在我的项目中，我将这些信息填充到地图中
for (int i = 0; i<arrayResults.count; i++){
object = [arrayResults objectAtIndex:i];
if ([[object iden]intValue] == 1) {
type = @"type_one";
CLLocationCoordinate2D annotationCoord = CLLocationCoordinate2DMake([[[object coord]objectForKey:@"latitude"] floatValue], [[[object coord]objectForKey:@"longitude"] floatValue]);
MKPointAnnotation *annotationPoint = [[MKPointAnnotation alloc] init];
annotationPoint.coordinate = annotationCoord;
annotationPoint.title = [NSString stringWithFormat:@"%@",[object nome_obj]];
annotationPoint.subtitle = [NSString stringWithFormat:@"%@",[object address]];
[map addAnnotation:annotationPoint];
}
else if ([[object iden]intValue] == 2) {
type = @"type_two";
CLLocationCoordinate2D annotationCoord = CLLocationCoordinate2DMake([[[object coord]objectForKey:@"latitude"] floatValue], [[[object coord]objectForKey:@"longitude"] floatValue]);
MKPointAnnotation *annotationPoint = [[MKPointAnnotation alloc] init];
annotationPoint.coordinate = annotationCoord;
annotationPoint.title = [NSString stringWithFormat:@"%@",[object nome_obj]];
annotationPoint.subtitle = [NSString stringWithFormat:@"%@",[object address]];
[map addAnnotation:annotationPoint];
}
else if ([[object iden]intValue] == 3) {
type = @"type_three";
CLLocationCoordinate2D annotationCoord = CLLocationCoordinate2DMake([[[object coord]objectForKey:@"latitude"] floatValue], [[[object coord]objectForKey:@"longitude"] floatValue]);
MKPointAnnotation *annotationPoint = [[MKPointAnnotation alloc] init];
annotationPoint.coordinate = annotationCoord;
annotationPoint.title = [NSString stringWithFormat:@"%@",[object nome_obj]];
annotationPoint.subtitle = [NSString stringWithFormat:@"%@",[object address]];
[map addAnnotation:annotationPoint];
}
else if ([[object iden]intValue] == 4) {
type = @"type_four";
CLLocationCoordinate2D annotationCoord = CLLocationCoordinate2DMake([[[object coord]objectForKey:@"latitude"] floatValue], [[[object coord]objectForKey:@"longitude"] floatValue]);
MKPointAnnotation *annotationPoint = [[MKPointAnnotation alloc] init];
annotationPoint.coordinate = annotationCoord;
annotationPoint.title = [NSString stringWithFormat:@"%@",[object nome_obj]];
annotationPoint.subtitle = [NSString stringWithFormat:@"%@",[object address]];
[map addAnnotation:annotationPoint];
}
这是我在地图上添加的四种对象
当我进入这种方法时
- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id <MKAnnotation>)annotation {
MKAnnotationView *view = nil;
if (annotation != mapView.userLocation) {
if ([[[arrayResults objectAtIndex:countPoint]iden]intValue] == 1){
view = [mapView dequeueReusableAnnotationViewWithIdentifier:@"type_one"];
if (!view) {
view = [[MKAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:@"type_one"];
view.canShowCallout = YES;
UIButton* aButton = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
[aButton addTarget:self action:@selector(open:) forControlEvents:UIControlEventTouchUpInside];
[aButton setTag:countPoint+100];
view.rightCalloutAccessoryView = aButton;
view.image = [UIImage imageNamed:@"type_one.png"];
}
}
else if ([[[arrayResults objectAtIndex:countPoint]iden]intValue] == 2){
view = [mapView dequeueReusableAnnotationViewWithIdentifier:@"type_two"];
if (!view) {
view = [[MKAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:@"type_two"];
view.canShowCallout = YES;
UIButton* aButton = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
[aButton addTarget:self action:@selector(open:) forControlEvents:UIControlEventTouchUpInside];
[aButton setTag:countPoint+100];
view.rightCalloutAccessoryView = aButton;
view.image = [UIImage imageNamed:@"type_two.png"];
}
}
else if ([[[arrayResults objectAtIndex:countPoint]iden]intValue] == 3){
view = [mapView dequeueReusableAnnotationViewWithIdentifier:@"type_three"];
if (!view) {
view = [[MKAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:@"type_three"];
view.canShowCallout = YES;
UIButton* aButton = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
[aButton addTarget:self action:@selector(open:) forControlEvents:UIControlEventTouchUpInside];
[aButton setTag:countPoint+100];
view.rightCalloutAccessoryView = aButton;
view.image = [UIImage imageNamed:@"type_three.png"];
}
}
else if ([[[arrayResults objectAtIndex:countPoint]iden]intValue] == 4){
view = [mapView dequeueReusableAnnotationViewWithIdentifier:@"type_four"];
if (!view) {
view = [[MKAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:@"type_four"];
view.canShowCallout = YES;
UIButton* aButton = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
[aButton addTarget:self action:@selector(openScheda:) forControlEvents:UIControlEventTouchUpInside];
[aButton setTag:countPoint+100];
view.rightCalloutAccessoryView = aButton;
view.image = [UIImage imageNamed:@"type_four.png"];
}
}
countPoint++;
}
问题是标记的类型与数组元素不对应...但是我不明白。
也就是说，如果标记的图像为“ type_one”，则在弹出窗口中显示为“ type_four”的“ title” ...不对应
最佳答案
您的注释需要“知道”它的类型，以便您可以在viewForAnnotation中创建正确的视图。为此，可以对MKPointAnnotation进行子类化，然后向其添加NSInteger值以存储数组索引。
请参见MKPointAnnotation add extra property，但是您将添加一个称为index的NSInteger属性。
创建注释时，请设置以下属性：
for (int i = 0; i<arrayResults.count; i++)
{
object = [arrayResults objectAtIndex:i];
CLLocationCoordinate2D annotationCoord = CLLocationCoordinate2DMake([[[object coord]objectForKey:@"latitude"] floatValue], [[[object coord]objectForKey:@"longitude"] floatValue]);
// MKMyPointAnnotation is your MKPointAnnotation subclass
MKMyPointAnnotation *annotationPoint = [[MKMyPointAnnotation alloc] init];
annotationPoint.coordinate = annotationCoord;
annotationPoint.title = [NSString stringWithFormat:@"%@",[object nome_obj]];
annotationPoint.subtitle = [NSString stringWithFormat:@"%@",[object address]];
annotationPoint.index = i; // store the index
[map addAnnotation:annotationPoint];
}
然后在您的viewForAnnotation中，将注释转换为您的子类，然后取消引用类型：
- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id <MKAnnotation>)annotation {
{
MKMyPointAnnotation *myAnnotation = (MKMyPointAnnotation *)annotation;
object = [arrayResults objectAtIndex:myAnnotation.index]; // <-- your index property
switch ([[object iden] intValue])
{
case 1: // type one
.
.
.
}
.
.
.
}
关于ios - map 中的随机MKPointAnnotation，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/20858866/