{"id":101,"date":"2016-05-01T23:32:41","date_gmt":"2016-05-01T21:32:41","guid":{"rendered":"http:\/\/antek.atthost24.pl\/?p=101"},"modified":"2016-05-04T23:27:56","modified_gmt":"2016-05-04T21:27:56","slug":"zapis-danych-na-dysku","status":"publish","type":"post","link":"https:\/\/blog.lantkowiak.pl\/index.php\/2016\/05\/01\/zapis-danych-na-dysku\/","title":{"rendered":"Zapis danych na dysku"},"content":{"rendered":"<p>W dzisiejszym wpisie przedstawi\u0119 w jaki spos\u00f3b dokona\u0107 zapisu danych na pami\u0119ci wewn\u0119trznej urz\u0105dzenia.<\/p>\n<p>Pierwszym krokiem jaki musimy zrobi\u0107 to dodanie do pliku AndroidManifest.xml poni\u017cszego wpisu:<\/p>\n<pre>&lt;uses-permission android:name=\"android.permission.WRITE_EXTERNAL_STORAGE\" \/&gt;<\/pre>\n<p>Jak mo\u017cna wywnioskowa\u0107, jest to dodanie uprawnie\u0144 do zapisu danych na pami\u0119ci zewn\u0119trznej\u00a0do naszej aplikacji.<\/p>\n<p>Sam zapis pliku nie jest specjalnie skomplikowany. Stworzy\u0142em prost\u0105 metod\u0119, kt\u00f3rej zadaniem jest skopiowanie wskazane pliku do wskazanego miejsca.<\/p>\n<pre>def copyFile(src: File, dst: File) = {\r\n  try {\r\n    val inStream = new FileInputStream(src)\r\n    val outStream = new FileOutputStream(dst)\r\n    val inChannel = inStream.getChannel\r\n    val outChannel = outStream.getChannel\r\n    inChannel.transferTo(0, inChannel.size, outChannel)\r\n    inStream.close()\r\n    outStream.close()\r\n  } catch {\r\n    case e: Exception =&gt; Log.e(FileUtils.getClass.getSimpleName, e.getMessage, e)\r\n  }\r\n}<\/pre>\n<p>Dlaczego kopiowanie? W swojej aplikacji zapisuje dwa rodzaje plik\u00f3w:<\/p>\n<ul>\n<li>zrobione zdj\u0119cia, kt\u00f3re s\u0105 zapisywane do pliku tymczasowego; w\u0142a\u015bnie ten plik kopiuje to folderu z dokumentami dla aplikacji<\/li>\n<li>pliki wskazane bezpo\u015brednio przez u\u017cytkownika; w tym przypadku wskazany plik jest kopiowany do folderu z plikami aplikacji<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>W dzisiejszym wpisie przedstawi\u0119 w jaki spos\u00f3b dokona\u0107 zapisu danych na pami\u0119ci wewn\u0119trznej urz\u0105dzenia. Pierwszym krokiem jaki musimy zrobi\u0107 to dodanie do pliku AndroidManifest.xml poni\u017cszego wpisu: &lt;uses-permission android:name=&#8221;android.permission.WRITE_EXTERNAL_STORAGE&#8221;&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2,6],"tags":[5,3,4],"class_list":["post-101","post","type-post","status-publish","format-standard","hentry","category-daj-sie-poznac","category-simple-document-manager","tag-android","tag-dajsiepoznac","tag-sdm"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Zapis danych na dysku - Lukasz Antkowiak&#039;s blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/blog.lantkowiak.pl\/index.php\/2016\/05\/01\/zapis-danych-na-dysku\/\" \/>\n<meta property=\"og:locale\" content=\"pl_PL\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Zapis danych na dysku - Lukasz Antkowiak&#039;s blog\" \/>\n<meta property=\"og:description\" content=\"W dzisiejszym wpisie przedstawi\u0119 w jaki spos\u00f3b dokona\u0107 zapisu danych na pami\u0119ci wewn\u0119trznej urz\u0105dzenia. 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