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POWhy do I get an illegalargumentexception here?
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2013-03-08T03:17:54.363
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<p>I'm new in android and I'm having a difficult time in this. all i want to do is to display data from database to List view. The error is always unhandled exception:illegelargumentexception.</p> <p>My xml is :</p> <pre><code><?xml version="1.0" encoding="utf-8"?> <AbsoluteLayout android:id="@+id/widget0" android:layout_width="fill_parent" android:layout_height="fill_parent" xmlns:android="http://schemas.android.com/apk/res/android"> <Button android:id="@+id/button1" android:layout_width="117dp" android:layout_height="29dp" android:text="SAVE" android:textSize="8sp" android:layout_x="17dp" android:layout_y="186dp" /> <TextView android:id="@+id/fname" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="First Name" android:textSize="10sp" android:layout_x="134dp" android:layout_y="24dp" /> <TextView android:id="@+id/lname" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Last Name" android:textSize="10sp" android:layout_x="132dp" android:layout_y="75dp" /> <EditText android:id="@+id/t1" android:layout_width="287dp" android:layout_height="32dp" android:text="EditText" android:textSize="12sp" android:layout_x="15dp" android:layout_y="43dp" /> <EditText android:id="@+id/t2" android:layout_width="287dp" android:layout_height="34dp" android:textSize="12sp" android:layout_x="14dp" android:layout_y="96dp" /> <TextView android:id="@+id/mname" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Middle Name" android:textSize="10sp" android:layout_x="126dp" android:layout_y="130dp" /> <EditText android:id="@+id/t3" android:layout_width="287dp" android:layout_height="31dp" android:textSize="12sp" android:layout_x="13dp" android:layout_y="149dp" /> <TextView android:id="@+id/text" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="TextView" android:textSize="10sp" android:layout_x="139dp" android:layout_y="191dp" /> <ListView android:id="@+id/lst" android:layout_width="320dp" android:layout_height="172dp" android:background="#ffccccff" android:layout_x="0dp" android:layout_y="258dp" /> <TextView android:id="@+id/ID" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="TextView" android:layout_x="26dp" android:layout_y="224dp" /> <TextView android:id="@+id/fnameshow" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="TextView" android:layout_x="94dp" android:layout_y="225dp" /> <TextView android:id="@+id/lnameshow" android:layout_width="wrap_content" android:layout_height="21dp" android:text="TextView" android:layout_x="164dp" android:layout_y="225dp" /> <TextView android:id="@+id/mnameshow" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="TextView" android:layout_x="230dp" android:layout_y="227dp" /> <Button android:id="@+id/btnFind" android:layout_width="117dp" android:layout_height="29dp" android:text="Find" android:textSize="10sp" android:layout_x="193dp" android:layout_y="186dp" /> </AbsoluteLayout> Code: void find_Click(object sender, EventArgs e) { string sColumnName = ""; if (text1.Text.Trim () != "") { sColumnName = "fname"; GetCursorView (sColumnName, text1.Text.Trim ()); } else if (text2.Text.Trim () != "") { sColumnName = "lname"; GetCursorView (sColumnName, text2.Text.Trim ()); } else if (text3.Text.Trim () != "") { sColumnName = "mname"; GetCursorView (sColumnName, text3.Text.Trim ()); } text.Text = "Search " + sColumnName + "."; ListView lvTemp = FindViewById<ListView>(Resource.Id.lst); lvTemp.ItemClick += new EventHandler<AdapterView.ItemClickEventArgs>(ListView_ItemClick); } protected void GetCursorView(string sColumn, string sValue) { Android.Database.ICursor icTemp = sql.GetRecordCursor(sColumn, sValue); if (icTemp != null) { icTemp.MoveToFirst(); ListView lvTemp = FindViewById<ListView>(Resource.Id.lst); string[] from = new string[] { "id", "fname", "lname", "mname" }; int[] to = new int[] { Resource.Id.ID, Resource.Id.fnameshow, Resource.Id.lnameshow, Resource.Id.mnameshow }; // creating a SimpleCursorAdapter to fill ListView object. SimpleCursorAdapter scaTemp = new SimpleCursorAdapter(this, Resource.Layout.Main, icTemp, from, to); //Error on this line lvTemp.Adapter = scaTemp; } else { text.Text = sql.Message; } } </code></pre>
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Why do I get an illegalargumentexception here?
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A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.