地理围栏:GoogleApiClient 尚未连接
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【中文标题】地理围栏:GoogleApiClient 尚未连接【英文标题】:Geofencing : GoogleApiClient is not connected yet 【发布时间】:2016-11-09 04:54:33 【问题描述】:我正在尝试在我的应用程序中实现地理围栏,因此每当用户输入其中一个地理围栏对象时,就会发生一些事情。当我添加这个 sn-p 时,遵循 android 开发人员指南(让您的应用程序位置感知):
LocationServices.GeofencingApi.addGeofences(
mGoogleApiClient,
getGeofencingRequest(),
getGeofencePendingIntent()
).setResultCallback(this);
我在加载地理围栏后将其放入我的 onMapReady() 中,以便它们立即添加到我的应用程序中。但是,我收到此错误:
java.lang.IllegalStateException: GoogleApiClient is not connected yet.
我确定我已经在 onCreate() 中构建了 google api 客户端,但我仍然收到此错误。如果我删除上面的 sn-p(第一个代码 sn-p),则错误不再存在。我做错了什么?
代码:
公共类 MapsActivity 扩展 AppCompatActivity 实现 OnMapReadyCallback、ConnectionCallbacks、OnConnectionFailedListener、LocationListener、ResultCallback
//Google Maps
public GoogleMap mMap;
private GoogleApiClient mGoogleApiClient;
LocationRequest mLocationRequest = new LocationRequest();
public Location mCurrentLocation;
private static final int FINE_LOCATION_PERMISSION_REQUEST = 1;
private static final int CONNECTION_RESOLUTION_REQUEST = 2;
List<Marker> markerList = new ArrayList<Marker>();
//Temporary Vars
double lat = 0;
double lon = 0;
Marker current_marker;
//Request Info vars
static final int GET_DETAILS = 1;
static final int EDIT_DETAILS = 2;
//Debug
private static final String TAG = "GeekysMessage";
SharedPreferences sharedPreferences;
int markerCount;
private Toolbar toolbar;
//Geofence
private boolean mGeofencesAdded;
ArrayList mGeofenceList = new ArrayList<Geofence>();
private PendingIntent mGeofencePendingIntent;
public int geofenceCount;
@Override
protected void onCreate(Bundle savedInstanceState)
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_maps);
toolbar = (Toolbar) findViewById(R.id.my_toolbar);
setSupportActionBar(toolbar);
// Obtain the SupportMapFragment and get notified when the map is ready to be used.
SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
.findFragmentById(R.id.map);
mapFragment.getMapAsync(this);
buildGoogleAPIClient();
//Geofence
// Empty list for storing geofences.
mGeofenceList = new ArrayList<Geofence>();
// Initially set the PendingIntent used in addGeofences() and removeGeofences() to null.
mGeofencePendingIntent = null;
@Override
protected void onResume()
super.onResume();
buildGoogleAPIClient();
if (mGoogleApiClient.isConnected())
startLocationUpdates();
//LOCATION
private void buildGoogleAPIClient()
if (mGoogleApiClient == null)
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build();
createLocationRequest();
protected void createLocationRequest()
mLocationRequest = new LocationRequest();
mLocationRequest.setInterval(10000);
mLocationRequest.setFastestInterval(5000);
mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
protected void onStart()
mGoogleApiClient.connect();
super.onStart();
protected void onStop()
mGoogleApiClient.disconnect();
super.onStop();
protected void startLocationUpdates()
LocationServices.FusedLocationApi.requestLocationUpdates(
mGoogleApiClient, mLocationRequest, this);
@Override
public void onConnected(@Nullable Bundle bundle)
if (ContextCompat.checkSelfPermission(this,
Manifest.permission.ACCESS_FINE_LOCATION)
== PackageManager.PERMISSION_GRANTED)
if (mCurrentLocation == null)
mCurrentLocation = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient);
updateUI();
startLocationUpdates();
@TargetApi(Build.VERSION_CODES.N)
@Override
public void onLocationChanged(Location location)
mCurrentLocation = location;
updateUI();
Toast.makeText(this, "Updated",
Toast.LENGTH_SHORT).show();
private void updateUI()
@Override
public void onConnectionSuspended(int i)
Toast.makeText(this, "Connection suspended", Toast.LENGTH_SHORT).show();
@Override
public void onConnectionFailed(@NonNull ConnectionResult connectionResult)
if (connectionResult.hasResolution())
try
connectionResult.startResolutionForResult(this, CONNECTION_RESOLUTION_REQUEST);
catch (IntentSender.SendIntentException e)
// There was an error with the resolution intent. Try again.
mGoogleApiClient.connect();
else
Dialog dialog = GooglePlayServicesUtil.getErrorDialog(connectionResult.getErrorCode(), this, 1);
dialog.show();
protected void stopLocationUpdates()
// It is a good practice to remove location requests when the activity is in a paused or
// stopped state. Doing so helps battery performance and is especially
// recommended in applications that request frequent location updates.
// The final argument to @code requestLocationUpdates() is a LocationListener
// (http://developer.android.com/reference/com/google/android/gms/location/LocationListener.html).
LocationServices.FusedLocationApi.removeLocationUpdates(mGoogleApiClient, this);
@Override
protected void onPause()
super.onPause();
// Stop location updates to save battery, but don't disconnect the GoogleApiClient object.
if (mGoogleApiClient.isConnected())
stopLocationUpdates();
int requestCode = 0;
//MAP
@Override
public void onMapReady(GoogleMap googleMap)
mMap = googleMap;
//load all saved markers
loadMarkers();
LocationServices.GeofencingApi.addGeofences(
mGoogleApiClient,
getGeofencingRequest(),
getGeofencePendingIntent()
).setResultCallback(this);
//Permissions
if (ContextCompat.checkSelfPermission(this,
Manifest.permission.ACCESS_FINE_LOCATION)
!= PackageManager.PERMISSION_GRANTED)
ActivityCompat.requestPermissions(this,
new String[]Manifest.permission.ACCESS_FINE_LOCATION,
FINE_LOCATION_PERMISSION_REQUEST);
else
mMap.setMyLocationEnabled(true);
private void loadMarkers()
// Opening the sharedPreferences object
sharedPreferences = getSharedPreferences("location", 0);
// Getting number of locations already stored
markerCount = sharedPreferences.getInt("markerCount", 0);
//if marker are already saved
if (markerCount != 0)
String lat = "";
String lng = "";
String marker_title = null;
String marker_snippet = null;
int marker_radius = 0;
for (int i=0; i < markerCount; i++)
lat = sharedPreferences.getString("lat"+i, "0");
lng = sharedPreferences.getString("lng"+i, "0");
marker_title = sharedPreferences.getString("title"+i, "");
marker_snippet = sharedPreferences.getString("snippet"+i, "");
marker_radius = sharedPreferences.getInt("radius"+i, 20);
double lati = Double.valueOf(lat);
double lngi = Double.valueOf(lng);
addMarker(lati, lngi, marker_title, marker_snippet);
addGeofence(marker_title, lati, lngi, marker_radius);
private PendingIntent getGeofencePendingIntent()
// Reuse the PendingIntent if we already have it.
if (mGeofencePendingIntent != null)
return mGeofencePendingIntent;
Intent intent = new Intent(this, GeofenceTransitionsIntentService.class);
// We use FLAG_UPDATE_CURRENT so that we get the same pending intent back when
// calling addGeofences() and removeGeofences().
return PendingIntent.getService(this, 0, intent, PendingIntent.
FLAG_UPDATE_CURRENT);
public void addMarker(double lati, double longi, String title, String snippet)
if (snippet=="")snippet = null;
Marker m = mMap.addMarker(new MarkerOptions()
.position(new LatLng(lati, longi))
.title(title)
.snippet(snippet)
.draggable(true));
markerList.add(m);
public void saveMarkers()
SharedPreferences.Editor editor = sharedPreferences.edit();
editor.clear();
markerCount = 0;
for (Marker i : markerList)
//Save to sharedprefences
markerCount++;
editor.putString("lat" + Integer.toString((markerCount - 1)), String.valueOf(i.getPosition().latitude));
editor.putString("lng" + Integer.toString((markerCount - 1)), String.valueOf(i.getPosition().longitude));
editor.putString("title" + Integer.toString((markerCount - 1)),i.getTitle());
editor.putString("snippet" + Integer.toString((markerCount - 1)),i.getSnippet());
editor.putInt("markerCount", markerCount);
editor.commit();
private GeofencingRequest getGeofencingRequest()
GeofencingRequest.Builder builder = new GeofencingRequest.Builder();
builder.setInitialTrigger(GeofencingRequest.INITIAL_TRIGGER_ENTER);
builder.addGeofences(mGeofenceList);
return builder.build();
public void addGeofence(String key, double lat, double lng, int radius )
mGeofenceList.add(new Geofence.Builder()
// Set the request ID of the geofence. This is a string to identify this
// geofence.
.setRequestId(key)
.setCircularRegion(
lat,
lng,
radius
)
.setExpirationDuration(12*60*60*1000)
.setTransitionTypes(Geofence.GEOFENCE_TRANSITION_ENTER |
Geofence.GEOFENCE_TRANSITION_EXIT)
.build());
Circle circle = mMap.addCircle(new CircleOptions()
.center(new LatLng(lat, lng))
.radius(radius)
.fillColor(Color.parseColor("#02bbff")));
@Override
public void onResult(@NonNull Status status)
if (status.isSuccess())
// Update state and save in shared preferences.
mGeofencesAdded = !mGeofencesAdded;
Toast.makeText(
this,
getString(mGeofencesAdded ? R.string.geofences_added :
R.string.geofences_removed),
Toast.LENGTH_SHORT
).show();
else
// Get the status code for the error and log it using a user-friendly message.
String errorMessage = GeofenceErrorMessages.getErrorString(this,
status.getStatusCode());
Log.e(TAG, errorMessage);
任何帮助将不胜感激。
【问题讨论】:
【参考方案1】:您在onStop()
中呼叫mGoogleApiClient.disconnect();
。 LocationServices.GeofencingApi.addGeofences(
代码必须触发 onStop ,因此 mGoogleApiClient 正在断开连接。
在创建时
Boolean fromOnMapReady = false;
在 OnMapReady 中
@Override
public void onMapReady(GoogleMap googleMap)
fromOnMapReady = true;
在 OnStop 中
protected void onStop()
if(!fromOnMapReady)
mGoogleApiClient.disconnect();
super.onStop();
一旦任何进程完成运行 reset fromOnMapReady = false
否则 mGoogleApiClient 将不会在需要时断开连接
【讨论】:
没有用...我什至删除了那个事件,但仍然无法连接到 google api...还有其他建议吗? 连接一次吗? 别担心,我已经修好了,不过我还是给你功劳吧 :)以上是关于地理围栏:GoogleApiClient 尚未连接的主要内容,如果未能解决你的问题,请参考以下文章
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