Michael Kolb | 8872c23 | 2013-01-29 10:33:22 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2012 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 | |
| 17 | package com.android.camera; |
| 18 | |
| 19 | import android.content.BroadcastReceiver; |
| 20 | import android.content.ComponentName; |
| 21 | import android.content.Context; |
| 22 | import android.content.Intent; |
| 23 | import android.content.pm.PackageManager; |
| 24 | import android.hardware.Camera.CameraInfo; |
Angus Kong | 2bca210 | 2014-03-11 16:27:30 -0700 | [diff] [blame] | 25 | |
| 26 | import com.android.camera.debug.Log; |
Michael Kolb | 8872c23 | 2013-01-29 10:33:22 -0800 | [diff] [blame] | 27 | |
| 28 | // We want to disable camera-related activities if there is no camera. This |
| 29 | // receiver runs when BOOT_COMPLETED intent is received. After running once |
| 30 | // this receiver will be disabled, so it will not run again. |
| 31 | public class DisableCameraReceiver extends BroadcastReceiver { |
Angus Kong | 2bca210 | 2014-03-11 16:27:30 -0700 | [diff] [blame] | 32 | private static final Log.Tag TAG = new Log.Tag("DisableCamRcver"); |
Michael Kolb | 8872c23 | 2013-01-29 10:33:22 -0800 | [diff] [blame] | 33 | private static final boolean CHECK_BACK_CAMERA_ONLY = true; |
| 34 | private static final String ACTIVITIES[] = { |
| 35 | "com.android.camera.CameraLauncher", |
| 36 | }; |
| 37 | |
| 38 | @Override |
| 39 | public void onReceive(Context context, Intent intent) { |
| 40 | // Disable camera-related activities if there is no camera. |
| 41 | boolean needCameraActivity = CHECK_BACK_CAMERA_ONLY |
| 42 | ? hasBackCamera() |
| 43 | : hasCamera(); |
| 44 | |
| 45 | if (!needCameraActivity) { |
| 46 | Log.i(TAG, "disable all camera activities"); |
| 47 | for (int i = 0; i < ACTIVITIES.length; i++) { |
| 48 | disableComponent(context, ACTIVITIES[i]); |
| 49 | } |
| 50 | } |
| 51 | |
| 52 | // Disable this receiver so it won't run again. |
| 53 | disableComponent(context, "com.android.camera.DisableCameraReceiver"); |
| 54 | } |
| 55 | |
| 56 | private boolean hasCamera() { |
| 57 | int n = android.hardware.Camera.getNumberOfCameras(); |
| 58 | Log.i(TAG, "number of camera: " + n); |
| 59 | return (n > 0); |
| 60 | } |
| 61 | |
| 62 | private boolean hasBackCamera() { |
| 63 | int n = android.hardware.Camera.getNumberOfCameras(); |
| 64 | CameraInfo info = new CameraInfo(); |
| 65 | for (int i = 0; i < n; i++) { |
| 66 | android.hardware.Camera.getCameraInfo(i, info); |
| 67 | if (info.facing == CameraInfo.CAMERA_FACING_BACK) { |
| 68 | Log.i(TAG, "back camera found: " + i); |
| 69 | return true; |
| 70 | } |
| 71 | } |
| 72 | Log.i(TAG, "no back camera"); |
| 73 | return false; |
| 74 | } |
| 75 | |
| 76 | private void disableComponent(Context context, String klass) { |
| 77 | ComponentName name = new ComponentName(context, klass); |
| 78 | PackageManager pm = context.getPackageManager(); |
| 79 | |
| 80 | // We need the DONT_KILL_APP flag, otherwise we will be killed |
| 81 | // immediately because we are in the same app. |
| 82 | pm.setComponentEnabledSetting(name, |
| 83 | PackageManager.COMPONENT_ENABLED_STATE_DISABLED, |
| 84 | PackageManager.DONT_KILL_APP); |
| 85 | } |
| 86 | } |