Send data to fragment from activity - Null object reference -


i trying send variable activity fragment several days withouth success. have read identic questions, didn't me.

main class:

public void onclick(view v) {       switch (v.getid()) {           case r.id.btn1:               local = "1";               break;         case r.id.btn2:             local = "2";             break;         case r.id.btn3:             local = "3";             break;     }      final bundle bundle = new bundle();     bundle.putstring("local", local);     final resultados_mapa mapa = new resultados_mapa();     mapa.setarguments(bundle);      fragment resultados = new resultados_mapa();     fragmenttransaction ft = getfragmentmanager().begintransaction();     ft.setcustomanimations(r.animator.slide_in_left, r.animator.slide_out_right);      ft.replace(r.id.barra_id, resultados);     ft.commit(); }

fragment:

public view oncreateview(layoutinflater inflater, viewgroup container,                          bundle savedinstancestate) {     // inflate layout fragment         view layout_fragmento = inflater.inflate(r.layout.fragment_resultados__mapa, container, false);       arraylist<string> listitems=new arraylist<string>();      arrayadapter<string> adapter;      databaseoperations db =new databaseoperations(ctx);       try {          string local = getarguments().getstring("local");          toast.maketext(ctx, "local= "+local, toast.length_short).show();      } catch (exception e) {          log.e(tag_nome, "erro: "+e.getmessage());      }

i can't problem!

the error is: attempt invoke virtual method 'java.lang.string android.os.basebundle.getstring(java.lang.string)' on null object reference


Comments

Post a Comment

Popular posts from this blog

c# - Update a combobox from a presenter (MVP) -

i using mvp in project, new in mvp. have 2 comboboxes. when select option in combobox, combobox should filled new data. this action in presenter. view 'view1' in presenter, , introduced combobox1 , combobox2 properties in 'view1', because need 'datasource', 'displaymember', 'valuemember' , 'refresh()' in method below. but, when using pattern, enough send property like public string combobox2 { { return combobox1.selectedvalue.tosstring(); } } into presenter not whole combobox. how can solve problem? public void onselectedindexchangedcombobox1() { if (view1.combobox1.selectedindex == -1) { return; } datatable dt = tools.getdatatable("a path"); var query = (from o in dt.asenumerable() o.field<string>("afield") == farmerview.combobox1.selectedvalue.tostring() orderby o.field<string>("anotherfield") select...
Read more

How to understand 2 main() functions after using uftrace to profile the C++ program? -

i trying uftrace profile following simple c++ program: #include <iostream> class { public: a() {std::cout << "a created" << std::endl;} ~a() {std::cout << "a destroyed" << std::endl;} }; int main() { a; return 0; } the profile result this: # uftrace a.out created destroyed # duration tid function 2.026 [ 4828] | __cxa_atexit(); [ 4828] | main() { [ 4828] | __static_initialization_and_destruction_0() { 89.397 [ 4828] | std::ios_base::init::init(); 0.768 [ 4828] | __cxa_atexit(); 93.029 [ 4828] | } /* __static_initialization_and_destruction_0 */ 94.425 [ 4828] | } /* main */ [ 4828] | main() { [ 4828] | a::a() { 11.104 [ 4828] | std::operator <<(); 10.825 [ 4828] | std::basic_ostream::operator <<(); 24.514 [ 4828] | } /* a::a */ [ 4828] | a::~a() { 0.978 [ 4828] | ...
Read more

How to put a lock and transaction on table using spring 4 or above using jdbcTemplate and annotations like @Transactional? -

i trying put lock on table while writing on table , if happened in between roll-back . trying convert below code lock table test_g1 read; lock table test_g write; -- begin; start transaction; insert test_g1 values(143); insert test_g values(145); select * test_g1; select * test_g; rollback; select * test_g; unlock tables; how convert above code @transactional spring jdbctemplate code? @transactional(rollbackfor={dataaccessexception.class}) public void test(){ jdbctemplate.execute("insert test1 (id, nam) values (4, 'a')"); throw new dataaccessexception("error") { }; } here trying throw error, insert statement should rollback it's not happening . thanks edit-1 attaching code , doing in jdbcdaoimpl.java , mentioned problem comment above test() . app.java package com.cgiri.javabrains.spring4; import org.springframework.beans.factory.annotation.autowired; import org.springframework.context.applic...
Read more