Android-使用GPS跟踪，getMap已弃用

我试着用gps追踪并在地图上标出位置。我尝试了上面的代码，但是getMap不推荐使用，我的手机上出现了一个屏幕。有人能帮我解决这个问题吗

GetMap（）已弃用。您需要在类中实现

OnMapReadyCallback

public class LocationActivity extends FragmentActivity implements
        LocationListener,
        GoogleApiClient.ConnectionCallbacks,
        GoogleApiClient.OnConnectionFailedListener {

    private static final String TAG = "LocationActivity";
    private static final long INTERVAL = 1000 * 60 * 1; //1 minute
    private static final long FASTEST_INTERVAL = 1000 * 60 * 1; // 1 minute
    Button btnFusedLocation;
    TextView tvLocation;
    LocationRequest mLocationRequest;
    GoogleApiClient mGoogleApiClient;
    Location mCurrentLocation;
    String mLastUpdateTime;
    GoogleMap googleMap;

    protected void createLocationRequest() {
        mLocationRequest = new LocationRequest();
        mLocationRequest.setInterval(INTERVAL);
        mLocationRequest.setFastestInterval(FASTEST_INTERVAL);
        mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        if (!isGooglePlayServicesAvailable()) {
            finish();
        }
        createLocationRequest();
        mGoogleApiClient = new GoogleApiClient.Builder(this)
                .addApi(LocationServices.API)
                .addConnectionCallbacks(this)
                .addOnConnectionFailedListener(this)
                .build();

        setContentView(R.layout.activity_location_google_map);
        SupportMapFragment fm = (SupportMapFragment) getSupportFragmentManager()
                .findFragmentById(R.id.map);
        googleMap = fm.getMap();
        googleMap.getUiSettings().setZoomControlsEnabled(true);
    }
}

并重写：

onMapReady（）

函数

public class LocationActivity extends FragmentActivity implements
    LocationListener,
    GoogleApiClient.ConnectionCallbacks,
    GoogleApiClient.OnConnectionFailedListener, OnMapReadyCallback  {

另外，在代码中添加：

@Override
public void onMapReady(GoogleMap map) {
    googleMap = map;
    googleMap.getUiSettings().setZoomControlsEnabled(true);
    //add code here
}

在布局上：

SupportMapFragment fm = (SupportMapFragment) getSupportFragmentManager()
            .findFragmentById(R.id.map);
fm.getMapAsync(this); 

您可以按照这个很好的答案正确地实现映射：我已经尝试过了，但是它说“尝试在空对象引用上调用getMapAsync（..）。您是否调用了

fm.getMapAsync（this）；

？是的，MapFragment MapFragment=（MapFragment）getFragmentManager（）.findFragmentById（R.id.map）；mapFragment.getMapAsync（this）；使用：

SupportMapFragment fm=（SupportMapFragment）getSupportFragmentManager（）.findFragmentById（R.id.map）；fm.getMapAsync（this）；

<fragment
    android:id="@+id/map"
    android:name="com.google.android.gms.maps.SupportMapFragment"
    android:layout_width="match_parent"
    android:layout_height="match_parent">