android-GoogleApiClient：当服务处于后台时,隐藏状态栏上的GPS图标
作者：互联网
我正在使用GoogleApiClient来实现位置侦听器服务,但是GPS图标始终显示,即使该服务在后台也是如此.服务在后台时如何禁用GPS图标？
请遵循以下来源：
活动
public class ShowDistanceActivity extends AppCompatActivity implements ILocationConstants {
protected static final String TAG = ShowDistanceActivity.class.getSimpleName();
@Bind(R.id.tvLocationData)
TextView tvLocationData;
@Bind(R.id.toolbar)
Toolbar toolbar;
/**
* Receiver listening to Location updates and updating UI in activity
*/
private LocationReceiver locationReceiver;
/**
* Permission util with callback mechanism to avoid boilerplate code
* <p/>
* https://github.com/kayvannj/PermissionUtil
*/
private PermissionUtil.PermissionRequestObject mBothPermissionRequest;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_show_distance);
ButterKnife.bind(this);
setSupportActionBar(toolbar);
locationReceiver = new LocationReceiver();
}
private void startLocationService() {
Intent serviceIntent = new Intent(this, LocationService.class);
startService(serviceIntent);
}
@Override
protected void onStart() {
super.onStart();
LocalBroadcastManager.getInstance(this).registerReceiver(locationReceiver, new IntentFilter(LOACTION_ACTION));
/**
* Runtime permissions are required on Android M and above to access User's location
*/
if (AppUtils.hasM() && !(ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) == PackageManager.PERMISSION_GRANTED
&& ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED)) {
askPermissions();
} else {
startLocationService();
}
}
/**
* Ask user for permissions to access GPS location on Android M
*/
public void askPermissions() {
mBothPermissionRequest =
PermissionUtil.with(this).request(Manifest.permission.ACCESS_COARSE_LOCATION, Manifest.permission.ACCESS_FINE_LOCATION).onResult(
new Func2() {
@Override
protected void call(int requestCode, String[] permissions, int[] grantResults) {
if (grantResults[0] == PackageManager.PERMISSION_GRANTED && grantResults[1] == PackageManager.PERMISSION_GRANTED) {
startLocationService();
} else {
Toast.makeText(ShowDistanceActivity.this, R.string.permission_denied, Toast.LENGTH_LONG).show();
}
}
}).ask(PERMISSION_ACCESS_LOCATION_CODE);
}
@Override
protected void onStop() {
super.onStop();
LocalBroadcastManager.getInstance(this).unregisterReceiver(locationReceiver);
}
private class LocationReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
if (null != intent && intent.getAction().equals(LOACTION_ACTION)) {
String locationData = intent.getStringExtra(LOCATION_MESSAGE);
tvLocationData.setText(locationData);
}
}
}
@Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
if (null != mBothPermissionRequest) {
mBothPermissionRequest.onRequestPermissionsResult(requestCode, permissions, grantResults);
}
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
}
}
服务
public class LocationService extends Service implements GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener, LocationListener, ILocationConstants, IPreferenceConstants {
private static final String TAG = LocationService.class.getSimpleName();
/**
* Provides the entry point to Google Play services.
*/
protected GoogleApiClient mGoogleApiClient;
/**
* Stores parameters for requests to the FusedLocationProviderApi.
*/
protected LocationRequest mLocationRequest;
/**
* Represents a geographical location.
*/
protected Location mCurrentLocation;
private String mLatitudeLabel;
private String mLongitudeLabel;
private String mLastUpdateTimeLabel;
private String mDistance;
/**
* Time when the location was updated represented as a String.
*/
protected String mLastUpdateTime;
private Location oldLocation;
private Location newLocation;
private AppPreferences appPreferences;
/**
* Total distance covered
*/
private float distance;
@Override
public void onCreate() {
super.onCreate();
Log.d(TAG, "onCreate() called");
appPreferences = new AppPreferences(this);
oldLocation = new Location("Point A");
newLocation = new Location("Point B");
mLatitudeLabel = getString(R.string.latitude_label);
mLongitudeLabel = getString(R.string.longitude_label);
mLastUpdateTimeLabel = getString(R.string.last_update_time_label);
mDistance = getString(R.string.distance);
mLastUpdateTime = "";
distance = appPreferences.getFloat(PREF_DISTANCE, 0);
Log.d(TAG, "onCreate Distance: " + distance);
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
Log.d(TAG, "onStartCommand called");
buildGoogleApiClient();
mGoogleApiClient.connect();
if (mGoogleApiClient.isConnected()) {
startLocationUpdates();
}
return Service.START_STICKY;
}
/**
* Builds a GoogleApiClient. Uses the {@code #addApi} method to request the
* LocationServices API.
*/
protected synchronized void buildGoogleApiClient() {
Log.d(TAG, "buildGoogleApiClient() called");
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build();
createLocationRequest();
}
protected void createLocationRequest() {
Log.d(TAG, "createLocationRequest() called");
mLocationRequest = new LocationRequest();
mLocationRequest.setInterval(UPDATE_INTERVAL_IN_MILLISECONDS);
mLocationRequest.setFastestInterval(FASTEST_UPDATE_INTERVAL_IN_MILLISECONDS);
mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
mLocationRequest.setSmallestDisplacement(DISPLACEMENT);
}
/**
* Requests location updates from the FusedLocationApi.
*/
protected void startLocationUpdates() {
try {
Log.d(TAG, "startLocationUpdates called");
LocationServices.FusedLocationApi.requestLocationUpdates(
mGoogleApiClient, mLocationRequest, this);
} catch (SecurityException ex) {
ex.printStackTrace();
}
}
/**
* Updates the latitude, the longitude, and the last location time in the UI.
*/
private void updateUI() {
if (null != mCurrentLocation) {
StringBuilder sbLocationData = new StringBuilder();
sbLocationData.append(mLatitudeLabel)
.append(" ")
.append(mCurrentLocation.getLatitude())
.append("\n")
.append(mLongitudeLabel)
.append(" ")
.append(mCurrentLocation.getLongitude())
.append("\n")
.append(mLastUpdateTimeLabel)
.append(" ")
.append(mLastUpdateTime)
.append("\n")
.append(mDistance)
.append(" ")
.append(getUpdatedDistance())
.append(" meters");
/*
* update preference with latest value of distance
*/
appPreferences.putFloat(PREF_DISTANCE, distance);
Log.d(TAG, "Location Data:\n" + sbLocationData.toString());
sendLocationBroadcast(sbLocationData.toString());
} else {
Toast.makeText(this, R.string.unable_to_find_location, Toast.LENGTH_SHORT).show();
}
}
/**
* Send broadcast using LocalBroadcastManager to update UI in activity
*
* @param sbLocationData
*/
private void sendLocationBroadcast(String sbLocationData) {
Log.d(TAG, "sendLocationBroadcast() called");
Intent locationIntent = new Intent();
locationIntent.setAction(LOACTION_ACTION);
locationIntent.putExtra(LOCATION_MESSAGE, sbLocationData);
LocalBroadcastManager.getInstance(this).sendBroadcast(locationIntent);
}
/**
* Removes location updates from the FusedLocationApi.
*/
protected void stopLocationUpdates() {
Log.d(TAG, "stopLocationUpdates() called");
LocationServices.FusedLocationApi.removeLocationUpdates(mGoogleApiClient, this);
}
@Override
public void onDestroy() {
Log.d(TAG, "onDestroy() called");
appPreferences.putFloat(PREF_DISTANCE, distance);
stopLocationUpdates();
mGoogleApiClient.disconnect();
Log.d(TAG, "onDestroy Distance " + distance);
super.onDestroy();
}
/**
* Runs when a GoogleApiClient object successfully connects.
*/
@Override
public void onConnected(Bundle connectionHint) throws SecurityException {
Log.i(TAG, "Connected to GoogleApiClient");
if (mCurrentLocation == null) {
mCurrentLocation = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient);
mLastUpdateTime = DateFormat.getTimeInstance().format(new Date());
updateUI();
}
startLocationUpdates();
}
/**
* Callback that fires when the location changes.
*/
@Override
public void onLocationChanged(Location location) {
Log.d(TAG, "onLocationChanged() called");
mCurrentLocation = location;
mLastUpdateTime = DateFormat.getTimeInstance().format(new Date());
updateUI();
}
@Override
public void onConnectionSuspended(int cause) {
Log.d(TAG, "onConnectionSuspended() called");
mGoogleApiClient.connect();
}
@Override
public void onConnectionFailed(ConnectionResult result) {
Log.i(TAG, "Connection failed: ConnectionResult.getErrorCode() = " + result.getErrorCode());
}
private float getUpdatedDistance() {
/**
* There is 68% chance that user is with in 100m from this location.
* So neglect location updates with poor accuracy
*/
if (mCurrentLocation.getAccuracy() > ACCURACY_THRESHOLD) {
Log.d(TAG, "getUpdatedDistance() called");
return distance;
}
if (oldLocation.getLatitude() == 0 && oldLocation.getLongitude() == 0) {
oldLocation.setLatitude(mCurrentLocation.getLatitude());
oldLocation.setLongitude(mCurrentLocation.getLongitude());
newLocation.setLatitude(mCurrentLocation.getLatitude());
newLocation.setLongitude(mCurrentLocation.getLongitude());
return distance;
} else {
oldLocation.setLatitude(newLocation.getLatitude());
oldLocation.setLongitude(newLocation.getLongitude());
newLocation.setLatitude(mCurrentLocation.getLatitude());
newLocation.setLongitude(mCurrentLocation.getLongitude());
}
/**
* Calculate distance between last two geo locations
*/
distance += newLocation.distanceTo(oldLocation);
return distance;
}
@Override
public IBinder onBind(Intent intent) {
throw new UnsupportedOperationException("Not yet implemented");
}
}
表现
Android清单声明
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.technosavy.showmedistance">
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity
android:name=".ShowDistanceActivity"
android:label="@string/app_name"
android:theme="@style/AppTheme.NoActionBar">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<service
android:name=".service.LocationService"
android:enabled="true"
android:exported="true"></service>
</application>
</manifest>
请任何帮助.
解决方法:
要删除GPS图标,您需要使用缓存的和Wi-Fi位置设置(来自内存).在您的代码中进行以下更改.
在清单中,删除：
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
在服务中,更改以下内容：
mLocationRequest.setInterval(10000L);
mLocationRequest.setFastestInterval(5000L);
// Do NOT use LocationRequest.PRIORITY_HIGH_ACCURACY here
// Instead use one of the other option.
mLocationRequest.setPriority(LocationRequest.PRIORITY_BALANCED_POWER_ACCURACY);
//mLocationRequest.setPriority(LocationRequest.PRIORITY_LOW_POWER);
//mLocationRequest.setPriority(LocationRequest.PRIORITY_NO_POWER);
// Remove setSmallestDisplacement() as it should not be used
// unless you are using a GPS / PRIORITY_HIGH_ACCURACY
//mLocationRequest.setSmallestDisplacement(DISPLACEMENT);
可以肯定的是,这将删除GPS图标,但在调用onConnected()方法时,您也只会获得FusedLocationApi.getLastLocation()值(这很可能会降低精度).
onLocationChanged()方法可能永远不会触发,直到另一个应用程序以更高的优先级或更高的精度发出位置请求为止.
标签：google-api-client,android-service,android-gps,android-googleapiclient,android 来源： https://codeday.me/bug/20191110/2015514.html