我想在地图视图中禁用某些引脚。以某种方式设置MKAnnotationView
无法MKAnnotationView
。
此外,我发现VoiceOver会在地图视图中从一个街道到另一个街道进行迭代,这在某些情况下可能没有意义。
那么还有其他方法可以禁用- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id<MKAnnotation>)annotation {
if ([annotation isKindOfClass:[MKUserLocation class]]) return nil;
...//some setup
MKAnnotationView *annotationView = [mapView dequeueReusableAnnotationViewWithIdentifier:annotationIdentifier];
if (!annotationView && ![annotationIdentifier isEqualToString:@""]) {
annotationView = [[MKAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:annotationIdentifier];
}
.../some config
// somehow no effect :(
annotationView.isAccessibilityElement = NO;
return annotationView;
上的辅助功能以及地图中的街道吗?
当前代码
NSString *userJid = [NSString stringWithFormat:@"%@%@",cell.frndName.text,DomainName];
NSString *userJid1= [NSString stringWithFormat:@"%@%@",[[NSUserDefaults standardUserDefaults]valueForKey:@"name"],DomainName];
NSFetchRequest *messagesCoreD = [[NSFetchRequest alloc] init];
NSManagedObjectContext *context=[[self appDelegate].xmppMessageArchivingCoreDataStorage mainThreadManagedObjectContext];
NSEntityDescription *messageEntity = [NSEntityDescription entityForName:@"XMPPMessageArchiving_Contact_CoreDataObject" inManagedObjectContext:context];
[messagesCoreD setEntity:messageEntity];
[messagesCoreD setIncludesPropertyValues:NO]; //only fetch the managedObjectID
NSString *predicateFrmt = @"bareJidStr == %@";
NSString *predicateFrmt1 = @"streamBareJidStr == %@";
NSPredicate *predicateName = [NSPredicate predicateWithFormat:predicateFrmt,userJid];
NSPredicate *predicateSSID = [NSPredicate predicateWithFormat:predicateFrmt1,userJid1];
NSArray *subPredicates = [NSArray arrayWithObjects:predicateName, predicateSSID, nil];
NSPredicate *orPredicate = [NSCompoundPredicate andPredicateWithSubpredicates:subPredicates];
messagesCoreD.predicate = orPredicate;
NSError * error = nil;
NSArray * messages = [context executeFetchRequest:messagesCoreD error:&error];
//error handling goes here
[tableView reloadData];
for (NSManagedObject * message in messages)
{
[context deleteObject:message];
[tableView reloadData];
}
NSEntityDescription *messageEntity1 = [NSEntityDescription entityForName:@"XMPPMessageArchiving_Message_CoreDataObject" inManagedObjectContext:context];
[messagesCoreD setEntity:messageEntity1];
[messagesCoreD setIncludesPropertyValues:NO]; //only fetch the managedObjectID
messagesCoreD.predicate = orPredicate;
NSArray * messages1 = [context executeFetchRequest:messagesCoreD error:&error];
//error handling goes here
[tableView reloadData];
for (NSManagedObject * message in messages1)
{
[context deleteObject:message];
[tableView reloadData];
}
NSError *saveError = nil;
[context save:&saveError];
}