1 /* 2 * Copyright (C) 2015 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.settings.applications.appinfo; 17 18 import android.app.AppOpsManager; 19 import android.app.settings.SettingsEnums; 20 import android.content.Context; 21 import android.os.Bundle; 22 import android.view.LayoutInflater; 23 import android.view.View; 24 import android.view.ViewGroup; 25 26 import androidx.annotation.VisibleForTesting; 27 import androidx.appcompat.app.AlertDialog; 28 import androidx.preference.Preference; 29 import androidx.preference.Preference.OnPreferenceChangeListener; 30 import androidx.preference.Preference.OnPreferenceClickListener; 31 import androidx.preference.SwitchPreference; 32 33 import com.android.settings.R; 34 import com.android.settings.Utils; 35 import com.android.settings.applications.AppInfoWithHeader; 36 import com.android.settings.applications.AppStateAppOpsBridge.PermissionState; 37 import com.android.settings.applications.AppStateOverlayBridge; 38 import com.android.settings.applications.AppStateOverlayBridge.OverlayState; 39 import com.android.settings.overlay.FeatureFactory; 40 import com.android.settingslib.applications.ApplicationsState.AppEntry; 41 import com.android.settingslib.core.instrumentation.MetricsFeatureProvider; 42 43 public class DrawOverlayDetails extends AppInfoWithHeader implements OnPreferenceChangeListener, 44 OnPreferenceClickListener { 45 46 private static final String KEY_APP_OPS_SETTINGS_SWITCH = "app_ops_settings_switch"; 47 private static final String LOG_TAG = "DrawOverlayDetails"; 48 49 // Use a bridge to get the overlay details but don't initialize it to connect with all state. 50 // TODO: Break out this functionality into its own class. 51 private AppStateOverlayBridge mOverlayBridge; 52 private AppOpsManager mAppOpsManager; 53 private SwitchPreference mSwitchPref; 54 private OverlayState mOverlayState; 55 56 @Override onCreate(Bundle savedInstanceState)57 public void onCreate(Bundle savedInstanceState) { 58 super.onCreate(savedInstanceState); 59 60 Context context = getActivity(); 61 mOverlayBridge = new AppStateOverlayBridge(context, mState, null); 62 mAppOpsManager = (AppOpsManager) context.getSystemService(Context.APP_OPS_SERVICE); 63 64 if (!Utils.isSystemAlertWindowEnabled(context)) { 65 mPackageInfo = null; 66 return; 67 } 68 69 // find preferences 70 addPreferencesFromResource(R.xml.draw_overlay_permissions_details); 71 mSwitchPref = findPreference(KEY_APP_OPS_SETTINGS_SWITCH); 72 73 // install event listeners 74 mSwitchPref.setOnPreferenceChangeListener(this); 75 } 76 77 // Override here so we don't have an empty screen 78 @Override onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)79 public View onCreateView(LayoutInflater inflater, 80 ViewGroup container, 81 Bundle savedInstanceState) { 82 // if we don't have a package info, show a page saying this is unsupported 83 if (mPackageInfo == null) { 84 return inflater.inflate(R.layout.manage_applications_apps_unsupported, null); 85 } 86 return super.onCreateView(inflater, container, savedInstanceState); 87 } 88 89 @Override onDestroy()90 public void onDestroy() { 91 super.onDestroy(); 92 mOverlayBridge.release(); 93 } 94 95 @Override onPreferenceClick(Preference preference)96 public boolean onPreferenceClick(Preference preference) { 97 return false; 98 } 99 100 @Override onPreferenceChange(Preference preference, Object newValue)101 public boolean onPreferenceChange(Preference preference, Object newValue) { 102 if (preference == mSwitchPref) { 103 if (mOverlayState != null && (Boolean) newValue != mOverlayState.isPermissible()) { 104 setCanDrawOverlay(!mOverlayState.isPermissible()); 105 refreshUi(); 106 } 107 return true; 108 } 109 return false; 110 } 111 setCanDrawOverlay(boolean newState)112 private void setCanDrawOverlay(boolean newState) { 113 logSpecialPermissionChange(newState, mPackageName); 114 mAppOpsManager.setMode(AppOpsManager.OP_SYSTEM_ALERT_WINDOW, 115 mPackageInfo.applicationInfo.uid, mPackageName, newState 116 ? AppOpsManager.MODE_ALLOWED : AppOpsManager.MODE_ERRORED); 117 } 118 119 @VisibleForTesting logSpecialPermissionChange(boolean newState, String packageName)120 void logSpecialPermissionChange(boolean newState, String packageName) { 121 int logCategory = newState ? SettingsEnums.APP_SPECIAL_PERMISSION_APPDRAW_ALLOW 122 : SettingsEnums.APP_SPECIAL_PERMISSION_APPDRAW_DENY; 123 final MetricsFeatureProvider metricsFeatureProvider = 124 FeatureFactory.getFactory(getContext()).getMetricsFeatureProvider(); 125 metricsFeatureProvider.action( 126 metricsFeatureProvider.getAttribution(getActivity()), 127 logCategory, 128 getMetricsCategory(), 129 packageName, 130 0); 131 } 132 133 @Override refreshUi()134 protected boolean refreshUi() { 135 if (mPackageInfo == null) { 136 return true; 137 } 138 139 mOverlayState = mOverlayBridge.getOverlayInfo(mPackageName, 140 mPackageInfo.applicationInfo.uid); 141 142 boolean isAllowed = mOverlayState.isPermissible(); 143 mSwitchPref.setChecked(isAllowed); 144 // you cannot ask a user to grant you a permission you did not have! 145 mSwitchPref.setEnabled(mOverlayState.permissionDeclared && mOverlayState.controlEnabled); 146 147 return true; 148 } 149 150 @Override createDialog(int id, int errorCode)151 protected AlertDialog createDialog(int id, int errorCode) { 152 return null; 153 } 154 155 @Override getMetricsCategory()156 public int getMetricsCategory() { 157 return SettingsEnums.SYSTEM_ALERT_WINDOW_APPS; 158 } 159 getSummary(Context context, AppEntry entry)160 public static CharSequence getSummary(Context context, AppEntry entry) { 161 OverlayState state; 162 if (entry.extraInfo instanceof OverlayState) { 163 state = (OverlayState) entry.extraInfo; 164 } else if (entry.extraInfo instanceof PermissionState) { 165 state = new OverlayState((PermissionState) entry.extraInfo); 166 } else { 167 state = new AppStateOverlayBridge(context, null, null).getOverlayInfo( 168 entry.info.packageName, entry.info.uid); 169 } 170 171 return getSummary(context, state); 172 } 173 getSummary(Context context, OverlayState overlayState)174 public static CharSequence getSummary(Context context, OverlayState overlayState) { 175 return context.getString(overlayState.isPermissible() ? 176 R.string.app_permission_summary_allowed 177 : R.string.app_permission_summary_not_allowed); 178 } 179 } 180