相关疑难解决方法(0)

我正在尝试使用为Android提供的最新Map API 2.0.我正在使用支持库,因为我想支持Android 2.2.以下是我的代码:

主要活动类

public class MainActivity extends FragmentActivity {

    public FragmentManager fManager ;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        fManager = getSupportFragmentManager();
        Button showMapButton = (Button) findViewById(R.id.showMapButton);
        showMapButton.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                loadMapFragment();
            }
        });
    }

    private void loadMapFragment() {
        MapPageFragment plotterFragment = new MapPageFragment();
        FragmentTransaction ft = fManager.beginTransaction();
        ft.replace(R.id.allFragmentsFrameLayout, plotterFragment);
        ft.addToBackStack(null);
        ft.commit();
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.activity_main, menu);
        return true;
    }
}

主活动布局文件

<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent" …

我有一个包含MapView的片段.我在XML文件中添加了这个视图,如下所示:

<?xml version="1.0" encoding="utf-8"?>

<com.google.android.gms.maps.MapView
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:map="http://schemas.android.com/apk/res-auto"
    android:id="@+id/mapView"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:clickable="true"
    map:uiCompass="true"
    android:background="#00000000" />

我已将它链接到我的代码,如下所示:

public class HotSpotsFragment extends MainFragment implements LocationListener {

    private static final String TAG = "HotSpotsFragment";
    private Context context;
    private LocationManager locationManager;
    private MapView mapView;
    private GoogleMap googleMap;


    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {

        // create view
        View view = inflater.inflate(R.layout.fragment_hot_spots, container, false);

        // Getting context
        context = getActivity().getApplicationContext();

        // Make sure user's device supports Google play services
        try {
            MapsInitializer.initialize(getActivity());
        } …