如果希望利用iPhone的3DTouch功能，对地图上的标注点进行信息预览、快捷操作，利用该示例说明可以实现。
核心类/接口
类 | 接口 | 说明 | 版本 |
|---|---|---|---|
AMapSearchAPI | - (void)AMapPOIAroundSearch:(AMapPOIAroundSearchRequest *)request; | POI 周边查询接口 | V4.0.0版本起 |
1.检查是否支持3D Touch功能
- (void)check3DTouch
{
// register for 3D Touch (if available)
if (self.traitCollection.forceTouchCapability == UIForceTouchCapabilityAvailable)
{
[self registerForPreviewingWithDelegate:(id)self sourceView:self.view];
NSLog(@"3D Touch is available! Hurra!");
}
else
{
NSLog(@"3D Touch is not available on this device. Sniff!");
}
}
2.实现3D Touch delegate
- (UIViewController *)previewingContext:(id<UIViewControllerPreviewing>)previewingContext viewControllerForLocation:(CGPoint)location
{
__block BOOL touchOnAnnotation = NO;
__block AMapPOI *poi = nil;
[self.annotationArray enumerateObjectsUsingBlock:^(id _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) {
if ([obj isKindOfClass:[MAPinAnnotationView class]])
{
MAPinAnnotationView *view = (MAPinAnnotationView *)obj;
CGPoint point = [view convertPoint:location fromView:self.mapView];
if (CGRectContainsPoint(view.bounds, point))
{
touchOnAnnotation = YES;
if ([view.annotation isKindOfClass:[POIAnnotation class]])
{
POIAnnotation *annotion = (POIAnnotation *)view.annotation;
poi = annotion.poi;
}
*stop = YES;
}
}
}];
if (!touchOnAnnotation)
{
return nil;
}
// check if we're not already displaying a preview controller
if ([self.presentedViewController isKindOfClass:[POIPreviewViewController class]])
{
return nil;
}
// shallow press: return the preview controller here (peek)
self.selectedPoi = poi;
POIPreviewViewController *previewController = [[POIPreviewViewController alloc] initWithUserPoint:self.userLocation.coordinate selectedPOI:self.selectedPoi];
previewController.delegate = self;
previewController.preferredContentSize = CGSizeMake(0, 400);
return previewController;
}
- (void)previewingContext:(id<UIViewControllerPreviewing>)previewingContext commitViewController:(UIViewController *)viewControllerToCommit
{
// deep press: bring up the commit view controller (pop)
UIViewController *commitController = [[POIPreviewViewController alloc] initWithUserPoint:self.userLocation.coordinate selectedPOI:self.selectedPoi];
[self showViewController:commitController sender:self];
}
//是否支持3D Touch，如果支持，注册一下
func check3DTouch() {
if #available(iOS 9.0, *) {
if self.traitCollection.forceTouchCapability == UIForceTouchCapability.available {
self.registerForPreviewing(with: self, sourceView: self.view)
print("3D Touch is available! Hurra!");
}
} else {
print("3D Touch is not available on this device. Sniff!");
}
}
//3DTouch刚触发的时候弹出的模态视图
func previewingContext(_ previewingContext: UIViewControllerPreviewing, viewControllerForLocation location: CGPoint) -> UIViewController? {
var touchOnAnnotation = false
var selectPoi: AMapPOI?
//找到点击的哪个点
for (_, poiAnnotationView) in self.poiAnnotationViews.enumerated() {
if poiAnnotationView.frame.contains(location) {
touchOnAnnotation = true;
let poiAnno: POIAnnotation = poiAnnotationView.annotation as! POIAnnotation
selectPoi = poiAnno.poi
break;
}
}
//没有点击在任何一个Annotation的范围内
if touchOnAnnotation == false {
return nil
}
// check if we're not already displaying a preview controller
if self.presentedViewController != nil {
return nil
}
self.selectedPOI = selectPoi
let poiDetailVC = self.createPOIDetailVC()
poiDetailVC.isFrom3DTouchPresent = true
poiDetailVC.preferredContentSize = CGSize.init(width: 0, height: 400)
return poiDetailVC
}
//模态视图弹出后，继续按住屏幕不放，就会调用下面这句话，进入VC
func previewingContext(_ previewingContext: UIViewControllerPreviewing, commit viewControllerToCommit: UIViewController) {
let poiDetailVC = self.createPOIDetailVC()
self.show(poiDetailVC, sender: self)
}
//Preview Actions
@available(iOS 9.0, *)
lazy var previewActions: [UIPreviewActionItem] = {
func previewActionForTitle(_ title: String, index: NSInteger, style: UIPreviewActionStyle = .default) -> UIPreviewAction {
return UIPreviewAction(title: title, style: style) { previewAction, viewController in
self.showRoute(index:index)
}
}
let action1 = previewActionForTitle("步行",index:1)
let action2 = previewActionForTitle("公交",index:2)
let action3 = previewActionForTitle("驾车",index:3)
return [action1, action2, action3]
}()
@available(iOS 9.0, *)
override var previewActionItems: [UIPreviewActionItem] {
return previewActions
}
