&page=1#131711
-----------------
一些iPhone开源项目代码
http://www.cocoachina.com/bbs/read.php?tid-4532-fpage-2.htm
----------------------
<iOS4>后台运行(Multitasking)以及本地通知(Local Notifications) 有图，有书，有代码，统一打包
http://www.cocoachina.com/bbs/read.php?tid-20423-fpage-2.html
-------------------
开源一个基于MultiTouch事件图片移动和缩放的demo
http://www.cocoachina.com/bbs/read.php?tid-25387-fpage-2.html

本文链接

用uiwebview打开pdf,word,excel

2011-08-29T03:51:00Z

在iphone程序中打开word、execl、pdf等文档
用UIWebView就可以了
-(void)loadDocument:(NSString)documentName inView:(UIWebView)webView
{
    NSString path = [[NSBundle mainBundle] pathForResource:documentName ofType:nil];
    NSURL url = [NSURL fileURLWithPath:path];
    NSURLRequest *request = [NSURLRequest requestWithURL:url];
    [webView loadRequest:request];
}

// Calling -loadDocument:inView:
[self loadDocument:@"test.doc" inView:self.myWebview];
本文链接

网络请求侦听工具

2011-08-26T10:21:00Z

1.paraos 多平台

通过共享出wifi热点

2.Charls web debug proxy 多平台

通过设置网络代理的方法

本文链接

整理被appstore 拒绝审核通过的原因

2011-08-26T10:18:00Z

1. 由于使用了私有方法

activeInstance

dismissKeyboard

@try

{

Class UIKeyboardImpl = NSClassFromString(@"UIKeyboardImpl");

id activeInstance = [UIKeyboardImpl performSelector:@selector(activeInstance)];

[activeInstance performSelector:@selector(dismissKeyboard)];

}

@catch (NSException *exception)

{

NSLog(@"%@", exception);

}

2.metadata 描述有问题

带有支持ios 5字样，在10月10号之前

3.带有重大bug,使用测试账户无法登陆成功，提示网络错误

这个可能是在美国连接公司网站出错有关

Apps that are “beta”, “demo”, “trial”, or “test” versions will be rejected

app的登陆页当中带有beta1字样

5. 视频流不支持3g网络下带宽控制问题，没有64/128k的连接

6.收集用户的地理位置，且本应用与地理位置无关

本文链接

博客园_Our practice

转 iphone开发资料汇总（很多实用的东东）

给状态条加上图标的代码

设置uiview背景图的方法之一

xcode 4 下找EXC_BAD_ACCESS错误原因

转--如何解决EXC_BAD_ACCESS错误

再转动画实现

本文链接

关于Iphone开发得一些案例及常用知识（转过来的参考用）

用uiwebview打开pdf,word,excel

网络请求侦听工具

整理 被appstore 拒绝审核通过的原因

整理被appstore 拒绝审核通过的原因