更新2：
这是映射中的现有代码,但它就像注释使用引脚完全无序.一次引脚为绿色,下次运行时,相同的引脚为红色.断开来自哪里？
-(void) viewWillAppear:(BOOL)animated {
self.annotationArray = [[NSMutableArray alloc] init];
CLLocationCoordinate2D coord = {.latitude = 15.8700320,.longitude = 100.9925410};
MKCoordinateSpan span = {.latitudeDelta = 3,.longitudeDelta = 3};
MKCoordinateRegion region = {coord,span};
[mapViewUI setRegion:region];
PFQuery *query = [PFQuery queryWithClassName:@"Share"];
[query findObjectsInBackgroundWithBlock:^(NSArray *objects,NSError *error) {
if (!error) {
self.mapViewData = objects;
for (int i=0;i<[objects count];i++)
{
// Question * q = [[Question alloc]init];
PFObject * obj = [self.mapViewData objectAtIndex:i];
NSLog(@"%@",obj);
self.theObject = obj;
NSString *string = obj[@"WhereAt"];
NSArray *stringArray = [string componentsSeparatedByString: @","];
CLLocationDegrees myLatitude = [[stringArray objectAtIndex:0] doubleValue];
CLLocationDegrees myLongitude = [[stringArray objectAtIndex:1] doubleValue];
CLLocationCoordinate2D coord2 = {.latitude = myLatitude,.longitude = myLongitude};
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
dateFormatter.dateFormat = @"MMM dd,yyyy";
MKPointAnnotation *annotation2 = [[MKPointAnnotation alloc] init];
[annotation2 setCoordinate:coord2];
[annotation2 setTitle:obj[@"FamilyName"]];
[annotation2 setSubtitle:obj[@"Result"]];
[mapViewUI addAnnotation:annotation2];
}
} else {
// Log details of the failure
NSLog(@"Error: %@ %@",error,[error userInfo]);
}
}];
}
- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id <MKAnnotation>)annotation {
if (annotation == mapViewUI.userLocation)
{
return nil;
}
else
{
NSUInteger index = [[mapView annotations] indexOfObject:annotation];
PFObject *objectForCurrentAnnotation = [self.mapViewData objectAtIndex:index];
MKPinAnnotationView *annotationView = [[MKPinAnnotationView alloc] init];
annotationView.enabled = YES;
annotationView.canShowCallout = YES;
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
dateFormatter.dateFormat = @"MMM dd,yyyy";
NSString *theResult = objectForCurrentAnnotation[@"Result"];
NSLog(@"Result is %@",theResult);
if ([theResult isEqualToString:@"Accepted Bible"]) {
NSLog(@"Accepted");
annotationView.pinTintColor = [UIColor greenColor];
}
else if ([theResult isEqualToString:@"Requested Different Material"]) {
NSLog(@"Different");
annotationView.pinTintColor = [UIColor blackColor];
}
else if ([theResult isEqualToString:@"Not Home"]) {
NSLog(@"Not Home");
annotationView.pinTintColor = [UIColor yellowColor];
}
else if ([theResult isEqualToString:@"Rejected Bible"]) {
NSLog(@"Rejected");
annotationView.pinTintColor = [UIColor redColor];
}
return annotationView;
}
return nil;
}
更新：
我现在看到问题是self.theObject被设置了一次,所以它只是为那些未被Annotations处理的内容提取数据.我想现在的问题是,我怎样才能让它显示每个对象而不是最后一个对象？
我的应用程序使用Parse.com和PFObjects.应用程序查询PFObject以获取行中每个条目的所有数据,拉出该条目的给定位置的坐标以及各种数据位,并为每个条目添加注释.当我为此设置MKAnnotationView以便我可以在Apple通常让您轻松做的事情之外有多个彩色针脚时,我会遇到问题.图像和注释的一些数据将每个引脚设置为最后一个引脚.标题和副标题很好,但不是颜色或标注图像.这是我的代码,这里出了什么问题？
-(void) viewWillAppear:(BOOL)animated {
CLLocationCoordinate2D coord = {.latitude = 15.8700320,span};
[mapView setRegion:region];
PFQuery *query = [PFQuery queryWithClassName:@"Share"];
[query findObjectsInBackgroundWithBlock:^(NSArray *objects,NSError *error) {
if (!error) {
NSLog(@"YAY");
// The find succeeded. The first 100 objects are available in objects
// questionsList = [[NSMutableArray alloc]init];
NSLog(@"Objects%lu",(unsigned long)[objects count]);
for (int i=0;i<[objects count];i++)
{
// Question * q = [[Question alloc]init];
PFObject * obj = [objects objectAtIndex:i];
self.theObject = obj;
NSString *string = obj[@"WhereAt"];
NSArray *stringArray = [string componentsSeparatedByString: @",yyyy";
NSString *theResult = obj[@"Result"];
NSString *theDate = [dateFormatter stringFromDate:obj[@"DateVisited"]];
NSString *combined = [[theResult stringByAppendingString:@" on "] stringByAppendingString:theDate];
NSString *theTitle = [[obj[@"FamilyName"] stringByAppendingString:@" "] stringByAppendingString:obj[@"StreetAddress"]];
MKPointAnnotation *annotation = [[MKPointAnnotation alloc] init];
[annotation setCoordinate:coord2];
[annotation setTitle:theTitle];
[annotation setSubtitle:combined];
[mapView addAnnotation:annotation];
}
} else {
// Log details of the failure
NSLog(@"Error: %@ %@",[error userInfo]);
}
}];
}
- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id <MKAnnotation>)annotation {
MKPinAnnotationView *annotationView = [[MKPinAnnotationView alloc] init];
annotationView.enabled = YES;
annotationView.canShowCallout = YES;
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
dateFormatter.dateFormat = @"MMM dd,yyyy";
NSString *theResult = self.theObject[@"Result"];
NSLog(@"Result is %@",theResult);
if ([theResult isEqualToString:@"Accepted Bible"]) {
// NSLog(@"Accepted");
annotationView.pinTintColor = [UIColor greenColor];
}
else if ([theResult isEqualToString:@"Requested Different Material"]) {
//NSLog(@"Different");
annotationView.pinTintColor = [UIColor blackColor];
}
else if ([theResult isEqualToString:@"Not Home"]) {
// NSLog(@"Not Home");
annotationView.pinTintColor = [UIColor yellowColor];
}
else if ([theResult isEqualToString:@"Rejected Bible"]) {
//NSLog(@"Rejected");
annotationView.pinTintColor = [UIColor redColor];
}
//annotationView.image = [UIImage imageNamed:@"arrest.png"];//here we use a nice image instead of the default pins
PFFile *thumbnail = self.theObject[@"HousePicture"];
[thumbnail getDataInBackgroundWithBlock:^(NSData *imageData,NSError *error) {
UIImage *thumbnailImage = [UIImage imageWithData:imageData];
self.theImage = thumbnailImage;
//annotationView.image = thumbnailImage;
UIView *leftCAV = [[UIView alloc] initWithFrame:CGRectMake(0,60,60)];
UIImageView *theImageView = [[UIImageView alloc] initWithFrame:CGRectMake(0,60)];
theImageView.image = self.theImage;
annotationView.leftCalloutAccessoryView = leftCAV;
[leftCAV addSubview:theImageView];
annotationView.canShowCallout = YES;
}];
return annotationView;
return nil;
}
解决方法
子类MKPointAnnotation例如MyPointAnnotation添加属性结果
@interface MyPointAnnotation : MKPointAnnotation
@property (nonatomic,strong) NSString *result;
@end
在viewWillAppear中：修改这些行
NSString *theResult = obj[@"Result"]; MyPointAnnotation *myAnnotation = [[MyPointAnnotation alloc] init]; [myAnnotation setCoordinate:coord2]; [myAnnotation setTitle:theTitle]; [myAnnotation setSubtitle:combined]; [myAnnotation setResult:theResult]; [mapView addAnnotation:myAnnotation];
在viewForAnnotation中：delegate方法得到这样的结果
MyPointAnnotation *myAnnotation = (MyPointAnnotation *)annotation; NSString *theResult = myAnnotation.result;
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