Java tutorial
/* * Copyright (C) 2015 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.talkback; import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.support.v4.os.BuildCompat; import android.support.v4.os.UserManagerCompat; import com.google.android.marvin.talkback.TalkBackService; public class BootReceiver extends BroadcastReceiver { @Override public void onReceive(Context context, Intent intent) { TalkBackService service = TalkBackService.getInstance(); if (service == null) { return; } // We need to ensure that onLockedBootCompleted() and onUnlockedBootCompleted() are called // *in that order* to properly set up TalkBack. switch (intent.getAction()) { case Intent.ACTION_LOCKED_BOOT_COMPLETED: // Only N+ devices will get this intent (even if they don't have FBE enabled). service.onLockedBootCompleted(); break; case Intent.ACTION_BOOT_COMPLETED: if (!BuildCompat.isAtLeastN()) { // Pre-N devices will never get LOCKED_BOOT, so we need to do the locked-boot // initialization here right before we do the unlocked-boot initialization. service.onLockedBootCompleted(); } service.onUnlockedBootCompleted(); break; } } }