使用Log类跟踪Runtime显示onReceive()方法没有调用,为什么？

动态注册广播接收器

private void discoverDevices () {

Log.e("MOHAB","BEFORE ON RECEIVE");

mReceiver = new BroadcastReceiver() {

public void onReceive(Context context, Intent intent) {

Log.e("MOHAB","ON RECEIVE");

String action = intent.getAction();

// When discovery finds a device

if (BluetoothDevice.ACTION_FOUND.equals(action)) {

// Get the BluetoothDevice object from the Intent

BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);

// Add the name and address to an array adapter to show in a ListView

Bluetooth b = new Bluetooth(device.getName(),device.getAddress());

list.add(b);

}

}

};

Log.e("MOHAB","create intentFilter");

// Register the BroadcastReceiver

IntentFilter filter = new IntentFilter(BluetoothDevice.ACTION_FOUND);

registerReceiver(mReceiver, filter); // Don't forget to unregister during onDestroy

}