[英]Google maps android get place
當我單擊按鈕時,我想啟動google maps,然后用戶將選擇地點,我將獲得用戶選擇的用戶地址名稱,經度和緯度。
我在這里和谷歌上搜索了很多,卻沒有找到答案。
我想要這樣的東西:
Button getLocation= (Button) footer.findViewById(R.id.getLocation);
getLocation.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
//start google maps and let the user choose a place, then return to this
//activity and get the latitude and longitude and the name of place
//that was chosen
}
});
這是我使用的地圖片段:
<fragment
android:id="@+id/map"
class="com.google.android.gms.maps.MapFragment"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_marginRight="150dp" />
coords[]
是全局double
數組變量。
基本上,想法是在活動內的地圖片段中顯示地圖。
我為標記設置了一個偵聽器,因此當用戶移動標記時,它將由handler
觸發並處理。
如果您按照本教程進行設置,則R.id.map
是片段布局。
public class Activity extends FragmentActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.setContentView(R.layout.activity_layout);
.......
//Set up map view
map = ((SupportMapFragment)getSupportFragmentManager().findFragmentById(R.id.map)).getMap();
mHandler = new LocationHandler(this);
.......
OnMarkerDragListener markerDragListener = new OnMarkerDragListener() {
@Override
public void onMarkerDragStart(Marker marker) {
// Called when the marker drag is started
}
@Override
public void onMarkerDragEnd(Marker marker) {
// Called when the marker is dropped down.
coords[0] = marker.getPosition().latitude;
coords[1] = marker.getPosition().longitude;
RestoreUIwithSavedLocation(coords);
Log.d(TAG, "Pin Dropped at: " + coords[0] + ", " + coords[1]);
}
@Override
public void onMarkerDrag(Marker marker) {
}
};
map.setOnMarkerDragListener(markerDragListener);
}
}
private void RestoreUIwithSavedLocation(double[] coordsArray) {
Message.obtain(mHandler, LOAD_COORD, coordsArray).sendToTarget();
}
// Write a inner class
static class LocationHandler extends Handler {
WeakReference<Activity> mActivity;
public LocationHandler(Activity activity) {
mActivity = new WeakReference<Activity>(activity);
}
public void handleMessage(Message msg) {
Activity contextActivity = mActivity.get();
switch ((int)msg.what) {
case LOAD_COORD:
map.clear();
double[] coordArray = (double[])msg.obj;
Marker marker = map.addMarker(new MarkerOptions().position(new LatLng(coordArray[0], coordArray[1])));
map.moveCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(coordArray[0], coordArray[1]), 18));
map.animateCamera(CameraUpdateFactory.zoomTo(18), 2000, null);
marker.setDraggable(true);
String s = Double.toString(coordArray[0]) + ", " + Double.toString(coordArray[1]);
contextActivity.text_location.setText(s);
break;
}
}
}
}
有關Google Map API的更多參數,您可以參考以下內容: Google Maps Android API v2-GoogleMap.OnMarkerDragListener
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