Java ã®ç¥èãã©ãã«é©çšããããŸã 決ããŠããªã人ã«ã¯ããã®èšäºãééããªã圹ç«ã¡ãŸãããã®èšäºã§ã¯ãAndroidéçºãªã©ã®æ¹åæ§ã«ã€ããŠèª¬æããŠããŸããç§ã Android éçºè
ã«ãªããŸã§ã®ç©èªãAndroid éçºãéžæããããã®ãã³ããšå±æããå
¥ããã ããïŒ
JavaRush åŠçã®çãããããã«ã¡ã¯ïŒçããã®å€ãã¯ãIT åéã®ã©ã®æ¥çã§ç§ãã¡ã®å€§å¥œã㪠Java ã䜿çšãããŠãããããã§ã«ãåãã§ãããããã§ã«æ±ºæããéžæãããŠããæ¹ããããããããŸããããã®èšäºã§ã¯ãç§ã Android éçºè
ã«ãªã£ãçµç·¯ã説æããŸãããã®æ¹åæ§ãæãææã§ãããšç§ãèããçç±ã説æããŸããAndroidéçºãšã¯äœãªã®ãããããããã解説ããŸãããããŠãã¡ãããAndroid éçºè
ãšããŠã®ãã£ãªã¢ãããŸãââã¹ã¿ãŒããããããã®ãã³ããå
±æããŸãã
äž»ãªæè¡ããŒã«ã Java ã§ãããã¹ãŠã®åéã®äžã§ãAndroid éçºã¯ããã®ç¹å®ã®ããã°ã©ãã³ã°èšèªã®ç¥èãæãèŠæ±ãããŸãããAndroid ã® Java æ©èœã®å€ãã¯åœ¹ã«ç«ããªããã䜿çšãããŠãããããã®å€ã㯠Gradle ãã«ããŒã®ç¹å®ã®ããŒãžã§ã³ã§ã¯å®å
šã«é€å€ãããŠããŸãããã®ç¹ã«é¢ããŠãJava èªäœã®ç¥èã®å
¥éåºæºã¯ãJavaRush ã³ãŒã¹ (Java ã³ã¢ãš Java æ§æ) ãå®äºããã¬ãã«ã§ãããã¡ããããã«ãã¹ã¬ãããç解ããããšãå¿ããŠã¯ãªããŸãããããã§ã¯ããã®ãããªçµéšãéåžžã«åœ¹ã«ç«ã¡ãŸãããã®ãã㪠Java ã®ç¥èãããã°ãããªãèªä¿¡ãæã€ããšãã§ããã§ããããAndroid ã® UI (ãŠãŒã¶ãŒ ã€ã³ã¿ãŒãã§ã€ã¹) éšåãèŠãŠã¿ãŸããããã¢ããªã±ãŒã·ã§ã³èŠçŽ ã®ã¬ã€ã¢ãŠããŸãã¯é
眮ã¯ãXML ã¬ã€ã€ãŒã䜿çšããŠå®è¡ãããŸããããã§ãæåŸ
ãããçµæãåŸãã«ã¯ãããŸããŸãªã¿ã°ãçµã¿åãããå¿
èŠããããŸããHTML ã¬ã€ã¢ãŠããæ±ã£ãããšãããå Žåã¯ãããã«ã³ããæŽããã§ããããããããHTML ã«è©³ãããªããŠããããã«ã€ããŠã¯äœãè€éã§ã¯ãããŸããããã®ãããã¯ã«é¢ããè³æã¯ã€ã³ã¿ãŒãããäžã«ãããããããŸããAndroid Studio IDE ã® XML ããŒã¯ã¢ããã®äŸ:
次ã«éèŠãªç¹ã¯ãgit ããŒãžã§ã³ç®¡çã·ã¹ãã ã®ç¥èãšç解ã§ãããã®ãã¯ãããžãŒãªã㧠Android ã¢ããªã±ãŒã·ã§ã³ãéçºããããšãæ³åããã®ã¯å°é£ã§ãããã ããããã§ã¯é«åºŠãªå°é家ã§ããå¿
èŠã¯ãããŸãããåå¿è
ãšããŠããªããžããªã«å¯ŸããŠè€éãªæäœãå®è¡ããå¿
èŠã¯ã»ãšãã©ãããŸããããŸããã¿ãŒããã«ã䜿çšããŠã³ãã³ããå
¥åãç¶ããããšãæ
£ããŠããããgit ã䜿çšããããšããŸãã«ãããæå³ããå Žåã¯ã人æ°ã®ããã°ã©ãã£ã«ã« ã·ã§ã«SourceTreeããããŸããããã¯ãã¹ãŠã®ãã©ã³ããæç»ããèªåãã©ãã«ããã®ããæ確ã«ç解ããŸããããŠããã㧠Android éçºã®æ¹åæ§ãéžæããèŠéãã«ã€ããŠè©±ããŸããããäžèšã«ãããããããAndroid ã®åŠç¿ãžã®æ·å±
ã¯ããªãäœããã®ã®ããã®èåŸã«ã¯å±±ã»ã©ã®æ©äŒãšéçºã®éçã暪ããã£ãŠããŸããAndroid OS ã¯ãããªãæ¥éã«éçºãããŠãããã©ââãããã©ãŒã ã§ããã»ãŒæ¯å¹Žæ°ããããŒãžã§ã³ããªãªãŒã¹ããããŠãŒã¶ãŒã«ã¯æ°æ©èœããéçºè
ã«ã¯ããŸããŸãªã¡ãªãããæäŸãããŸãããã®ç¹ã«ãããŠãããªãã®ä»äºãç¹å®ã®å®å®ããŒãžã§ã³ããµããŒããããšããã«ãŒãã³ã«ãªãããšã¯æ±ºããŠãããŸãããåžžã«æ°ãããã®ãååšãã移è¡ãã¹ãå Žæãåžžã«ååšããŸããããšãã°ãå°ãåã« Google 㯠Android ã®å
¬åŒéçºèšèªãšã㊠kotlin ãçºè¡šããŸããããŸããMVVM (Model-View-ViewModel) èšèšãã¿ãŒã³ã䜿çšãã Android ã¢ããªã±ãŒã·ã§ã³ã®æ°ããã¢ãŒããã¯ãã£ã玹ä»ããŸããããã©ãããã©ãŒã ã®äººæ°ãå¿ããªãã§ãã ããã
ãã£ãªã¢ã®æé·ãšãã芳ç¹ããèŠããšãæåã¯ãã絊æã®ããã«ã³ãŒããæžãããã°ããããŠããå¥ã®çµŠæã®ããã«ã³ãŒããæžãããšãã£ãããšãç¹°ãè¿ãå¿
èŠããªããªããŸããæè¿äººæ°ã®ããžã·ã§ã³ã¯ãã¢ããªã±ãŒã·ã§ã³ãç£ç£ããã³èšèšãããã®ã¢ãŒããã¯ãã£ã®ããžã§ã³ãæšé²ããããšãä»»åãšããã¢ãŒããã¯ãã®ããžã·ã§ã³ã§ãããã¶ã€ã³ãã¿ãŒã³ã«ã€ããŠã®é©åãªç¥èãããã°ããããã®æã¯éãããã§ããããAndroid ãå®è¡ããŠããã¬ãžã§ãããããã€ã¹ãå€æ°ããããšãããã¢ãã€ã« ã¢ããªã±ãŒã·ã§ã³ã®ã¿ãäœæããå¿
èŠã¯ãªãããšãããããŸããæèšããã¬ããè»ãããã«ã¯å·èµåº«çšã®ããã°ã©ã ãéçºã§ããŸããã芧ã®ãšãããå€ãã®èŠéããããããã®ãªã¹ããç¶ããããšã¯å¯èœã§ãããèšäºã®é·ããããªãé·ããªã£ãŠããŸããšæããŸããããããããããã¹ãŠã®å¯èœæ§ãçŸå®ã«ããããã«ãããã€ãã®ãã³ããå
±æããããšæããŸããäžã§è¿°ã¹ãããã«ãAndroid ã¯ãããªãã®ã¹ããŒãã§éçºãããŠããŸãããå€ãã®éçºèŠçŽ ã¯åã«æ代é
ãã«ãªãã€ã€ãããŸããå匷ããŠæéãç¡é§ã«ããªãã§ãã ãããããããããããã¯ãã§ã«æ°ãããã®ã«çœ®ãæããããŠãããããããææ°ã®ã¢ãããŒããç 究ããããšã«æéãè²»ããããšããå§ãããŸããèªåãããé·ããã®åéã§åããŠãã人ã®ã¢ããã€ã¹ã«ã¯å¿
ãè³ãåŸããŠãã ãããå Žåã«ãã£ãŠã¯ãGoogle ã®ã©ã®æ
å ±ãããã¢ããã€ã¹ã®æ¹ã䟡å€ãããããšããããŸãããããŠããã®ãããªäººãã¡ã«ã¢ããã€ã¹ãæ±ããããšãæããªãã§ãã ãããAndroid ã®äžçã«é¢ããè¿œå æ
å ±ã®ãœãŒã¹ãèŠã€ããŠãã ãããããšãã°ãHabréãä»ã®äººæ°ã®ãã IT ã³ãã¥ããã£ã«é¢ããã¢ãã€ã«éçºè
ã®èšäºã®ãã€ãžã§ã¹ããªã©ã§ããããã§çµãããŸããç§ã®èšäºã Android éçºã®äžçãæ³åããã®ã«åœ¹ç«ã¡ã圹ç«ã€ããšãåŠã¹ãããšãé¡ã£ãŠããŸã =) ã³ã¡ã³ãã«ãã£ãŒãããã¯ãæžããããããããïŒãã§ãµããŒããããããŠãã ãããçããã«æè¬ããŸããJava ã®ã©ã®æ¹åã§ã幞éãç¥ããŸãã
GO TO FULL VERSION