{"id":9242,"date":"2020-01-30T21:02:19","date_gmt":"2020-01-31T00:02:19","guid":{"rendered":"https:\/\/geekblogti.wpengine.com\/?p=9242"},"modified":"2024-09-24T18:00:27","modified_gmt":"2024-09-24T21:00:27","slug":"java-android","status":"publish","type":"post","link":"https:\/\/www.geekhunter.com/pt/blog\/java-android\/","title":{"rendered":"Programando em Java Android"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u00c9 de conhecimento geral que o Java Android surgiu, provavelmente, para tornar o desenvolvimento&nbsp;mobile mais confort\u00e1vel. Nos dias atuais, <a rel=\"noreferrer noopener\" aria-label=\"Java  (abre numa nova aba)\" href=\"https:\/\/www.geekhunter.com\/pt\/blog\/tudo-sobre-java\/\" target=\"_blank\">Java <\/a>\u00e9 a linguagem mais usada para com\u00e9rcio eletr\u00f4nicos e aplica\u00e7\u00f5es simples para o sistema operacional Android, por isso essa jun\u00e7\u00e3o. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Se voc\u00ea caiu de paraquedas neste artigo, busque estudar mais a fundo sobre a linguagem para se familiarizar com a sintaxe da linguagem de programa\u00e7\u00e3o. <\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>5 melhores <a href=\"https:\/\/www.geekhunter.com\/pt\/blog\/linguagens-de-programacao-para-android\/\" target=\"_blank\" rel=\"noreferrer noopener\">linguagens de programa\u00e7\u00e3o para Android<\/a><\/p><\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\">Meu in\u00edcio com Java Android<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Com a experi\u00eancia que tive com Android, foi complicado para mim entender a parte de importar bibliotecas, classes, estender, herdar-las e, at\u00e9 mesmo, entender por que utilizar Java?  <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Refor\u00e7ando ainda, eu era apenas uma aprendiz e logo encantei pela ideia em fazer aplicativos para celulares ou explorar essa tecnologia para outros projetos, mas procurei estudar e aperfei\u00e7oar o conhecimento, sempre tendo um mentor para me orientar. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Nessa fase de aprendiz, confesso que tive muitas dificuldades com a quest\u00e3o de IDE, at\u00e9 porque busquei dominar a linguagem antes e, logo mais, conheci o Android Studio. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pesquisei suas funcionalidades e percebi que era tudo que precisava para compreender e aprofundar mais sobre esse mundo mobile.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">O que \u00e9 programa\u00e7\u00e3o em Java?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">O Java tem base na Linguagem C e \u00e9 uma das linguagens mais eficazes no desenvolvimento de programas. Tudo que usamos nos dias atuais \u00e9 em Java. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Na sua produ\u00e7\u00e3o, o compilador gera bytecode, que s\u00e3o c\u00f3digo fonte intermedi\u00e1rio, e executa por uma M\u00e1quina Virtual (JVM). A M\u00e1quina Virtual \u00e9 um programa que interpreta os bytecodes e logo efetua a compila\u00e7\u00e3o. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">O desenvolvedor precisar\u00e1 compreender o objeto criado, junto com as opera\u00e7\u00f5es que ir\u00e3o ocorrer e ser\u00e3o executadas. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A vantagem de Java \u00e9 sua portabilidade porque pode ser executada em v\u00e1rias plataformas como Windows, Mac, Linux e outros derivados.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">O que \u00e9 o Android?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u00c9 um sistema operacional que foi desenvolvido numa colabora\u00e7\u00e3o de v\u00e1rias empresas (inclusive o Google),&nbsp; conhecida como OHA. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Primeiro foi trabalhado em um desenvolvimento de uma tecnologia nova e de grande porte, at\u00e9 que surgiu a iniciativa de criar uma interface baseada em manipula\u00e7\u00e3o direta para dispositivos m\u00f3veis, atrav\u00e9s do toque sens\u00edvel na tela. Mas, atualmente, o Android est\u00e1 em smartphones e tablets.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"> Se quiserem aprofundar mais sobre essa hist\u00f3ria, est\u00e1 num artigo chamado <a href=\"https:\/\/pt.wikipedia.org\/wiki\/Android\">A hist\u00f3ria do sistema operacional Android<\/a>. <\/p>\n\n\n\n<h2 class=\"wp-block-heading\">O que eu preciso para desenvolver para o Android? <\/h2>\n\n\n\n<figure class=\"wp-block-image\"><img fetchpriority=\"high\" decoding=\"async\" width=\"750\" height=\"410\" src=\"https:\/\/www.geekhunter.com\/pt\/blog\/wp-content\/uploads\/2020\/01\/programando-para-android-2.jpeg\" alt=\"linguagem para programar android \" class=\"wp-image-9154\" srcset=\"https:\/\/www.geekhunter.com/pt/blog\/wp-content\/uploads\/2020\/01\/programando-para-android-2.jpeg 750w, https:\/\/www.geekhunter.com/pt/blog\/wp-content\/uploads\/2020\/01\/programando-para-android-2-150x82.jpeg 150w, https:\/\/www.geekhunter.com/pt/blog\/wp-content\/uploads\/2020\/01\/programando-para-android-2-100x55.jpeg 100w, https:\/\/www.geekhunter.com/pt/blog\/wp-content\/uploads\/2020\/01\/programando-para-android-2-600x328.jpeg 600w, https:\/\/www.geekhunter.com/pt/blog\/wp-content\/uploads\/2020\/01\/programando-para-android-2-450x246.jpeg 450w\" sizes=\"(max-width: 750px) 100vw, 750px\" \/><figcaption> Antes de usar Android, voc\u00ea PRECISA conhecer (ou aprender) a linguagem Java <\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Ter conhecimento em programa\u00e7\u00e3o, podendo desenvolver tanto no Windows, Linux e outros. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u00e3o se assuste, a plataforma Android tem ferramentas gratuitas e dispon\u00edveis, para ajuda no desempenho da aplica\u00e7\u00e3o que deseja come\u00e7ar.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">As tecnologias que voc\u00ea precisa instalar s\u00e3o:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>JDK&nbsp; &#8211;  Java Development Kit;<br><\/li><li>Android SDK;<br><\/li><li>IDE, recomendo o <a href=\"https:\/\/developer.android.com\/studio\"><strong>Android Studio<\/strong><\/a>. <\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">N\u00e3o fique desesperado para ter um aparelho Android em m\u00e3os! <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">O SDK inclui um simulador para rodar as aplica\u00e7\u00f5es desenvolvidas, mas antes de postar no Google Play, verifique se o prot\u00f3tipo est\u00e1 de acordo com suas expectativas e sempre teste em algum smartphone. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ent\u00e3o, se achar dif\u00edcil a programa\u00e7\u00e3o ou erros em compila\u00e7\u00f5es, n\u00e3o desista do projeto, procure achar solu\u00e7\u00f5es \u00e1geis para melhorar seu empenho, neste caso, veja tutoriais ou explica\u00e7\u00e3o sobre terminada fun\u00e7\u00e3o que est\u00e1 desenvolvendo.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Por que utilizar o Android Studio?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u00c9 a plataforma mais usadas para aprendizes que est\u00e3o querendo ter conhecimento da \u00e1rea de mobile. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Existem pessoas que criticam o Android Studio por ser pesado e por incluir bibliotecas exageradas, j\u00e1 que precisa de um computador que aguente. A <a rel=\"noreferrer noopener\" aria-label=\"documenta\u00e7\u00e3o  (abre numa nova aba)\" href=\"https:\/\/developer.android.com\/docs\" target=\"_blank\">documenta\u00e7\u00e3o <\/a>\u00e9 muito \u00fatil e pode te ajudar a entender melhor esses aspectos de otimiza\u00e7\u00e3o do ambiente porque explica os requerimentos de uma forma bem clara.&nbsp;&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Quero destacar ainda que um passo inicial para algu\u00e9m come\u00e7ar atrav\u00e9s deste sistema, precisa ter conhecimento em programa\u00e7\u00e3o e claro, l\u00f3gica.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pois, na linguagem Java podemos trabalhar o polimorfismo e entender o ramo de estender classes e herd\u00e1-las, mas o principal mesmo \u00e9 ter no\u00e7\u00e3o do que voc\u00ea est\u00e1 fazendo. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">No meu caso, atrav\u00e9s do Android Studio, aprendi fazer app de games e coloquei toda minha criatividade na aplica\u00e7\u00e3o, mas, muitas vezes, travou e tive problemas com as bibliotecas.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">O que eu fiz? Busquei entender, pesquisando e pedindo orienta\u00e7\u00e3o. Acho \u00fatil come\u00e7ar por essa plataforma de in\u00edcio e, logo mais, avan\u00e7ar em outras tecnologias no mercado.&nbsp;<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p><em>As tecnologias mais profundas s\u00e3o aquelas que desaparecem. Elas se entrela\u00e7am com o cotidiano at\u00e9 que se tornem indistingu\u00edveis dele<\/em><\/p><cite> WEISER, 1991, p. 19<\/cite><\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">Essa analogia te faz pensar que qualquer plataforma que aprendemos desde o in\u00edcio, talvez n\u00e3o seja substitu\u00edda, mas pode ter melhorias e se tornar uma ferramenta incr\u00edvel. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">O Android Studio facilita muito para aprendizagem,&nbsp;encaminhando xml com configura\u00e7\u00f5es e separado por pastas, visando o desempenho do usu\u00e1rio que ir\u00e1 mexer no software.&nbsp;&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Qual \u00e9 a import\u00e2ncia do desenvolvimento de aplicativos em Java Android?<\/h2>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" width=\"750\" height=\"410\" src=\"https:\/\/www.geekhunter.com\/pt\/blog\/wp-content\/uploads\/2020\/01\/programar-aplicativo-em-java-android.jpg\" alt=\"aplicativo para java android\" class=\"wp-image-9149\" srcset=\"https:\/\/www.geekhunter.com/pt/blog\/wp-content\/uploads\/2020\/01\/programar-aplicativo-em-java-android.jpg 750w, https:\/\/www.geekhunter.com/pt/blog\/wp-content\/uploads\/2020\/01\/programar-aplicativo-em-java-android-150x82.jpg 150w, https:\/\/www.geekhunter.com/pt/blog\/wp-content\/uploads\/2020\/01\/programar-aplicativo-em-java-android-100x55.jpg 100w, https:\/\/www.geekhunter.com/pt/blog\/wp-content\/uploads\/2020\/01\/programar-aplicativo-em-java-android-600x328.jpg 600w, https:\/\/www.geekhunter.com/pt/blog\/wp-content\/uploads\/2020\/01\/programar-aplicativo-em-java-android-450x246.jpg 450w\" sizes=\"(max-width: 750px) 100vw, 750px\" \/><figcaption> Em todos os lugares existe, pelo menos, um dispositivo rodando Java Android<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Quando se trata de desenvolvimento de um aplicativo, gera muita discuss\u00e3o sobre qual linguagem usar, certo? <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Quando programamos em Java, inclu\u00edmos o SDK para utilizar suas ferramentas dispon\u00edveis porque l\u00e1 podemos colocar toda criatividade que temos. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Entretanto, abordando que Java \u00e9 uma linguagem de programa\u00e7\u00e3o que est\u00e1 em toda parte, seja no seu celular, em ve\u00edculos, em pequenos rob\u00f4s e em muito mais, podemos concluir que a linguagem est\u00e1 rodando em quase todo lugar. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Por que o Google usa Java Android? Porque \u00e9 bem mais f\u00e1cil aprender durante o desenvolvimento orientado a objetos e tamb\u00e9m ajuda a manter um sistema com flexibilidade e ainda extens\u00edvel.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Na minha opini\u00e3o, Java \u00e9 melhor para lidar com aplica\u00e7\u00f5es Android, porque quase tudo nele est\u00e1 num celular, hardware e equipamentos eletr\u00f4nicos.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Alguns desenvolvedores dizem que Java \u00e9 lento, pesado e etc. Isso depende de qual aplica\u00e7\u00e3o ir\u00e1 fazer, ali\u00e1s, fa\u00e7a o melhor, use a criatividade e se divirta nesse mundo mobile! <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">At\u00e9 a pr\u00f3xima, turma! \ud83d\ude00<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u00c9 de conhecimento geral que o Java Android surgiu, provavelmente, para tornar o desenvolvimento&nbsp;mobile mais confort\u00e1vel. Nos dias atuais, Java \u00e9 a linguagem mais usada para com\u00e9rcio eletr\u00f4nicos e aplica\u00e7\u00f5es simples para o sistema operacional Android, por isso essa jun\u00e7\u00e3o. Se voc\u00ea caiu de paraquedas neste artigo, busque estudar mais a fundo sobre a linguagem [&hellip;]<\/p>\n","protected":false},"author":167,"featured_media":9122,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[18],"tags":[],"class_list":["post-9242","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-desenvolvimiento-de-software"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.5 (Yoast SEO v28.5) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Java Android: por que fazer um aplicativo em Android com Java?<\/title>\n<meta name=\"description\" content=\"Quer programar para dispositivos m\u00f3veis mas n\u00e3o sabe qual linguagem usar? Java Android \u00e9 a resposta! 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