android - Simple jsoup Java HTML Parser Will Not Update TextView -
i'm attempting update textview using web data via jsoup
for reason never seems update textview table data url i'm attempting gather data from.
any suggestions?
i've looked on quite bit , cannot seem spot i'm doing wrong - i'm sure it's simple.
xml:
<relativelayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:paddingbottom="@dimen/activity_vertical_margin" android:paddingleft="@dimen/activity_horizontal_margin" android:paddingright="@dimen/activity_horizontal_margin" android:paddingtop="@dimen/activity_vertical_margin" tools:context=".mainactivity" > <textview android:layout_width="wrap_content" android:layout_height="wrap_content" android:id="@+id/textview01" android:text="@string/hello_world" /> </relativelayout> source:
public class mainactivity extends activity { textview tv; string url = "http://sheriff.org/apps/arrest/results.cfm?lname=abbott&fname=laurea"; string tr; document doc; @override public void oncreate(bundle savedinstancestate) { super.oncreate(savedinstancestate); setcontentview(r.layout.activity_main); tv = (textview) findviewbyid(r.id.textview01); new mytask().execute(url); } private class mytask extends asynctask<string, void, string> { progressdialog prog; string title = ""; @override protected void onpreexecute() { prog = new progressdialog(mainactivity.this); prog.setmessage("loading...."); prog.show(); } @override protected string doinbackground(string... params) { try { doc = jsoup.connect(params[0]).get(); element tableelement = doc.select(".datagrid").first(); elements tablerows = tableelement.select("tr"); (element row : tablerows) { elements cells = row.select("td"); if (cells.size() > 0) { system.out.println( cells.get(0).text() + "; " + cells.get(1).text() + "; " + cells .get(2).text() + "; " + cells.get(3).text()); } } } catch (ioexception e) { e.printstacktrace(); } return title; } @override protected void onpostexecute(string result) { super.onpostexecute(result); prog.dismiss(); tv.settext(result); } } } edit in response first answer - still no fix:
public class mainactivity extends activity { textview tv; string url = "http://sheriff.org/apps/arrest/results.cfm?lname=abbott&fname=laurea"; string tr; document doc; @override public void oncreate(bundle savedinstancestate) { super.oncreate(savedinstancestate); setcontentview(r.layout.activity_main); tv = (textview) findviewbyid(r.id.textview01); new mytask().execute(url); } private class mytask extends asynctask<string, void, string> { progressdialog prog; string title = ""; @override protected void onpreexecute() { prog = new progressdialog(mainactivity.this); prog.setmessage("loading...."); prog.show(); } @override protected string doinbackground(string... params) { try { doc = jsoup.connect(params[0]).get(); element tableelement = doc.select(".datagrid").first(); elements tablerows = tableelement.select("tr"); (element row : tablerows) { elements cells = row.select("td"); if (cells.size() > 0) { title = cells.get(0).text() + "; " + cells.get(1).text() + "; " + cells.get(2).text() + "; " + cells.get(3).text(); } } } catch (ioexception e) { e.printstacktrace(); } return title; } @override protected void onpostexecute(string result) { super.onpostexecute(result); prog.dismiss(); tv.settext(result); } } } i tried:
public class mainactivity extends activity { textview tv; string url = "http://sheriff.org/apps/arrest/results.cfm?lname=abbott&fname=laurea"; string tr; document doc; @override public void oncreate(bundle savedinstancestate) { super.oncreate(savedinstancestate); setcontentview(r.layout.activity_main); tv = (textview) findviewbyid(r.id.textview01); new mytask().execute(url); } private class mytask extends asynctask<string, void, string> { progressdialog prog; string title = ""; @override protected void onpreexecute() { prog = new progressdialog(mainactivity.this); prog.setmessage("loading...."); prog.show(); } @override protected string doinbackground(string... params) { try { doc = jsoup.connect(params[0]).get(); element tableelement = doc.select(".datagrid").first(); elements tablerows = tableelement.select("tr"); (element row : tablerows) { elements cells = row.select("td"); if (cells.size() > 0) { title = cells.get(0).text() + "; " + cells.get(1).text() + "; " + cells.get(2).text() + "; " + cells.get(3).text(); } } } catch (ioexception e) { e.printstacktrace(); } return title; } @override protected void onpostexecute(string title) { super.onpostexecute(title); prog.dismiss(); tv.settext(title); } } }
1) don't assign title variable.
2) don't use system.out.*. it's console programs. in android, use log
in doinbackground() change code to:
title = cells.get(0).text() + "; " + cells.get(1).text() + "; " + cells.get(2).text() + "; " + cells.get(3).text());
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