无法从开发人员Google收到来自OnLocationChanged代码段代码的更新我之后只调用了getlastknown位置，Interval无法正常工作，无法添加UpdateLocationRequest
import android.Manifest;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.content.IntentSender;
import android.content.pm.PackageManager;
import android.location.Address;
import android.location.Geocoder;
import android.location.Location;
import android.location.LocationManager;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.v4.app.ActivityCompat;
import android.support.v4.app.FragmentActivity;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.GoogleApiAvailability;
import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.common.api.PendingResult;
import com.google.android.gms.common.api.ResultCallback;
import com.google.android.gms.common.api.Status;
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.location.LocationSettingsRequest;
import com.google.android.gms.location.LocationSettingsResult;
import com.google.android.gms.location.LocationSettingsStatusCodes;
import java.text.DateFormat;
import java.util.Date;
import java.util.List;
import java.util.Locale;
import java.util.Timer;
import java.util.TimerTask;
import static android.widget.Toast.LENGTH_SHORT;
public class FusedLocationWithSettingsDialog extends FragmentActivity implements GoogleApiClient.ConnectionCallbacks,
GoogleApiClient.OnConnectionFailedListener,
LocationListener,
ResultCallback<LocationSettingsResult> {
private Button btn_location;
private TextView txt_location;
protected TextView mLastUpdateTimeTextView;
protected TextView mLatitudeTextView;
protected TextView mLongitudeTextView;
protected TextView tv_pincode, tv_city;
protected static final String TAG = "MainActivity";
public static final int REQUEST_PERMISSION_LOCATION = 10;
private static final long MIN_TIME = 2000;
private static final float MIN_DISTANCE = 10;
protected static final int REQUEST_CHECK_SETTINGS = 0x1;
public static final long UPDATE_INTERVAL_IN_MILLISECONDS = 500;
public static final long FASTEST_UPDATE_INTERVAL_IN_MILLISECONDS =
UPDATE_INTERVAL_IN_MILLISECONDS / 2;
protected GoogleApiClient mGoogleApiClient;
protected LocationRequest mLocationRequest;
protected LocationSettingsRequest mLocationSettingsRequest;
protected Location mCurrentLocation;
protected String mLatitudeLabel;
protected String mLongitudeLabel;
protected String mLastUpdateTimeLabel;
protected Boolean mRequestingLocationUpdates;
protected String mLastUpdateTime;
int RQS_GooglePlayServices = 0;
@Override
protected void onStart() {
super.onStart();
GoogleApiAvailability googleAPI = GoogleApiAvailability.getInstance();
int resultCode = googleAPI.isGooglePlayServicesAvailable(this);
if (resultCode == ConnectionResult.SUCCESS) {
mGoogleApiClient.connect();
} else {
googleAPI.getErrorDialog(this, resultCode, RQS_GooglePlayServices);
}
}
@Override
protected void onResume() {
super.onResume();
if (mGoogleApiClient.isConnected() && mRequestingLocationUpdates) {
startLocationUpdates();
}
}
@Override
protected void onPause() {
super.onPause();
if (mGoogleApiClient.isConnected()) {
stopLocationUpdates();
}
}
@Override
protected void onStop() {
super.onStop();
mGoogleApiClient.disconnect();
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.layout_fused_location);
btn_location = (Button) findViewById(R.id.btn_detect_fused_location);
txt_location = (TextView) findViewById(R.id.txt_location);
mLatitudeTextView = (TextView) findViewById(R.id.mLatitudeTextView);
mLongitudeTextView = (TextView) findViewById(R.id.mLongitudeTextView);
mLastUpdateTimeTextView = (TextView) findViewById(R.id.mLastUpdateTimeTextView);
tv_city = (TextView) findViewById(R.id.tv_city);
tv_pincode = (TextView) findViewById(R.id.tv_pincode);
mLatitudeLabel = getResources().getString(R.string.latitude_label);
mLongitudeLabel = getResources().getString(R.string.longitude_label);
mLastUpdateTimeLabel = getResources().getString(R.string.last_update_time_label);
mRequestingLocationUpdates = false;
mLastUpdateTime = "";
buildGoogleApiClient();
createLocationRequest();
buildLocationSettingsRequest();
btn_location.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
checkLocationSettings();
}
});
}
protected synchronized void buildGoogleApiClient() {
Log.i(TAG, "Building GoogleApiClient");
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build();
}
protected void createLocationRequest() {
mLocationRequest = new LocationRequest();
mLocationRequest.setInterval(UPDATE_INTERVAL_IN_MILLISECONDS);
mLocationRequest.setFastestInterval(FASTEST_UPDATE_INTERVAL_IN_MILLISECONDS);
mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
}
protected void buildLocationSettingsRequest() {
LocationSettingsRequest.Builder builder = new LocationSettingsRequest.Builder();
builder.addLocationRequest(mLocationRequest);
mLocationSettingsRequest = builder.build();
}
protected void checkLocationSettings() {
PendingResult<LocationSettingsResult> result =
LocationServices.SettingsApi.checkLocationSettings(
mGoogleApiClient,
mLocationSettingsRequest
);
result.setResultCallback(this);
}
protected void startLocationUpdates() {
if (ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
ActivityCompat.requestPermissions(this, new String[]{android.Manifest.permission.ACCESS_FINE_LOCATION}, REQUEST_PERMISSION_LOCATION);
} else {
goAndDetectLocation();
}
}
public void goAndDetectLocation() {
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
// TODO: Consider calling
// ActivityCompat#requestPermissions
// here to request the missing permissions, and then overriding
// public void onRequestPermissionsResult(int requestCode, String[] permissions,
// int[] grantResults)
// to handle the case where the user grants the permission. See the documentation
// for ActivityCompat#requestPermissions for more details.
return;
}
LocationServices.FusedLocationApi.requestLocationUpdates(
mGoogleApiClient,
mLocationRequest,
this
).setResultCallback(new ResultCallback<Status>() {
@Override
public void onResult(Status status) {
mRequestingLocationUpdates = true;
}
});
}
protected void stopLocationUpdates() {
LocationServices.FusedLocationApi.removeLocationUpdates(
mGoogleApiClient,
this
).setResultCallback(new ResultCallback<Status>() {
@Override
public void onResult(Status status) {
mRequestingLocationUpdates = false;
}
});
}
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
switch (requestCode) {
case REQUEST_PERMISSION_LOCATION:
if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
goAndDetectLocation();
}
break;
}
}
@Override
public void onConnected(Bundle bundle) {
Log.i(TAG, "Connected to GoogleApiClient");
if (mCurrentLocation == null) {
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
// TODO: Consider calling
// ActivityCompat#requestPermissions
// here to request the missing permissions, and then overriding
// public void onRequestPermissionsResult(int requestCode, String[] permissions,
// int[] grantResults)
// to handle the case where the user grants the permission. See the documentation
// for ActivityCompat#requestPermissions for more details.
return;
}
mCurrentLocation = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient);
mLastUpdateTime = DateFormat.getTimeInstance().format(new Date());
startLocationUpdates();
updateLocationUI();
}
}
@Override
public void onConnectionSuspended(int cause) {
Log.i(TAG, "Connection suspended");
}
@Override
public void onLocationChanged(Location location) {
mCurrentLocation = location;
mLastUpdateTime = DateFormat.getTimeInstance().format(new Date());
updateLocationUI();
Toast.makeText(this, getResources().getString(R.string.location_updated_message),
LENGTH_SHORT).show();
}
@Override
public void onConnectionFailed(ConnectionResult connectionResult) {
Log.i(TAG, "Connection failed: ConnectionResult.getErrorCode() = " + connectionResult.getErrorCode());
}
@Override
public void onResult(LocationSettingsResult locationSettingsResult) {
final Status status = locationSettingsResult.getStatus();
switch (status.getStatusCode()) {
case LocationSettingsStatusCodes.SUCCESS:
Log.i(TAG, "All location settings are satisfied.");
Toast.makeText(FusedLocationWithSettingsDialog.this, "Location is already on.", LENGTH_SHORT).show();
startLocationUpdates();
break;
case LocationSettingsStatusCodes.RESOLUTION_REQUIRED:
Log.i(TAG, "Location settings are not satisfied. Show the user a dialog to" +
"upgrade location settings ");
try {
Toast.makeText(FusedLocationWithSettingsDialog.this, "Location dialog will be open", LENGTH_SHORT).show();
status.startResolutionForResult(FusedLocationWithSettingsDialog.this, REQUEST_CHECK_SETTINGS);
} catch (IntentSender.SendIntentException e) {
Log.i(TAG, "PendingIntent unable to execute request.");
}
break;
case LocationSettingsStatusCodes.SETTINGS_CHANGE_UNAVAILABLE:
Log.i(TAG, "Location settings are inadequate, and cannot be fixed here. Dialog " +
"not created.");
break;
}
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
switch (requestCode) {
case REQUEST_CHECK_SETTINGS:
switch (resultCode) {
case Activity.RESULT_OK:
Log.i(TAG, "User agreed to make required location settings changes.");
startLocationUpdates();
break;
case Activity.RESULT_CANCELED:
Log.i(TAG, "User chose not to make required location settings changes.");
break;
}
break;
}
}
private void updateLocationUI() {
if (mCurrentLocation != null) {
mLatitudeTextView.setText(String.format("%s: %f", mLatitudeLabel,
mCurrentLocation.getLatitude()));
mLongitudeTextView.setText(String.format("%s: %f", mLongitudeLabel,
mCurrentLocation.getLongitude()));
mLastUpdateTimeTextView.setText(String.format("%s: %s", mLastUpdateTimeLabel,
mLastUpdateTime));
updateCityAndPincode(mCurrentLocation.getLatitude(), mCurrentLocation.getLongitude());
}
}
private void updateCityAndPincode(double latitude, double longitude) {
try {
Geocoder gcd = new Geocoder(FusedLocationWithSettingsDialog.this, Locale.getDefault());
List<Address> addresses = gcd.getFromLocation(latitude, longitude, 1);
if (addresses.size() > 0) {
tv_city.setText("City=" + addresses.get(0).getLocality());
tv_pincode.setText("Pincode=" + addresses.get(0).getPostalCode());
// System.out.println(addresses.get(0).getLocality());
}
} catch (Exception e) {
Log.e(TAG, "exception:" + e.toString());
}
}
}
XML
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_margin="20dp">
<Button
android:id="@+id/btn_detect_fused_location"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Detect location"
/>
<TextView
android:id="@+id/txt_location"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="18sp"
android:layout_marginTop="10dp"/>
<TextView
android:id="@+id/mLatitudeTextView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="18sp"/>
<TextView
android:id="@+id/mLongitudeTextView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="18sp"/>
<TextView
android:id="@+id/mLastUpdateTimeTextView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="18sp"/>
<TextView
android:id="@+id/tv_city"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="18sp"/>
<TextView
android:id="@+id/tv_pincode"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="18sp"/>
</LinearLayout>