如何知道最近的iBeacon [英] How to know the closest iBeacon
本文介绍了如何知道最近的iBeacon的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我有一个代码可以知道哪个信标最接近，但是当信标的准确度为-1.00000时，我有一个问题，该应用程序采用第二个。
I have a code to know which beacon is the closest, but I have a problem when a beacon's accuracy is -1.00000, the the app takes the second one.
因此，有一个布鲁克寻求最近的灯塔寻找其他人，并将最接近的灯塔与周围的其他灯塔进行比较。然后，当我知道哪个是最接近的那个时，我向用户显示它的视图，但是当其他信标靠近ipad时，视图关闭并且显示视图。
So there is a bucle that seek for the closest beacon looking for others and comparing the one closest with the others found around. Then when I know which is the closest one I show it's view to the user, but when other beacon is closer to the ipad the view is close and the view is shown.
我在iPad上使用iOS 7.1和7.0.4，首先是iPad3，第二个是iPad Mini Retina。
I'm using iOS 7.1 and 7.0.4 on 2 iPads, first is iPad3 and the second one is an iPad Mini Retina.
这里有代码：
- (void)locationManager:(CLLocationManager *)manager didStartMonitoringForRegion:(CLRegion *)region {
[self.locationManager startRangingBeaconsInRegion:self.beaconRegion];
}
- (void)initRegion {
NSUUID *uuid = [[NSUUID alloc] initWithUUIDString:@"00000000-0000-0000-0000-000000000002"];
self.beaconRegion = [[CLBeaconRegion alloc] initWithProximityUUID:uuid identifier:@"com.devfright.myRegion"];
[self.locationManager startMonitoringForRegion:self.beaconRegion];
}
- (void)locationManager:(CLLocationManager *)manager didEnterRegion:(CLRegion *)region {
NSLog(@"Beacon Found");
[self.locationManager startRangingBeaconsInRegion:self.beaconRegion];
}
-(void)locationManager:(CLLocationManager *)manager didExitRegion:(CLRegion *)region {
NSLog(@"Left Region");
[self.locationManager stopRangingBeaconsInRegion:self.beaconRegion];
}
-(void)locationManager:(CLLocationManager *)manager didRangeBeacons:(NSArray *)beacons inRegion:(CLBeaconRegion *)region {
CLBeacon *beacon = [[CLBeacon alloc] init];
CLBeacon *closestBeacon = [[CLBeacon alloc] init];
closestBeacon = [beacons lastObject];
//Search for the closest and show the view
for (int i=0; i<beacons.count; i++) {
beacon = beacons[i];
if (beacon.accuracy < closestBeacon.accuracy && beacon.accuracy != -1.000000 && beacon.minor != closestBeacon.minor && beacon.proximity != CLProximityFar) {
closestBeacon = beacons[i];
//NSString *closeAccuracy = closestBeacon.minor.stringValue;
}
NSLog(@"\nActualBeacon:%@\nAccuracy:%f", beacon.minor.stringValue,beacon.accuracy);
NSLog(@"\nCloserBeacon: %@\nAccuracy:%f", closestBeacon.minor.stringValue, closestBeacon.accuracy);
}
NSLog(@"\nClosestBeacon: %@", closestBeacon.minor.stringValue);
if (viewShown == NO) {
if ([closestBeacon.minor.stringValue isEqual: @"1"]) {
actualSection = 1;
[self immediateDetection];
}else if ([closestBeacon.minor.stringValue isEqual: @"2"]){
actualSection = 2;
[self immediateDetection];
}else if ([closestBeacon.minor.stringValue isEqual: @"3"]){
actualSection = 3;
[self immediateDetection];
}else if ([closestBeacon.minor.stringValue isEqual: @"4"]){
actualSection = 4;
[self immediateDetection];
}else if ([closestBeacon.minor.stringValue isEqual: @"5"]){
actualSection = 5;
[self immediateDetection];
}else if ([closestBeacon.minor.stringValue isEqual: @"6"]){
actualSection = 6;
[self immediateDetection];
NSLog(@"6");
}else if ([closestBeacon.minor.stringValue isEqual: @"7"]){
actualSection = 7;
[self immediateDetection];
NSLog(@"7");
}else if ([closestBeacon.minor.stringValue isEqual: @"8"]){
actualSection = 8;
[self immediateDetection];
NSLog(@"8");
}else if ([closestBeacon.minor.stringValue isEqual: @"9"]){
actualSection = 9;
[self immediateDetection];
NSLog(@"9");
}else if ([closestBeacon.minor.stringValue isEqual: @"10"]){
actualSection = 10;
[self immediateDetection];
NSLog(@"10");
}else if ([closestBeacon.minor.stringValue isEqual: @"11"]){
actualSection = 11;
[self immediateDetection];
NSLog(@"11");
}else if ([closestBeacon.minor.stringValue isEqual: @"30"]){
actualSection = 30;
[self immediateDetection];
}
} else if (viewShown == YES) {
if (closestBeacon.minor.integerValue != actualSection) {
//Alarm: Beacon 11
// if (closestBeacon.minor.integerValue != 11 || closestBeacon.minor.integerValue != 10) {
[self dismissViewControllerAnimated:NO completion:nil];
//actualSection = 0;
viewShown = NO;
// }
}
}
}
- (void)immediateDetection
{
viewShown = YES;
if (self.presentedViewController)
{
return;
}
if (actualSection == 1) {
SectionViewController *sectionView = [[SectionViewController alloc] init];
sectionView.section = 1;
[self presentViewController:sectionView animated:NO completion:nil];
sectionView.lbl_name.text = self.lbl_name.text;
}else if (actualSection == 2){
SectionViewController *sectionView = [[SectionViewController alloc] init];
sectionView.section = 2;
[self presentViewController:sectionView animated:NO completion:nil];
sectionView.lbl_name.text = self.lbl_name.text;
}else if (actualSection == 3){
SectionViewController *sectionView = [[SectionViewController alloc] init];
sectionView.section = 3;
[self presentViewController:sectionView animated:NO completion:nil];
sectionView.lbl_name.text = self.lbl_name.text;
}else if (actualSection == 4){
SectionViewController *sectionView = [[SectionViewController alloc] init];
sectionView.section = 4;
[self presentViewController:sectionView animated:NO completion:nil];
sectionView.lbl_name.text = self.lbl_name.text;
}else if (actualSection == 5){
SectionViewController *sectionView = [[SectionViewController alloc] init];
sectionView.section = 5;
[self presentViewController:sectionView animated:NO completion:nil];
sectionView.lbl_name.text = self.lbl_name.text;
}else if (actualSection == 6){
SectionViewController *sectionView = [[SectionViewController alloc] init];
sectionView.section = 6;
[self presentViewController:sectionView animated:NO completion:nil];
sectionView.lbl_name.text = self.lbl_name.text;
}else if (actualSection == 7){
SectionViewController *sectionView = [[SectionViewController alloc] init];
sectionView.section = 7;
[self presentViewController:sectionView animated:NO completion:nil];
sectionView.lbl_name.text = self.lbl_name.text;
}else if (actualSection == 8){
SectionViewController *sectionView = [[SectionViewController alloc] init];
sectionView.section = 8;
[self presentViewController:sectionView animated:NO completion:nil];
sectionView.lbl_name.text = self.lbl_name.text;
}else if (actualSection == 9){
SectionViewController *sectionView = [[SectionViewController alloc] init];
sectionView.section = 9;
[self presentViewController:sectionView animated:NO completion:nil];
sectionView.lbl_name.text = self.lbl_name.text;
}else if (actualSection == 10){
ThiefAlarmViewController *thiefAlarmView = [[ThiefAlarmViewController alloc] init];
[self presentViewController:thiefAlarmView animated:NO completion:nil];
}else if (actualSection == 11){
ThiefAlarmViewController *thiefAlarmView = [[ThiefAlarmViewController alloc] init];
[self presentViewController:thiefAlarmView animated:NO completion:nil];
}else if (actualSection == 30){
SectionViewController *sectionView = [[SectionViewController alloc] init];
sectionView.section = 30;
[self presentViewController:sectionView animated:NO completion:nil];
sectionView.lbl_name.text = self.lbl_name.text;
}
}
当我知道最近的iBeacon时，我会显示它的视图，但是当它的准确度是-1.00000并且与其他人比较时，应用程序取第二个因为第一个具有准确度= -1.00000。
When I know the closest iBeacon I show it's view, but when it's accuracy is -1.00000 and compare to others the app takes the second one cause the first has it's accuracy = -1.00000 .
希望任何人都可以帮助我因为我不喜欢不知道该怎么做，也许这是一个iBeacon问题，但我认为这个问题有一个解决方案。
Hope anyone can help me cause I don't know what to do, maybe this is an iBeacon problem, but I think there is a solution for this issue.
谢谢。
推荐答案
首先：
替换你的长 else / if locationManager：didRangeBeacons：inRegion： with：
if (([closestBeacon.minor intValue] > 0 && [closestBeacon.minor intValue] <= 11) || [closestBeacon.minor intValue] == 30)
{
actualSection = [closestBeacon.minor intValue];
[self immediateDetection];
}
替换长 else / if in immediateDetection with：
Replace your long else/if in immediateDetection with:
if ((actualSection > 0 && actualSection < 10 || actualSection == 30)
{
SectionViewController *sectionView = [[SectionViewController alloc] init];
sectionView.section = actualSection;
[self presentViewController:sectionView animated:NO completion:nil];
sectionView.lbl_name.text = self.lbl_name.text;
}
else if (actualSection == 10 || actualSection == 11)
{
ThiefAlarmViewController *thiefAlarmView = [[ThiefAlarmViewController alloc] init];
[self presentViewController:thiefAlarmView animated:NO completion:nil];
}
else
{
}
这应该可以为您节省大量代码。
That should save you a lot of code.
对于您的问题，您可以这样：
For your issue, you could to this:
NSPredicate *predicateIrrelevantBeacons = [NSPredicate predicateWithFormat:@"(self.accuracy != -1) AND ((self.proximity != %d) OR (self.proximity != %d))", CLProximityFar,CLProximityUnknown];
NSArray *relevantsBeacons = [beacons filteredArrayUsingPredicate: predicateIrrelevantBeacons];
NSPredicate *predicateMin = [NSPredicate predicateWithFormat:@"self.accuracy == %@.@min.accuracy", relevantsBeacons];
CLBeacon *closestBeacon = nil;
NSArray *closestArray = [[relevantsBeacons filteredArrayUsingPredicate:predicateMin];
if ([closestArray count] > 0)
closestBeacon = [closestArray objectAtIndex:0];
if (closestBeacon)
{ //Do your thing }
else
{//No relevant close beacon}
这篇关于如何知道最近的iBeacon的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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