java - 无法从 ListView 项目中检索 Intent 的地址和电话号码

Question

我是一名初学者 Android 开发人员，正在为我的 Udacity 类(class)开发应用程序。我在 ListView 项中放置了两个按钮 - 一个用于打开 map ，另一个用于调用电话。为了使它们工作，我尝试从列表中的当前对象检索地址和电话号码，但它不起作用，即使 map 和电话应用程序打开，它也只显示我的位置，而不是对象位置和随机电话数量。

这是我的 Adapdter 类中的代码:

public class LocationAdapter extends ArrayAdapter<Location>{
private String address;
//create custom constructor for LocationAdapter
public LocationAdapter (Activity context, ArrayList<Location> locations){
    super (context, 0, locations);
}
//Provide a View (ListView) for adapter
//@param position - the position of the item in the adapter
//@param convertView - the old view to reuse, if available
//@param parent - the parent view this view will be attached to

@Override
public View getView (int position, View convertView, ViewGroup parent){
    View listItemView = convertView;
    if (listItemView==null){
        listItemView = 
LayoutInflater.from(getContext()).inflate(R.layout.list_item, parent, false);
    }
//Get Location object from this position on the list
    final Location currentLocation = getItem(position);

    //Set onClickListener on Map Button and use an Intent in onClick method 
to open location on map

    final ImageButton mapButton = (ImageButton) 
listItemView.findViewById(R.id.map_button);
    mapButton.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            String address 
 =Integer.toString(currentLocation.getLocationAddressString());
            Intent openMap = new Intent(Intent.ACTION_VIEW);
            openMap.setData(Uri.parse("geo:"+ address));
            getContext().startActivity(openMap);

        }
    });
     //Set onClickListener on Call Button and use an Intent in onClick method 
to open a dialer
    final ImageButton callButton = (ImageButton) 
listItemView.findViewById(R.id.call_button);
    callButton.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            String number 
=Integer.toString(currentLocation.getLocationPhoneNumberString());
            Intent makeCall = new Intent (Intent.ACTION_DIAL);
            makeCall.setData(Uri.parse("tel:"+number));
            getContext().startActivity(makeCall);
        }
    });


    //Find ImageView and set an Image of the current Location object
    ImageView locationImage =(ImageView) 
listItemView.findViewById(R.id.image);
    locationImage.setImageResource(currentLocation.getImageResourceId());

    //Find Location Name TextView and set Name of the current Location object
    TextView locationName =(TextView) listItemView.findViewById(R.id.name);
    locationName.setText(currentLocation.getLocationNameString());

    //Find Location Description TextView and set Description of the current 
Location object
    TextView locationDescription = (TextView) 
listItemView.findViewById(R.id.description);
    
locationDescription.setText(currentLocation.getLocationDescriptionString());

    return listItemView;
}
 }

这是位置类代码:

public class Location {
//Image associated with Location
private int mImageResourceId;
//Location name
private int mLocationNameResourceId;
//Location description
private int mLocationDescriptionResourceId;
//Location coordinates
private int mLocationAddressResourceId;
//Location phone number
private int mLocationPhoneNumberResourceId;

//Create a constructor for the Location Object
public Location (int ImageResourceId, int LocationNameResourceId, int 
LocationDescriptionResourceId,
                 int LocationAddressResourceId, int 
LocationPhoneNumberResourceId) {
    mImageResourceId=ImageResourceId;
    mLocationNameResourceId=LocationNameResourceId;
    mLocationDescriptionResourceId=LocationDescriptionResourceId;
    mLocationAddressResourceId=LocationAddressResourceId;
    mLocationPhoneNumberResourceId=LocationPhoneNumberResourceId;
  }
  //Get image resource id
public int getImageResourceId(){
    return mImageResourceId;
  }
//get Location name
public int getLocationNameString(){
    return mLocationNameResourceId;
}
//get Location description
public int getLocationDescriptionString(){
    return mLocationDescriptionResourceId;
}
//get Location address
public int getLocationAddressString(){
    return mLocationAddressResourceId;
}
//get Location phone number
public int getLocationPhoneNumberString(){
    return mLocationPhoneNumberResourceId;
}
}

<小时/>

已解决

因此，问题出在自定义类中将 LocationAddress 存储为 Integer，而不是将其存储为 String。

Answer 1

认为这可能与此行上地址 URI 的创建方式有关:

openMap.setData(Uri.parse("geo:"+ address));

基本上，这将输出一个类似于以下内容的 addressUri:

geo:123 Sesame St

但是看看 https://developers.google.com/maps/documentation/urls/android-intents 中的示例需要进行一些更改:

1) 使用地址时，纬度/经度应设置为 0,0
2) 您实际上必须指定 Uri 的 ?q= 部分

所以我认为如果你将前面提到的行更改为这样，它应该可以工作:

openMap.setData(Uri.parse("geo:0,0?q="+ address));