Android：CursorAdapter、ContentResolver、startManagingCursor

public class MainActivity extends ListActivity{    @Override    protected void onCreate(Bundle savedInstanceState)    {        super.onCreate(savedInstanceState);        //setContentView(R.layout.activity_main);                  ContentResolver cr = getContentResolver();//得到contentprovider对象        final Cursor c = cr.query(Phones.CONTENT_URI, null, null, null, null);//得到表的游标对象        startManagingCursor(c);                  setListAdapter(new CursorAdapter(this,c)        {            @Override//找到行布局            public View newView(Context context, Cursor cursor, ViewGroup viewGroup)            {                LayoutInflater inflater = getLayoutInflater();                View layout = inflater.inflate(android.R.layout.simple_list_item_2, null);                return layout;            }                          @Override//获取和设置行布局控件            public void bindView(View view, Context context, Cursor cursor)            {                TextView tvName = (TextView) view.findViewById(android.R.id.text1);                TextView tvPhone = (TextView) view.findViewById(android.R.id.text2);                                  String name = c.getString(c.getColumnIndex("name"));                String phone = c.getString(c.getColumnIndex("number"));                                  tvName.setText(name);                tvPhone.setText(phone);            }        });             }          @Override    public boolean onCreateOptionsMenu(Menu menu)    {        getMenuInflater().inflate(R.menu.activity_main, menu);        return true;    }      }

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