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.dialer.precall.impl; 18 19 import android.app.Activity; 20 import android.app.KeyguardManager; 21 import android.os.Bundle; 22 import android.support.annotation.Nullable; 23 import android.view.WindowManager.LayoutParams; 24 25 /** A transparent activity to host dialogs for {@link PreCallCoordinatorImpl} */ 26 public class PreCallActivity extends Activity { 27 28 private PreCallCoordinatorImpl preCallCoordinator; 29 30 @Override onCreate(@ullable Bundle savedInstanceState)31 public void onCreate(@Nullable Bundle savedInstanceState) { 32 super.onCreate(savedInstanceState); 33 preCallCoordinator = new PreCallCoordinatorImpl(this); 34 preCallCoordinator.onCreate(getIntent(), savedInstanceState); 35 if (getSystemService(KeyguardManager.class).isKeyguardLocked()) { 36 // Note: 37 // 38 // Flag LayoutParams.FLAG_TURN_SCREEN_ON was deprecated in O_MR1, but calling the new API 39 // setTurnScreenOn(true) doesn't give us the expected behavior. 40 // 41 // Calling setTurnScreenOn(true) alone doesn't turn on the screen when the device is locked. 42 // We must also call KeyguardManager#requestDismissKeyguard, which will bring up the lock 43 // screen for the user to enter their credentials. 44 // 45 // If the Keyguard is not secure or the device is currently in a trusted state, calling 46 // requestDismissKeyguard will immediately dismiss the Keyguard without any user interaction. 47 // However, the lock screen will still pop up before it quickly disappears. 48 // 49 // If the Keyguard is secure and the device is not in a trusted state, the device will show 50 // the lock screen and wait for the user's credentials. 51 // 52 // Therefore, to avoid showing the lock screen, we will continue using the deprecated flag in 53 // O_MR1 and later Android versions. 54 // 55 // Flag LayoutParams.FLAG_SHOW_WHEN_LOCKED was also deprecated in O_MR1, and the new API 56 // setShowWhenLocked(boolean) works. However, as the purpose of the two new APIs is to prevent 57 // an unintentional double life-cycle event, only using one is ineffective. 58 // 59 // Therefore, to simplify code and make testing easier, we will also keep using 60 // LayoutParams.FLAG_SHOW_WHEN_LOCKED. 61 getWindow().addFlags(LayoutParams.FLAG_SHOW_WHEN_LOCKED | LayoutParams.FLAG_TURN_SCREEN_ON); 62 } 63 } 64 65 @Override onRestoreInstanceState(Bundle savedInstanceState)66 protected void onRestoreInstanceState(Bundle savedInstanceState) { 67 super.onRestoreInstanceState(savedInstanceState); 68 preCallCoordinator.onRestoreInstanceState(savedInstanceState); 69 } 70 71 @Override onResume()72 public void onResume() { 73 super.onResume(); 74 preCallCoordinator.onResume(); 75 } 76 77 @Override onPause()78 public void onPause() { 79 super.onPause(); 80 preCallCoordinator.onPause(); 81 } 82 83 @Override onSaveInstanceState(Bundle outState)84 public void onSaveInstanceState(Bundle outState) { 85 super.onSaveInstanceState(outState); 86 preCallCoordinator.onSaveInstanceState(outState); 87 } 88 } 89