{"id":132,"date":"2016-05-15T15:38:29","date_gmt":"2016-05-15T13:38:29","guid":{"rendered":"http:\/\/antek.atthost24.pl\/?p=132"},"modified":"2016-05-25T01:47:05","modified_gmt":"2016-05-24T23:47:05","slug":"datepicker-w-androidzie","status":"publish","type":"post","link":"https:\/\/blog.lantkowiak.pl\/index.php\/2016\/05\/15\/datepicker-w-androidzie\/","title":{"rendered":"DatePicker w Androidzie"},"content":{"rendered":"<p>Kolejnym ekranem, nad kt\u00f3rym b\u0119d\u0119 pracowa\u0142 jest zaawansowane wyszukiwanie dokument\u00f3w. Przez s\u0142owo 'zaawansowane&#8217; rozumiem co\u015b wi\u0119cej ni\u017c tylko wyszukiwanie po tagach, po kt\u00f3rych mo\u017cemy wyszuiwa\u0107 na g\u0142\u00f3wnym ekranie. Chc\u0119 dodatkow zaimplementowa\u0107 mo\u017cliwo\u015b\u0107 wyszukiwania po tytu\u0142ach dokument\u00f3w czy po datach kiedy zosta\u0142y dodane.<\/p>\n<p>W\u0142a\u015bnie do wyszukiwania po datach postanowi\u0142em u\u017cy\u0107 datepicker&#8217;a.<\/p>\n<p>W formularzu chc\u0119 mie\u0107 dwie kontrolki:<\/p>\n<ul>\n<li>pole tekstowe, gdzie b\u0119dzie mo\u017cna r\u0119cznie wpisa\u0107 date<\/li>\n<li>ikonka kalendarza, w kt\u00f3r\u0105 jak klikniemy pojawi nam si\u0119 nasz datepicker, a wybrana data zostanie zapisana we wcze\u015bniej wspomnianym polu tekstowym<\/li>\n<\/ul>\n<p>Czyli na pocz\u0105tku stworzy\u0142em dwie wcze\u015bniej wspomniane kontrolki:<\/p>\n<pre>&lt;EditText android:id=\"@+id\/from_date\"\r\n    android:layout_width=\"match_parent\"\r\n    android:layout_height=\"wrap_content\"\r\n    android:inputType=\"text\"\r\n    android:hint=\"form date\" \/&gt;\r\n\r\n&lt;Button\r\n    android:id=\"@+id\/form_date_datepicker\"\r\n    android:layout_width=\"25sp\"\r\n    android:layout_height=\"25sp\"\r\n    android:background=\"@android:drawable\/ic_menu_my_calendar\"\r\n    android:onClick=\"datePicker\" \/&gt;<\/pre>\n<p>Pierwsza kontrolka to zwyczajne pole tekstowe. Druga kontrolka to przycisk, kt\u00f3ry po klikni\u0119ciu wywo\u0142a metod\u0119 datePicker. Metoda ta wygl\u0105da w nast\u0119puj\u0105cy spos\u00f3b:<\/p>\n<pre>def datePicker(view: View): Unit = {\r\n  showDialog(datePickerCode)\r\n}<\/pre>\n<p>Gdzie\u00a0datePickerCode jest zdefiniowanym w aplikacji kodem dla danej akcji czyli po prostu liczba typu Int.<\/p>\n<p>Wywo\u0142anie metody showDialog(Int) wywo\u0142a metod\u0119 onCreateDialog, kt\u00f3ra u mnie wyglada nast\u0119puj\u0105co:<\/p>\n<pre>override protected def onCreateDialog(id: Int): Dialog = {\r\n  if (id == datePickerCode) {\r\n    val now = Calendar.getInstance()\r\n    return new DatePickerDialog(this, new DateListener(findViewById(R.id.from_date).asInstanceOf[EditText]), now.get(Calendar.YEAR), now.get(Calendar.MONTH), now.get(Calendar.DAY_OF_MONTH))\r\n  }\r\n  null\r\n}<\/pre>\n<p>Akcje wykonywane w tej metodzie s\u0105 dosy\u0107 proste. W przypadku gdy metoda zostanie wywo\u0142ana z naszym kodem tworzymy DatePickerDialog z nasz\u0105 implementacj\u0105\u00a0OnDateSetListener. U mnie wygl\u0105da to nast\u0119puj\u0105co:<\/p>\n<pre>class DateListener(editText: EditText) extends DatePickerDialog.OnDateSetListener {\r\n  override def onDateSet(view: DatePicker, year: Int, monthOfYear: Int, dayOfMonth: Int): Unit = {\r\n    editText.setText(year + \"-\" + monthOfYear + \"-\" + dayOfMonth)\r\n  }\r\n}<\/pre>\n<p>Wydaj\u0119 mi si\u0119, ze kod jest na tyle prosty oraz intuicyjny, \u017ce nie b\u0119d\u0119 bardziej szczeg\u00f3\u0142owo opisywa\u0142 tych funkcji oraz klasy \ud83d\ude42<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Kolejnym ekranem, nad kt\u00f3rym b\u0119d\u0119 pracowa\u0142 jest zaawansowane wyszukiwanie dokument\u00f3w. Przez s\u0142owo 'zaawansowane&#8217; rozumiem co\u015b wi\u0119cej ni\u017c tylko wyszukiwanie po tagach, po kt\u00f3rych mo\u017cemy wyszuiwa\u0107 na g\u0142\u00f3wnym ekranie&#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-132","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>DatePicker w Androidzie - 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\/15\/datepicker-w-androidzie\/\" \/>\n<meta property=\"og:locale\" content=\"pl_PL\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"DatePicker w Androidzie - Lukasz Antkowiak&#039;s blog\" \/>\n<meta property=\"og:description\" content=\"Kolejnym ekranem, nad kt\u00f3rym b\u0119d\u0119 pracowa\u0142 jest zaawansowane wyszukiwanie dokument\u00f3w. 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