/packages/SystemUI/src/com/android/systemui/usb/UsbDisconnectedReceiver.java

 1/*
 2 * Copyright (C) 2010 The Android Open Source Project
 3 *
 4 * Licensed under the Apache License, Version 2.0 (the "License");
 5 * you may not use this file except in compliance with the License.
 6 * You may obtain a copy of the License at
 7 *
 8 *      http://www.apache.org/licenses/LICENSE-2.0
 9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.android.systemui.usb;
18
19import android.app.Activity;
20import android.content.BroadcastReceiver;
21import android.content.Context;
22import android.content.Intent;
23import android.content.IntentFilter;
24import android.hardware.usb.UsbAccessory;
25import android.hardware.usb.UsbDevice;
26import android.hardware.usb.UsbManager;
27
28// This class is used to close UsbPermissionsActivity and UsbResolverActivity
29// if their device/accessory is disconnected while the dialog is still open
30class UsbDisconnectedReceiver extends BroadcastReceiver {
31    private final Activity mActivity;
32    private UsbDevice mDevice;
33    private UsbAccessory mAccessory;
34
35    public UsbDisconnectedReceiver(Activity activity, UsbDevice device) {
36       mActivity = activity;
37        mDevice = device;
38
39        IntentFilter filter = new IntentFilter(UsbManager.ACTION_USB_DEVICE_DETACHED);
40        activity.registerReceiver(this, filter);
41    }
42
43    public UsbDisconnectedReceiver(Activity activity, UsbAccessory accessory) {
44        mActivity = activity;
45        mAccessory = accessory;
46
47        IntentFilter filter = new IntentFilter(UsbManager.ACTION_USB_ACCESSORY_DETACHED);
48        activity.registerReceiver(this, filter);
49    }
50
51    @Override
52    public void onReceive(Context context, Intent intent) {
53        String action = intent.getAction();
54        if (UsbManager.ACTION_USB_DEVICE_DETACHED.equals(action)) {
55            UsbDevice device = (UsbDevice)intent.getParcelableExtra(UsbManager.EXTRA_DEVICE);
56            if (device != null && device.equals(mDevice)) {
57                mActivity.finish();
58            }
59        } else if (UsbManager.ACTION_USB_ACCESSORY_DETACHED.equals(action)) {
60            UsbAccessory accessory =
61                    (UsbAccessory)intent.getParcelableExtra(UsbManager.EXTRA_ACCESSORY);
62            if (accessory != null && accessory.equals(mAccessory)) {
63                mActivity.finish();
64            }
65        }
66    }
67}