android - Application crashes when program goes from one activity to another -

-

i try launch application menuactivity recipesactivity. in recipesactivity try select elements table, create in database class (database.java). table empty. debugger can't me, don't know why application crashes, maybe because tables empty now.

part of menuactivity.java

    case r.id.recipes:     case r.id.iconrecipes:         intent i2 = new intent(this, recipesactivity.class);         this.startactivity(i2);         break;

part of recipesactivity.java

public class recipesactivity extends activity implements onclicklistener {  static final public int addingrecipe = 0; static final public int editingrecipe = 1; //static final public string editrecipe = "editrecipe"; static final public string recipeid = "recipeid"; static final public string showrecipe = "showrecipe"; linearlayout ll; database sqh; sqlitedatabase sqdb;  @override protected void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     setcontentview(r.layout.activity_recipes);  ll = (linearlayout)findviewbyid(r.id.llrecipes);  sqh = new database(this);  sqdb = sqh.getwritabledatabase();         cursor cursor = sqdb.rawquery("select _id, name, doctor disease", null);  while (cursor.movetonext()) {      linearlayout ll2 = new linearlayout(this);     ll2.setorientation(linearlayout.horizontal);     final textview tv = new textview(this);     tv.setid(cursor.getint(cursor.getcolumnindex("_id")));     tv.setlayoutparams(new layoutparams(layoutparams.wrap_content, layoutparams.wrap_content));     string disease = cursor.getstring(cursor.getcolumnindex("name"));     string doctor = cursor.getstring(cursor.getcolumnindex("doctor"));     tv.settext(disease +"\nВрач: "+ doctor);     ll2.addview(tv);     imagebutton edit = new imagebutton(this);     edit.setid(cursor.getint(cursor.getcolumnindex("_id")));     edit.setclickable(true);     edit.setonclicklistener(new onclicklistener() {         @override         public void onclick(view v) {             // todo auto-generated method stub             //textview tv2 = tv;             intent i3 = new intent(recipesactivity.this, addeditrecipesactivity.class);             i3.addflags(editingrecipe);             i3.putextra(recipeid, v.getid());             //i3.putextra(editrecipe, tv2.gettext().tostring());             //startactivityforresult(i3, editingrecipe);             startactivity(i3);         }     });     edit.setbackgroundresource(r.drawable.edit);     ll2.addview(edit);     imagebutton go = new imagebutton(this);     go.setid(cursor.getint(cursor.getcolumnindex("_id")));     go.setclickable(true);     go.setbackgroundresource(r.drawable.go);     go.setonclicklistener(new onclicklistener() {         @override         public void onclick(view v) {             intent i3 = new intent(recipesactivity.this, medicineactivity.class);             i3.putextra(showrecipe, v.getid());             recipesactivity.this.startactivity(i3);         }     });     ll2.addview(go);     ll.addview(ll2); }  }     }

thanks.

check cursor object not null , go inside...

if(cursor !=null){ while (cursor.movetonext()) { . . . } }

Comments

Post a Comment

Popular posts from this blog

java - JavaFX 2 slider labelFormatter not being used -

-
i have following code not label slider "foo50", etc... 1 expect setlabelformatter call, instead seems have no effect (the slider labelled 50, 100, etc , println's dont run). there missing? not implemented in default 2.2 skin? using oracle java 7 package javafxbugtest; import javafx.application.application; import javafx.scene.*; import javafx.scene.control.*; import javafx.stage.*; import javafx.util.stringconverter; public class javafxbugtest extends application { @override public void start(final stage primarystage) { slider cp = new slider(); cp.setlabelformatter(new stringconverter<double>() { @override public string tostring(double t) { system.out.println("nope?"); return "foo" + t.tostring(); } @override public double fromstring(string string) { system.out.println("he
Read more

Detect support for Shoutcast ICY MP3 without navigator.userAgent in Firefox? -

-
the current version of mozilla firefox 23.0.1, version not support play mp3 shoutcast streams tcp port different 80 (most common 8000 shoutcast 1.9.8). i use flash when mp3 support not available in html5 audio, way detect is: try{ var = document.createelement('audio'); r = !!(a.canplaytype && !!a.canplaytype("audio/mpeg; codecs=mp3").replace(/^no$/,'')) }catch(e){ r = false; } the support mp3 shoutcast streams in firefox added in version 24 . a.canplaytype("audio/mpeg; codecs=mp3") = in chrome , firefox, chrome support, firefox not support, due current code detect not work firefox. the current version of jquery support ie 6 1.10.2, version not has .browser i think "stylized" way testing features , not querying browsers / versions, notwithstanding here see hard not violate "principle". what "stylized" way of detect mp3 icy support without navigator.useragent in firefox? ther
Read more

web - SVG not rendering properly in Firefox -

-
i have problem svg renderring in firefox. whilst works in safari, chrome or in ie, doesn't work in firefox. inspecting element seems layers there, background visible if it's z-index higher z-index of others. rendered in firefox: svg logo in firefox link original source file: svg file thanks help. ps: used sketch 3 export svg. if helps somehow. you're experiencing bug 995813 . i fixed bug time ago change still making way through release process example display correctly firefox 31 onwards released on 22 july 2014. in meantime if move fill="white" <mask> element child <use> element work around firefox bug.
Read more