在mapview註釋中添加了揭密按鈕

我知道它在很多次之前就被問過了，但我似乎無法得到它。我繪製了我的地圖，添加了註釋，並且我想將註釋按鈕添加到註釋中。在mapview註釋中添加了揭密按鈕

我從我的viewDidLoad方法陣列通過從文本文件

NSURL *dataUrl = [NSURL URLWithString:@"http://nne.ezadspro.co.uk/cms/testmap.txt"]; 

NSString *fileString = [NSString stringWithContentsOfURL:dataUrl 
               encoding:NSUTF8StringEncoding 
                error:nil]; 
int count = 0; 
NSScanner *scanner = [NSScanner scannerWithString:fileString]; 

eventPoints = [[NSMutableArray array] retain]; 
Locations *event; 
NSString *line; 
NSArray *values; 
while ([scanner isAtEnd] == NO) { 
    [scanner scanUpToString:@"\n" intoString:&line]; 
    //skip the first line 
    if(count > 0) { 
     values = [line componentsSeparatedByString:@","]; 
     event = [[[Locations alloc] init] autorelease]; 
     event.latitude = [[values objectAtIndex:5] floatValue]; 
     event.longitude = [[values objectAtIndex:6] floatValue]; 
     //event.companyID = [[values objectAtIndex:0]intValue]; 
     event.title = [values objectAtIndex:1]; 
     event.subtitle = [values objectAtIndex:2]; 
     //event.magnitude = [[values objectAtIndex:4] floatValue]; 
     //event.depth = [[values objectAtIndex:5] floatValue]; 
     [eventPoints addObject:event]; 
    } 
    count++; 
    if(count == 300) { 
     //limit number of events to 300 
     break; 
    } 
} 
//UIButton *infoButton = [UIButton buttonWithType:UIButtonTypeDetailDisclosure]; 

[mapView addAnnotations: eventPoints];

這工作得很好拉動添加註釋，但就像我說我要添加的按鈕，現在我已經看到了（MKAnnotationView *）mapView：（MKMapView *）mapView viewForAnnotation：（id）註解{

但是無論我用這種方法做什麼似乎都不起作用，有人可以幫助我嗎？我怎麼得到它的工作（它是怎麼叫？）我不知道

我是相當新的這個所以要簡單，如果你能和虐待儘量不要問太多的問題:)

來源

2010-10-15 richard Stephenson