DeviceDisconnectedReceiver.java revision 1d5dedc9e44fdccf0636cedac90529c0c5f6e166 
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.camerabrowser;
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;
25import android.net.Uri;
26
27public class DeviceDisconnectedReceiver extends BroadcastReceiver {
28
29    private final Activity mActivity;
30    private final int mDeviceID;
31
32    public DeviceDisconnectedReceiver(Activity activity, int deviceID) {
33        mActivity = activity;
34        mDeviceID = deviceID;
35
36     IntentFilter filter = new IntentFilter(Usb.ACTION_USB_CAMERA_DETACHED);
37     filter.addDataScheme("content");
38     activity.registerReceiver(this, filter);
39    }
40
41    @Override
42    public void onReceive(Context context, Intent intent) {
43        // close our activity if the device it is displaying is disconnected
44        Uri uri = intent.getData();
45        int id = Integer.parseInt(uri.getPathSegments().get(1));
46        if (id == mDeviceID) {
47            mActivity.finish();
48        }
49    }
50}