1 /* 2 * Copyright (C) 2010 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 android.app; 18 19 import android.annotation.IntDef; 20 import android.annotation.SystemService; 21 import android.annotation.TestApi; 22 import android.content.Context; 23 import android.content.res.Configuration; 24 import android.os.RemoteException; 25 import android.os.ServiceManager; 26 import android.os.ServiceManager.ServiceNotFoundException; 27 import android.util.Log; 28 29 import java.lang.annotation.Retention; 30 import java.lang.annotation.RetentionPolicy; 31 32 /** 33 * This class provides access to the system uimode services. These services 34 * allow applications to control UI modes of the device. 35 * It provides functionality to disable the car mode and it gives access to the 36 * night mode settings. 37 * 38 * <p>These facilities are built on top of the underlying 39 * {@link android.content.Intent#ACTION_DOCK_EVENT} broadcasts that are sent when the user 40 * physical places the device into and out of a dock. When that happens, 41 * the UiModeManager switches the system {@link android.content.res.Configuration} 42 * to the appropriate UI mode, sends broadcasts about the mode switch, and 43 * starts the corresponding mode activity if appropriate. See the 44 * broadcasts {@link #ACTION_ENTER_CAR_MODE} and 45 * {@link #ACTION_ENTER_DESK_MODE} for more information. 46 * 47 * <p>In addition, the user may manually switch the system to car mode without 48 * physically being in a dock. While in car mode -- whether by manual action 49 * from the user or being physically placed in a dock -- a notification is 50 * displayed allowing the user to exit dock mode. Thus the dock mode 51 * represented here may be different than the current state of the underlying 52 * dock event broadcast. 53 */ 54 @SystemService(Context.UI_MODE_SERVICE) 55 public class UiModeManager { 56 private static final String TAG = "UiModeManager"; 57 58 /** 59 * Broadcast sent when the device's UI has switched to car mode, either 60 * by being placed in a car dock or explicit action of the user. After 61 * sending the broadcast, the system will start the intent 62 * {@link android.content.Intent#ACTION_MAIN} with category 63 * {@link android.content.Intent#CATEGORY_CAR_DOCK} 64 * to display the car UI, which typically what an application would 65 * implement to provide their own interface. However, applications can 66 * also monitor this Intent in order to be informed of mode changes or 67 * prevent the normal car UI from being displayed by setting the result 68 * of the broadcast to {@link Activity#RESULT_CANCELED}. 69 */ 70 public static String ACTION_ENTER_CAR_MODE = "android.app.action.ENTER_CAR_MODE"; 71 72 /** 73 * Broadcast sent when the device's UI has switch away from car mode back 74 * to normal mode. Typically used by a car mode app, to dismiss itself 75 * when the user exits car mode. 76 */ 77 public static String ACTION_EXIT_CAR_MODE = "android.app.action.EXIT_CAR_MODE"; 78 79 /** 80 * Broadcast sent when the device's UI has switched to desk mode, 81 * by being placed in a desk dock. After 82 * sending the broadcast, the system will start the intent 83 * {@link android.content.Intent#ACTION_MAIN} with category 84 * {@link android.content.Intent#CATEGORY_DESK_DOCK} 85 * to display the desk UI, which typically what an application would 86 * implement to provide their own interface. However, applications can 87 * also monitor this Intent in order to be informed of mode changes or 88 * prevent the normal desk UI from being displayed by setting the result 89 * of the broadcast to {@link Activity#RESULT_CANCELED}. 90 */ 91 public static String ACTION_ENTER_DESK_MODE = "android.app.action.ENTER_DESK_MODE"; 92 93 /** 94 * Broadcast sent when the device's UI has switched away from desk mode back 95 * to normal mode. Typically used by a desk mode app, to dismiss itself 96 * when the user exits desk mode. 97 */ 98 public static String ACTION_EXIT_DESK_MODE = "android.app.action.EXIT_DESK_MODE"; 99 100 /** @hide */ 101 @IntDef({MODE_NIGHT_AUTO, MODE_NIGHT_NO, MODE_NIGHT_YES}) 102 @Retention(RetentionPolicy.SOURCE) 103 public @interface NightMode {} 104 105 /** 106 * Constant for {@link #setNightMode(int)} and {@link #getNightMode()}: 107 * automatically switch night mode on and off based on the time. 108 */ 109 public static final int MODE_NIGHT_AUTO = Configuration.UI_MODE_NIGHT_UNDEFINED >> 4; 110 111 /** 112 * Constant for {@link #setNightMode(int)} and {@link #getNightMode()}: 113 * never run in night mode. 114 */ 115 public static final int MODE_NIGHT_NO = Configuration.UI_MODE_NIGHT_NO >> 4; 116 117 /** 118 * Constant for {@link #setNightMode(int)} and {@link #getNightMode()}: 119 * always run in night mode. 120 */ 121 public static final int MODE_NIGHT_YES = Configuration.UI_MODE_NIGHT_YES >> 4; 122 123 private IUiModeManager mService; 124 UiModeManager()125 /*package*/ UiModeManager() throws ServiceNotFoundException { 126 mService = IUiModeManager.Stub.asInterface( 127 ServiceManager.getServiceOrThrow(Context.UI_MODE_SERVICE)); 128 } 129 130 /** 131 * Flag for use with {@link #enableCarMode(int)}: go to the car 132 * home activity as part of the enable. Enabling this way ensures 133 * a clean transition between the current activity (in non-car-mode) and 134 * the car home activity that will serve as home while in car mode. This 135 * will switch to the car home activity even if we are already in car mode. 136 */ 137 public static final int ENABLE_CAR_MODE_GO_CAR_HOME = 0x0001; 138 139 /** 140 * Flag for use with {@link #enableCarMode(int)}: allow sleep mode while in car mode. 141 * By default, when this flag is not set, the system may hold a full wake lock to keep the 142 * screen turned on and prevent the system from entering sleep mode while in car mode. 143 * Setting this flag disables such behavior and the system may enter sleep mode 144 * if there is no other user activity and no other wake lock held. 145 * Setting this flag can be relevant for a car dock application that does not require the 146 * screen kept on. 147 */ 148 public static final int ENABLE_CAR_MODE_ALLOW_SLEEP = 0x0002; 149 150 /** 151 * Force device into car mode, like it had been placed in the car dock. 152 * This will cause the device to switch to the car home UI as part of 153 * the mode switch. 154 * @param flags Must be 0. 155 */ enableCarMode(int flags)156 public void enableCarMode(int flags) { 157 if (mService != null) { 158 try { 159 mService.enableCarMode(flags); 160 } catch (RemoteException e) { 161 throw e.rethrowFromSystemServer(); 162 } 163 } 164 } 165 166 /** 167 * Flag for use with {@link #disableCarMode(int)}: go to the normal 168 * home activity as part of the disable. Disabling this way ensures 169 * a clean transition between the current activity (in car mode) and 170 * the original home activity (which was typically last running without 171 * being in car mode). 172 */ 173 public static final int DISABLE_CAR_MODE_GO_HOME = 0x0001; 174 175 /** 176 * Turn off special mode if currently in car mode. 177 * @param flags May be 0 or {@link #DISABLE_CAR_MODE_GO_HOME}. 178 */ disableCarMode(int flags)179 public void disableCarMode(int flags) { 180 if (mService != null) { 181 try { 182 mService.disableCarMode(flags); 183 } catch (RemoteException e) { 184 throw e.rethrowFromSystemServer(); 185 } 186 } 187 } 188 189 /** 190 * Return the current running mode type. May be one of 191 * {@link Configuration#UI_MODE_TYPE_NORMAL Configuration.UI_MODE_TYPE_NORMAL}, 192 * {@link Configuration#UI_MODE_TYPE_DESK Configuration.UI_MODE_TYPE_DESK}, 193 * {@link Configuration#UI_MODE_TYPE_CAR Configuration.UI_MODE_TYPE_CAR}, 194 * {@link Configuration#UI_MODE_TYPE_TELEVISION Configuration.UI_MODE_TYPE_TELEVISION}, 195 * {@link Configuration#UI_MODE_TYPE_APPLIANCE Configuration.UI_MODE_TYPE_APPLIANCE}, 196 * {@link Configuration#UI_MODE_TYPE_WATCH Configuration.UI_MODE_TYPE_WATCH}, or 197 * {@link Configuration#UI_MODE_TYPE_VR_HEADSET Configuration.UI_MODE_TYPE_VR_HEADSET}. 198 */ getCurrentModeType()199 public int getCurrentModeType() { 200 if (mService != null) { 201 try { 202 return mService.getCurrentModeType(); 203 } catch (RemoteException e) { 204 throw e.rethrowFromSystemServer(); 205 } 206 } 207 return Configuration.UI_MODE_TYPE_NORMAL; 208 } 209 210 /** 211 * Sets the night mode. 212 * <p> 213 * The mode can be one of: 214 * <ul> 215 * <li><em>{@link #MODE_NIGHT_NO}<em> sets the device into 216 * {@code notnight} mode</li> 217 * <li><em>{@link #MODE_NIGHT_YES}</em> sets the device into 218 * {@code night} mode</li> 219 * <li><em>{@link #MODE_NIGHT_AUTO}</em> automatically switches between 220 * {@code night} and {@code notnight} based on the device's current 221 * location and certain other sensors</li> 222 * </ul> 223 * <p> 224 * <strong>Note:</strong> On API 22 and below, changes to the night mode 225 * are only effective when the {@link Configuration#UI_MODE_TYPE_CAR car} 226 * or {@link Configuration#UI_MODE_TYPE_DESK desk} mode is enabled on a 227 * device. Starting in API 23, changes to night mode are always effective. 228 * 229 * @param mode the night mode to set 230 * @see #getNightMode() 231 */ setNightMode(@ightMode int mode)232 public void setNightMode(@NightMode int mode) { 233 if (mService != null) { 234 try { 235 mService.setNightMode(mode); 236 } catch (RemoteException e) { 237 throw e.rethrowFromSystemServer(); 238 } 239 } 240 } 241 242 /** 243 * Returns the currently configured night mode. 244 * <p> 245 * May be one of: 246 * <ul> 247 * <li>{@link #MODE_NIGHT_NO}</li> 248 * <li>{@link #MODE_NIGHT_YES}</li> 249 * <li>{@link #MODE_NIGHT_AUTO}</li> 250 * <li>{@code -1} on error</li> 251 * </ul> 252 * 253 * @return the current night mode, or {@code -1} on error 254 * @see #setNightMode(int) 255 */ getNightMode()256 public @NightMode int getNightMode() { 257 if (mService != null) { 258 try { 259 return mService.getNightMode(); 260 } catch (RemoteException e) { 261 throw e.rethrowFromSystemServer(); 262 } 263 } 264 return -1; 265 } 266 267 /** 268 * @return If UI mode is locked or not. When UI mode is locked, calls to change UI mode 269 * like {@link #enableCarMode(int)} will silently fail. 270 * @hide 271 */ 272 @TestApi isUiModeLocked()273 public boolean isUiModeLocked() { 274 if (mService != null) { 275 try { 276 return mService.isUiModeLocked(); 277 } catch (RemoteException e) { 278 throw e.rethrowFromSystemServer(); 279 } 280 } 281 return true; 282 } 283 284 /** 285 * Returns whether night mode is locked or not. 286 * <p> 287 * When night mode is locked, only privileged system components may change 288 * night mode and calls from non-privileged applications to change night 289 * mode will fail silently. 290 * 291 * @return {@code true} if night mode is locked or {@code false} otherwise 292 * @hide 293 */ 294 @TestApi isNightModeLocked()295 public boolean isNightModeLocked() { 296 if (mService != null) { 297 try { 298 return mService.isNightModeLocked(); 299 } catch (RemoteException e) { 300 throw e.rethrowFromSystemServer(); 301 } 302 } 303 return true; 304 } 305 } 306