我有一个包含几家出租车公司的列表视图。当用户点击出租车名称时,它会显示一个警告对话框,要求他们预订,显示地图或取消。我想要实现的是当用户点击show map时,它从已经设置的字符串数组中获取位置,然后在地图上指向它。我不想让它找到我现在的位置。这可能吗?我已经有了mapview设置,目前只是指向教程中随机设置的位置。
这是我的代码:
ListTaxi Class :
class Taxi {
private String taxiName;
private String taxiAddress;
private String taxiDist;
public String getName() {
return taxiName;
}
public void setName(String name) {
taxiName = name;
}
public String getAddress() {
return taxiAddress;
}
public void setAddress(String address) {
taxiAddress = address;
}
public String getDist() {
return taxiDist;
}
public void setDist(String dist){
taxiDist = dist;
}
public Taxi(String name, String address, String dist) {
taxiName = name;
taxiAddress = address;
taxiDist = dist;
}
}
public class TaxiAdapter extends ArrayAdapter<Taxi> {
private ArrayList<Taxi> items;
private TaxiViewHolder taxiHolder;
private class TaxiViewHolder {
TextView name;
TextView address;
TextView dist;
}
public TaxiAdapter(Context context, int tvResId, ArrayList<Taxi> items) {
super(context, tvResId, items);
this.items = items;
}
@Override
public View getView(int pos, View convertView, ViewGroup parent) {
View v = convertView;
if (v == null) {
LayoutInflater vi = (LayoutInflater)getSystemService(LAYOUT_INFLATER_SERVICE);
v = vi.inflate(R.layout.taxi_list_item, null);
taxiHolder = new TaxiViewHolder();
taxiHolder.name = (TextView)v.findViewById(R.id.taxi_name);
taxiHolder.address = (TextView)v.findViewById(R.id.taxi_address);
taxiHolder.dist = (TextView)v.findViewById(R.id.taxi_dist);
v.setTag(taxiHolder);
} else taxiHolder = (TaxiViewHolder)v.getTag();
Taxi taxi = items.get(pos);
if (taxi != null) {
taxiHolder.name.setText(taxi.getName());
taxiHolder.address.setText(taxi.getAddress());
taxiHolder.dist.setText(taxi.getDist());
}
return v;
}
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.listtaxi);
final String[] taxiNames = getResources().getStringArray(R.array.taxi_name_array);
final String[] taxiAddresses = getResources().getStringArray(R.array.taxi_address_array);
final String[] taxiDist = getResources().getStringArray(R.array.taxi_array_dist);
ArrayList<Taxi> taxiList = new ArrayList<Taxi>();
for (int i = 0; i < taxiNames.length; i++) {
taxiList.add(new Taxi(taxiNames[i], taxiAddresses[i], taxiDist[i]));
}
setListAdapter(new TaxiAdapter(this, R.layout.taxi_list_item, taxiList));
final ListView lv = getListView();
lv.setTextFilterEnabled(true);
lv.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> a, View v, final int position, long id)
{
final int selectedPosition = position;
AlertDialog.Builder adb=new AlertDialog.Builder(ListTaxi.this);
adb.setTitle("Taxi Booking");
adb.setMessage("You Have Selected: "+taxiNames[selectedPosition]);
adb.setPositiveButton("Book", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
Intent intent = new Intent(ListTaxi.this, Booking.class);
intent.putExtra("booking", taxiNames[selectedPosition]);
intent.putExtra("address", taxiAddresses[selectedPosition]);
intent.putExtra("distance", taxiDist[selectedPosition]);
startActivity(intent);
}
});
adb.setNeutralButton("Show Map", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
Intent intent = new Intent(ListTaxi.this, Map.class);
startActivity(intent);
}
});
adb.setNegativeButton("Cancel", null);
adb.show();
}
});
}
}
我的地图类是: / ** * * / 包com.taxime;
public class Map extends MapActivity{
LinearLayout linearLayout;
MapView mapView;
List<Overlay> mapOverlays;
Drawable drawable;
ItemizedOverlay itemizedOverlay;
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.mapviews);
mapView = (MapView) findViewById(R.id.mapView);
mapView.setBuiltInZoomControls(true);
mapOverlays = mapView.getOverlays();
drawable = this.getResources().getDrawable(R.drawable.androidmarker);
itemizedOverlay = new ItemizedOverlay(drawable);
Intent intent = getIntent();
if (intent != null) {
if (Intent.ACTION_VIEW.equals(intent.getAction())) {
if (intent.getData() != null) {
int selectedPosition = Integer.parseInt(intent.getData().getHost());
GeoPoint point = new GeoPoint(selectedPosition, selectedPosition);
OverlayItem overlayitem = new OverlayItem(point, "", "");
itemizedOverlay.addOverlay(overlayitem);
mapOverlays.add(itemizedOverlay);
//...
}
}
}
我的字符串也来自:
<string-array name="taxi_name_array">
<item>Barrys Taxi</item>
<item>Boom Taxi</item>
</string-array>
<string-array name="taxi_address_array">
<item>24 test address, Uxbridge, UB8 2JY</item>
<item>14 test 2 address, Uxbridge, UB91JD</item>
</string-array>
<string-array name = "taxi_array_dist">
<item>0.4 miles</item>
<item>0.8 miles</item>
</string-array>
<string-array name ="location">
<item>(19240000,-99120000)</item>
</string-array>
如果有人有任何想法会很棒。
再次感谢大家
答案 0 :(得分:1)
你可以做的是使用意图的数据字段来传递被点击到地图活动的出租车项目的位置。为此,在“Map”按钮的onClick
处理程序中,使用带有四个参数的Intent
构造函数:
adb.setNeutralButton("Show Map", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse("taxi:" + selectedPosition), ListTaxi.this, Map.class);
startActivity(intent);
}
});
然后,在地图活动中,您调用getIntent
方法来检索启动它的Intent
。在intent上调用getData
将检索数据字段。
总而言之,您将在地图活动的onCreate
覆盖中获得以下内容:
Intent intent = getIntent();
if (intent != null) {
if (Intent.ACTION_VIEW.equals(intent.getAction())) {
if (intent.getData() != null) {
int selectedPosition = Integer.parseInt(intent.getData().getHost());
String[] taxiLocations = getResources().getStringArray(R.array.location);
String location = taxiLocations[selectedPosition];
//...
}
}
}
答案 1 :(得分:0)
你的意思是你有一个地址,需要lat / lon来设置地图?也许是这样的事情:
Geocoder gc = new Geocoder(this.getApplicationContext()) ;
List<Address> addresses = null ;
try {
addresses = gc.getFromLocationName("123 Main St, Peoria IL 61601", 10) ;
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Address a = addresses.get(0) ;
double lat = a.getLatitude() ;
double lon = a.getLongitude() ;
MapController mc = mapView.getController();
p = new GeoPoint(
(int) (lat * 1E6),
(int) (lon * 1E6));
mc.animateTo(p);
mc.setZoom(18);
mapView.invalidate();