ios开发5

让一个UIImageView响应点击事件  

UIImageView  *imgView =[[ UIImageView   alloc ]  initWithFrame : CGRectMake ( 0 ,  0 , 320 ,  44 )];
imgView. userInteractionEnabled = YES ;
UITapGestureRecognizer  *singleTap =[[ UITapGestureRecognizer  alloc ] initWithTarget : self action : @selector ( onClickImage )];
[imgView  addGestureRecognizer :singleTap];
[singleTap  release ];
-( void )onClickImage{
   // here, do whatever you wantto do
NSLog ( @"imageview is clicked!" );

}

iphone调用系统电话、浏览器、地图、邮件等


openURL的使用方法：
view plaincopy toclipboardprint?
       [[UIApplication sharedApplication] openURL:[NSURL URLWithString:appString]];  
其中系统的appString有：
view plaincopy toclipboardprint?
1.Map    http://maps.google.com/maps?q=Shanghai  
2.Email  mailto://myname@google.com  
3.Tel    tel://10086  
4.Msg    sms://10086  
openURL能帮助你运行Maps，SMS，Browser,Phone甚至其他的应用程序。这是Iphone开发中我经常需要用到的一段代码，它仅仅只有一行而已。
- (IBAction)openMaps {
    //打开地图 
   NSString*addressText = @"beijing";
    //@"1Infinite Loop, Cupertino, CA 95014"; 
   addressText =[addressTextstringByAddingPercentEscapesUsingEncoding:NSASCIIStringEncoding]; 
   NSString*urlText = [NSStringstringWithFormat:@"http://maps.google.com/maps?q=%@",addressText]; 
   NSLog(@"urlText=============== %@", urlText);
   [[UIApplicationsharedApplication] openURL:[NSURL URLWithString:urlText]];
}

- (IBAction)openEmail {
     //打开mail // Fire off an email to apple support
      [[UIApplication sharedApplication]openURL:[NSURL   URLWithString:@"mailto://devprograms@apple.com"]];
 } 
 
- (IBAction)openPhone {
  
    //拨打电话
    // CallGoogle 411
    [[UIApplication sharedApplication] openURL:[NSURLURLWithString:@"tel://8004664411"]];
 } 
 
- (IBAction)openSms {
    //打开短信
     // Text toGoogle SMS
    [[UIApplication sharedApplication] openURL:[NSURLURLWithString:@"sms://466453"]];
}

-(IBAction)openBrowser {
    //打开浏览器
    // Lanuch any iPhone developers fav site
     [[UIApplication sharedApplication] openURL:[NSURLURLWithString:@"http://itunesconnect.apple.com"]];
 }

iphone程序内调用谷歌地图

使用CLLocationManager类，MKMapView。并且实现<MKMapViewDelegate,CLLocationManagerDelegate>
//初始化CLLocationManager，CLLocationManager获得当前地理坐标
locmanager=[[CLLocationManager alloc]init];

[locmanager setDelegate:self];
 //设置精确度
[locmanager setDesiredAccuracy:kCLLocationAccuracyBest];

[locmanagerstartUpdatingLocation];
执行完以后，会自动调用代理方法:

在代理方法：


- (void)locationManager:(CLLocationManager *)managerdidUpdateToLocation:(CLLocation*)newLocation fromLocation:(CLLocation *)oldLocation{
//初始化矩形大小
 CGRect rect=CGRectMake(0,0,320,460);
//设置地图大小为矩形大小
map=[[MKMapView alloc] initWithFrame:rect];

CLLocationCoordinate2Dloc=[newLocation coordinate];
lat=loc.latitude;
lon=loc.longitude;

//coordinate坐标
CLLocationCoordinate2DtheCoordinate;
CLLocationCoordinate2DtheCenter;

//theCoordinate.latitude=lat;
//theCoordinate.longitude=lon;
theCoordinate=loc;
[map setDelegate:self];
//设置地图显示的类型，有卫星地图，道路，等
[map setMapType:MKMapTypeStandard];
//[mapsetMapType:MKMapTypeSatellite];
//区域坐标Region(区域，地域)

MKCoordinateRegiontheRegin;
//theCenter.latitude=lat;
//theCenter.longitude=lon;
theCenter=loc;
theRegin.center=theCenter;

//坐标间距（span：间隔，间距）
MKCoordinateSpantheSpan;

theSpan.latitudeDelta=0.1;
theSpan.longitudeDelta=0.1;
//设置地图显示的区域，
theRegin.span=theSpan;
//[mapsetRegion:theRegin];
[map regionThatFits:theRegin];
map.showsUserLocation=YES;
[self.viewaddSubview:map];

}


- (MKAnnotationView *)mapView:(MKMapView *)mapViewviewForAnnotation:(id<MKAnnotation>)annotation{
NSLog(@"-------viewForAnnotation-------");
//此类可以显示针一样的图标
MKPinAnnotationView*newAnnotation=[[MKPinAnnotationViewalloc] initWithAnnotation:annotationreuseIdentifier:@"annotation1"];

//newAnnotation.animatesDrop=YES;
//newAnnotation.animatesDrop=NO;

newAnnotation.pinColor=MKPinAnnotationColorPurple;
//显示标志提示
newAnnotation.canShowCallout=YES;
return newAnnotation;
}