Android 接近警报 - 未触发

Question

我不知道自己做错了什么快疯了，现在我正在向 StackOverflow 寻求帮助。

我正在尝试使用接近警报添加位置，当接近警报触发时，我会收到通知。我在四处走动时会收到位置更新，并且我有应用程序不断打印我到接近警报中心位置的距离。

问题是接近警报永远不会触发。尝试此操作时，我一直在使用带有实际 GPS 的物理设备。

设置接近警报的代码。显示了最后的吐司，所以我知道这段代码运行了。

    LocationManager locationManager = (LocationManager)getSystemService(Context.LOCATION_SERVICE);

    Intent intent = new Intent(PROX_ALERT_INTENT);
    intent.putExtra(PROXIMITY_ITEM_ID, item.getID());
    PendingIntent proximityIntent = PendingIntent.getBroadcast(this, item.getID(), intent, 0);

    locationManager.addProximityAlert(
        item.getPlace().getLocation().latitude, // the latitude of the central point of the alert region
        item.getPlace().getLocation().longitude, // the longitude of the central point of the alert region
        200, // the radius of the central point of the alert region, in meters
        -1, // 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);
    this.registerReceiver(new ProximityAlertBroadcastReceiver(), filter);
    Toast.makeText(this, "Added new proximity alert event...", Toast.LENGTH_SHORT).show();

然后我有了广播接收器的代码。这段代码永远不会运行，所以我永远不会收到 toast 或通知。

public class ProximityAlertBroadcastReceiver extends BroadcastReceiver {

    private void createNotification(Context context, ToDoItem todoItem) {
        NotificationCompat.Builder mBuilder =
                new NotificationCompat.Builder(context)
                .setSmallIcon(R.drawable.todomaps_icon)
                .setContentTitle(todoItem.getTask())
                .setContentText("You are " + todoItem.getDistanceString() + " to todo: " + todoItem.getTask());

        // Sets an ID for the notification
        int mNotificationId = 001;
        // Gets an instance of the NotificationManager service
        NotificationManager mNotifyMgr = (NotificationManager)context.getSystemService(Context.NOTIFICATION_SERVICE);
        // Builds the notification and issues it.
        mNotifyMgr.notify(mNotificationId, mBuilder.build());
    }

    @Override
    public void onReceive(Context context, Intent intent) {
        Toast.makeText(context, "ON RECEIVE!", Toast.LENGTH_SHORT).show(); //TODO: TEMP
        int itemID = intent.getIntExtra(AddItemActivity.PROXIMITY_ITEM_ID, -1);
        DBHandler handler = new DBHandler(context);
        Item item = handler.getItem(itemID);
        createNotification(context, item);
    }

}

我不知道这是否有所不同，但应用程序中用于查看到接近警报中心距离的位置管理器实例是用于创建接近警报的不同实例。所以创建接近警报的位置管理器实例没有请求位置更新，但我猜这并不重要。

这是我使用的权限：

<permission 
    android:name="com.flipsoft.todomaps.permission.MAPS_RECEIVE"
    android:protectionLevel="signature"></permission>

<uses-permission android:name="com.flipsoft.todomaps.permission.MAPS_RECEIVE"/>
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES"/>
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>

<uses-feature
  android:glEsVersion="0x00020000"
  android:required="true"/>

Answer 1

您是否在 Manifest 中注册了接收方？

<receiver android:name="com.example.ProximityAlertBroadcastReceiver" >
    <intent-filter>
        <action android:name="<your intent>" />
    </intent-filter>
</receiver>

见Notify users when they reach a location