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我已經搜索了近10個小時這個東西，但沒有運氣的互聯網...關於如何在谷歌地圖V2使用谷歌方向API的乾淨和清晰的解釋將真的有幫助....如何在android中使用庫實現Google Directions API？
我走了通過整個漫長的過程，但我想用一個庫，因爲我懶得實施那個龐大的代碼與我的...
我已經成功地從polok實施這個庫。
但你可以在截圖是方向不準確，多段線幾圈後動越野....
我也tyczj發現這個庫看看。
但沒有實現....
使用這個庫將是非常有益或者實現谷歌direcions API任何其他方式的例子.....
這裏是我的MapActivity的片段：
public class MapActivity extends FragmentActivity implements GoogleApiClient.ConnectionCallbacks,
GoogleApiClient.OnConnectionFailedListener, LocationListener {
private GoogleMap mMap; // Might be null if Google Play services APK is not available
double latitude, longitude;
Bundle extras;
String add;
Geocoder geocoder;
LatLng position;
private Location mLastLocation;
// Google client to interact with Google API
private GoogleApiClient mGoogleApiClient;
private boolean mInProgress;
// boolean flag to toggle periodic location updates
private LocationRequest mLocationRequest;
// Location updates intervals in sec
private static int UPDATE_INTERVAL = 10000; // 10 sec
private static int FATEST_INTERVAL = 5000; // 5 sec
private static int DISPLACEMENT = 1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_map);
setUpMapIfNeeded();
extras = getIntent().getExtras();
mMap.setMapType(GoogleMap.MAP_TYPE_NORMAL);
mMap.setMyLocationEnabled(true);
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build();
mLocationRequest = LocationRequest.create()
.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY)
.setInterval(UPDATE_INTERVAL)
.setFastestInterval(FATEST_INTERVAL)
.setSmallestDisplacement(DISPLACEMENT);
if (!mGoogleApiClient.isConnected() || !mGoogleApiClient.isConnecting() && !mInProgress) {
mInProgress = true;
mGoogleApiClient.connect();
}
add = extras.getString("address");
geocoder = new Geocoder(this);
try {
List<Address> addresses = geocoder.getFromLocationName(add,1);
if(addresses.size()>0){
latitude = addresses.get(0).getLatitude();
longitude = addresses.get(0).getLongitude();
}
} catch (IOException e) {
e.printStackTrace();
}
position = new LatLng(latitude,longitude);
Marker marker = mMap.addMarker(new MarkerOptions().position(position).title(add));
CameraUpdate cu = CameraUpdateFactory.newLatLngZoom(marker.getPosition(), 12F);
mMap.animateCamera(cu);
}
@Override
protected void onDestroy() {
mInProgress = false;
if (mGoogleApiClient.isConnected()) {
LocationServices.FusedLocationApi.removeLocationUpdates(mGoogleApiClient, this);
mGoogleApiClient.disconnect();
}
super.onDestroy();
}
@Override
protected void onResume() {
super.onResume();
setUpMapIfNeeded();
}
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) {
}
}
}
@Override
public void onConnected(Bundle bundle) {
LocationServices.FusedLocationApi.requestLocationUpdates(
mGoogleApiClient, mLocationRequest, this);
displayLocation();
}
@Override
public void onConnectionSuspended(int i) {
mGoogleApiClient.connect();
}
@Override
public void onLocationChanged(Location location) {
mLastLocation = location;
displayLocation();
}
@Override
public void onConnectionFailed(ConnectionResult connectionResult) {
}
private LatLng displayLocation() {
mLastLocation = LocationServices.FusedLocationApi
.getLastLocation(mGoogleApiClient);
if (mLastLocation != null) {
double myLatitude = mLastLocation.getLatitude();
double myLongitude = mLastLocation.getLongitude();
mMap.addMarker(new MarkerOptions().position(new LatLng(myLatitude, myLongitude))
.icon(BitmapDescriptorFactory.fromResource(R.drawable.current))
.title("Me"));
return new LatLng(myLatitude,myLongitude);
}
return null;
}
}
謝謝大家的回答.....