GoogleApiClient：当服务在后台时，在状态栏上隐藏 GPS 图标
GoogleApiClient: hide GPS icon on status bar when a service is in the background
我正在使用 GoogleApiClient 实现位置侦听器服务，但 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？
关注以下来源：
Activity
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");
}
}
清单
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>
拜托，欢迎任何帮助。
要删除 GPS 图标，您需要使用缓存和 Wi-Fi 位置设置（从内存中）。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);
很确定这会删除 GPS 图标，但您也只会在调用 onConnected() 方法时获得 FusedLocationApi.getLastLocation() 值（这很可能是低精度）。
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准确的方式发出位置请求。
与以前的方法相比，新的融合位置提供程序采用的方法略有不同。开发人员现在选择使用多少电池电量来计算位置，而不是使用哪些设备组件来计算位置。它使用 GPS、Wi-Fi、移动网络和机载传感器的任何可用组合来计算位置。
LocationRequest 优先级设置现在是：
PRIORITY_NO_POWER（被动监听来自其他客户端的位置更新）
PRIORITY_LOW_POWER（~10km "city" 精度）
PRIORITY_BALANCED_POWER_ACCURACY（~100m "block" 精度）
PRIORITY_HIGH_ACCURACY（以电池寿命为代价尽可能准确）
Google 在此处描述 LocationRequest class：http://developer.android.com/reference/com/google/android/gms/location/LocationRequest.html
我正在使用 GoogleApiClient 实现位置侦听器服务，但 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？
关注以下来源：
Activity
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");
}
}
清单
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>
拜托，欢迎任何帮助。
要删除 GPS 图标，您需要使用缓存和 Wi-Fi 位置设置（从内存中）。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);
很确定这会删除 GPS 图标，但您也只会在调用 onConnected() 方法时获得 FusedLocationApi.getLastLocation() 值（这很可能是低精度）。
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准确的方式发出位置请求。
与以前的方法相比，新的融合位置提供程序采用的方法略有不同。开发人员现在选择使用多少电池电量来计算位置，而不是使用哪些设备组件来计算位置。它使用 GPS、Wi-Fi、移动网络和机载传感器的任何可用组合来计算位置。
LocationRequest 优先级设置现在是：
PRIORITY_NO_POWER（被动监听来自其他客户端的位置更新） PRIORITY_LOW_POWER（~10km "city" 精度） PRIORITY_BALANCED_POWER_ACCURACY（~100m "block" 精度） PRIORITY_HIGH_ACCURACY（以电池寿命为代价尽可能准确） Google 在此处描述 LocationRequest class：http://developer.android.com/reference/com/google/android/gms/location/LocationRequest.html