org.ros.android.android_acm_serial.UsbDeviceDetachedReceiver.java Source code

Introduction

Here is the source code for org.ros.android.android_acm_serial.UsbDeviceDetachedReceiver.java

Source

/*
 * Copyright (C) 2011 Google Inc.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */

package org.ros.android.android_acm_serial;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.hardware.usb.UsbDevice;
import android.hardware.usb.UsbManager;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.ros.exception.RosRuntimeException;

import java.util.Map;

/**
 * @author damonkohler@google.com (Damon Kohler)
 */
final class UsbDeviceDetachedReceiver extends BroadcastReceiver {

    private static final boolean DEBUG = true;
    private static final Log log = LogFactory.getLog(UsbDeviceDetachedReceiver.class);

    private final Map<String, AcmDevice> acmDevices;

    public UsbDeviceDetachedReceiver(Map<String, AcmDevice> acmDevices) {
        this.acmDevices = acmDevices;
    }

    @Override
    public void onReceive(Context context, Intent intent) {
        UsbDevice usbDevice = (UsbDevice) intent.getParcelableExtra(UsbManager.EXTRA_DEVICE);
        String deviceName = usbDevice.getDeviceName();
        AcmDevice acmDevice = acmDevices.remove(deviceName);
        if (acmDevice != null) {
            try {
                acmDevice.close();
            } catch (RosRuntimeException e) {
                // Ignore spurious errors on disconnect.
            }
        }
        if (DEBUG) {
            log.info("USB device removed: " + deviceName);
        }
    }
}