所以我一直在尝试从互联网上购买简单的地理围栏应用程序，但似乎没有一个能够正常运行。在以下示例中，当手机的经度和纬度符合常量类中定义的经度和纬度时，应触发通知。我用模拟器测试了它但是当我相应地更改模拟器gps坐标时，没有任何反应。 根据文档，有一些可能的原因导致警报无法按预期工作：
我在android studio上收到此消息： https://drive.google.com/open?id=12VjaB5BNjdIrOD5QVJWLoRwnXEZq6KKB
这是我的日志：
02-01 13:42:09.932 14925-14925/? I/zygote: Not late-enabling -Xcheck:jni (already on)
02-01 13:42:09.955 14925-14925/? W/zygote: Unexpected CPU variant for X86 using defaults: x86
02-01 13:42:09.993 14925-14932/? E/zygote: Failed writing handshake bytes (-1 of 14): Broken pipe
02-01 13:42:09.993 14925-14932/? I/zygote: Debugger is no longer active
02-01 13:42:10.315 14925-14925/? I/InstantRun: starting instant run server: is main process
02-01 13:42:10.725 14925-14942/? D/OpenGLRenderer: HWUI GL Pipeline
02-01 13:42:10.784 14925-14942/? I/zygote: android::hardware::configstore::V1_0::ISurfaceFlingerConfigs::hasWideColorDisplay retrieved: 0
02-01 13:42:10.784 14925-14942/? I/OpenGLRenderer: Initialized EGL, version 1.4
02-01 13:42:10.784 14925-14942/? D/OpenGLRenderer: Swap behavior 1
02-01 13:42:10.785 14925-14942/? W/OpenGLRenderer: Failed to choose config with EGL_SWAP_BEHAVIOR_PRESERVED, retrying without...
02-01 13:42:10.785 14925-14942/? D/OpenGLRenderer: Swap behavior 0
02-01 13:42:10.810 14925-14942/? D/EGL_emulation: eglCreateContext: 0x9cb60b60: maj 2 min 0 rcv 2
02-01 13:42:10.872 14925-14942/? D/EGL_emulation: eglMakeCurrent: 0x9cb60b60: ver 2 0 (tinfo 0xa60b35d0)
02-01 13:42:10.963 14925-14942/? D/EGL_emulation: eglMakeCurrent: 0x9cb60b60: ver 2 0 (tinfo 0xa60b35d0)
02-01 13:42:11.480 14925-14925/com.shah.kaushal28.fence I/Choreographer: Skipped 31 frames! The application may be doing too much work on its main thread.
MainActivity.java类
package com.shah.kaushal28.fence;
import android.app.PendingIntent;
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
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.common.api.ResultCallback;
import com.google.android.gms.common.api.Status;
import com.google.android.gms.location.Geofence;
import com.google.android.gms.location.GeofencingRequest;
import com.google.android.gms.location.LocationServices;
import com.google.android.gms.maps.model.LatLng;
import java.util.ArrayList;
import java.util.Map;
public class MainActivity extends AppCompatActivity implements
GoogleApiClient.ConnectionCallbacks,
GoogleApiClient.OnConnectionFailedListener,
ResultCallback<Status>{
private static final String TAG = "";
protected ArrayList<Geofence> mGeofenceList;
protected GoogleApiClient mGoogleApiClient;
private Button mAddGeofencesButton;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mAddGeofencesButton = (Button) findViewById(R.id.add_geofences_button);
// Empty list for storing geofences.
mGeofenceList = new ArrayList<Geofence>();
// Get the geofences used. Geofence data is hard coded in this sample.
populateGeofenceList();
// Kick off the request to build GoogleApiClient.
buildGoogleApiClient();
}
protected synchronized void buildGoogleApiClient() {
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build();
Log.e(TAG, "building client successful");
}
public void populateGeofenceList() {
for (Map.Entry<String, LatLng> entry : Constants.LANDMARKS.entrySet()) {
mGeofenceList.add(new Geofence.Builder()
.setRequestId(entry.getKey())
.setCircularRegion(
entry.getValue().latitude,
entry.getValue().longitude,
Constants.GEOFENCE_RADIUS_IN_METERS
)
.setExpirationDuration(Constants.GEOFENCE_EXPIRATION_IN_MILLISECONDS)
.setTransitionTypes(Geofence.GEOFENCE_TRANSITION_ENTER |
Geofence.GEOFENCE_TRANSITION_EXIT)
.build());
}
Log.e(TAG, "geofence populated");
}
@Override
protected void onStart() {
super.onStart();
if (!mGoogleApiClient.isConnecting() || !mGoogleApiClient.isConnected()) {
mGoogleApiClient.connect();
Log.e(TAG, "mGoogleApiClient connected");
}
}
@Override
protected void onStop() {
super.onStop();
if (mGoogleApiClient.isConnecting() || mGoogleApiClient.isConnected()) {
mGoogleApiClient.disconnect();
Log.e(TAG, "mGoogleApiClient disconnected");
}
}
@Override
public void onConnected(Bundle connectionHint) {
}
@Override
public void onConnectionFailed(ConnectionResult result) {
// Do something with result.getErrorCode());
}
@Override
public void onConnectionSuspended(int cause) {
mGoogleApiClient.connect();
}
public void addGeofencesButtonHandler(View view) {
if (!mGoogleApiClient.isConnected()) {
Toast.makeText(this, "Google API Client not connected!", Toast.LENGTH_SHORT).show();
return;
}
try {
LocationServices.GeofencingApi.addGeofences(
mGoogleApiClient,
getGeofencingRequest(),
getGeofencePendingIntent()
).setResultCallback(this); // Result processed in onResult().
} catch (SecurityException securityException) {
// Catch exception generated if the app does not use ACCESS_FINE_LOCATION permission.
}
Log.e(TAG, "geofence added");
}
private GeofencingRequest getGeofencingRequest() {
GeofencingRequest.Builder builder = new GeofencingRequest.Builder();
builder.setInitialTrigger(GeofencingRequest.INITIAL_TRIGGER_ENTER);
builder.addGeofences(mGeofenceList);
return builder.build();
}
private PendingIntent getGeofencePendingIntent() {
Intent intent = new Intent(this, GeofenceTransitionsIntentService.class);
// We use FLAG_UPDATE_CURRENT so that we get the same pending intent back when calling addgeoFences()
return PendingIntent.getService(this, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
}
public void onResult(Status status) {
if (status.isSuccess()) {
Toast.makeText(
this,
"Geofences Added",
Toast.LENGTH_SHORT
).show();
} else {
// Get the status code for the error and log it using a user-friendly message.
System.out.println("Error");
Toast.makeText(
this,
"Error",
Toast.LENGTH_SHORT
).show();
}
}
}
GeofenceTransitionsIntentService.java类
package com.shah.kaushal28.fence;
import android.app.IntentService;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.graphics.Color;
import android.support.v4.app.NotificationCompat;
import android.support.v4.app.TaskStackBuilder;
import android.text.TextUtils;
import android.util.Log;
import com.google.android.gms.location.Geofence;
import com.google.android.gms.location.GeofenceStatusCodes;
import com.google.android.gms.location.GeofencingEvent;
import java.util.ArrayList;
import java.util.List;
/**
* Created by Kaushal28 on 4/26/2017.
*/
public class GeofenceTransitionsIntentService extends IntentService {
protected static final String TAG = "GeofenceTransitionsIS";
public GeofenceTransitionsIntentService() {
super(TAG); // use TAG to name the IntentService worker thread
}
@Override
protected void onHandleIntent(Intent intent) {
GeofencingEvent event = GeofencingEvent.fromIntent(intent);
if (event.hasError()) {
Log.e(TAG, "GeofencingEvent Error: " + event.getErrorCode());
return;
}
String description = getGeofenceTransitionDetails(event);
sendNotification(description);
}
private static String getGeofenceTransitionDetails(GeofencingEvent event) {
String transitionString =
GeofenceStatusCodes.getStatusCodeString(event.getGeofenceTransition());
List triggeringIDs = new ArrayList();
for (Geofence geofence : event.getTriggeringGeofences()) {
triggeringIDs.add(geofence.getRequestId());
}
return String.format("%s: %s", transitionString, TextUtils.join(", ", triggeringIDs));
}
private void sendNotification(String notificationDetails) {
Log.e(TAG, "Notification Triggered");
// Create an explicit content Intent that starts MainActivity.
Intent notificationIntent = new Intent(getApplicationContext(), MainActivity.class);
// Get a PendingIntent containing the entire back stack.
TaskStackBuilder stackBuilder = TaskStackBuilder.create(this);
stackBuilder.addParentStack(MainActivity.class).addNextIntent(notificationIntent);
PendingIntent notificationPendingIntent =
stackBuilder.getPendingIntent(0, PendingIntent.FLAG_UPDATE_CURRENT);
// Get a notification builder that's compatible with platform versions >= 4
NotificationCompat.Builder builder = new NotificationCompat.Builder(this);
// Define the notification settings.
builder.setColor(Color.RED)
.setContentTitle(notificationDetails)
.setContentText("Click notification to return to App")
.setContentIntent(notificationPendingIntent)
.setAutoCancel(true);
// Fire and notify the built Notification.
NotificationManager notificationManager =
(NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
notificationManager.notify(0, builder.build());
}
}
Constants.java类
package com.shah.kaushal28.fence;
/**
* Created by Kaushal28 on 4/26/2017.
*/
import com.google.android.gms.maps.model.LatLng;
import java.util.HashMap;
public class Constants {
public static final long GEOFENCE_EXPIRATION_IN_MILLISECONDS = 12 * 60 * 60 * 1000;
public static final float GEOFENCE_RADIUS_IN_METERS = 20;
public static final HashMap<String, LatLng> LANDMARKS = new HashMap<String, LatLng>();
static {
// San Francisco International Airport.
LANDMARKS.put("Moscone South", new LatLng(37.783888,-122.4009012));
// Googleplex.
LANDMARKS.put("Japantown", new LatLng(37.785281,-122.4296384));
// Test
LANDMARKS.put("SFO", new LatLng(37.621313,-122.378955));
}
}
答案 0 :(得分：0)
尝试使用更大的半径，然后将其降低到要求 -
检查google docs- https://developer.android.com/training/location/geofencing.html
为地理围栏选择最佳半径
为获得最佳效果，地理围栏的最小半径应设置在100 - 150米之间。当Wi-Fi可用时，位置精度通常在20-50米之间。当室内位置可用时，精度范围可小至5米。除非您知道地理围栏内的室内位置，否则假设Wi-Fi定位精度约为50米。
当Wi-Fi位置不可用时（例如，当您在农村地区驾驶时），位置准确度会降低。精度范围可以达到几百米到几千米。在这种情况下，您应该使用更大的半径创建地理围栏。