Learning notes for the Andengine introductory tutorial

Example of the main program. Launcher.examplelauncher inherits from the Expandablelistactivity list,
The main definition here is another enumeration of public enum Examplegroup and enum Example, which is usually worth learning because it is less used like them.

The code is as follows

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Enum Example { // =========================================================== Elements // =========================================================== Analogonscreencontrol (Analogonscreencontrolexample.class, R.string.example_analogonscreencontrol), Analogonscreencontrols (Analogonscreencontrolsexample.class, R.string.example_analogonscreencontrols), Animatedsprites (Animatedspritesexample.class, R.string.example_animatedsprites), Augmentedreality (Augmentedrealityexample.class, r.string.example_augmentedreality), Augmentedrealityhorizon (Augmentedrealityhorizonexample.class, R.string.example_augmentedrealityhorizon), Autoparallaxbackground (Autoparallaxbackgroundexample.class, R.string.example_autoparallaxbackground), Boundcamera (Boundcameraexample.class, R.string.example_boundcamera), Changeabletext (Changeabletextexample.class, R.string.example_changeabletext), Collisiondetection (Collisiondetectionexample.class, r.string.example_collisiondetection), Colorkeytexturesourcedecorator (Colorkeytexturesourcedecoratorexample.class, R.string.example_ Colorkeytexturesourcedecorator), Coordinateconversion (Coordinateconversionexample.class, r.string.example_coordinateconversion), Customfont (Customfontexample.class, R.string.example_customfont), Digitalonscreencontrol (Digitalonscreencontrolexample.class, R.string.example_digitalonscreencontrol), Easefunction (Easefunctionexample.class, r.string.example_easefunction), Imageformats (Imageformatsexample.class, R.string.example_imageformats), Levelloader (Levelloaderexample.class, R.string.example_levelloader), Line (Lineexample.class, R.string.example_line), Loadtexture (Loadtextureexample.class, R.string.example_loadtexture), MENU (Menuexample.class, R.string.example_menu), Modplayer (Modplayerexample.class, R.string.example_modplayer), Movingball (Movingballexample.class, R.string.example_movingball), Multiplayer (Multiplayerexample.class, R.string.example_multiplayer), Multitouch (Multitouchexample.class, R.string.example_multitouch), MUSIC (Musicexample.class, R.string.example_music), PAUSE (Pauseexample.class, R.string.example_pause), Pathmodifier (Pathmodifierexample.class, R.string.example_pathmodifier), Particlesystemnexus (Particlesystemnexusexample.class, R.string.example_particlesystemnexus), Particlesystemcool (Particlesystemcoolexample.class, R.string.example_particlesystemcool), Particlesystemsimple (Particlesystemsimpleexample.class, R.string.example_particlesystemsimple), Physicsconllisionfiltering (Physicscollisionfilteringexample.class, r.string.example_physicscollisionfiltering), Physics (Physicsexample.class, R.string.example_physics), Physicsfixedstep (Physicsfixedstepexample.class, R.string.example_physicsfixedstep), Physicsjump (Physicsjumpexample.class, R.string.example_physicsjump), Physicsrevolutejoint (Physicsrevolutejointexample.class, R.string.example_physicsrevolutejoint), Physicsremove (Physicsremoveexample.class, R.string.example_physicsremove), Pinchzoom (Pinchzoomexample.class, R.string.example_pinchzoom), RECTANGLE (Rectangleexample.class, R.string.example_rectangle), Repeatingspritebackground (Repeatingspritebackgroundexample.class, R.string.example_repeatingspritebackground), Rotation3D (Rotation3dexample.class, r.string.example_rotation3d), Shapemodifier (Shapemodifierexample.class, R.string.example_shapemodifier), Shapemodifierirregular (Shapemodifierirregularexample.class, R.string.example_shapemodifierirregular), SOUND (Soundexample.class, R.string.example_sound), Splitscreen (Splitscreenexample.class, R.string.example_splitscreen), SPRITE (Spriteexample.class, R.string.example_sprite), Spriteremove (Spriteremoveexample.class, R.string.example_spriteremove), Strokefont (Strokefontexample.class, R.string.example_strokefont), submenu (Submenuexample.class, R.string.example_submenu), TEXT (Textexample.class, R.string.example_text), Textmenu (Textmenuexample.class, R.string.example_textmenu), Textureoptions (Textureoptionsexample.class, r.string.example_textureoptions), Tmxtiledmap (Tmxtiledmapexample.class, R.string.example_tmxtiledmap), Tickertext (Tickertextexample.class, R.string.example_tickertext), Touchdrag (Touchdragexample.class, R.string.example_touchdrag), Unloadresources (Unloadresourcesexample.class, r.string.example_unloadresources), Updatetexture (Updatetextureexample.class, R.string.example_updatetexture), Xmllayout (Xmllayoutexample.class, R.string.example_xmllayout), ZOOM (Zoomexample.class, R.string.example_zoom), Benchmark_animation (Animationbenchmark.class, r.string.example_benchmark_animation), Benchmark_particlesystem (Particlesystembenchmark.class, R.string.example_benchmark_particlesystem), Benchmark_physics (Physicsbenchmark.class, R.string.example_benchmark_physics), Benchmark_shapemodifier (Shapemodifierbenchmark.class, R.string.example_benchmark_shapemodifier), Benchmark_sprite (Spritebenchmark.class, R.string.example_benchmark_sprite), Benchmark_tickertext (Tickertextbenchmark.class, R.string.example_benchmark_tickertext), App_cityradar (Cityradaractivity.class, R.string.example_app_cityradar), Game_snake (Snakegameactivity.class, R.string.example_game_snake), Game_racer (Racergameactivity.class, r.string.example_game_racer); // =========================================================== Constants // =========================================================== // =========================================================== Fields // =========================================================== Public final class<? Extends basegameactivity> CLASS; public final int nameresid; // =========================================================== Constructors // =========================================================== Private Example (final class<? extends basegameactivity> pexampleclass, final int pnameresid) { This. CLASS = Pexampleclass; This. Nameresid = Pnameresid; } // =========================================================== Getter & Setter // =========================================================== // =========================================================== Methods For/from superclass/interfaces // =========================================================== // =========================================================== Methods // =========================================================== // =========================================================== Inner and Anonymous Classes // =========================================================== }

The public final class< above;? Extends basegameactivity> CLASS; represents any type inherited from Basegameactivity, which belongs to the generic type.
Because Andengine's example programs are inherited from Basegameactivity.

The code is as follows

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public enum Examplegroup { // =========================================================== Elements // =========================================================== Simple (R.string.examplegroup_simple, Example.line, Example.rectangle, Example.sprite, Example.spriteremove), Modifier_and_animation (R.string.examplegroup_modifier_and_animation, Example.movingball, Example.shapemodifier, Example.shapemodifierirregular, Example.pathmodifier, Example.animatedsprites, Example.easefunction, Example.rotation3d), Touch (R.string.examplegroup_touch, Example.touchdrag, Example.multitouch, Example.analogonscreencontrol, Example.digitalonscreencontrol, Example.analogonscreencontrols, Example.coordinateconversion, Example.pinchzoom), Particlesystem (R.string.examplegroup_particlesystems, Example.particlesystemsimple, Example.particlesystemcool, Example.particlesystemnexus), Multiplayer (R.string.examplegroup_multiplayer, Example.multiplayer), Physics (R.string.examplegroup_physics, Example.collisiondetection, Example.physics, Example.physicsfixedstep, example.physicsconllisionfiltering, Example.physicsjump, Example.physicsrevolutejoint, Example.physicsremove), TEXT (R.string.examplegroup_text, Example.text, Example.tickertext, Example.changeabletext, Example.customfont, Example.strokefont), AUDIO (R.string.examplegroup_audio, Example.sound, Example.music, Example.modplayer), ADVANCED (r.string.examplegroup_advanced, Example.splitscreen, Example.boundcamera),//Example.augmentedreality, Example.augmentedrealityhorizon), BACKGROUND (R.string.examplegroup_background, Example.repeatingspritebackground, Example.autoparallaxbackground, Example.tmxtiledmap), Other (R.string.examplegroup_other, Example.pause, Example.menu, Example.submenu, Example.textmenu, Example.zoom, Example.imageformats, Example.textureoptions, Example.colorkeytexturesourcedecorator, Example.loadtexture, Example.UPDATETEXTURE, Example.xmllayout, Example.levelloader), APP (R.string.examplegroup_app, Example.app_cityradar), GAME (R.string.examplegroup_game, Example.game_snake, Example.game_racer), BENCHMARK (R.string.examplegroup_benchmark, Example.benchmark_sprite, Example.benchmark_shapemodifier, Example.benchmark_animation, Example.BENCHMARK_ Tickertext, Example.benchmark_particlesystem, example.benchmark_physics); // =========================================================== Constants // =========================================================== // =========================================================== Fields // =========================================================== Public final example[] examples; public final int nameresid; // =========================================================== Constructors // =========================================================== Private Examplegroup (final int pnameresid, final Example ... pexamples) { This. Nameresid = Pnameresid; This. examples = Pexamples; } // =========================================================== Getter & Setter // =========================================================== // =========================================================== Methods For/from superclass/interfaces // =========================================================== // =========================================================== Methods // =========================================================== // =========================================================== Inner and Anonymous Classes // =========================================================== }

The main program is relatively simple, no longer introduced.