По-видимому, проблема связана с самой карты, а не маркер.
Прежде всего, проверьте, какую версию сервисов Google Play вы используете в качестве библиотеки. Если у вас есть что-то до 6.5 version (выпущено в декабре 2014 года), ознакомьтесь со следующим кодом (заимствованиями в образцах услуг Google Play), чтобы убедиться, что у вас нет нулевого объекта карты.
/*
* Copyright (C) 2012 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.example.mapdemo;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.SupportMapFragment;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.MarkerOptions;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
/**
* This shows how to create a simple activity with a map and a marker on the map.
* <p>
* Notice how we deal with the possibility that the Google Play services APK is not
* installed/enabled/updated on a user's device.
*/
public class BasicMapDemoActivity extends FragmentActivity {
/**
* Note that this may be null if the Google Play services APK is not available.
*/
private GoogleMap mMap;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.basic_demo);
setUpMapIfNeeded();
}
@Override
protected void onResume() {
super.onResume();
setUpMapIfNeeded();
}
/**
* Sets up the map if it is possible to do so (i.e., the Google Play services APK is correctly
* installed) and the map has not already been instantiated.. This will ensure that we only ever
* call {@link #setUpMap()} once when {@link #mMap} is not null.
* <p>
* If it isn't installed {@link SupportMapFragment} (and
* {@link com.google.android.gms.maps.MapView MapView}) will show a prompt for the user to
* install/update the Google Play services APK on their device.
* <p>
* A user can return to this FragmentActivity after following the prompt and correctly
* installing/updating/enabling the Google Play services. Since the FragmentActivity may not
* have been completely destroyed during this process (it is likely that it would only be
* stopped or paused), {@link #onCreate(Bundle)} may not be called again so we should call this
* method in {@link #onResume()} to guarantee that it will be called.
*/
private void setUpMapIfNeeded() {
// Do a null check to confirm that we have not already instantiated the map.
if (mMap == null) {
// Try to obtain the map from the SupportMapFragment.
mMap = ((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map))
.getMap();
// Check if we were successful in obtaining the map.
if (mMap != null) {
setUpMap();
}
}
}
/**
* This is where we can add markers or lines, add listeners or move the camera. In this case, we
* just add a marker near Africa.
* <p>
* This should only be called once and when we are sure that {@link #mMap} is not null.
*/
private void setUpMap() {
mMap.addMarker(new MarkerOptions().position(new LatLng(0, 0)).title("Marker"));
}
}
Другое решение, которое я настоятельно рекомендую, чтобы получить последнюю библиотеку сервисов Google Play (проверить here). Затем вам придется изменить свой код в соответствии с this guide из google, используя getMapAsync() (вместо getMap()) и обратный вызов, где вы можете делать все, пока карта готова к использованию, без каких-либо головных болей ,
в 'NPE' находится в ViewPageAdapter.java:201, что такое строка no.201 в этом классе – user2450263
googleMap = fm.getMap(); – CraZyDroiD