获取GPS跟踪器服务位置的代码
import android.Manifest;
import android.app.Activity;
import android.app.Service;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.IntentSender;
import android.content.pm.PackageManager;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.os.IBinder;
import android.provider.Settings;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AlertDialog;
import android.util.Log;
import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.common.api.PendingResult;
import com.google.android.gms.common.api.Result;
import com.google.android.gms.common.api.ResultCallback;
import com.google.android.gms.common.api.Status;
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.LocationSettingsStatusCodes;
import java.security.Provider;
public class GPSTracker extends Service
implements LocationListener, GoogleApiClient.OnConnectionFailedListener, GoogleApiClient.ConnectionCallbacks {
private final Context mContext;
// Flag for GPS status
boolean isGPSEnabled = false;
// Flag for network status
boolean isNetworkEnabled = false;
// Flag for GPS status
boolean canGetLocation = false;
Location location; // Location
double latitude; // Latitude
double longitude; // Longitude
// The minimum distance to change Updates in meters
private static final long MIN_DISTANCE_CHANGE_FOR_UPDATES = 10; // 10 meters
// The minimum time between updates in milliseconds
private static final long MIN_TIME_BW_UPDATES = 1000 * 60 * 1; // 1 minute
// Declaring a Location Manager
protected LocationManager locationManager;
GoogleApiClient googleApiClient;
private Location mylocation;
private final static int REQUEST_CHECK_SETTINGS_GPS = 0x1;
public GPSTracker(Context context) {
this.mContext = context;
setUpGClient();
getLocation();
}
/*Function for setting up Googleapiclient*/
private void setUpGClient() {
googleApiClient = new GoogleApiClient.Builder(mContext)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build();
googleApiClient.connect();
}
/*Function use to gett location*/
public Location getLocation() {
try {
locationManager = (LocationManager) mContext
.getSystemService(LOCATION_SERVICE);
// Getting GPS status
isGPSEnabled = locationManager
.isProviderEnabled(LocationManager.GPS_PROVIDER);
// Getting network status
isNetworkEnabled = locationManager
.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
if (!isGPSEnabled && !isNetworkEnabled) {
// No network provider is enabled
} else {
this.canGetLocation = true;
if (isNetworkEnabled) {
locationManager.requestLocationUpdates(
LocationManager.NETWORK_PROVIDER,
MIN_TIME_BW_UPDATES,
MIN_DISTANCE_CHANGE_FOR_UPDATES, this);
Log.d("Network", "Network");
if (locationManager != null) {
location = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
if (location != null) {
latitude = location.getLatitude();
longitude = location.getLongitude();
}
}
}
// If GPS enabled, get latitude/longitude using GPS Services
if (isGPSEnabled) {
if (location == null) {
locationManager.requestLocationUpdates(
LocationManager.GPS_PROVIDER,
MIN_TIME_BW_UPDATES,
MIN_DISTANCE_CHANGE_FOR_UPDATES, this);
Log.d("GPS Enabled", "GPS Enabled");
if (locationManager != null) {
location = locationManager
.getLastKnownLocation(LocationManager.GPS_PROVIDER);
if (location != null) {
latitude = location.getLatitude();
longitude = location.getLongitude();
}
}
}
}
}
} catch (Exception e) {
e.printStackTrace();
}
return location;
}
/**
* Stop using GPS listener
* Calling this function will stop using GPS in your app.
*/
public void stopUsingGPS() {
if (locationManager != null) {
locationManager.removeUpdates(GPSTracker.this);
}
}
/* Function to get latitude*/
public double getLatitude() {
if (location != null) {
latitude = location.getLatitude();
}
// return latitude
return latitude;
}
/*Function to get longitude */
public double getLongitude() {
if (location != null) {
longitude = location.getLongitude();
}
// return longitude
return longitude;
}
/* Function to check GPS/Wi-Fi enabled @return boolean */
public boolean canGetLocation() {
return this.canGetLocation;
}
/**
* Function to show settings alert dialog.
* On pressing the Settings button it will launch Settings Options.
*/
public void showSettingsAlert() {
AlertDialog.Builder alertDialog = new AlertDialog.Builder(mContext);
// Setting Dialog Title
alertDialog.setTitle("GPS settings");
// Setting Dialog Message
alertDialog.setMessage("GPS is not enabled. Do you want to go to settings menu?");
// On pressing the Settings button.
alertDialog.setPositiveButton("Settings", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
mContext.startActivity(intent);
}
});
// On pressing the cancel button
alertDialog.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
}
});
// Showing Alert Message
alertDialog.show();
}
/*Function shows the dialogue to Automatic turn on the location */
public void autoTurnOnGPS() {
mylocation = LocationServices.FusedLocationApi.getLastLocation(googleApiClient);
LocationRequest locationRequest = new LocationRequest();
locationRequest.setInterval(3000);
locationRequest.setFastestInterval(3000);
locationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
LocationSettingsRequest.Builder builder = new LocationSettingsRequest.Builder()
.addLocationRequest(locationRequest);
builder.setAlwaysShow(true);
/*
LocationServices.FusedLocationApi
.requestLocationUpdates(googleApiClient, locationRequest, (LocationListener) this);
*/
PendingResult result =
LocationServices.SettingsApi
.checkLocationSettings(googleApiClient, builder.build());
result.setResultCallback(new ResultCallback() {
@Override
public void onResult(@NonNull Result result) {
final Status status = result.getStatus();
switch (status.getStatusCode()) {
case LocationSettingsStatusCodes.SUCCESS:
// All location settings are satisfied.
// You can initialize location requests here.
int permissionLocation = ContextCompat
.checkSelfPermission(mContext,
Manifest.permission.ACCESS_FINE_LOCATION);
if (permissionLocation == PackageManager.PERMISSION_GRANTED) {
mylocation = LocationServices.FusedLocationApi
.getLastLocation(googleApiClient);
}
break;
case LocationSettingsStatusCodes.RESOLUTION_REQUIRED:
// Location settings are not satisfied.
// But could be fixed by showing the user a dialog.
try {
// Show the dialog by calling startResolutionForResult(),
// and check the result in onActivityResult().
// Ask to turn on GPS automatically
status.startResolutionForResult((Activity) mContext,
REQUEST_CHECK_SETTINGS_GPS);
} catch (IntentSender.SendIntentException e) {
// Ignore the error.
}
break;
case LocationSettingsStatusCodes.SETTINGS_CHANGE_UNAVAILABLE:
// Location settings are not satisfied. However, we have no way to fix the
// settings so we won't show the dialog.
//finish();
break;
}
}
});
}
@Override
public void onLocationChanged(Location location) {
}
@Override
public void onProviderDisabled(String provider) {
}
@Override
public void onProviderEnabled(String provider) {
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
}
@Override
public IBinder onBind(Intent arg0) {
return null;
}
@Override
public void onConnected(@Nullable Bundle bundle) {
}
@Override
public void onConnectionSuspended(int i) {
}
@Override
public void onConnectionFailed(@NonNull ConnectionResult connectionResult) {
}
}
调用GPS追踪服务的方法代码
public static String googleLiveLocation(Context context) {
gps = new GPSTracker(context);
// Check if GPS enabled
String LatLon_current = null;
if (gps.canGetLocation()) {
Location location = gps.getLocation();
while (location == null) {
location = gps.getLocation();
if (location != null)
break;
}
if (location != null) {
double latitude = gps.getLatitude();
double longitude = gps.getLongitude();
String latitude_s = Double.toString(latitude);
String lon = Double.toString(longitude);
LatLon_current = latitude_s + ":" + lon;
}
} else {
gps.autoTurnOnGPS();
}
return LatLon_current;
}
点击按钮的代码
if (ContextCompat.checkSelfPermission
(context, android.Manifest.permission.ACCESS_FINE_LOCATION)
== PackageManager.PERMISSION_GRANTED &&
ContextCompat.checkSelfPermission(context, android.Manifest.permission.ACCESS_COARSE_LOCATION)
== PackageManager.PERMISSION_GRANTED) {
final String LatLon_current = CommonMethods.googleLiveLocation(context);
if (LatLon_current != null) {
builder = new AlertDialog.Builder(this, AlertDialog.THEME_HOLO_LIGHT);
builder.setMessage(getResources().getString(R.string.start_attendance))
.setTitle("Confirm!")
.setIcon(R.drawable.nabu)
.setCancelable(true)
.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
})
.setNeutralButton(android.R.string.ok,
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog,
int whichButton) {
callStartTimer(LatLon_current);
dialog.dismiss();
}
}).show();
}
} else {
ActivityCompat.requestPermissions(AttendanceMarkActivity.this,
new String[]{android.Manifest.permission.ACCESS_FINE_LOCATION,
android.Manifest.permission.ACCESS_COARSE_LOCATION},
TAG_CODE_PERMISSION_LOCATION);
}
Android无响应错误
"main" prio=5 tid=1 Native
| group="main" sCount=1 dsCount=0 obj=0x7556e000 self=0xaad95f18
| sysTid=4764 nice=0 cgrp=default sched=0/0 handle=0x4000fbec
| state=S schedstat=( 6512778158 5383102303 26014 ) utm=517 stm=134 core=2 HZ=100
| stack=0xff000000-0xff002000 stackSize=8MB
| held mutexes=
#00 pc 0000000000012974 /system/lib/libc.so (syscall+28)
#01 pc 00000000000aecf7 /system/lib/libart.so (_ZN3art17ConditionVariable4WaitEPNS_6ThreadE+82)
#02 pc 0000000000291e41 /system/lib/libart.so (_ZN3artL12GoToRunnableEPNS_6ThreadE+772)
#03 pc 000000000008c8c1 /system/lib/libart.so (_ZN3art12JniMethodEndEjPNS_6ThreadE+8)
#04 pc 0000000000c66011 /system/framework/arm/boot.oat (Java_android_os_BinderProxy_transactNative__ILandroid_os_Parcel_2Landroid_os_Parcel_2I+156)
at android.os.BinderProxy.transactNative (Native method)
at android.os.BinderProxy.transact (Binder.java:496)
at android.location.ILocationManager$Stub$Proxy.requestLocationUpdates (ILocationManager.java:581)
at android.location.LocationManager.requestLocationUpdates (LocationManager.java:867)
at android.location.LocationManager.requestLocationUpdates (LocationManager.java:459)
at com.genexttutors.utils.GPSTracker.getLocation (GPSTracker.java:124)
at com.genexttutors.utils.CommonMethods.googleLiveLocation (CommonMethods.java:169)
at com.genexttutors.activities.AttendanceMarkActivity.onClick (AttendanceMarkActivity.java:183)
at android.view.View.performClick (View.java:5076)
at android.view.View$PerformClick.run (View.java:20279)
at android.os.Handler.handleCallback (Handler.java:739)
at android.os.Handler.dispatchMessage (Handler.java:95)
at android.os.Looper.loop (Looper.java:135)
at android.app.ActivityThread.main (ActivityThread.java:5910)
at java.lang.reflect.Method.invoke! (Native method)
at java.lang.reflect.Method.invoke (Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run (ZygoteInit.java:1405)
at com.android.internal.os.ZygoteInit.main (ZygoteInit.java:1200)
以下是此代码提供ANR
的设备答案 0 :(得分：0)
首先不要使用GPSTracker。代码坏了。它大部分时间都不起作用。有关完整说明，请参阅http://gabesechansoftware.com/location-tracking/。
其次 - 你的googleLiveLocation完全被破坏了。它有一个等待非空位置的无限循环。这不仅不会起作用，而是在主线程上调用时确保ANR。
摆脱所有这些代码。使用正常工作的位置库（该链接有一个，但您必须向其添加运行时权限）。并且使用回调 - 你不能在主线程上等待发生的事情。