我的项目有问题。 我想删除特定的Google地图标记，例如，当我按下按钮进行删除时。但是我想删除标记，而不是所有标记，我将在我的应用程序中进行选择。我的数据库如下所示：Firebase Database
一切，我需要的是，如果我使标记处于活动状态（可能是在单击它时），那么我将能够从数据库和应用程序的地图中删除该标记。添加标记的代码：
btnPridatKontejner = (Button)findViewById(R.id.btn_pridat_kontejner);
btnPridatKontejner.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
final AlertDialog.Builder dialog = new AlertDialog.Builder(Welcome.this);
dialog.setTitle("Přidat kontejner");
dialog.setMessage("Prosím, zadejte typ kontejneru pro přidání");
LayoutInflater inflater = LayoutInflater.from(Welcome.this);
View info_layout = inflater.inflate(R.layout.layout_info_map, null);
final MaterialEditText edtTypKontejneru = info_layout.findViewById(R.id.edtTypKontejneru);
dialog.setView(info_layout);
dialog.setPositiveButton("Přidat kontejner", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
dialogInterface.dismiss();
final double latitude = mLastLocation.getLatitude();
final double longitude = mLastLocation.getLongitude();
MarkerOptions mp = new MarkerOptions();
long date = System.currentTimeMillis();
SimpleDateFormat sdf = new SimpleDateFormat("dd. MM. yyyy, k:mm");
String dateString = sdf.format(date);
mp.position(new LatLng(latitude, longitude));
mp.title(edtTypKontejneru.getText().toString());
mp.snippet(dateString);
mMap.addMarker(mp);
DatabaseReference markerRef = FirebaseDatabase.getInstance().getReference("markers");
String key = markerRef.push().getKey();
markerRef.child(key).child("long").setValue(longitude);
markerRef.child(key).child("lat").setValue(latitude);
markerRef.child(key).child("title").setValue(mp.getTitle());
markerRef.child(key).child("snippet").setValue(mp.getSnippet());
if (TextUtils.isEmpty(edtTypKontejneru.getText().toString())){
return;
}
}
});
dialog.setNegativeButton("Zavřít", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
dialogInterface.dismiss();
}
});
dialog.show();
}
}
这是我从Firebase加载到我的应用程序的代码：
mMap = googleMap;
//Disable Map Toolbar:
//map.getUiSettings().setMapToolbarEnabled(false);
DatabaseReference rootRef = FirebaseDatabase.getInstance().getReference();
DatabaseReference usersRef = rootRef
.child("markers");
ValueEventListener eventListener = new ValueEventListener() {
@Override
public void onDataChange(DataSnapshot dataSnapshot) {
for(DataSnapshot ds : dataSnapshot.getChildren()) {
String latitude_Display = ds
.child("lat")
.getValue().toString();
String longitude_Display = ds
.child("long")
.getValue().toString();
String title_Display = ds
.child("title")
.getValue().toString();
String info_Display = ds
.child("snippet")
.getValue().toString();
String latLng = latitude_Display;
String latLng1 = longitude_Display;
String title = title_Display;
String info = info_Display;
double latitude = Double.parseDouble(latLng);
double longitude = Double.parseDouble(latLng1);
String titleInfo = title;
String infoInfo = info;
LatLng currentLocation = new LatLng( latitude, longitude );
MarkerOptions markerOptions = new MarkerOptions();
markerOptions.position( currentLocation );
mMap.addMarker(new MarkerOptions()
.position(new LatLng(latitude, longitude))
.title(titleInfo).snippet(infoInfo));
}
}
@Override
public void onCancelled(DatabaseError databaseError) {}
};
usersRef.addListenerForSingleValueEvent(eventListener);
}
是否有可能做出类似的事情？感谢您提供所有答案。
答案 0 :(得分：1)
INFO:root:Missing pipeline option (runner). Executing pipeline using the default runner: DirectRunner.
INFO:beam_extended.io.mongodbio:Raw query: {}
INFO:beam_extended.io.mongodbio:Cleaned query: {}
INFO:beam_extended.io.mongodbio:Starting MongoDB read from mydb.mycollection with query {}
T4: <class 'beam_extended.io.mongodbio._MongoSink'>
INFO:dill:T4: <class 'beam_extended.io.mongodbio._MongoSink'>
# T4
INFO:dill:# T4
D2: <dict object at 0x7fdb82fc9050>
INFO:dill:D2: <dict object at 0x7fdb82fc9050>
T4: <class 'pymongo.mongo_client.MongoClient'>
INFO:dill:T4: <class 'pymongo.mongo_client.MongoClient'>
# T4
INFO:dill:# T4
D2: <dict object at 0x7fdb82fc96e0>
INFO:dill:D2: <dict object at 0x7fdb82fc96e0>
T4: <class 'pymongo.monitoring._EventListeners'>
INFO:dill:T4: <class 'pymongo.monitoring._EventListeners'>
# T4
INFO:dill:# T4
D2: <dict object at 0x7fdb82fd5050>
INFO:dill:D2: <dict object at 0x7fdb82fd5050>
# D2
INFO:dill:# D2
D2: <dict object at 0x7fdb82f605c8>
INFO:dill:D2: <dict object at 0x7fdb82f605c8>
# D2
INFO:dill:# D2
Lo: <thread.lock object at 0x7fdb8488aef0>
INFO:dill:Lo: <thread.lock object at 0x7fdb8488aef0>
F2: <function _create_lock at 0x7fdb875d57d0>
INFO:dill:F2: <function _create_lock at 0x7fdb875d57d0>
# F2
INFO:dill:# F2
# Lo
INFO:dill:# Lo
T4: <class 'pymongo.read_concern.ReadConcern'>
INFO:dill:T4: <class 'pymongo.read_concern.ReadConcern'>
# T4
INFO:dill:# T4
D2: <dict object at 0x7fdb82fcae88>
INFO:dill:D2: <dict object at 0x7fdb82fcae88>
# D2
INFO:dill:# D2
T4: <class 'pymongo.read_preferences.Primary'>
INFO:dill:T4: <class 'pymongo.read_preferences.Primary'>
# T4
INFO:dill:# T4
D2: <dict object at 0x7fdb82f32910>
INFO:dill:D2: <dict object at 0x7fdb82f32910>
# D2
INFO:dill:# D2
T4: <class 'pymongo.topology.Topology'>
INFO:dill:T4: <class 'pymongo.topology.Topology'>
# T4
INFO:dill:# T4
D2: <dict object at 0x7fdb82fca7f8>
INFO:dill:D2: <dict object at 0x7fdb82fca7f8>
T4: <class 'pymongo.client_session._ServerSessionPool'>
INFO:dill:T4: <class 'pymongo.client_session._ServerSessionPool'>
# T4
INFO:dill:# T4
D2: <dict object at 0x7fdb82f43280>
INFO:dill:D2: <dict object at 0x7fdb82f43280>
# D2
INFO:dill:# D2
D2: <dict object at 0x7fdb82fc4e88>
INFO:dill:D2: <dict object at 0x7fdb82fc4e88>
T4: <class 'pymongo.server.Server'>
INFO:dill:T4: <class 'pymongo.server.Server'>
# T4
INFO:dill:# T4
D2: <dict object at 0x7fdb82fd05c8>
INFO:dill:D2: <dict object at 0x7fdb82fd05c8>
T4: <class 'pymongo.server_description.ServerDescription'>
INFO:dill:T4: <class 'pymongo.server_description.ServerDescription'>
# T4
INFO:dill:# T4
D2: <dict object at 0x7fdb82f327f8>
INFO:dill:D2: <dict object at 0x7fdb82f327f8>
D2: <dict object at 0x7fdb82fd3b40>
INFO:dill:D2: <dict object at 0x7fdb82fd3b40>
# D2
INFO:dill:# D2
T4: <type 'set'>
INFO:dill:T4: <type 'set'>
# T4
INFO:dill:# T4
# D2
INFO:dill:# D2
C2: pymongo.pool.Pool
INFO:dill:C2: pymongo.pool.Pool
# C2
INFO:dill:# C2
D2: <dict object at 0x7fdb82fcfa28>
INFO:dill:D2: <dict object at 0x7fdb82fcfa28>
Lo: <thread.lock object at 0x7fdb8488afb0>
INFO:dill:Lo: <thread.lock object at 0x7fdb8488afb0>
# Lo
INFO:dill:# Lo
C2: pymongo.thread_util.BoundedSemaphore
INFO:dill:C2: pymongo.thread_util.BoundedSemaphore
# C2
INFO:dill:# C2
D2: <dict object at 0x7fdb82f8c4b0>
INFO:dill:D2: <dict object at 0x7fdb82f8c4b0>
T4: <class 'threading._Condition'>
INFO:dill:T4: <class 'threading._Condition'>
# T4
INFO:dill:# T4
D2: <dict object at 0x7fdb82f8c398>
INFO:dill:D2: <dict object at 0x7fdb82f8c398>
Lo: <thread.lock object at 0x7fdb8488afd0>
INFO:dill:Lo: <thread.lock object at 0x7fdb8488afd0>
# Lo
INFO:dill:# Lo
B3: <built-in method acquire of thread.lock object at 0x7fdb8488afd0>
INFO:dill:B3: <built-in method acquire of thread.lock object at 0x7fdb8488afd0>
F2: <function _get_attr at 0x7fdb875d5f50>
INFO:dill:F2: <function _get_attr at 0x7fdb875d5f50>
# F2
INFO:dill:# F2
# B3
INFO:dill:# B3
B3: <built-in method release of thread.lock object at 0x7fdb8488afd0>
INFO:dill:B3: <built-in method release of thread.lock object at 0x7fdb8488afd0>
# B3
INFO:dill:# B3
# D2
INFO:dill:# D2
# D2
INFO:dill:# D2
T4: <class 'pymongo.network.SocketChecker'>
INFO:dill:T4: <class 'pymongo.network.SocketChecker'>
# T4
INFO:dill:# T4
D2: <dict object at 0x7fdb82f8c168>
INFO:dill:D2: <dict object at 0x7fdb82f8c168>
Traceback (most recent call last):
File "/usr/lib/python2.7/runpy.py", line 174, in _run_module_as_main
"__main__", fname, loader, pkg_name)
File "/usr/lib/python2.7/runpy.py", line 72, in _run_code
exec code in run_globals
File "/home/pascal/Wks/GitHub/PEAT-AI/beam-extended/sdks/python/beam_extended/examples/simple.py", line 62, in <module>
run()
File "/home/pascal/Wks/GitHub/PEAT-AI/beam-extended/sdks/python/beam_extended/examples/simple.py", line 54, in run
| 'save' >> WriteToMongo(connection_string, 'mydb', 'mycollection'))
File "/home/pascal/Wks/GitHub/PEAT-AI/beam-extended/sdks/python/venv/local/lib/python2.7/site-packages/apache_beam/pvalue.py", line 111, in __or__
return self.pipeline.apply(ptransform, self)
File "/home/pascal/Wks/GitHub/PEAT-AI/beam-extended/sdks/python/venv/local/lib/python2.7/site-packages/apache_beam/pipeline.py", line 458, in apply
label or transform.label)
File "/home/pascal/Wks/GitHub/PEAT-AI/beam-extended/sdks/python/venv/local/lib/python2.7/site-packages/apache_beam/pipeline.py", line 468, in apply
return self.apply(transform, pvalueish)
File "/home/pascal/Wks/GitHub/PEAT-AI/beam-extended/sdks/python/venv/local/lib/python2.7/site-packages/apache_beam/pipeline.py", line 504, in apply
pvalueish_result = self.runner.apply(transform, pvalueish)
File "/home/pascal/Wks/GitHub/PEAT-AI/beam-extended/sdks/python/venv/local/lib/python2.7/site-packages/apache_beam/runners/runner.py", line 193, in apply
return m(transform, input)
File "/home/pascal/Wks/GitHub/PEAT-AI/beam-extended/sdks/python/venv/local/lib/python2.7/site-packages/apache_beam/runners/runner.py", line 199, in apply_PTransform
return transform.expand(input)
File "beam_extended/io/mongodbio.py", line 206, in expand
return pcoll | iobase.Write(self._sink)
File "/home/pascal/Wks/GitHub/PEAT-AI/beam-extended/sdks/python/venv/local/lib/python2.7/site-packages/apache_beam/pvalue.py", line 111, in __or__
return self.pipeline.apply(ptransform, self)
File "/home/pascal/Wks/GitHub/PEAT-AI/beam-extended/sdks/python/venv/local/lib/python2.7/site-packages/apache_beam/pipeline.py", line 504, in apply
pvalueish_result = self.runner.apply(transform, pvalueish)
File "/home/pascal/Wks/GitHub/PEAT-AI/beam-extended/sdks/python/venv/local/lib/python2.7/site-packages/apache_beam/runners/runner.py", line 193, in apply
return m(transform, input)
File "/home/pascal/Wks/GitHub/PEAT-AI/beam-extended/sdks/python/venv/local/lib/python2.7/site-packages/apache_beam/runners/runner.py", line 199, in apply_PTransform
return transform.expand(input)
File "/home/pascal/Wks/GitHub/PEAT-AI/beam-extended/sdks/python/venv/local/lib/python2.7/site-packages/apache_beam/io/iobase.py", line 959, in expand
return pcoll | WriteImpl(self.sink)
File "/home/pascal/Wks/GitHub/PEAT-AI/beam-extended/sdks/python/venv/local/lib/python2.7/site-packages/apache_beam/pvalue.py", line 111, in __or__
return self.pipeline.apply(ptransform, self)
File "/home/pascal/Wks/GitHub/PEAT-AI/beam-extended/sdks/python/venv/local/lib/python2.7/site-packages/apache_beam/pipeline.py", line 504, in apply
pvalueish_result = self.runner.apply(transform, pvalueish)
File "/home/pascal/Wks/GitHub/PEAT-AI/beam-extended/sdks/python/venv/local/lib/python2.7/site-packages/apache_beam/runners/runner.py", line 193, in apply
return m(transform, input)
File "/home/pascal/Wks/GitHub/PEAT-AI/beam-extended/sdks/python/venv/local/lib/python2.7/site-packages/apache_beam/runners/runner.py", line 199, in apply_PTransform
return transform.expand(input)
File "/home/pascal/Wks/GitHub/PEAT-AI/beam-extended/sdks/python/venv/local/lib/python2.7/site-packages/apache_beam/io/iobase.py", line 1007, in expand
AsIter(write_result_coll))
File "/home/pascal/Wks/GitHub/PEAT-AI/beam-extended/sdks/python/venv/local/lib/python2.7/site-packages/apache_beam/transforms/core.py", line 998, in FlatMap
pardo = ParDo(CallableWrapperDoFn(fn), *args, **kwargs)
File "/home/pascal/Wks/GitHub/PEAT-AI/beam-extended/sdks/python/venv/local/lib/python2.7/site-packages/apache_beam/transforms/core.py", line 838, in __init__
super(ParDo, self).__init__(fn, *args, **kwargs)
File "/home/pascal/Wks/GitHub/PEAT-AI/beam-extended/sdks/python/venv/local/lib/python2.7/site-packages/apache_beam/transforms/ptransform.py", line 639, in __init__
self.args = pickler.loads(pickler.dumps(self.args))
File "/home/pascal/Wks/GitHub/PEAT-AI/beam-extended/sdks/python/venv/local/lib/python2.7/site-packages/apache_beam/internal/pickler.py", line 216, in dumps
s = dill.dumps(o)
File "/home/pascal/Wks/GitHub/PEAT-AI/beam-extended/sdks/python/venv/local/lib/python2.7/site-packages/dill/_dill.py", line 293, in dumps
dump(obj, file, protocol, byref, fmode, recurse)#, strictio)
File "/home/pascal/Wks/GitHub/PEAT-AI/beam-extended/sdks/python/venv/local/lib/python2.7/site-packages/dill/_dill.py", line 286, in dump
pik.dump(obj)
File "/usr/lib/python2.7/pickle.py", line 224, in dump
self.save(obj)
File "/usr/lib/python2.7/pickle.py", line 286, in save
f(self, obj) # Call unbound method with explicit self
File "/usr/lib/python2.7/pickle.py", line 606, in save_list
self._batch_appends(iter(obj))
File "/usr/lib/python2.7/pickle.py", line 639, in _batch_appends
save(x)
File "/usr/lib/python2.7/pickle.py", line 331, in save
self.save_reduce(obj=obj, *rv)
File "/usr/lib/python2.7/pickle.py", line 425, in save_reduce
save(state)
File "/usr/lib/python2.7/pickle.py", line 286, in save
f(self, obj) # Call unbound method with explicit self
File "/home/pascal/Wks/GitHub/PEAT-AI/beam-extended/sdks/python/venv/local/lib/python2.7/site-packages/apache_beam/internal/pickler.py", line 184, in new_save_module_dict
return old_save_module_dict(pickler, obj)
File "/home/pascal/Wks/GitHub/PEAT-AI/beam-extended/sdks/python/venv/local/lib/python2.7/site-packages/dill/_dill.py", line 893, in save_module_dict
StockPickler.save_dict(pickler, obj)
File "/usr/lib/python2.7/pickle.py", line 655, in save_dict
self._batch_setitems(obj.iteritems())
File "/usr/lib/python2.7/pickle.py", line 687, in _batch_setitems
save(v)
File "/usr/lib/python2.7/pickle.py", line 331, in save
self.save_reduce(obj=obj, *rv)
File "/usr/lib/python2.7/pickle.py", line 425, in save_reduce
save(state)
File "/usr/lib/python2.7/pickle.py", line 286, in save
f(self, obj) # Call unbound method with explicit self
File "/home/pascal/Wks/GitHub/PEAT-AI/beam-extended/sdks/python/venv/local/lib/python2.7/site-packages/apache_beam/internal/pickler.py", line 184, in new_save_module_dict
return old_save_module_dict(pickler, obj)
File "/home/pascal/Wks/GitHub/PEAT-AI/beam-extended/sdks/python/venv/local/lib/python2.7/site-packages/dill/_dill.py", line 893, in save_module_dict
StockPickler.save_dict(pickler, obj)
File "/usr/lib/python2.7/pickle.py", line 655, in save_dict
self._batch_setitems(obj.iteritems())
File "/usr/lib/python2.7/pickle.py", line 687, in _batch_setitems
save(v)
File "/usr/lib/python2.7/pickle.py", line 331, in save
self.save_reduce(obj=obj, *rv)
File "/usr/lib/python2.7/pickle.py", line 425, in save_reduce
save(state)
File "/usr/lib/python2.7/pickle.py", line 286, in save
f(self, obj) # Call unbound method with explicit self
File "/home/pascal/Wks/GitHub/PEAT-AI/beam-extended/sdks/python/venv/local/lib/python2.7/site-packages/apache_beam/internal/pickler.py", line 184, in new_save_module_dict
return old_save_module_dict(pickler, obj)
File "/home/pascal/Wks/GitHub/PEAT-AI/beam-extended/sdks/python/venv/local/lib/python2.7/site-packages/dill/_dill.py", line 893, in save_module_dict
StockPickler.save_dict(pickler, obj)
File "/usr/lib/python2.7/pickle.py", line 655, in save_dict
self._batch_setitems(obj.iteritems())
File "/usr/lib/python2.7/pickle.py", line 687, in _batch_setitems
save(v)
File "/usr/lib/python2.7/pickle.py", line 286, in save
f(self, obj) # Call unbound method with explicit self
File "/home/pascal/Wks/GitHub/PEAT-AI/beam-extended/sdks/python/venv/local/lib/python2.7/site-packages/apache_beam/internal/pickler.py", line 184, in new_save_module_dict
return old_save_module_dict(pickler, obj)
File "/home/pascal/Wks/GitHub/PEAT-AI/beam-extended/sdks/python/venv/local/lib/python2.7/site-packages/dill/_dill.py", line 893, in save_module_dict
StockPickler.save_dict(pickler, obj)
File "/usr/lib/python2.7/pickle.py", line 655, in save_dict
self._batch_setitems(obj.iteritems())
File "/usr/lib/python2.7/pickle.py", line 692, in _batch_setitems
save(v)
File "/usr/lib/python2.7/pickle.py", line 331, in save
self.save_reduce(obj=obj, *rv)
File "/usr/lib/python2.7/pickle.py", line 425, in save_reduce
save(state)
File "/usr/lib/python2.7/pickle.py", line 286, in save
f(self, obj) # Call unbound method with explicit self
File "/home/pascal/Wks/GitHub/PEAT-AI/beam-extended/sdks/python/venv/local/lib/python2.7/site-packages/apache_beam/internal/pickler.py", line 184, in new_save_module_dict
return old_save_module_dict(pickler, obj)
File "/home/pascal/Wks/GitHub/PEAT-AI/beam-extended/sdks/python/venv/local/lib/python2.7/site-packages/dill/_dill.py", line 893, in save_module_dict
StockPickler.save_dict(pickler, obj)
File "/usr/lib/python2.7/pickle.py", line 655, in save_dict
self._batch_setitems(obj.iteritems())
File "/usr/lib/python2.7/pickle.py", line 687, in _batch_setitems
save(v)
File "/usr/lib/python2.7/pickle.py", line 286, in save
f(self, obj) # Call unbound method with explicit self
File "/usr/lib/python2.7/pickle.py", line 731, in save_inst
save(stuff)
File "/usr/lib/python2.7/pickle.py", line 286, in save
f(self, obj) # Call unbound method with explicit self
File "/home/pascal/Wks/GitHub/PEAT-AI/beam-extended/sdks/python/venv/local/lib/python2.7/site-packages/apache_beam/internal/pickler.py", line 184, in new_save_module_dict
return old_save_module_dict(pickler, obj)
File "/home/pascal/Wks/GitHub/PEAT-AI/beam-extended/sdks/python/venv/local/lib/python2.7/site-packages/dill/_dill.py", line 893, in save_module_dict
StockPickler.save_dict(pickler, obj)
File "/usr/lib/python2.7/pickle.py", line 655, in save_dict
self._batch_setitems(obj.iteritems())
File "/usr/lib/python2.7/pickle.py", line 687, in _batch_setitems
save(v)
File "/usr/lib/python2.7/pickle.py", line 331, in save
self.save_reduce(obj=obj, *rv)
File "/usr/lib/python2.7/pickle.py", line 425, in save_reduce
save(state)
File "/usr/lib/python2.7/pickle.py", line 286, in save
f(self, obj) # Call unbound method with explicit self
File "/home/pascal/Wks/GitHub/PEAT-AI/beam-extended/sdks/python/venv/local/lib/python2.7/site-packages/apache_beam/internal/pickler.py", line 184, in new_save_module_dict
return old_save_module_dict(pickler, obj)
File "/home/pascal/Wks/GitHub/PEAT-AI/beam-extended/sdks/python/venv/local/lib/python2.7/site-packages/dill/_dill.py", line 893, in save_module_dict
StockPickler.save_dict(pickler, obj)
File "/usr/lib/python2.7/pickle.py", line 655, in save_dict
self._batch_setitems(obj.iteritems())
File "/usr/lib/python2.7/pickle.py", line 687, in _batch_setitems
save(v)
File "/usr/lib/python2.7/pickle.py", line 313, in save
(t.__name__, obj))
pickle.PicklingError: Can't pickle 'poll' object: <select.poll object at 0x7fdb82f95ab0>
输入要删除的标记的键。