openInMapsでマップを起動してルート検索後、元のアプリに戻ると"タッチしてナビに戻る"表示が出て、アプリの画面が下にズレる。

元アプリの"検索" ボタンを押して、openInMapsでマップアプリを起動してルート検索後、"出発"ボタンを押し、左上の元のアプリに戻るボタン"<"を押して元のアプリに戻ると、画面の上部に"タッチしてナビに戻る"という表示がされて画面が下にズレる。
元アプリの画面上部に表示される"タッチしてナビに戻る"という表示をしないようにしたいです。
長いソースで申し訳ありませんが、よろしくお願いいたします。

swift4
1import UIKit
2import MapKit
3import CoreLocation
4
5
6class ViewController: UIViewController, MKMapViewDelegate, CLLocationManagerDelegate, UIPickerViewDelegate, UIPickerViewDataSource {
7    
8    var myMapView : MKMapView!
9    var myLocationManager : CLLocationManager!
10    var userLocation : CLLocationCoordinate2D!
11    var cmlkLocation : CLLocationCoordinate2D!
12
13    var cmlkPickerView : UIPickerView!
14    let pickerViewHeight : CGFloat = 160
15    
16    var pickerToolBar : UIToolbar!
17    let toolBarHeight : CGFloat = 40.0
18
19    var cmlkValues :  NSArray = ["下から選んでください。","県庁前　事業所","呉服町 事業所"]
20    var cmlkRow : Int = 0
21    var cmlkAddress : String = ""
22
23    var cmlkPin : MKPointAnnotation!
24    
25    var selectButton : UIButton!
26    var searchButton : UIButton!
27
28    // 縮尺.
29    var zoomInit : Bool = true
30    let ZOOM_INIT_LAT : Double = 0.0177655284856755
31    let ZOOM_INIT_LON : Double = 0.0160932555655791
32    var myCoordingRegion : MKCoordinateRegion!
33    var mySpan : MKCoordinateSpan!
34    
35    override func viewDidLoad() {
36        super.viewDidLoad()
37        // Do any additional setup after loading the view, typically from a nib.
38        
39        let devMaxWidth  : CGFloat = self.view.bounds.width
40        let devMaxHeight : CGFloat = self.view.bounds.height
41        
42        myMapView = MKMapView()
43        myLocationManager = CLLocationManager()
44        userLocation = CLLocationCoordinate2D()
45        cmlkLocation = CLLocationCoordinate2D()
46        selectButton = UIButton()
47        searchButton = UIButton()
48        
49        // UIPickerViewを生成.
50        cmlkPickerView = UIPickerView()
51        pickerToolBar = UIToolbar()
52        cmlkPin = MKPointAnnotation()
53
54        selectButton.frame   = CGRect(x: 0.0, y: 20.0, width: devMaxWidth, height: 40.0)
55        pickerToolBar.frame  = CGRect(x: 0.0, y: 60.0, width: devMaxWidth, height: toolBarHeight)
56        cmlkPickerView.frame = CGRect(x: 0.0, y: 60.0 + toolBarHeight, width: devMaxWidth, height: pickerViewHeight)
57        myMapView.frame      = CGRect(x: 0.0, y: 60.0, width: devMaxWidth, height: devMaxHeight - 60.0)
58        searchButton.frame   = CGRect(x: devMaxWidth / 5.0 * 4.0, y: devMaxHeight - 40.0, width: devMaxWidth / 5.0, height: 40.0)
59        
60        
61        myMapView.delegate = self
62        myLocationManager.delegate = self
63        // Delegateを設定する.
64        cmlkPickerView.delegate = self
65        // DataSourceを設定する.
66        cmlkPickerView.dataSource = self
67        // ToolBarを設定する.  2018.06.26.add
68        pickerToolBar.backgroundColor = UIColor.cyan
69        pickerToolBar.isHidden = true
70        let flexible = UIBarButtonItem(barButtonSystemItem: .flexibleSpace, target: self, action: nil)
71        let doneBtn = UIBarButtonItem(title: "完了", style: .plain, target: self, action: #selector(self.onClickButton))
72        pickerToolBar.items = [flexible,doneBtn]
73
74        
75        // 位置情報取得の許可状況を確認
76        let status = CLLocationManager.authorizationStatus()
77
78        if(status == CLAuthorizationStatus.notDetermined) {
79            print("didChangeAuthorizationStatus:(status)");
80            self.myLocationManager.requestAlwaysAuthorization()
81        }
82
83        myLocationManager.desiredAccuracy = kCLLocationAccuracyBest
84        myLocationManager.distanceFilter = 300
85        myLocationManager.startUpdatingLocation()
86        
87        myMapView.setCenter(self.myMapView.userLocation.coordinate, animated: true)
88        myMapView.userTrackingMode = MKUserTrackingMode.none
89        myMapView.showsUserLocation = true
90        
91        selectButton.backgroundColor = UIColor.yellow
92        selectButton.setTitle("事業所を選択", for: .normal)
93        selectButton.setTitleColor(UIColor.black, for: .normal)
94        selectButton.addTarget(self, action: #selector(self.onClickButton), for: .touchUpInside)
95        
96        searchButton.backgroundColor = UIColor.green
97        searchButton.setTitle("検索", for: .normal)
98        searchButton.setTitleColor(UIColor.black, for: .normal)
99        searchButton.addTarget(self, action: #selector(self.onSearch), for: .touchUpInside)
100        
101        cmlkPickerView.backgroundColor = UIColor.cyan
102        cmlkPickerView.layer.shadowOpacity = 0.5
103        cmlkPickerView.isHidden = true
104
105        // Viewに追加する.
106        self.view.addSubview(myMapView)
107        self.view.addSubview(selectButton)
108        self.view.addSubview(pickerToolBar)
109        self.view.addSubview(cmlkPickerView)
110        self.view.addSubview(searchButton)
111        
112    }
113
114    func numberOfComponents(in pickerView: UIPickerView) -> Int {
115        return 1
116    }
117    
118    // pickerに表示する行数を返すデータソースメソッド. (実装必須)
119    func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
120        return cmlkValues.count
121    }
122    
123    // pickerに表示する値を返すデリゲートメソッド.
124    func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
125        return cmlkValues[row] as? String
126    }
127    
128    // pickerが選択された際に呼ばれるデリゲートメソッド.
129    func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
130        cmlkRow = row
131        if cmlkRow == 0 {
132            selectButton.setTitle("事業所を選択", for: .normal)
133        } else if cmlkRow == 1 {
134            cmlkAddress = "福岡市博多区千代4-1-33"
135            cmlkLocation.latitude  =  33.602905
136            cmlkLocation.longitude = 130.414481
137            selectButton.setTitle("(cmlkValues[cmlkRow])", for: .normal)
138        } else if cmlkRow == 2 {
139            cmlkAddress = "福岡市博多区上呉服町11-16"
140            cmlkLocation.latitude  =  33.598882
141            cmlkLocation.longitude = 130.410745
142            selectButton.setTitle("(cmlkValues[cmlkRow])", for: .normal)
143        } else {
144            cmlkAddress = ""
145        }
146    }
147    
148    @objc  func onClickButton() {
149        if cmlkPickerView.isHidden == true {
150            cmlkPickerView.isHidden = false
151            pickerToolBar.isHidden  = false
152            // セット済みのピンを削除
153            self.myMapView.removeAnnotations(self.myMapView.annotations)
154        } else {
155            cmlkPickerView.isHidden = true
156            pickerToolBar.isHidden  = true
157            if cmlkRow != 0 {
158                // セット済みのピンを削除
159                self.myMapView.removeAnnotations(self.myMapView.annotations)
160  
161                pinStand()
162                
163            }
164        }
165    }
166    
167    @objc func onSearch(){
168        // Pickerを隠す
169        cmlkPickerView.isHidden = true
170        pickerToolBar.isHidden = true
171        // 選択されていない時は、終了する。
172        if cmlkRow == 0 { return }
173
174        pinStand()
175
176        let myPlacemark = MKPlacemark(coordinate: (self.cmlkPin?.coordinate)!)
177        let myMapItem = MKMapItem(placemark: myPlacemark)
178        myMapItem.name = self.cmlkValues[self.cmlkRow] as? String
179        let myLaunchOptions = [MKLaunchOptionsDirectionsModeKey: MKLaunchOptionsDirectionsModeTransit, MKLaunchOptionsMapTypeKey: MKMapType.standard.rawValue] as [String: Any]
180        myMapItem.openInMaps(launchOptions: myLaunchOptions)
181    }
182    
183    func pinStand(){
184        //地図にピンを立てる。
185        self.cmlkPin.title = self.cmlkValues[self.cmlkRow] as? String
186        self.cmlkPin.subtitle = self.cmlkAddress
187        self.cmlkPin.coordinate = CLLocationCoordinate2D(latitude: cmlkLocation.latitude, longitude: cmlkLocation.longitude)
188        self.myMapView.addAnnotation(self.cmlkPin)
189    }
190    
191    // 位置情報取得に成功したときに呼び出されるデリゲート.
192    func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]){
193        userLocation = CLLocationCoordinate2DMake((manager.location?.coordinate.latitude)!, (manager.location?.coordinate.longitude)!)
194
195        if zoomInit == true {
196            myMapView.centerCoordinate = CLLocationCoordinate2DMake( userLocation.latitude, userLocation.longitude)
197        
198            var centerLocation = CLLocationCoordinate2D()
199            centerLocation.latitude  = self.myMapView.region.center.latitude
200            centerLocation.longitude = self.myMapView.region.center.longitude
201        
202            self.myCoordingRegion = self.myMapView.region
203            self.myCoordingRegion.center = centerLocation
204        
205            mySpan = MKCoordinateSpan(latitudeDelta: ZOOM_INIT_LAT, longitudeDelta: ZOOM_INIT_LON)
206            let myRegion : MKCoordinateRegion = MKCoordinateRegion(center: myMapView.centerCoordinate, span: mySpan)
207            myMapView.region = myRegion
208
209            myMapView.setRegion(myRegion, animated: true)
210            zoomInit = false
211        }
212    }
213    
214    // 位置情報取得に失敗した時に呼び出されるデリゲート.
215    func locationManager(_ manager: CLLocationManager,didFailWithError error: Error){
216        print("locationManager error")
217    }
218    
219    // Regionが変更された時に呼び出されるメソッド.
220    func mapView(_ mapView: MKMapView, regionDidChangeAnimated animated: Bool) {
221    }
222    
223    override func didReceiveMemoryWarning() {
224        super.didReceiveMemoryWarning()
225        // Dispose of any resources that can be recreated.
226    }
227}
228