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/*
* Copyright (C) 2012 The Android Open Source Project
*
* 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 com.android.camera;
import android.content.BroadcastReceiver;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.hardware.Camera.CameraInfo;
import android.util.Log;
// We want to disable camera-related activities if there is no camera. This
// receiver runs when BOOT_COMPLETED intent is received. After running once
// this receiver will be disabled, so it will not run again.
public class DisableCameraReceiver extends BroadcastReceiver {
private static final String TAG = "G:DisableCameraReceiver";
private static final boolean CHECK_BACK_CAMERA_ONLY = true;
private static final String ACTIVITIES[] = {
"com.android.camera.CameraLauncher",
};
@Override
public void onReceive(Context context, Intent intent) {
// Disable camera-related activities if there is no camera.
boolean needCameraActivity = CHECK_BACK_CAMERA_ONLY
? hasBackCamera()
: hasCamera();
if (!needCameraActivity) {
Log.i(TAG, "disable all camera activities");
for (int i = 0; i < ACTIVITIES.length; i++) {
disableComponent(context, ACTIVITIES[i]);
}
}
// Disable this receiver so it won't run again.
disableComponent(context, "com.android.camera.DisableCameraReceiver");
}
private boolean hasCamera() {
int n = android.hardware.Camera.getNumberOfCameras();
Log.i(TAG, "number of camera: " + n);
return (n > 0);
}
private boolean hasBackCamera() {
int n = android.hardware.Camera.getNumberOfCameras();
CameraInfo info = new CameraInfo();
for (int i = 0; i < n; i++) {
android.hardware.Camera.getCameraInfo(i, info);
if (info.facing == CameraInfo.CAMERA_FACING_BACK) {
Log.i(TAG, "back camera found: " + i);
return true;
}
}
Log.i(TAG, "no back camera");
return false;
}
private void disableComponent(Context context, String klass) {
ComponentName name = new ComponentName(context, klass);
PackageManager pm = context.getPackageManager();
// We need the DONT_KILL_APP flag, otherwise we will be killed
// immediately because we are in the same app.
pm.setComponentEnabledSetting(name,
PackageManager.COMPONENT_ENABLED_STATE_DISABLED,
PackageManager.DONT_KILL_APP);
}
}