Crashing attempt to set ListView's adapter with SimpleCursorAdapter

activity_translate.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/activity_translate"
    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="ca.on.sl.comp208.comp208a3aidenscott.Translate">
    <ListView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginBottom="10dp"
        android:layout_alignParentBottom="true"
        android:layout_alignParentStart="true"
        android:layout_below="@+id/languages"
        android:id="@+id/lv">
    </ListView>
</RelativeLayout>

list_item_layout.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/list_item_layout"
    android:layout_width="fill_parent"
    android:layout_height="?android:attr/listPreferredItemHeight"
    android:padding="6dip" >
    <TextView
        android:id="@+id/txt1"
        android:layout_width="fill_parent"
        android:layout_height="26dip"
        android:layout_alignParentBottom="true"
        android:layout_alignParentRight="true"
        android:ellipsize="marquee"
        android:text="Description"
        android:textSize="12sp" />
    <TextView
        android:id="@+id/txt2"
        android:layout_width="fill_parent"
        android:layout_height="26dip"
        android:layout_alignParentBottom="true"
        android:layout_alignParentRight="true"
        android:ellipsize="marquee"
        android:text="Description"
        android:textSize="12sp" />
</RelativeLayout>

stacktrace

W/dalvikvm: threadid=1: thread exiting with uncaught exception (group=0x94c8eb20)
D/dalvikvm: GC_FOR_ALLOC freed 446K, 11% free 4389K/4892K, paused 2ms, total 3ms
D/dalvikvm: GC_FOR_ALLOC freed 512K, 12% free 4389K/4960K, paused 3ms, total 3ms
D/dalvikvm: GC_FOR_ALLOC freed 505K, 12% free 4391K/4960K, paused 2ms, total 3ms
D/dalvikvm: GC_FOR_ALLOC freed 516K, 12% free 4387K/4960K, paused 3ms, total 3ms
D/dalvikvm: GC_FOR_ALLOC freed 508K, 12% free 4389K/4960K, paused 2ms, total 2ms
D/dalvikvm: GC_FOR_ALLOC freed 507K, 12% free 4391K/4960K, paused 2ms, total 2ms
D/dalvikvm: GC_FOR_ALLOC freed 515K, 12% free 4386K/4960K, paused 2ms, total 2ms
D/dalvikvm: GC_FOR_ALLOC freed 508K, 12% free 4389K/4960K, paused 2ms, total 2ms
D/dalvikvm: GC_FOR_ALLOC freed 508K, 12% free 4391K/4960K, paused 2ms, total 3ms
D/dalvikvm: GC_FOR_ALLOC freed 498K, 12% free 4391K/4960K, paused 3ms, total 3ms
D/dalvikvm: GC_FOR_ALLOC freed 515K, 12% free 4387K/4960K, paused 2ms, total 2ms
D/dalvikvm: GC_FOR_ALLOC freed 509K, 12% free 4389K/4960K, paused 3ms, total 3ms
D/dalvikvm: GC_FOR_ALLOC freed 506K, 12% free 4391K/4960K, paused 3ms, total 3ms
I/dalvikvm: threadid=1: stack overflow on call to Ljava/util/Arrays;.checkOffsetAndCount:VIII
I/dalvikvm:   method requires 16+20+16=52 bytes, fp is 0x88dcd314 (20 left)
I/dalvikvm:   expanding stack end (0x88dcd300 to 0x88dcd000)
I/dalvikvm: Shrank stack (to 0x88dcd300, curFrame is 0x88dcd358)
D/dalvikvm: GC_FOR_ALLOC freed 532K, 12% free 4370K/4960K, paused 3ms, total 3ms

Translate.java

public class Translate extends AppCompatActivity {

SimpleCursorAdapter sca;
ListView lv;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_translate);

    //lets me see a little more of what's going on
    final Thread.UncaughtExceptionHandler subclass = Thread.currentThread().getUncaughtExceptionHandler();
    Thread.setDefaultUncaughtExceptionHandler(new Thread.UncaughtExceptionHandler() {
        @Override
        public void uncaughtException(Thread paramThread, Throwable paramThrowable) {
            Log.getStackTraceString(paramThrowable);

            subclass.uncaughtException(paramThread, paramThrowable);
        }
    });


    lv = (ListView) findViewById(R.id.lv);

    String[] from = {"_id","str"};
    int[] to = {R.id.txt1, R.id.txt2};
    String[] str = {"_id","str"};
    MatrixCursor mc = new MatrixCursor(str);
    MatrixCursor.RowBuilder rb;
    rb = mc.newRow();
    rb.add("1");  
    rb.add("thisisastring");
    
    this.sca = new SimpleCursorAdapter(this, R.id.list_item_layout, mc, from, to, 0);
    lv.setAdapter(this.sca); //crashes upon executing this line

    }
}