地圖註釋數組

Question

我如何在Xcode的mapview中創建註解數組？我試過 NSMutableArray * ann = [NSMutableArray alloc] init];

註釋

CLLocationcoordinate2D thecoordinate; 
thecoordinate.latitude =92.3; 
thecoordinate.longitude = 12.78; 
MyAnnotationClass *ann = [MyAnnotationClass alloc]; 
region.coordinate = thecoordinate; 
[mapview addannotation: ann]; 

我的這些我如何把它們放在一個數組57。

Answer 1

將消息addObject發送到NSMutableArray。

NSMutableArray* annotationArray = [[NSMutableArray alloc] init]; 
[annotationArray addObject:ann]; //ann is an instance of MyAnnotationClass. Call this method for every MyAnnotationClass object you have. 

另一種選擇是初始化與對象數組：

NSMutableArray* annotationArray =[NSMutableArray arrayWithObjects: arr1, arr2, arr3, arr4, nil]; //arr1,arr2... are your MyAnnotationClass objects. 

然後，您可以anotations添加到的MapView一下子：

[mapview addAnnotations:annotationArray];