1/* 2 * Copyright (C) 2007 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 17package android.content.pm; 18 19import android.os.Parcel; 20import android.os.Parcelable; 21import android.util.Printer; 22 23/** 24 * Information you can retrieve about a particular application 25 * activity or receiver. This corresponds to information collected 26 * from the AndroidManifest.xml's <activity> and 27 * <receiver> tags. 28 */ 29public class ActivityInfo extends ComponentInfo 30 implements Parcelable { 31 /** 32 * A style resource identifier (in the package's resources) of this 33 * activity's theme. From the "theme" attribute or, if not set, 0. 34 */ 35 public int theme; 36 37 /** 38 * Constant corresponding to <code>standard</code> in 39 * the {@link android.R.attr#launchMode} attribute. 40 */ 41 public static final int LAUNCH_MULTIPLE = 0; 42 /** 43 * Constant corresponding to <code>singleTop</code> in 44 * the {@link android.R.attr#launchMode} attribute. 45 */ 46 public static final int LAUNCH_SINGLE_TOP = 1; 47 /** 48 * Constant corresponding to <code>singleTask</code> in 49 * the {@link android.R.attr#launchMode} attribute. 50 */ 51 public static final int LAUNCH_SINGLE_TASK = 2; 52 /** 53 * Constant corresponding to <code>singleInstance</code> in 54 * the {@link android.R.attr#launchMode} attribute. 55 */ 56 public static final int LAUNCH_SINGLE_INSTANCE = 3; 57 /** 58 * The launch mode style requested by the activity. From the 59 * {@link android.R.attr#launchMode} attribute, one of 60 * {@link #LAUNCH_MULTIPLE}, 61 * {@link #LAUNCH_SINGLE_TOP}, {@link #LAUNCH_SINGLE_TASK}, or 62 * {@link #LAUNCH_SINGLE_INSTANCE}. 63 */ 64 public int launchMode; 65 66 /** 67 * Optional name of a permission required to be able to access this 68 * Activity. From the "permission" attribute. 69 */ 70 public String permission; 71 72 /** 73 * The affinity this activity has for another task in the system. The 74 * string here is the name of the task, often the package name of the 75 * overall package. If null, the activity has no affinity. Set from the 76 * {@link android.R.attr#taskAffinity} attribute. 77 */ 78 public String taskAffinity; 79 80 /** 81 * If this is an activity alias, this is the real activity class to run 82 * for it. Otherwise, this is null. 83 */ 84 public String targetActivity; 85 86 /** 87 * Bit in {@link #flags} indicating whether this activity is able to 88 * run in multiple processes. If 89 * true, the system may instantiate it in the some process as the 90 * process starting it in order to conserve resources. If false, the 91 * default, it always runs in {@link #processName}. Set from the 92 * {@link android.R.attr#multiprocess} attribute. 93 */ 94 public static final int FLAG_MULTIPROCESS = 0x0001; 95 /** 96 * Bit in {@link #flags} indicating that, when the activity's task is 97 * relaunched from home, this activity should be finished. 98 * Set from the 99 * {@link android.R.attr#finishOnTaskLaunch} attribute. 100 */ 101 public static final int FLAG_FINISH_ON_TASK_LAUNCH = 0x0002; 102 /** 103 * Bit in {@link #flags} indicating that, when the activity is the root 104 * of a task, that task's stack should be cleared each time the user 105 * re-launches it from home. As a result, the user will always 106 * return to the original activity at the top of the task. 107 * This flag only applies to activities that 108 * are used to start the root of a new task. Set from the 109 * {@link android.R.attr#clearTaskOnLaunch} attribute. 110 */ 111 public static final int FLAG_CLEAR_TASK_ON_LAUNCH = 0x0004; 112 /** 113 * Bit in {@link #flags} indicating that, when the activity is the root 114 * of a task, that task's stack should never be cleared when it is 115 * relaunched from home. Set from the 116 * {@link android.R.attr#alwaysRetainTaskState} attribute. 117 */ 118 public static final int FLAG_ALWAYS_RETAIN_TASK_STATE = 0x0008; 119 /** 120 * Bit in {@link #flags} indicating that the activity's state 121 * is not required to be saved, so that if there is a failure the 122 * activity will not be removed from the activity stack. Set from the 123 * {@link android.R.attr#stateNotNeeded} attribute. 124 */ 125 public static final int FLAG_STATE_NOT_NEEDED = 0x0010; 126 /** 127 * Bit in {@link #flags} that indicates that the activity should not 128 * appear in the list of recently launched activities. Set from the 129 * {@link android.R.attr#excludeFromRecents} attribute. 130 */ 131 public static final int FLAG_EXCLUDE_FROM_RECENTS = 0x0020; 132 /** 133 * Bit in {@link #flags} that indicates that the activity can be moved 134 * between tasks based on its task affinity. Set from the 135 * {@link android.R.attr#allowTaskReparenting} attribute. 136 */ 137 public static final int FLAG_ALLOW_TASK_REPARENTING = 0x0040; 138 /** 139 * Bit in {@link #flags} indicating that, when the user navigates away 140 * from an activity, it should be finished. 141 * Set from the 142 * {@link android.R.attr#noHistory} attribute. 143 */ 144 public static final int FLAG_NO_HISTORY = 0x0080; 145 /** 146 * Bit in {@link #flags} indicating that, when a request to close system 147 * windows happens, this activity is finished. 148 * Set from the 149 * {@link android.R.attr#finishOnCloseSystemDialogs} attribute. 150 */ 151 public static final int FLAG_FINISH_ON_CLOSE_SYSTEM_DIALOGS = 0x0100; 152 /** 153 * Options that have been set in the activity declaration in the 154 * manifest: {@link #FLAG_MULTIPROCESS}, 155 * {@link #FLAG_FINISH_ON_TASK_LAUNCH}, {@link #FLAG_CLEAR_TASK_ON_LAUNCH}, 156 * {@link #FLAG_ALWAYS_RETAIN_TASK_STATE}, 157 * {@link #FLAG_STATE_NOT_NEEDED}, {@link #FLAG_EXCLUDE_FROM_RECENTS}, 158 * {@link #FLAG_ALLOW_TASK_REPARENTING}, {@link #FLAG_NO_HISTORY}, 159 * {@link #FLAG_FINISH_ON_CLOSE_SYSTEM_DIALOGS}. 160 */ 161 public int flags; 162 163 /** 164 * Constant corresponding to <code>unspecified</code> in 165 * the {@link android.R.attr#screenOrientation} attribute. 166 */ 167 public static final int SCREEN_ORIENTATION_UNSPECIFIED = -1; 168 /** 169 * Constant corresponding to <code>landscape</code> in 170 * the {@link android.R.attr#screenOrientation} attribute. 171 */ 172 public static final int SCREEN_ORIENTATION_LANDSCAPE = 0; 173 /** 174 * Constant corresponding to <code>portrait</code> in 175 * the {@link android.R.attr#screenOrientation} attribute. 176 */ 177 public static final int SCREEN_ORIENTATION_PORTRAIT = 1; 178 /** 179 * Constant corresponding to <code>user</code> in 180 * the {@link android.R.attr#screenOrientation} attribute. 181 */ 182 public static final int SCREEN_ORIENTATION_USER = 2; 183 /** 184 * Constant corresponding to <code>behind</code> in 185 * the {@link android.R.attr#screenOrientation} attribute. 186 */ 187 public static final int SCREEN_ORIENTATION_BEHIND = 3; 188 /** 189 * Constant corresponding to <code>sensor</code> in 190 * the {@link android.R.attr#screenOrientation} attribute. 191 */ 192 public static final int SCREEN_ORIENTATION_SENSOR = 4; 193 194 /** 195 * Constant corresponding to <code>sensor</code> in 196 * the {@link android.R.attr#screenOrientation} attribute. 197 */ 198 public static final int SCREEN_ORIENTATION_NOSENSOR = 5; 199 /** 200 * The preferred screen orientation this activity would like to run in. 201 * From the {@link android.R.attr#screenOrientation} attribute, one of 202 * {@link #SCREEN_ORIENTATION_UNSPECIFIED}, 203 * {@link #SCREEN_ORIENTATION_LANDSCAPE}, 204 * {@link #SCREEN_ORIENTATION_PORTRAIT}, 205 * {@link #SCREEN_ORIENTATION_USER}, 206 * {@link #SCREEN_ORIENTATION_BEHIND}, 207 * {@link #SCREEN_ORIENTATION_SENSOR}, 208 * {@link #SCREEN_ORIENTATION_NOSENSOR}. 209 */ 210 public int screenOrientation = SCREEN_ORIENTATION_UNSPECIFIED; 211 212 /** 213 * Bit in {@link #configChanges} that indicates that the activity 214 * can itself handle changes to the IMSI MCC. Set from the 215 * {@link android.R.attr#configChanges} attribute. 216 */ 217 public static final int CONFIG_MCC = 0x0001; 218 /** 219 * Bit in {@link #configChanges} that indicates that the activity 220 * can itself handle changes to the IMSI MNC. Set from the 221 * {@link android.R.attr#configChanges} attribute. 222 */ 223 public static final int CONFIG_MNC = 0x0002; 224 /** 225 * Bit in {@link #configChanges} that indicates that the activity 226 * can itself handle changes to the locale. Set from the 227 * {@link android.R.attr#configChanges} attribute. 228 */ 229 public static final int CONFIG_LOCALE = 0x0004; 230 /** 231 * Bit in {@link #configChanges} that indicates that the activity 232 * can itself handle changes to the touchscreen type. Set from the 233 * {@link android.R.attr#configChanges} attribute. 234 */ 235 public static final int CONFIG_TOUCHSCREEN = 0x0008; 236 /** 237 * Bit in {@link #configChanges} that indicates that the activity 238 * can itself handle changes to the keyboard type. Set from the 239 * {@link android.R.attr#configChanges} attribute. 240 */ 241 public static final int CONFIG_KEYBOARD = 0x0010; 242 /** 243 * Bit in {@link #configChanges} that indicates that the activity 244 * can itself handle changes to the keyboard or navigation being hidden/exposed. 245 * Note that inspite of the name, this applies to the changes to any 246 * hidden states: keyboard or navigation. 247 * Set from the {@link android.R.attr#configChanges} attribute. 248 */ 249 public static final int CONFIG_KEYBOARD_HIDDEN = 0x0020; 250 /** 251 * Bit in {@link #configChanges} that indicates that the activity 252 * can itself handle changes to the navigation type. Set from the 253 * {@link android.R.attr#configChanges} attribute. 254 */ 255 public static final int CONFIG_NAVIGATION = 0x0040; 256 /** 257 * Bit in {@link #configChanges} that indicates that the activity 258 * can itself handle changes to the screen orientation. Set from the 259 * {@link android.R.attr#configChanges} attribute. 260 */ 261 public static final int CONFIG_ORIENTATION = 0x0080; 262 /** 263 * Bit in {@link #configChanges} that indicates that the activity 264 * can itself handle changes to the screen layout. Set from the 265 * {@link android.R.attr#configChanges} attribute. 266 */ 267 public static final int CONFIG_SCREEN_LAYOUT = 0x0100; 268 /** 269 * Bit in {@link #configChanges} that indicates that the activity 270 * can itself handle the ui mode. Set from the 271 * {@link android.R.attr#configChanges} attribute. 272 */ 273 public static final int CONFIG_UI_MODE = 0x0200; 274 /** 275 * Bit in {@link #configChanges} that indicates that the activity 276 * can itself handle changes to the font scaling factor. Set from the 277 * {@link android.R.attr#configChanges} attribute. This is 278 * not a core resource configutation, but a higher-level value, so its 279 * constant starts at the high bits. 280 */ 281 public static final int CONFIG_FONT_SCALE = 0x40000000; 282 283 /** 284 * Bit mask of kinds of configuration changes that this activity 285 * can handle itself (without being restarted by the system). 286 * Contains any combination of {@link #CONFIG_FONT_SCALE}, 287 * {@link #CONFIG_MCC}, {@link #CONFIG_MNC}, 288 * {@link #CONFIG_LOCALE}, {@link #CONFIG_TOUCHSCREEN}, 289 * {@link #CONFIG_KEYBOARD}, {@link #CONFIG_NAVIGATION}, 290 * {@link #CONFIG_ORIENTATION}, and {@link #CONFIG_SCREEN_LAYOUT}. Set from the 291 * {@link android.R.attr#configChanges} attribute. 292 */ 293 public int configChanges; 294 295 /** 296 * The desired soft input mode for this activity's main window. 297 * Set from the {@link android.R.attr#windowSoftInputMode} attribute 298 * in the activity's manifest. May be any of the same values allowed 299 * for {@link android.view.WindowManager.LayoutParams#softInputMode 300 * WindowManager.LayoutParams.softInputMode}. If 0 (unspecified), 301 * the mode from the theme will be used. 302 */ 303 public int softInputMode; 304 305 public ActivityInfo() { 306 } 307 308 public ActivityInfo(ActivityInfo orig) { 309 super(orig); 310 theme = orig.theme; 311 launchMode = orig.launchMode; 312 permission = orig.permission; 313 taskAffinity = orig.taskAffinity; 314 targetActivity = orig.targetActivity; 315 flags = orig.flags; 316 screenOrientation = orig.screenOrientation; 317 configChanges = orig.configChanges; 318 softInputMode = orig.softInputMode; 319 } 320 321 /** 322 * Return the theme resource identifier to use for this activity. If 323 * the activity defines a theme, that is used; else, the application 324 * theme is used. 325 * 326 * @return The theme associated with this activity. 327 */ 328 public final int getThemeResource() { 329 return theme != 0 ? theme : applicationInfo.theme; 330 } 331 332 public void dump(Printer pw, String prefix) { 333 super.dumpFront(pw, prefix); 334 if (permission != null) { 335 pw.println(prefix + "permission=" + permission); 336 } 337 pw.println(prefix + "taskAffinity=" + taskAffinity 338 + " targetActivity=" + targetActivity); 339 if (launchMode != 0 || flags != 0 || theme != 0) { 340 pw.println(prefix + "launchMode=" + launchMode 341 + " flags=0x" + Integer.toHexString(flags) 342 + " theme=0x" + Integer.toHexString(theme)); 343 } 344 if (screenOrientation != SCREEN_ORIENTATION_UNSPECIFIED 345 || configChanges != 0 || softInputMode != 0) { 346 pw.println(prefix + "screenOrientation=" + screenOrientation 347 + " configChanges=0x" + Integer.toHexString(configChanges) 348 + " softInputMode=0x" + Integer.toHexString(softInputMode)); 349 } 350 super.dumpBack(pw, prefix); 351 } 352 353 public String toString() { 354 return "ActivityInfo{" 355 + Integer.toHexString(System.identityHashCode(this)) 356 + " " + name + "}"; 357 } 358 359 public int describeContents() { 360 return 0; 361 } 362 363 public void writeToParcel(Parcel dest, int parcelableFlags) { 364 super.writeToParcel(dest, parcelableFlags); 365 dest.writeInt(theme); 366 dest.writeInt(launchMode); 367 dest.writeString(permission); 368 dest.writeString(taskAffinity); 369 dest.writeString(targetActivity); 370 dest.writeInt(flags); 371 dest.writeInt(screenOrientation); 372 dest.writeInt(configChanges); 373 dest.writeInt(softInputMode); 374 } 375 376 public static final Parcelable.Creator<ActivityInfo> CREATOR 377 = new Parcelable.Creator<ActivityInfo>() { 378 public ActivityInfo createFromParcel(Parcel source) { 379 return new ActivityInfo(source); 380 } 381 public ActivityInfo[] newArray(int size) { 382 return new ActivityInfo[size]; 383 } 384 }; 385 386 private ActivityInfo(Parcel source) { 387 super(source); 388 theme = source.readInt(); 389 launchMode = source.readInt(); 390 permission = source.readString(); 391 taskAffinity = source.readString(); 392 targetActivity = source.readString(); 393 flags = source.readInt(); 394 screenOrientation = source.readInt(); 395 configChanges = source.readInt(); 396 softInputMode = source.readInt(); 397 } 398} 399