[英]Android google maps add to marker own tag
我有這樣的代碼:
protected void onPostExecute(final ArrayList<HashMap<String, String>> adapter) {
for (final HashMap<String, String> a : adapter) {
LatLng pos = new LatLng(Double.valueOf(a.get(TAG_latitude)), Double.valueOf(a.get(TAG_longitude)));
Log.e("pppppos", String.valueOf(pos.latitude));
Marker m = map.addMarker(new MarkerOptions().position(pos)
.title(a.get(TAG_NAME))
.snippet("Kiel is cool"));
map.setOnInfoWindowClickListener(
new OnInfoWindowClickListener(){
public void onInfoWindowClick(Marker marker){
Intent nextScreen = new Intent(SearchExchangerActivity.this, BankExchangersListActivity.class);
nextScreen.putExtra("exchanger_id", id);
startActivityForResult(nextScreen, 0);
}
});
}
但我需要為每個標記設置不可見的用戶字段,例如Tag_id
,然后在向其他活動發送額外信息時使用此ID,例如:
protected void onPostExecute(final ArrayList<HashMap<String, String>> adapter) {
for (final HashMap<String, String> a : adapter) {
LatLng pos = new LatLng(Double.valueOf(a.get(TAG_latitude)), Double.valueOf(a.get(TAG_longitude)));
Marker m = map.addMarker(new MarkerOptions().position(pos)
.title(a.get(TAG_NAME))
.snippet("Kiel is cool")
.Tag_id(TAG_ID));
map.setOnInfoWindowClickListener(
new OnInfoWindowClickListener(){
public void onInfoWindowClick(Marker marker){
Intent nextScreen = new Intent(SearchExchangerActivity.this, BankExchangersListActivity.class);
nextScreen.putExtra("exchanger_id", marker.get(TAG_ID));
startActivityForResult(nextScreen, 0);
}
});
}
這是真的嗎? 我的聽眾怎樣才能得到我點擊的標記?
它也可以通過標題字段來完成......但是我在編寫marker.getTitle()
時遇到錯誤...
UPD
for (final HashMap<String, String> a : adapter) {
LatLng pos = new LatLng(Double.valueOf(a.get(TAG_latitude)), Double.valueOf(a.get(TAG_longitude)));
Log.e("pppppos", String.valueOf(pos.latitude));
HashMap<Marker, String> m = new HashMap<Marker, String>();
m.put( map.addMarker(new MarkerOptions().position(pos)
.title(a.get(TAG_NAME))
.snippet("Kiel is cool")), "1");
}
map.setOnInfoWindowClickListener(
new OnInfoWindowClickListener(){
public void onInfoWindowClick(HashMap<Marker, String> marker){
Intent nextScreen = new Intent(SearchExchangerActivity.this, BankExchangersListActivity.class);
nextScreen.putExtra("exchanger_id", "1");
startActivityForResult(nextScreen, 0);
}
});
Map<Marker, String>
並將數據保存在那里或 getData
和setData
函數添加到Marker
類。 順便說一句。 您不應該在循環中設置InfoWindowAdapter
。 這沒有道理。 只有最后的幸存者。
目前正式提供, setTag
和getTag
已添加到Marker API中。
以下摘自官方文檔中的“ 關聯數據與標記 ”部分:
/**
* A demo class that stores and retrieves data objects with each marker.
*/
public class MarkerDemoActivity extends FragmentActivity implements
OnMarkerClickListener,
OnMapReadyCallback {
private static final LatLng PERTH = new LatLng(-31.952854, 115.857342);
private static final LatLng SYDNEY = new LatLng(-33.87365, 151.20689);
private static final LatLng BRISBANE = new LatLng(-27.47093, 153.0235);
private Marker mPerth;
private Marker mSydney;
private Marker mBrisbane;
private GoogleMap mMap;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.marker_demo);
SupportMapFragment mapFragment =
(SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map);
mapFragment.getMapAsync(this);
}
/** Called when the map is ready. */
@Override
public void onMapReady(GoogleMap map) {
mMap = map;
// Add some markers to the map, and add a data object to each marker.
mPerth = mMap.addMarker(new MarkerOptions()
.position(PERTH)
.title("Perth");
mPerth.setTag(0);
mSydney = mMap.addMarker(new MarkerOptions()
.position(SYDNEY)
.title("Sydney");
mSydney.setTag(0);
mBrisbane = mMap.addMarker(new MarkerOptions()
.position(BRISBANE)
.title("Brisbane");
mBrisbane.setTag(0);
// Set a listener for marker click.
mMap.setOnMarkerClickListener(this);
}
/** Called when the user clicks a marker. */
@Override
public boolean onMarkerClick(final Marker marker) {
// Retrieve the data from the marker.
Integer clickCount = (Integer) marker.getTag();
// Check if a click count was set, then display the click count.
if (clickCount != null) {
clickCount = clickCount + 1;
marker.setTag(clickCount);
Toast.makeText(this,
marker.getTitle() +
" has been clicked " + clickCount + " times.",
Toast.LENGTH_SHORT).show();
}
// Return false to indicate that we have not consumed the event and that we wish
// for the default behavior to occur (which is for the camera to move such that the
// marker is centered and for the marker's info window to open, if it has one).
return false;
}
}
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