带CursorAdapter到自定义ListView的SQLite

Question

如何填充自定义ListView与来自SQLite database的数据？
我应该使用哪种类型的适配器？

截图http://www.codelearn.org/android-tutorial/assets/list_view/Custom_Base_adapter-6c6a43148474a723639fcbb8c85f5786.png

Answer 1

如果你想从SQLite的做ListView与Data尝试使用CursorAdapter。

ListAdapter.java

public class ListAdapter extends CursorAdapter { 
public ListAdapter(Context context, Cursor cursor, int flags) { 
    super(context, cursor, 0); 
} 

// The newView method is used to inflate a new view and return it, 
// you don't bind any data to the view at this point. 
@Override 
public View newView(Context context, Cursor cursor, ViewGroup parent) { 
    final LayoutInflater inflater = LayoutInflater.from(context); 
    return LayoutInflater.from(context).inflate(R.layout.items, parent, false); 
} 
// The bindView method is used to bind all data to a given view 
@Override 
public void bindView(View view, Context context, final Cursor cursor) { 
    TextView txt1 = (TextView) view.findViewById(R.id.TitleLabel); 
    TextView txt2 = (TextView) view.findViewById(R.id.SecondLabel); 
    TextView txt3 = (TextView) view.findViewById(R.id.ThirdLabel); 
    // Extract properties from cursor 
    // getString(int) - number of column 
    String value1 = cursor.getString(1); 
    String value2 = cursor.getString(2); 
    String value3 = cursor.getString(3); 
    String value4 = cursor.getString(4); 


    txt1.setText(value1); 
    txt2.setText("value2: " + value2); 
    txt3.setText("value3: " + value3 + "value4: " + value4); 

    } 
} 

MainActivity.java

帮手 - 数据库辅助类

ListView listview = (ListView) findViewById(R.id.listView); 
SQLiteDatabase db = helper.getWritableDatabase(); 
    final Cursor ListCursor = db.rawQuery("SELECT * FROM tablename", null); 
    final ListAdapter todoAdapter = new ListAdapter(this, ListCursor, 0); 
    // Attach cursor adapter to the ListView 
    listview.setAdapter(todoAdapter); 

Answer 2

如果你想在列表视图中显示单个字段，然后用简单的Arrayadapter即

DBHelper mydb = new DBHelper(this); 
    ArrayList array_list = mydb.getAllCotacts(); 
    ArrayAdapter arrayAdapter=new ArrayAdapter(this,android.R.layout.simple_list_item_1, array_list); 

    ListView obj = (ListView)findViewById(R.id.listView1); 
    obj.setAdapter(arrayAdapter); 

其他智能实现自定义适配器通过BaseAdapter进行扩展。