Android逼近警報不起作用

Question

我想向我的位置管理器添加近似警報。我給緯度和longituge和給遠距離paramater 20。當我從模擬器給出相同的經緯度時，我的逼近等待意圖不會激怒。怎麼了？

這裏是我的onCreate（）

@Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.main); 
     lm = (LocationManager) getSystemService(LOCATION_SERVICE); 
     lm.addProximityAlert(31.4474, 73.08, 20, -1, PendingIntent.getActivity(
       Main.this, 0, new Intent(android.content.Intent.ACTION_VIEW, 
         Uri.parse("http://www.google.com")), 0)); 
     lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, new LocationListener() { 

     @Override 
     public void onStatusChanged(String arg0, int arg1, Bundle arg2) {} 

     @Override 
     public void onProviderEnabled(String arg0) {} 

     @Override 
     public void onProviderDisabled(String arg0) {} 

     @Override 
     public void onLocationChanged(Location arg0) { 
      Toast.makeText(Main.this,arg0.getLatitude()+" "+arg0.getLongitude(), 300).show(); 
     } 
    }); 
} 

的manifest.xml

<manifest xmlns:android="http://schemas.android.com/apk/res/android" 
    package="com.example.proximityalert" 
    android:versionCode="1" 
    android:versionName="1.0" 

> 

<uses-sdk 
    android:minSdkVersion="6" 
    android:targetSdkVersion="10" /> 
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/> 
<uses-permission android:name="android.permission.ACCESS_MOCK_LOCATION"/> 

<application 
    android:allowBackup="true" 
    android:icon="@drawable/ic_launcher" 
    android:label="@string/app_name" 
    android:theme="@style/AppTheme" > 
    <activity 
     android:name="com.example.proximityalert.Main" 
     android:label="@string/app_name" > 
     <intent-filter> 
      <action android:name="android.intent.action.MAIN" /> 

      <category android:name="android.intent.category.LAUNCHER" /> 
     </intent-filter> 
    </activity> 
</application> 

Answer 1

試試這個：

Intent intent = new Intent(PROX_ALERT_INTENT); 
     PendingIntent proximityIntent = PendingIntent.getBroadcast(this, 0, intent, 0); 

     locationManager.addProximityAlert(
      latitude, // the latitude of the central point of the alert region 
      longitude, // the longitude of the central point of the alert region 
      POINT_RADIUS, // the radius of the central point of the alert region, in meters 
      PROX_ALERT_EXPIRATION, // time for this proximity alert, in milliseconds, or -1 to indicate no expiration 
      proximityIntent // will be used to generate an Intent to fire when entry to or exit from the alert region is detected 
     ); 

     IntentFilter filter = new IntentFilter(PROX_ALERT_INTENT); 
     registerReceiver(new ProximityIntentReceiver(), filter); 

ProximityIntentReceiver.java

public class ProximityIntentReceiver extends BroadcastReceiver { 

    private static final int NOTIFICATION_ID = 1000; 

    @Override 
    public void onReceive(Context context, Intent intent) { 

     String key = LocationManager.KEY_PROXIMITY_ENTERING; 

     Boolean entering = intent.getBooleanExtra(key, false); 

     if (entering) { 
      Log.d(getClass().getSimpleName(), "entering"); 
     } 
     else { 
      Log.d(getClass().getSimpleName(), "exiting"); 
     } 

     NotificationManager notificationManager = 
      (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE); 

     PendingIntent pendingIntent = PendingIntent.getActivity(context, 0, null, 0);  

     Notification notification = createNotification(); 
     notification.setLatestEventInfo(context, "Proximity Alert!", "You are near your point of interest.", pendingIntent); 

     notificationManager.notify(NOTIFICATION_ID, notification); 

    } 

    private Notification createNotification() { 
     Notification notification = new Notification(); 

     notification.icon = R.drawable.ic_menu_notifications; 
     notification.when = System.currentTimeMillis(); 

     notification.flags |= Notification.FLAG_AUTO_CANCEL; 
     notification.flags |= Notification.FLAG_SHOW_LIGHTS; 

     notification.defaults |= Notification.DEFAULT_VIBRATE; 
     notification.defaults |= Notification.DEFAULT_LIGHTS; 

     notification.ledARGB = Color.WHITE; 
     notification.ledOnMS = 1500; 
     notification.ledOffMS = 1500; 

     return notification; 
    } 

} 

所需權限：

<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" /> 
<uses-permission android:name="android.permission.ACCESS_MOCK_LOCATION" /> 
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" /> 
<uses-permission android:name="android.permission.VIBRATE" /> 

private static final String PROX_ALERT_INTENT = "<your pack name>.ProximityAlert";