Search box for finding a marker (Google Map)
I want to ask about an android app that I am developing using google map in my apps. I am already making some markers on my map (1323 data, so the marker is 1323). So the question is:
I want to create a search box to find a specific marker on my map. I don't know how to find it. Can it find the title or snippet in the marker
c = myDbHelper.query("Landslide", null, null, null, null,null, null);
if(c.moveToFirst()) {
do {
String loc = c.getString(3);
Double lat = c.getDouble(4);
Double lng = c.getDouble(5);
String date = c.getString(1);
//Integer death = c.getInt(6);
mMap.addMarker(new MarkerOptions()
.position(new LatLng(lat, lng))
.title(loc + "")
.snippet("Latitude:" + lat + " " + "Longitude:" + lng + " " + "Date:" + date + "")
.icon(BitmapDescriptorFactory.fromResource(R.drawable.red1)));
} while (c.moveToNext());
}
}
Thanks in advance who helps me, Regards, Hafizul Reza
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I'm pretty sure your token data is stored in SQLite on your device. You can try to add a search box like EditText to your xml layout:
<EditText android:id="@+id/edit_textt_d" android:layout_width="wrap_content" android:layout_height="wrap_content"/>
Then we implement then onChange:
yourEditText = (EditText) findViewById(R.id.yourEditTextId);
yourEditTextaddTextChangedListener(new TextWatcher() {
@Override
public void afterTextChanged(Editable s) {}
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
changeMarker(s)
}
});
On every change, you must: remove the current marker of your map, only ask for markers that match the value of the search box:
public void changeMarker(String searchString) {
...
myGoogleMap.clear();
c=myDbHelper.getReadableDatabase().rawQuery("SELECT * FROM marker WHERE marker.name LIKE '"+searchString+"%'");
...
}
And then add the marker back to the map as you did in your question. Hope this help ...
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Create a global list / map / array of your markers:
private HashMap<String, Marker> markers = new HashMap<String,Marker>();
And fill it with markers:
//...
Marker marker = mMap.addMarker(new MarkerOptions()
.position(new LatLng(lat, lng))
.title(loc + "")
.snippet("Latitude:" + lat + " " + "Longitude:" + lng + " " + "Date:" + date + "")
.icon(BitmapDescriptorFactory.fromResource(R.drawable.red1)));
markers.put("Name1", marker);
//add more and more markers
Now you can easily find and get any marker:
Marker marker = markers.get("Name1");
As the first parameter of the HashMap markers, you can put the title / fragment Marker / coordinates / ....
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