Android检查用户是否关闭位置 [英] android check if user turned off location
问题描述
我正在构建一个应用程序,在该应用程序中,我必须不断保存用户的位置,然后将其发送到服务器.为此,我在服务中使用FusedLocationApis.这是我第一次要求用户打开位置信息. 运行良好.
I am building an application in which I have to constantly save user's location and then send it to the server. For that, I am using FusedLocationApis in a service. For the first time, I am asking user to turn on locations. It is working perfectly.
现在,如果用户无意中关闭了位置,该怎么办.我该如何通知他?开发人员是否必须照顾这一点,或者只是将其留给用户?
Now, what if the user unintentionally turns off the location. How should I inform him? Do developers have to take care of this or they just leave it to the user?
我想为此给他一个机器人通知.为此,我需要不断检查服务中启用的位置.我有一个适用的代码(功能checkHighAccuracyLocationMode).但是我应该在哪里进行检查(checkHighAccuracyLocationMode)? 每次在此服务中启用哪个功能?还是如果我能获得一个在用户关闭其位置时启动的功能?
I thought of giving him an android notification for this. For that, I need to constantly check our locations enabled in the service. I have a working code for that (function checkHighAccuracyLocationMode). But where should I do this check (checkHighAccuracyLocationMode) ? Which function is fired up every time in this service? Or If anyhow I can get a function that fires up when the user turned off his locations?
这是我的服务:
public class locationUpdatesService extends Service implements
GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener, LocationListener {
private Location mLastLocation;
private Location mCurrentLocation;
private String mLastUpdateTime;
private dataBaseHandler db_helper;
@Override
public int onStartCommand(Intent intent, int flags, int startId){
initialise();
return super.onStartCommand(intent, flags, startId);
}
@Override
public void onCreate() {
super.onCreate();
db_helper = new dataBaseHandler(getApplicationContext(),dataBaseHandler.DATABASE_NAME,null,1);
}
@Override
public void onDestroy() {
stopLocationUpdates();
singletGoogleClientApi.setinstancenull();
singletLocationRequest.setinstancenull();
super.onDestroy();
}
@Nullable
@Override
public IBinder onBind(Intent intent) {
return null;
}
private void initialise(){
Log.e("ghgdhu","qaws");
if (singletGoogleClientApi.getinstance().getGoogleApiCLient() == null) {
singletGoogleClientApi.getinstance().setmSingletGoogleApiClient(new GoogleApiClient.Builder(this)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build());
singletGoogleClientApi.getinstance().getGoogleApiCLient().connect();
createLocationRequest();
}
if(!singletGoogleClientApi.getinstance().getGoogleApiCLient().isConnected()){
singletGoogleClientApi.getinstance().getGoogleApiCLient().connect();
createLocationRequest();
}
}
protected void createLocationRequest() {
if(singletLocationRequest.getinstance().getLocationRequest() == null) {
singletLocationRequest.getinstance().setSingletLocationRequest(new LocationRequest()
.setInterval(10000)
.setFastestInterval(5000).setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY));
}
}
public static boolean checkHighAccuracyLocationMode(Context context) {
int locationMode = 0;
String locationProviders;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT){
//Equal or higher than API 19/KitKat
try {
locationMode = Settings.Secure.getInt(context.getContentResolver(), Settings.Secure.LOCATION_MODE);
if (locationMode == Settings.Secure.LOCATION_MODE_HIGH_ACCURACY){
return true;
}
} catch (Settings.SettingNotFoundException e) {
e.printStackTrace();
}
}else{
//Lower than API 19
locationProviders = Settings.Secure.getString(context.getContentResolver(), Settings.Secure.LOCATION_PROVIDERS_ALLOWED);
if (locationProviders.contains(LocationManager.GPS_PROVIDER) && locationProviders.contains(LocationManager.NETWORK_PROVIDER)){
return true;
}
}
return false;
}
@Override
public void onLocationChanged(Location location) {
Log.e("qazxsw","inONLocationCHanged");
mCurrentLocation = location;
Log.e("loc : ",Double.toString(mCurrentLocation.getLatitude()));
Toast.makeText(this, "My Location: "+Double.toString(mCurrentLocation.getLatitude())+ " , " + Double.toString(mCurrentLocation.getLongitude()),
Toast.LENGTH_SHORT).show();
mLastUpdateTime = DateFormat.getTimeInstance().format(new Date());
if(!checkHighAccuracyLocationMode(getBaseContext())){
Log.e("turned OFF","LOCATION");
}
else {
Log.e("ONNNNN","LOCATION");
}
db_helper.Insert(mLastUpdateTime,mCurrentLocation.getLatitude(),mCurrentLocation.getLongitude());
}
protected void stopLocationUpdates() {
LocationServices.FusedLocationApi.removeLocationUpdates(singletGoogleClientApi.
getinstance().getGoogleApiCLient(), this);
}
@Override
public void onConnected(@Nullable Bundle bundle) {
startLocationUpdates();
}
protected void startLocationUpdates() {
try {
if(singletLocationRequest.getinstance().getLocationRequest()!=null &&
singletGoogleClientApi.getinstance().getGoogleApiCLient()!=null){
Log.e("requesting","yES BRO");
LocationServices.FusedLocationApi.requestLocationUpdates(
singletGoogleClientApi.getinstance().getGoogleApiCLient(), singletLocationRequest.getinstance().getLocationRequest(), this);
mLastLocation = LocationServices.FusedLocationApi.getLastLocation(
singletGoogleClientApi.getinstance().getGoogleApiCLient());
}
else {
initialise();
}
}
catch (SecurityException e) {
e.getStackTrace();
}
}
@Override
public void onConnectionSuspended(int i) {
Log.e("ON CONNECTION SUSPENDED","PETROL");
}
@Override
public void onConnectionFailed(@NonNull ConnectionResult connectionResult) {
Log.e("COnnection ","DIESEL");
}
}
推荐答案
您可以使用位置状态更改后的receiver
来了解用户何时手动旋转位置
GpsReceiver.java
You can use location state changed receiver
to know when user manually turns of location
GpsReceiver.java
public class GpsReceiver extends BroadcastReceiver {
private final LocationCallBack locationCallBack;
/**
* initializes receiver with callback
* @param iLocationCallBack Location callback
*/
public GpsReceiver(LocationCallBack iLocationCallBack){
this.locationCallBack = iLocationCallBack;
}
/**
* triggers on receiving external broadcast
* @param context Context
* @param intent Intent
*/
@Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().matches("android.location.PROVIDERS_CHANGED")) {
locationCallBack.onLocationTriggered();
}
}
}
创建一个interface
以便将GPS更改传达给Activity
Create an interface
to communicate GPS changes to Activity
public interface LocationCallBack {
/**
* on Location switch triggered
*/
void onLocationTriggered();
}
在Activity
的onCreate()
中注册receiver
以开始收听GPS状态更改
Register receiver
in onCreate()
of Activity
to start listening to GPS state changes
public void onCreate(Bundle savedInstance){
//---
registerReceiver(new GpsReceiver(new LocationCallBack() {
@Override
public void onLocationTriggered() {
//Location state changed
}
}), new IntentFilter(LocationManager.PROVIDERS_CHANGED_ACTION));
//---
}
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