Android MatrixCursor

Question

我正在尝试运行基本矩阵光标，但由于某种原因，列表仍为空。如果有人能够发现代码可能出现的问题，我将不胜感激？

    String []columns = new String[] {"_id","Title","Desc"} ;
    MatrixCursor mc = new MatrixCursor(columns);
    startManagingCursor(mc);

    for(int i=0; i< 200;i++)
    {
        mc.addRow(new Object[]{i, "test"+i ,"..."});
    }

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

    int [] r = new int[1];
    r[0] = R.id.atext;           // the id of the textview in test_list_item layout
    String [] s= new String[1];  
    s[0] = mc.getColumnName(1);  // the column to be used "Title"
    SimpleCursorAdapter adapter = new SimpleCursorAdapter(this,android.R.layout.test_list_item,mc,s,r);

    lv.setAdapter(adapter);

Answer 1

未读取布局的原因是由于调用了错误的布局：
           SimpleCursorAdapter（此，android.R.layout.list_item，MC，S，R）; 代替：            SimpleCursorAdapter（此，R.layout.my_list_item，MC，S，R）;