1 /* 2 * Copyright (C) 2017 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.nfc; 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.nfc.Constants; 25 26 /** 27 * Boot completed receiver. used to disable the application if the device doesn't 28 * support NFC when device boots. 29 */ 30 public class NfcBootCompletedReceiver extends BroadcastReceiver { 31 @Override onReceive(Context context, Intent intent)32 public void onReceive(Context context, Intent intent) { 33 String action = intent.getAction(); 34 35 if (Intent.ACTION_BOOT_COMPLETED.equals(action)) { 36 PackageManager pm = context.getPackageManager(); 37 if (!pm.hasSystemFeature(Constants.FEATURE_NFC_ANY)) { 38 pm.setApplicationEnabledSetting(context.getPackageName(), 39 PackageManager.COMPONENT_ENABLED_STATE_DISABLED, 0); 40 } else { 41 // If the device does support NFC, we know that we don't need to run 42 // this code again, so disabling the boot receiver. This is for saving 43 // CPU cycles spent on NFC cold-start during boot for devices that 44 // actually support NFC. 45 pm.setComponentEnabledSetting(new ComponentName(context, this.getClass()), 46 PackageManager.COMPONENT_ENABLED_STATE_DISABLED, 47 PackageManager.DONT_KILL_APP); 48 } 49 } 50 } 51 } 52