Android Application Development All-in-One For Dummies, 3rd Edition

Index

Symbols

• --a statement, 270

• === operator, 265

• !== operator, 265

• {} (curly braces), 220–221, 263, 270

• == (double equal sign), 264

• ?: (Elvis operator), 209, 265

• ! (exclamation point), 271

• : : (function reference) operator, 328

• !! (non-null assertion operator), 209, 265, 298
• !is (not is) operator, 246

• ? (question mark), 216, 246

• _ (underscore), 238

A

• AAB files, building and running, 705–708
• aapt (Android Asset Packaging Tool), 89
• ABI (Application Binary Interface), 579
• abstract classes, 308–310
• abstract method, 296
• accessibility, issues with, 496
• accessing Play Store's Developer Console, 727
• Account class, 240
• actions, for notifications, 455
• actionToBeTriggered() function, 361
• activities
  • adding
    • dialog box fragments to, 426–433
    • fragments to programmatically, 415
    • fragments to using XML, 414–415
    • NavHostFragment to, 437–438
    • UI fragments to, 421–426
  • creating apps with multiple, 417–420
  • defining, 406–407
  • in lifecycles, 375, 407–409
  • managing for apps, 405–433
  • navigating between fragments and, 362–364
  • seeing in action, 417–433
  • starting, 145–151
• Activity class, 306
• activity element, 86
• activity_main.xml file, 111–112
• ad unit ID, 730
• adapter, 647–648
• Adapter class, 648–649
• adapters, working with, 499–500
• adb. See Android Debug Bridge (adb)
• adb kill-server command, 66
• add() function, 649
• adding
  • camera support using CameraX, 484–487
  • components
    • about, 103–106
    • to projects, 136–137
    • to reusable layouts, 144–145
  • constraints, 106–108
  • destinations, ...