1 /* 2 * Copyright (C) 2016 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 package com.android.car.pm; 17 18 import android.app.Activity; 19 import android.car.Car; 20 import android.car.CarNotConnectedException; 21 import android.car.content.pm.CarPackageManager; 22 import android.content.ComponentName; 23 import android.content.Intent; 24 import android.content.ServiceConnection; 25 import android.content.pm.PackageManager; 26 import android.content.pm.ResolveInfo; 27 import android.os.Bundle; 28 import android.os.Handler; 29 import android.os.IBinder; 30 import android.os.Looper; 31 import android.util.Log; 32 import android.view.View; 33 import android.widget.Button; 34 35 import com.android.car.CarLog; 36 import com.android.car.R; 37 38 /** 39 * Default activity that will be launched when the current foreground activity is not allowed. 40 * Additional information on blocked Activity will be passed as extra in Intent 41 * via {@link #INTENT_KEY_BLOCKED_ACTIVITY} key. * 42 */ 43 public class ActivityBlockingActivity extends Activity { 44 45 public static final String INTENT_KEY_BLOCKED_ACTIVITY = "blocked_activity"; 46 47 private static final long AUTO_DISMISS_TIME_MS = 3000; 48 49 private Handler mHandler; 50 51 private Button mExitButton; 52 53 private Car mCar; 54 55 private boolean mExitRequested; 56 57 private final Runnable mFinishRunnable = () -> handleFinish(); 58 59 @Override onCreate(Bundle savedInstanceState)60 protected void onCreate(Bundle savedInstanceState) { 61 super.onCreate(savedInstanceState); 62 setContentView(R.layout.activity_blocking); 63 mHandler = new Handler(Looper.getMainLooper()); 64 mExitButton = (Button) findViewById(R.id.botton_exit_now); 65 mExitButton.setOnClickListener((View v) -> handleFinish()); 66 mCar = Car.createCar(this, new ServiceConnection() { 67 68 @Override 69 public void onServiceConnected(ComponentName name, IBinder service) { 70 if (mExitRequested) { 71 handleFinish(); 72 } 73 } 74 75 @Override 76 public void onServiceDisconnected(ComponentName name) { 77 } 78 79 }); 80 mCar.connect(); 81 } 82 83 @Override onResume()84 protected void onResume() { 85 super.onResume(); 86 mHandler.postDelayed(mFinishRunnable, AUTO_DISMISS_TIME_MS); 87 } 88 89 @Override onDestroy()90 protected void onDestroy() { 91 super.onDestroy(); 92 mHandler.removeCallbacks(mFinishRunnable); 93 mCar.disconnect(); 94 } 95 handleFinish()96 private void handleFinish() { 97 if (!mCar.isConnected()) { 98 mExitRequested = true; 99 return; 100 } 101 if (isFinishing()) { 102 return; 103 } 104 try { 105 CarPackageManager carPm = (CarPackageManager) mCar.getCarManager(Car.PACKAGE_SERVICE); 106 107 // finish itself only when it will not lead into another blocking 108 if (carPm.isActivityBackedBySafeActivity(getComponentName())) { 109 finish(); 110 return; 111 } 112 // back activity is not safe either. Now try home 113 Intent homeIntent = new Intent(Intent.ACTION_MAIN); 114 homeIntent.addCategory(Intent.CATEGORY_HOME); 115 PackageManager pm = getPackageManager(); 116 ComponentName homeComponent = homeIntent.resolveActivity(pm); 117 if (carPm.isActivityAllowedWhileDriving(homeComponent.getPackageName(), 118 homeComponent.getClassName())) { 119 startActivity(homeIntent); 120 finish(); 121 return; 122 } else { 123 Log.w(CarLog.TAG_AM, "Home activity is not in white list. Keep blocking activity. " 124 + ", Home Activity:" + homeComponent); 125 } 126 } catch (CarNotConnectedException e) { 127 Log.w(CarLog.TAG_AM, "Car service not avaiable, will finish", e); 128 finish(); 129 } 130 } 131 } 132