[英]Google play services location listener not being called but program still needs it to work?
因此,正如我在問題中指出的那樣,我正在實現位置服務(不是Google的android版本),並且正在嘗試從方法中吐司,以查看它是否被調用,但是我沒有任何運氣。 如果我將其刪除,盡管在此行出現錯誤,因此無法請求位置更新
LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, mLocationRequest, this);
是位置偵聽器庫的一部分嗎? 我只是不明白為什么當我更改位置時應用程序不會舉杯。 我做了很多研究,但找不到答案,所以我在這里問。 它在我的handleNewLocation方法中選擇一個位置並烘烤緯度。
這是我的代碼
package com.example.mick.mylocation;
import android.app.Activity;
import android.content.IntentSender;
import android.location.Location;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.util.Log;
import android.widget.Button;
import android.widget.Toast;
import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.location.LocationListener;
import com.google.android.gms.location.LocationRequest;
import com.google.android.gms.location.LocationServices;
import com.google.android.gms.maps.GoogleMap;
public class MainActivity extends Activity implements
GoogleApiClient.ConnectionCallbacks,
GoogleApiClient.OnConnectionFailedListener,
LocationListener
{
private final static int CONNECTION_FAILURE_RESOLUTION_REQUEST = 9000;
private LocationRequest mLocationRequest;
private GoogleApiClient mGoogleApiClient;
public static final String TAG = MainActivity.class.getSimpleName();
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mLocationRequest = LocationRequest.create()
.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY)
.setInterval(10 * 1000) // 10 seconds, in milliseconds
.setFastestInterval(1 * 1000); // 1 second, in milliseconds
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build();
}
@Override
protected void onResume() {
super.onResume();
mGoogleApiClient.connect();
}
@Override
protected void onPause() {
Toast.makeText(getApplicationContext(),"PAUSED ", Toast.LENGTH_LONG).show();
super.onPause();
if (mGoogleApiClient.isConnected()) {
LocationServices.FusedLocationApi.removeLocationUpdates(mGoogleApiClient, this);
mGoogleApiClient.disconnect();
}
}
@Override
public void onConnected(@Nullable Bundle bundle) {
Toast.makeText(getApplicationContext(), "Location services conntected", Toast.LENGTH_LONG).show();
Location location = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient);
if (location == null) {
LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, mLocationRequest, this);
} else {
handleNewLocation(location);
}
}
private void handleNewLocation(Location location) {
Toast.makeText(getApplicationContext(),"HANNDLE NEW LOCATION METHOD lat is "+location.getLatitude(), Toast.LENGTH_LONG).show();
}
@Override
public void onConnectionSuspended(int i) {
Toast.makeText(getApplicationContext(),"SUSPENDED", Toast.LENGTH_LONG).show();
}
@Override
public void onConnectionFailed(@NonNull ConnectionResult connectionResult) {
if (connectionResult.hasResolution()) {
try {
// Start an Activity that tries to resolve the error
connectionResult.startResolutionForResult(this, CONNECTION_FAILURE_RESOLUTION_REQUEST);
} catch (IntentSender.SendIntentException e) {
e.printStackTrace();
}
} else {
Log.i(TAG, "Location services connection failed with code " + connectionResult.getErrorCode());
Toast.makeText(getApplicationContext(),"Location services connection failed with code " + connectionResult.getErrorCode(), Toast.LENGTH_LONG).show();
}
}
@Override
public void onLocationChanged(Location location) {
Toast.makeText(getApplicationContext(),"ON LOCATION CHANGED METHOD", Toast.LENGTH_LONG).show();
// handleNewLocation(location);
}
}
謝謝
我的猜測是,您永遠不會在onConnect()
執行第一個requestLocationUpdates()
onConnect()
。 僅僅因為您是新連接的,並不意味着getLastLocation()
將為null。 實際上,您希望不會這樣,以便盡快更新顯示。
嘗試這個:
if (location != null) {
handleNewLocation(location);
}
LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, mLocationRequest, this);
每次連接時發送新的requestLocationUpdates()
都沒有問題。 (實際上,我認為如果配置更改導致您斷開並重新連接到GoogleApiClient,則需要發送新請求)
如果您是我,則可以使用ReactiveLocation避免不必要的樣板工作以及與googleApiClients交往的麻煩:
public class MainActivity extends Activity {
public static final String TAG = MainActivity.class.getSimpleName();
private Subscription subscription;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mLocationRequest = LocationRequest.create()
.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY)
.setInterval(10 * 1000) // 10 seconds, in milliseconds
.setFastestInterval(1 * 1000); // 1 second, in milliseconds
ReactiveLocationProvider locationProvider = new ReactiveLocationProvider(context);
subscription = locationProvider.getUpdatedLocation(mLocationRequest)
.subscribe(new Action1<Location>() {
@Override
public void call(Location location) {
//This will be called every time a new location is received
Toast.makeText(getApplicationContext(), "Location updated", Toast.LENGTH_LONG).show();
}
});
}
@Override
public void onPause() {
//Make sure to stop listening for updates when you don't need them anymore
subscription.unsubscribe();
}
}
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