- (void)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)options
{UIRemoteNotificationType myTypes = UIRemoteNotificationTypeSounds | UIRemoteNotificationTypeBadges;//通知类型：声音和Badge[application registerForRemoteNotificationTypes:myTypes];//注册
}

- (void)application:(UIApplication *)application didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)token
{//...获得Token，发送Token给应用服务器
}
//注册失败的处理
- (void)application:(UIApplication *)application didFailToRegisterForRemoteNotificationsWithError:(NSError*)error
{....
}

- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo

-  (UIRemoteNotificationType)enabledRemoteNotificationTypes

//reportView.m
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{//使用UIViewController来响应触摸消息，这种方法更好reportViewController *controller = [UIViewController alloc] init];[controller manageTouches:touches];//使用响应者链来处理触摸消息
    [self.nextResponder manageTouches:touches];
}
- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event{[self.nextResponder manageTouches:touches];
}
- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event{[self.nextResponder manageTouches:touches];
}

//下面一个方法是利用在ReportView中获取到的touchs集合去控制程序中的各个元素做各种事情。下面的代码实现了一个类似于鼠标跟随的触摸跟随特效；
-(void)manageTouches:(NSSet*)touches{for (UITouch *touch in touches) {if (touch.phase == UITouchPhaseBegan) {CGPoint touchPos = [touch locationInView:self.view];startField.text =[NSString stringWithFormat:@"Begin:%3.0f,%3.0f",touchPos.x,touchPos.y];}else if(touch.phase == UITouchPhaseMoved){bottomLabel.text = @"Touch 正在移动中...";CGPoint touchPos = [touch locationInView:self.view];moveField.text = [NSString stringWithFormat:@"move:%3.0f,%3.0f",touchPos.x,touchPos.y];[self touchMoveWithPoint:touchPos];}else if(touch.phase == UITouchPhaseEnded){if (touch.tapCount>1) {bottomLabel.text = [NSString stringWithFormat:@"Taps:%2i",touch.tapCount];}else{bottomLabel.text = @"等待交互...";}CGPoint touchPos = [touch locationInView:self.view];endField.text = [NSString stringWithFormat:@"End:%3.0f,%3.0f",touchPos.x,touchPos.y];}}
}

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentDirectory = [paths objectAtIndex:0];
NSString *docPath = [documentsDirectory stringByAppendingPathComponent:dbFile];

NSFileManager *fileManager = [NSFileManager defaultManager];
success = [fileManager copyItemAtPath:bundlePath toPath:docPath error:&error];

[[UIDevice currentDevice] beginGeneratingDeviceOrientationNotifications];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(deviceDidRotate:) name:@"UIDeviceOrientationDidChangeNotification" object:nil];

- (void)viewDidLoad{UIAccelerometer *myAccel = [UIAccelerometer sharedAccelerometer];myAccel.updateInterval = .1;myAccel.delegate = self;[super viewDidLoad];
}

- (void)accelerometer:(UIAccelerometer *)accelerometer didAccelerate:(UIAcceleration *)acceleration
{CGPoint curCenter = [redBall center];float newX = 3 * acceleration.x + curCenter.x;float newY = 3 * acceleration.y + curCenter.y;if (newX < 25) newX = 25;if (newY < 25) newY = 25;if (newX > 295) newX = 295;if (newY >455) newY = 455;redBall.center = CGPointMake(newX,newY);
}

gravX = (acceleration.x * kFilteringFactor) + (gravX * (1 - kFilteringFactor));
gravY = (acceleration.y * kFilteringFactor) + (gravY * (1 - kFilteringFactor));
float newX = 3 * gravX + curCenter.x;
float newY = 3 * gravY + curCenter.y;

gravX = (acceleration.x * kFilteringFactor) + (gravX * (1 - kFilteringFactor));
gravY = (acceleration.y * kFilteringFactor) + (gravY * (1 - kFilteringFactor));
float MoveX = acceleration.x - gravX;
float moveY = acceleration.y - gravY;

- (void)accelerometer:(UIAccelerometer *)accelerometer didAccelerate:(UIAcceleration *)acceleration
{
//accelX/Y/Z 这是收集滤出信息：创建一个低通滤波器accelX = ((acceleration.x * kFilteringFactor) + (accelX * (1 - kFilteringFactor)));accelY =  ((acceleration.y * kFilteringFactor) + (accelY * (1 - kFilteringFactor)));accelZ =  ((acceleration.z * kFilteringFactor) + (accelZ * (1 - kFilteringFactor)));
//测量移动：获取相对干净的移动数据float moveX = acceleration.x - accelX;float moveY = acceleration.y - accelY;float moveZ = acceleration.z - accelZ;
//标记开始时间:一开始不需要接收发送地任何加速数据if (!starttime){starttime = acceleration.timestamp;}
//当其中一个加速计上升到0.3g以上时，开始查看移动。发生这种情况时，保存最高移动量所在的方向，在移动量低于0.3g之前继续测量。要确保至少经历了1/10秒，以便了解移动时没有间断if (acceleration.timestamp > starttime + 1 && (fabs(moveX) >= .3 || fabs(moveY) >= .3 ||fabs(moveZ) >= .3)){//保存最大移动量if (fabs(moveX) > fabs(moveVector)) {moveVector = moveX;moveDir = (moveVector > 0 ? @"Right" : @"Left");}if (fabs(moveY) > fabs(moveVector)) {moveVector = moveY;moveDir = (moveVector > 0 ? @"Up" : @"Down");}if (fabs(moveZ) > fabs(moveVector)) {moveVector = moveZ;moveDir = (moveVector > 0 ? @"Forward" : @"Back");}lasttime = acceleration.timestamp;}else if (moveVector && acceleration.timestamp > lasttime + .1){myReport.text = [movDir stringByAppendingFormat:@": %f.", moveVector];moveDir = [NSString string];moveVector = 0;}
}    

- (BOOL)didShake:(UIAcceleration *)acceleration
{accelX = ((acceleration.x * kFilteringFactor) + (accelX * (1 - kFilteringFactor)));accelY = ((acceleration.y * kFilteringFactor) + (accelX * (1 - kFilteringFactor)));float moveX = acceleration.x - accelX;float moveY = acceleration.y - accelY;if (lasttime && acceleration.timestamp > lasttime + .25)//摇动一次之后等待<1>{BOOL result;if (shakecount >= 3 && biggestshake >= 1.25) {result = YES;}else{result = NO;}lasttime = 0;shakecount = 0;biggestshake = 0;return result;}else {if (fabs(moveX) >= fabs(moveY)) //检查x轴的移动<2>{if ((fabs(moveX) > .75 ) && (moveX * lastX <= 0)){lasttime = acceleration.timestamp;shakecount++;lastX = moveX;if (fabs(moveX) > biggestshake) biggestshake = fabs(moveX);}}else {if ((fabs(moveY) > .75 ) && (moveY * lastY <= 0))//检查y轴的移动<3>{lasttime = acceleration.timestamp;shakecount++;lastY = moveY;if (fabs(moveY) > biggestshake) biggestshake = fabs(moveY);}}return NO;}
}

- (void)accelerometer:(UIAccelerometer *)accelerometer didAccelerate:(UIAcceleration *)acceleration
{if ([self didShake:(UIAcceleration *)acceleration]){self.view.backgroundColor = [self nextColor];}
}

- (void)viewDidLoad
{CLLocationManager *locationManager = [[[CLLocationManager alloc init] autorelease];if (locationManager.headingAvailable == YES) {//确保设备支持罗盘locationManager.delegate = self;[locationManager startUpdatingHeading];}
}

- (void)locationManager:(CLLocationManager *)manager didUpdateHeading:(CLHeading *)heading
{self.heading = heading;
}

- (void)viewDidLoad{UIImage *image1 = [UIImage imageNamed:@"1.jpg"];UIImage *image2 = [UIImage imageNamed:@"2.jpg"];UIImage *image3 = [UIImage imageNamed:@"3.jpg"];UIImage *image4 = [UIImage imageNamed:@"4.jpg"];UIImageView *imageView = [[UIImageView alloc] initWithFrame:[[UIScreen mainScreen] bounds];imageView.animationImages = [NSArray arrayWithObjects:image1,image2,image3,image4,nil];imageView.animationDuration = 4;[imageView startAnimating];[self.view addSubView:imageView];[super viewDidLoad];
}

- (void)drawRect:(CGRect)rect
{UIImage *image1 = [UIImage imageNamed:@"1.jpg"];UIImage *image2 = [UIImage imageNamed:@"2.jpg"];UIImage *image3 = [UIImage imageNamed:@"3.jpg"];[image1 drawAtPoint:CGPointMake(0,0) blendMode:kCGBlendModeNormal alpha:.5];[image2 drawInRect:CGRectMake(10,10,140,210)];[image3 drawInRect:CGRectMake(170,240,140,210)];
}

UIImagePickerController *imagePicker = [[UIImagePickerController alloc] init];
imagePicker.delegate = self;
imagePicker.allowsImageEditing = NO;
[self presentModalViewController:imagePicker animated:YES];

UIImagePickerController *imagePicker = [[UIImagePickerController alloc] init];
imagePicker.delegate = self;
imagePicker.allowsEditing = NO;UIPopoverController *popover = [[UIPopoverController alloc] initWithContentViewController:imagePicker];
[popover presentPopoverFromRect:CGRectMake(0,0,320,480) inView:self.view permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];

if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]){}

imagePicker.sourceType = UIImagePickerControllerSourceTypeCamera;

UIImageWriteToSavedPhotosAlbum(yourImage,nil,nil,nil);

UIGraphicsBeginImageContext(myView.bounds.size);
[myView.layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage *collageImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
UIImageWriteToSavedPhotosAlbum(collageImage,nil,nil,nil);

MPMediaPickerController *picker = [[MPMediaPickerController alloc] initWithMediaTypes:MPMediaTypeMusic];
[picker setDelegate:self];
picker.allowsPickingMultipleItem = YES;//允许选择多个条目

[self presentModalViewController:picker animated:YES];

MPMusicPlayerController *player = [MPMusicPlayerController applicationMusicPlayer];//applicationMusicPlayer：基于应用程序进行媒体播放。如要使用主iPod应用程序的媒体播放功能，使用iPodMusicPlayer方法

- (void)mediaPicker:(MPMusicPlayerController *)mediaPicker didPickMediaItems:(MPMediaItemCollection *)mediaItemCollection
{[player setQueueWithItemCollection:mediaItemCollection];
}

NSString *filePath = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents/recording.caf"];NSDictionary *recordSettings = [[NSDictionary alloc] initWithObjectsAndKeys:[NSNumber numberWithFloat:44100.0], AVSampleRateKey,[NSNumber numberWithInt:kAudioFormatAppleLossless], AVFormatIDKey,[NSNumber numberWithInt:1], AVNumberOfChannelsKey, [NSNumber numberWithInt:AVAudioQualityMax], AVEncoderAudioQualityKey, nil];AVAudioRecorder *soundRecorder = [[AVAudioRecorder alloc] initWithURL:[NSURL fileURLWithPath:filePath] settings:recordSettings error:nil];

- (IBAction)toggleRecord:(id)sender
{if (recording){[soundRecorder stop];}else{[soundRecorder record];}recording = !recording;
}

NSString * filePath = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents/recording.caf"];
AVAudioPlayer *newPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWitPath:filePath] error:nil];
newPlayer.delegate = self;

NSString *filePath = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents/recording.caf"];AVAudioPlayer *newPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:filePath] error:nil];
newPlayer.delegate = self;
[newPlayer play];

AudioServicesPlaySystemSound(kSystemSoundID_Vibrate);

- (void)drawRect:(CGRect)rect
{CGContextRef ctx = UIGraphicsGetCurrentContext();CGContextBeginPath(ctx);CGContextAddArc(ctx,110,50,30,0,2*M_PI,1);CGContextFillPath(ctx);
}

- (void)viewDidLoad{[super viewDidLoad];UIGraphicsBeginImageContext(CGSizeMake(20,20));CGContextRef ctx = UIGraphicsGetCurrentContext();CGContextBeginPath(ctx);CGContextAddArc(ctx,10,10,10,0,2*M_PI,1);CGContextSetRGBFillColor(ctx,1,0,0,1);CGContextFillPath(ctx);UIImage *redBall = UIGraphicsGetImageFromCurrentImageContext();UIGraphicsEndImageContext();UIImageView *redBallView = [[UIImageView alloc] initWithImage:redBall];redBallView.center = CGPointMake(160,330);[self.view addSubView:redBallView];
}

CGAffineTransform myAffine = CGAffineTransformMakeRotation(.25*M_PI);
CGAffineTransformTranslate(myAffine, 100, 100);
CGContextConcatCTM(ctx, myAffine);

CGContextBeginPath(ctx);
CGContextAddArc(ctx,160,240,160,0,2*M_PI,1);
CGContextClip(ctx);

//步骤1：定义颜色空间
CGColorSpaceRef myColorSpace = CGColorSpaceCreateDeviceRGB();
//步骤2：创建渐变部件
CGFloat components[12] = {1,0,0,1,0,1,0,1,0,0,1,1};
CGFloat locations[3] = {0,.5,1};
CGGradientRef myGradient = CGGradientCreateWithColorComponents(myColorSpace,components,locations,(size_t)3);
//步骤3：绘制渐变
CGContextDrawLinearGradient(ctx, myGradient, CGPointMake(0,0),CGPointMake(320,480), NULL);
//步骤4：释放内存空间
CGColorSpaceRelease(myColorSpace);
CGGradientRelease(myGradient);

UIImage *origPic = [UIImage imageNamed:@"1.jpg"];
UIGraphicsBeginImageContext(origPic.size);
CGContextRef ctx = UIGraphicsGetCurrentContext();
//变换
CGContextRotateCTM(ctx, M_PI);
CGContextTranslateCTM(ctx, -origPic.size.width, -origPic.size.height);CGContextDrawImage(ctx, CGRectMake(0,0,origPic.size.width,origPic.size.height), [origPic CGImage]);CGContextSetLineWidth(ctx,20);
CGContextBeginPath(ctx);
CGContextMoveToPoint(ctx,0,0);
CGContextAddLineToPoint(ctx,origPic.size.width,origPic.size.height);
CGContextMoveToPoint(ctx,0,origPic.size.height);
CGContextAddLineToPoint(ctx,origPic.size.width,0);
CGContextSetStrokeColorWithColor(ctx, [[UIColor redColor] CGColor];
CGContextStrokePath(ctx);UIImage *newPic = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();

CGContextSelectFont (ctx, "Helvetica",20,kCGEncodingMacRoman);
CGContextSetTextDrawingMode(ctx,kCGTextFill);
CGAffineTransform flip = CGAffineTransformMake(1,0,0,-1,0,0);
CGContextSetTextMatrix(ctx, flip);
CGContextShowTextAtPoint(ctx, 20, 85, "A Quartz Example",16);

[UIView beginAnimation:nil context:NULL];
CGAffineTransform moveTransform = CGAffineTransformMakeTranslation(200,200);
[plane.layer setAffineTransform:moveTransform];
plane.layer.opacity = 1;
[UIView commitAnimations];

CABasicAnimation *opAnim = [CABasicAnimation animationWithKeyPath:@"opacity"];
opAnim.duration = 3.0;
opAnim.fromValue = [NSNumber numberWithFloat:.25];
opAnim.toValue = [NSNumber numberWithFloat:1.0];
opAnim.cumulative = YES;
cumulative.repeatCount = 2;
[plane.layer addAnimation:opAnim forKey:@"animateOpacity"];
CGAffineTransform moveTransform = CGAffineTransformMakeTranslation(200,200);
CABasicAnimation *moveAnimation = [CABasicAnimation animationWithKeyPath:@"transform"];
moveAnim.duration = 6.0;
opAnim.toValue = [NSValue valueWithCATransform3D:CATransform3DMakeAffineTransform(moveTransform)];
[plane.layer addAnimation:moveAnim forKey:@"animateTransform"];

NSURL *myURL = [NSURL URLWithString:@"http://www.example.com"];
NSMutableURLRequest *myRequest = [NSMutableURLRequest requestWithURL:myURL];
[myRequest setValue:@"text/xml" forHTTPHeaderField:@"Content-type"];
[myRequest setHTTPMethod:@"POST"];
NSData *myData = [@"someText" dataUsingEncoding:NSASCIIStringEncoding];
[myRequest setHTTPBody:myData];NSURLResponse *response;
NSError *error;
NSData *myReturn = [NSURLConnection sendSynchronousRequest:myRequest returningResponse:&response error:&error];

- (NSData *)createFormData:(NSDictionary *)myDictionary withBoundary:(NSString *)myBounds
{NSMutableData *myReturn = [[NSMutableData alloc] initWithCapacity:10];NSArray *formKeys = [dict allKeys];for (int i = 0; i < [formKeys count]; i++){[myReturn appendData:[[NSString stringWithFormat:@"--%@\n", myBounds] dataUsingEncoding:NSASCIIStringEncoding]];[myReturn appendData:[[NSString stringWithFormat:@"Content-Disposition:form-data; name=\"%@\"\n\n%@\n", [formKeys objectAtIndex:i],[myDictionary valueForKey:[formKeys objectAtIndex:i]]] dataUsingEncoding:NSASCIIStringEncoding]];}[myReturn appendData:[[NSString stringWithFormat:@"--%@--\n", myBounds] dataUsingEncoding:NSASCIIStringEncoding]];return myReturn;
}

NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:myURL];
NSString *content = [NSString stringWithFormat:@"multipart/form-data; boundary=%@", myBounds];
[request setValue:content forHTTPHeaderField:@"Content-type"];
[request setHTTPMethod:@"POST"];
[request setHTTPBody:myReturn];

//用户按下连接按钮后查找对等点
- (void)viewDidLoad{[super viewDidLoad];chatPicker = [[GKPeerPickerController alloc] init];[chatPicker setDelegate:self];[chatPicker setConnectionTypeMask:GKPeerPickerConnectionTypeNearby];//GKPeerPickerConnectionTypeOnline:在线搜索对等点peers = [[NSMutableArray alloc] init];
}- (IBAction)connect{[chatPicker show];
}

- (void) peerPickerController:(GKPeerPickerController *)picker didSelectConnectionType:(GKPeerPickerConnectionType)type{
}
- (void) peerPickerControllerDidCancel:(GKPeerPickerController *)picker {NSLog(@"the connection was cancelled")
}
- (void) peerPickerController:(GKPeerPickerController *)picker didConnectPeer:(NSString*)peerID toSession:(GKSession*)session
{self.chatSession = session;self.chatSession.delegate = self;[self.chatSession setDataReceiveHandler:self withContext:nil];[chatPicker dismiss];//隐藏选取器
}
- (GKSession *)peerPickerController:(GKPeerPickerController *)picker sessionForConnectionType:(GKPeerPickerConnectionType)type
{GKSession *session = [[GKSession alloc] initWithSessionID:@"chatSession" displayName:@"peer" sessionMode:GKSessionModePeer];[session autorelease];return session;
}

- (void)session:(GKSession *)session peer:(NSString *)peerID didChangeState:(GKPeerConnectionState)state
{switch(state){case GKPeerStateConnected:[peers addObject:peerID];[chatTextArea setText:[NSString stringWithFormat:@"%@has joined the chat.\n",[session displayName]]];break;case GKPeerStateDisconnected:[peers removeObject:peerID];NSString *text = [chatTextArea text];[chatTextArea setText:[NSString stringWithFormat:@"%@\n%@ has left the chat.\n", text, [session displayName]]];break;}
}

- (IBAction)send:(id)sender
{NSData *data = [[sendTextField text] dataUsingEncoding:NSACIIStringEncoding];//GKSendDataReliable告诉会话继续发送数据，直到对等点接收到数据为止。该功能通过TCP/IP协议实现。GKSendDataUnreliable使用UDP协议，它将通知会话，你不介意数据是否被接收或按什么顺序接收，速度快
    [chatSession sendData:data toPeers:peers withDataMode:GKSendDataReliable error:nil];NSString *text = [chatTextArea text];[chatTextArea setText:[NSString stringWithFormat:@"%@Me:%@\n",text,[sendTextField text]]];[sendTextField setText:@""];[sendTextField resignFirstResponder];
}
- (void)receiveData:(NSData*)data fromPeer:(NSString*)peer inSession:(GKSession*)session context:(void*)context
{NSString *string = [[NSString alloc] initWithData:data encoding:NSASCIIStringEncoding];NSString *text = [chatTextArea text];[chatTextArea setText:[NSString stringWithFormat:@"%@%@:%@\n",text,[session displayName], string]];
}

{"aps":{"alert":"This is a message", "badge":11, "sound":"default"}
}

{"aps":{"alert":"This is a message", "badge":11, "sound":"default"},"foo":{"bar":1,"baz":"Custom text"}
}

//在此方法中添加一行代码，告诉应用程序注册推送通知
- (void)applicationDidFinishLaunching:(UIApplication *)app
{[[UIApplication sharedApplication] registerForRemoteNotificationTypes:(UIRemoteNotificationTypeAlert | UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeSound)];
}
//还必须实现一些委托方法来响应注册调用生成的事件：
//第一个方法是通过成功注册推送通知来激活的。注册接收推送通知时，你的应用程序将与苹果公司进行通信，并接收一个唯一的设备标记。设备将使用该标记实现所有的推送通知
- (void)application:(UIApplication *)app didRegisterForRemoteNotificationsWithDeviceToken:(NSData*)devToken
{[self sendProviderDeviceToken:devToken;//此方法是自己创建的，功能是把设备标记发送给推送提供程序。通过web服务交互实现该操作
}
//用于错误处理。当注册推送通知出现错误时，将激活该方法。如果调用该方法，说明你的签名证书也许无效，或者设备没有互联网连接
- (void)application:(UIApplication*)app didFailToRegisterForRemoteNotificationsWithError:(NSError *)err{NSLog(@"Error in registration. Error: %@", err);
}

- (void)applicationDidFinishLaunching:(UIApplication *)application{application.applicationIconBadgeNumber = 0;//最重要的是这里，将标记数重置为0.否则，标记数总是保持推送通知发送时的数值
    [self getUpdatedDataFromServer];
}

<?php$message = "Text to send";$badgeCount = 1;$sound = "default";$payload['aps'] = array('alert' => $message, 'badge' = >$badgeCount, 'sound' => $default);$payload = json_encode($payload);$deviceToken = 'c902XXX556dc5581f2750XXX97ea8c496XXXa613fafXXX50cb356749XXX07cf1';//建立连接$apnsHost = 'gateway.sandbox.push.apple.com';//调试模式$apnsPort = 2195;$apnsCert = 'apns-dev.pem';//将即将被发送地包转换成苹果公司所需的二进制形式$streamContext = stream_context_create();stream_context_set_option($streamContext, 'ssl', 'lcoal_cert', $apnsCert);$apns = stream_socket_client('ssl://' . $apnsHost . ':' . $apnsPort, $error, $errorString, 2, STREAM_CLIENT_CONNECT, $streamContext);//将数据转换成苹果公司所需格式$apnsMessage = chr(0) . chr(0) . chr(32) . pack('H*', str_replace(' ', '', $deviceToken)) . chr(0) . chr(strlen($payload)) . $payload;$fwrite($apns, $apnsMessage);fclose($apns);
?>

- (IBAction)apple:(id)sender{CLLocationCoordinate2D coords;coords.latitude = 37.33188;coords.longitude = -122.029497;MKCoordinateSpan span = MKCoordinateSpanMake(0.002389, 0.005681);MKCoordinateRegion region = MKCoordinateRegionMake(coords, span);[theMap setRegion:region animated:YES];
}

//按下该按钮时启动地理编码器,使用翻译地理编码器在地图中央放置一个大头针
- (IBAction)dropPin:(id)sender{MKReverseGeoCoder *geoCoder = [[MKReverseGeoCoder alloc] initWithCoordinate:theMap.centerCoordinate];[getCoder setDelegate:self];[geoCoder start];
}
//向地图中添加地标
- (void)reverseGeocoder:(MKReverseGeocoder *)geocoder didFindPlacemark:(MKPlacemark *)placemark{[mapView addAnimation:placemark];
}
//处理错误
- (void)reverseGeocoder:(MKReverseGeocoder *)geocoder didFailWithError:(NSError *)error{UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Error" message:@"Unable to get address" delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil];[alert show];[alert release];
}
//告诉地图如何显示标识
- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id<MKAnnotation>)annotation{MKPinAnnotationView *aView = [[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:@"location"];aView.animatesDrop = YES;return aView;
}

//MyAnnotation.h#import <MapKit/MapKit.h>typedef enum AnnotationType{Apple,Google
} AnnotationType;//该类实现了MKAnnotation协议。要满足MKAnnotation的要求，必须具有一个名为coordinate的只读属性。这是该标注在地图上的坐标位置，并将用于决定在哪显示它
@interface MyAnnotation : NSObject<MKAnnotation> {CLLocationCoordinate2D coordinate;NSString *title;NSString *subtitle;AnnotationType annotationType;
}@property (nonatomic, readonly) CLLocationCoordinate2D coordinate;
@property (nonatomic, retain) NSString *title;
@property (nonatomic, retain) NSString *subtitle;
@property (nonatomic) AnnotationType annotationType;- (id)initWithCoords:(CLLocationCoordinate2D)coords andType:(AnnotationType)type;
@end

//MKAnnotation.m@implementation MyAnnotation@synthesize title;
@synthesize subtitle;
@synthesize annotationType;//注意不要合成coordinate属性。因为它是只读的，只能在初始化对象时进行设置- (id)initWithCoords:(CLLocationCoordinate2D)coords andType:(AnnotationType)type {if (self = [super init]){coordinate = coords;self.annotationType = type;}return self;
}

//MyMKAnnotationView.h#import <MapKit/MapKit.h>
#import "MyAnnotation.h"@interface MyAnnotationView : MKAnnotationView{}
- (id) initWithAnnotation:(id)annotation reuseIdentifier:(NSString *)reuseIdentifier;
@end

#import "MyAnnotationView.h"
@implementation MyAnnotationView- (id)initWithAnnotation:(id)annotation reuseIdentifier:(NSString *)reuseIdentifier{MyAnnotation *myAnnotation = (MyAnnotation *)annotation;if ([myAnnotation annotationType] == Apple) {self = [super initWithAnnotation:myAnnotation reuseIdentifier:resuseIdentifier];self.image = [UIImage imageNamed:@"sign-apple.png";} else if ([myAnnotation annotationType == Google]) {self = [super initWithAnnotation:myAnnotation reuseIdentifier:resuseIdentifier;self.image = [UIImage imageNamed:@"sign-google.png";}return self;
}    

- (void)viewDidLoad {[super viewDidLoad];//将地图居中显示在兴趣点上
    CLLocationCoordinate2D coords;coords.latitude = 37.331689;coords.longitude = -122.030731;MKCoordinateSpan span = MKCoordinateSpanMake(0.011209,0.22597);MKCoordinateRegion region = MKCoordinateRegionMake(coords, span);[theMap setRegion:region animated:YES];//得到标注的坐标
    CLLocationCoordinate2D appleCoords;appleCoords.latitude = 37.331689;appleCoords.longitude = -122.030731;MyAnnotation *apple = [[MyAnnotation alloc] initWithCoords:appleCoords andType:Apple];[apple setTitle:@"Apple Inc."];[apple setSubTitle:@"Cupertino, CA"];[theMap addAnnotation:apple];[apple release];CLLocationCoordinate2D googleCoords;googleCoords.latitude = 37.421793;googleCoords.longitude = -122.084434;MyAnnotation *google = [[MyAnnotation alloc] initWithCoords:googleCoords andType:Apple];[google setTitle:@"Apple Inc."];[google setSubTitle:@"Cupertino, CA"];[theMap addAnnotation:google];[google release];
}

- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id<MKAnnotation>)annotation {MyAnnotation *aView = [[MyAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:@"location"];[aView setEnabled:YES];[aView setCanShowCallout:YES];return aView;
}

//RootViewController.h
#import <StoreKit/StoreKit.h>@interface RootViewController : UITableViewController<SKProductsRequestDelegate, SKPaymentTransactionObserver> {NSMutableArray *products;//产品数组NSMutableArray * transactionHistory;
}
@property (nonatomic, retain) NSMutableArray * transactionHistory;
- (void) requestProductData;
- (void) completeTransaction:(SKPaymentTransaction *)transaction;
- (void)restoreTransaction:(SKPaymentTransaction *)transaction;
- (void)failedTransaction:(SKPaymentTransaction *)transaction;
- (void)recordTransaction:(SKPaymentTransaction *)transaction;
- (void)provideContent:(NSString *)productIdentifier;

//RootViewController.m
#import "RootViewController.h"
#improt "WallpaperViewController.h"@implementation RootViewController@synthesize transactionHistory;- (void)viewDidLoad{[super viewDidLoad];//将支付观察器设为本类。这意味着该类要实现SKPaymentTransactionObserver协议以及委托方法。针对该协议必须实现的方法有completeTransaction、restoreTransaction和failedTransaction
    [[SKPaymentQueue defaultQueue] addTransactionObserver:self;//初始化产品数组products = [[NSMutableArray alloc] init];//构建交易历史文件的路径NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);NSString *documentsDirectory = [paths objectAtIndex:0];NSString *path = [documentsDirectory stringByAppendingPathComponent:@"history.plist"];//初始化交易历史self.transactionHistory = [NSMutableArray arrayWithContentsOfFile:path];if (!transactionHistory) {NSMutableArray *_transactionHistory = [[NSMutableArray alloc] init];self.transactionHistory = _transactionHistory;}[self requestProductData];
}

//首先创建产品请求。这些都是前面注册的产品ID
//创建请求之后，就开始从iTunes中获取产品信息。
//获取信息之后，使用该数据调用委托方法didReceiveResponse。对这些产品循环操作并将其添加到全局产品数组。这样就可以使用它们的名称和说明来填充UITableView
- (void)requestProductData{SKProductsRequest *request = [[SKProductsRequest alloc] initWithProductIdentifier:[NSSet setWithObjects:@"com.rightsprite.wallpaper.01","com.rightsprite.wallpaper.02","com.rightsprite.wallpaper.03",nil]];request.delegate = self;[request start];
}
- (void)productsRequest:(SKProductsRequest *)request didReceiveResponse:(SKProductsResponse *)response
{NSArray * myProducts = response.products;for (SKProduct *product in myProducts) {[products addObject:product];}  [request autorelease];[self.tableView reloadData];
}

//UITableView的委托方法
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{return [products count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath*)indexPath{static NSString *CellIdentifier = @"Cell";UITableViewCell *cell = [tableView dequeueReuseableCellWithIdentifier:CellIdentifier];if (cell = nil){cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier] autorelease];}SKProduct *product = [products objectAtIndex:indexPath.row];cell.textLabel.text = [NSString stringWithFormat:@"$%.2f %@", product.price.doubleValue, product.localizeTitle];cell.detailTextLabel.text = product.localizedDescription;cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;return cell;
}

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {SKProduct *product = [products objectAtIndex:indexPath.row];WallpaperViewController *wpViewController = [[WallpaperViewController alloc] initWithNibName:@"WallpaperViewController" bundle:[NSBundle mainBundle]];wpViewController.product = product;[self.navigationController pushViewController:wpViewController animated:YES];[wpViewController release];
}

//WallpaperViewController.h
#import <UIKit/UIKit.h>
#import <StoreKit/StoreKit.h>@interface WallpaperViewController : UIViewController {IBOutlet UIImageView *imageView;SKProduct *product;
}
@property (nonatomic, retain)IBOutlet UIImageView *imageView;
@property (nonatomic, retain)SKProduct *product;- (IBAction)buttonClicked:(id)sender;
@end//WallpaperViewController.m
#import "WallpaperViewController.h"
@implementation WallpaperViewController@synthesize product,imageView;- (void)viewDidLoad{[super viewDidLoad];imageView.image = [UIImage imageNamed:[NSString stringWithFormat:@"%@.jpeg", self.product.productIdentifier]];
}- (IBAction)buttonClicked:(id)sender{SKPayment *payment = [SKPayment paymentWithProductIdentifier:self.product.productIdentifier];[[SKPaymentQueue defaultQueue] addPayment:payment];
}

- (void)paymentQueue:(SKPaymentQueue *)queue updatedTransactions:(NSArray*)transactions {for (SKPaymentTransaction *transaction in transactions) {    swith (transaction.transactionState){case SKPaymentTransactionStatePurchased:[self completeTransaction:transaction];break;case SKPaymentTransactionStateFailed:[self failedTransaction:transaction];break;case SKPaymentTransactionStateRestored:[self restoreTransaction:transaction];default:break;}}
}

//完成交易并交付内容
- (void)completeTransaction:(SKPaymentTransaction*)transaction
{[self.navigationController popViewControllerAnimated:YES];[self recordTransaction:transaction];[self provideContent:transaction.payment.productIdentifier];[[SKPaymentQueue defaultQueue] finishTransaction:transaction];
}
//恢复交易.完成交易和恢复交易通常是相似的。
- (void)restoreTransaction:(SKPaymentTransaction*)transaction
{[self completeTransaction:transaction];
}
//通知用户交易失败
- (void) failedTransaction:(SKPaymentTransaction*)transaction
{if (transaction.error.code != SKErrorPaymentCancelled){UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Error in purchase" message:transaction.error.description delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil];[alert show];[alert release];}[[SKPaymentQueue defaultQueue] finishTransaction:transaction];
}

- (void)recordTransaction:(SKPaymentTransaction *)transaction {if ([self.transactionHistory containsObject:transaction.payment.productIdentifier])return;//将历史记录保存到磁盘NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);NSString *documentsDirectory = [paths objectAtIndex:0];NSString *path = [documentsDirectory stringByAppendingPathComponent:@"history.plist"];[self.transactionHistory addObject:transaction.payment.productIdentifier];[self.transactionHistory writeToFile:path atomically:YES];
}
//将图像保存到用户的相册
- (void)provideContent:(NSString *)productIdentifier {UIImageWriteToSavedPhotosAlbum([UIImage imageNamed:[NSString stringWithFormat:@"%@.jpeg", productIdentifier]], self, @selector(image:didFinishSavingWithError:contextInfo:), nil];
}
//通知用户
- (void)image:(UIImage *)image didFinishSavingWithError:(NSError *)error contextInfo:(void *)contextInfo{UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Purchase Complete" message:@"The wallpaper has been saved to your camera roll." delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil];[alert show];[alert release];
}

- (UIView *)inputAccessoryView {CGRect accessFrame = CGRectMake(0,0,768,44);UIToolbar *toolbar = [[[UIToolbar alloc] initWithFrame:accessFrame autorelease];UIBarButtonItem *buttonSmile = [[[UIBarButtonItem alloc] initWithTitle:@":)" style:UIBarButtonItemStyleBordered target:self action:@selector(sendSmile:)] autorelease];UIBarButtonItem *buttonSad = [[[UIBarButtonItem alloc] initWithTitle:@":(" style:UIBarButtonItemStyleBordered target:self action:@selector(sendSmile:)] autorelease];[toolbar setItems:[NSArray arrayWithObjects:buttonSmile, buttonSad, nil]];return toolbar;
}

- (UIView *)inputView {CGRect accessFrame = CGRectMake(0,0,768,44);UIToolbar *toolbar = [[[UIToolbar alloc] initWithFrame:accessFrame] autorelease];UIBarButtonItem *buttonSmile.........//跟上面的代码一样
}