乙個簡單的MapView例子。氣球墜落

第一步。

首先需要自定義乙個類，這裡叫它poiannotation，採用mkannotation協議。

這個類的物件用來存放小氣球的座標資訊和顯示文字。

**如下：

/* poiannotation.h */

#import #import @inte***ce poiannotation : nsobject
@property (nonatomic,readonly) cllocationcoordinate2d coordinate;
@property (nonatomic,copy) nsstring *subtitle;
@property (nonatomic,copy) nsstring *title;
-(id) initwithcoords:(cllocationcoordinate2d) coords;
@end

/* poiannotation.m */

#import "poiannotation.h"
@implementation poiannotation
@synthesize coordinate = _coordinate;
@synthesize subtitle = _subtitle;
@synthesize title = _title;
- (id) initwithcoords:(cllocationcoordinate2d) coords
return self;
}- (void) dealloc
@end

/* mapviewcontroller.h  */

#import #import "mapkit/mapkit.h"
#import "poiannotation.h"
@inte***ce mapviewcontroller : uiviewcontroller
@property (nonatomic, retain) iboutlet mkmapview *mapbankview;
@end

/* mapviewcontroller.m  */

@implementation mapviewcontroller
@synthesize mapbankview = _mapbankview ;
- (void)viewdidload
//設定小氣球的屬性
-(void)create
//根據annotation生成對應的view
- (mkannotationview *) mapview:(mkmapview *)mapview viewforannotation:(id ) annotation
-(void)btnclicked
- (void)viewdidunload
- (bool)shouldautorotatetointe***ceorientation:(uiinte***ceorientation)inte***ceorientation
@end

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