Android ListView- Error on setListAdapter & getListAdapter? -
i have following code in mainavtivity:
private dboperations datadboperation; @override protected void oncreate(bundle savedinstancestate) { super.oncreate(savedinstancestate); setcontentview(r.layout.activity_main); datadboperation = new dboperations(this); datadboperation.open(); list values = datadboperation.getallusersims(); // use simplecursoradapter show // elements in listview arrayadapter adapter = new arrayadapter(this, android.r.layout.simple_list_item_1, values); setlistadapter(adapter); } public void addsim(view view) { arrayadapter adapter = (arrayadapter) getlistadapter(); edittext text = (edittext) findviewbyid(r.id.edittext1); simsclass stud = datadboperation.addsims(text.gettext().tostring()); adapter.add(stud); } public void deletesim(view view) { arrayadapter adapter = (arrayadapter) getlistadapter(); simsclass sim = null; if (getlistadapter().getcount() > 0) { sim = (simsclass) getlistadapter().getitem(0); datadboperation.deletesims(sim); adapter.remove(sim); } } public void addpassword(view view) { arrayadapter adapter = (arrayadapter) getlistadapter(); edittext text = (edittext) findviewbyid(r.id.edittext2); passwordclass stud = datadboperation.addpassword(text.gettext().tostring()); adapter.add(stud); } and here layoun xml file:
<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:id="@+id/textview1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignparentleft="true" android:layout_alignparenttop="true" android:layout_marginleft="113dp" android:text="textview" /> <edittext android:id="@+id/edittext1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignparentleft="true" android:layout_alignparenttop="true" android:ems="10" > <requestfocus /> </edittext> <button android:id="@+id/addbtn" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_below="@+id/edittext1" android:onclick="addsim" android:text="add new" /> <button android:id="@+id/deletebtn" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_torightof="@+id/addbtn" android:layout_below="@+id/edittext1" android:onclick="deletesim" android:text="delete first" /> <listview android:id="@android:id/list" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_alignparentleft="true" android:layout_below="@+id/deletebtn" > </listview> <edittext android:id="@+id/edittext2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignparentright="true" android:layout_below="@+id/addbtn" android:ems="10" /> <button android:id="@+id/passwordbtn" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_above="@android:id/list" android:layout_torightof="@+id/edittext1" android:onclick="addpassword" android:text="@string/password" /> </relativelayout> error:
method setlistadapter(adapter) undefined type mainactivity.
method getlistadapter(adapter) undefined type mainactivity.
you need extend listactivity instead of activity. setlistadapter method of listactivity. same getlistadapter
http://developer.android.com/reference/android/app/listactivity.html
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