Question

您好我最初能够获得一些关于此类设置的指导，但是发生了错误。当我尝试将LatLng放入每个对象的创建时，它在逗号下显示为红色。谁能告诉我为什么？我是否错过了一个括号或什么，或者在将LatLng输入到对象的创建中时如何格式化LatLng？

public class Cinema {

    private GoogleMap googleMap;
    private HashMap cinemaMarker;

    String name;
    String webSite;
    LatLng position;

    public Cinema(String name, String webSite, LatLng position){
        this.name = name;
        this.webSite = webSite;
        this.position = position;
    }

public String getName(){
        return name;
    }

    public String getWebSite(){
        return webSite;
    }

    public LatLng getPosition(){
        return position;
    }

    public MarkerOptions getMarker(){
        return new MarkerOptions().position(position).title(name);
    }

    List<Cinema> cinemas = new ArrayList<>();

    public void MockData(){
        cinemas.add(new Cinema("ODEON","www.odeon.co.uk/films/", (54.598693,-5.925955));
        cinemas.add(new Cinema("Movie House -Dublin Rd","www.moviehouse.co.uk/Movie/Cinema/1/dublin_road", (54.592211, -5.931512));
        cinemas.add(new Cinema("Queen's Film Theatre","queensfilmtheatre.com/Whats-On", (54.585406, -5.933929));
        cinemas.add(new Cinema("Strand Cinema","www.cinemas-online.co.uk/films-out-now/", (54.600542, -5.879803 ));
        cinemas.add(new Cinema("Odyssey Cinema","www.odysseycinemas.co.uk/en.aspx", (54.603835, -5.916253));
        cinemas.add(new Cinema("Omniplex Kennedy Centre","www.omniplex.ie/", (54.580723, -5.979174));
        cinemas.add(new Cinema("Movie House - City Side","www.moviehouse.co.uk/Movie/Cinema/2/city_side", (54.608512, -5.926765));

    }

Answer 1

更改MockData中的所有行，以便调用LatLng contructor：

cinemas.add(new Cinema("ODEON","www.odeon.co.uk/films/", new LatLng(54.598693,-5.925955))

公共构造函数摘要

LatLng(double latitude, double longitude)

Answer 2

在Java中使用构造函数：）

cinemas.add(new Cinema("ODEON","www.odeon.co.uk/films/", new LatLng(54.598693,-5.925955));

Answer 3

您的方法Cinema的参数列表是 -

字符串名称2.字符串webSite 3. LatLng位置

因此，当您实例化时，必须将这些内容传递给方法。你过世了 cinemas.add(new Cinema("ODEON","www.odeon.co.uk/films/", (54.598693,-5.925955));

第一个参数"ODEON"是字符串（正确）
第二个参数"www.odeon.co.uk/films/"是字符串（正确）
第三个参数(54.598693,-5.925955)不是latlng（不正确）

所以你必须在第三个参数中传递一个latlng并执行此传递

new LatLng(54.598693,-5.925955)。

希望这个答案能让你明白自己的错误。

在android studio中使用LatLng的问题

3 个答案: