Question

Pigeon android noobie在这里。我正在尝试格式化DBcolumn上存储时间的数据库值。我正在使用的代码根本没有格式化数据，只显示格式化的数据如果我调试代码，正确的值将被传递到cosde的格式化piexe但它没有被传递到UI textview格式我必须亲近:)）

public void PopulateListViewFromDatabase() {


        Cursor cursor = myDb.getAllRows();

        startManagingCursor(cursor);
        // Setup mapping from the cursor to view fields


        String[] fromFieldNames = new String[] {
                DBAdapter.KEY_START,
                DBAdapter.KEY_FINISH, 
                DBAdapter.KEY_ACTIONHRCOUNT,
                DBAdapter.KEY_BANGCOUNT,
                DBAdapter.KEY_RANDOMOPT
                };


        int[] to=new int [] {
                R.id.txtStartTime, 
                R.id.txtFinishTime,
                R.id.txtActionCount,
                R.id.txtBangCount,
                R.id.checkRandom
                };

    //Create adaptor to map columns of the DB onto elements in the UI.
    SimpleCursorAdapter myCursorAdapter =
            new SimpleCursorAdapter(
                    this,                       // Context
                    R.layout.frm_item,  // Row layout template
                    cursor,                     //cursor record infomation
                    fromFieldNames,             //DB column names where the infomation is coming from
                    to                  // and where the infomation is being sent to
                    );




        myCursorAdapter.setViewBinder(new SimpleCursorAdapter.ViewBinder() {
            @Override
          public boolean setViewValue(View view, Cursor cursor, int columnIndex) {
            int nCheckedIndex = cursor.getColumnIndexOrThrow(DBAdapter.KEY_START);
            if (columnIndex == nCheckedIndex) {
                long DBStart = cursor.getLong(DBAdapter.COL_START);  //Value is being passed correctly into here!!!!
                TextView txtStart= (TextView) view;
                txtStart.setText(DateFormat.format("h:mm a",DBStart ));  // Not being sent as formatted data correctly here?????????????
            }
            return false;
          }
        });

    ListView myList = (ListView) findViewById(R.id.listviewactions);

    myList.setAdapter(myCursorAdapter);
    }

期待您的回复

Snowie

Answer 1

排序。这有很多帮助 Changing values from Cursor using SimpleCursorAdapter

最终代码

    public void PopulateListViewFromDatabase() {


        Cursor cursor = myDb.getAllRows();

        startManagingCursor(cursor);
        // Setup mapping from the cursor to view fields


        String[] fromFieldNames = new String[] {
                DBAdapter.KEY_START,
                DBAdapter.KEY_FINISH, 
                DBAdapter.KEY_ACTIONHRCOUNT,
                DBAdapter.KEY_BANGCOUNT,
                DBAdapter.KEY_RANDOMOPT
                };


        int[] to=new int [] {
                R.id.txtStartTime, 
                R.id.txtFinishTime,
                R.id.txtActionCount,
                R.id.txtBangCount,
                R.id.checkRandom
                };

    //Create adaptor to map columns of the DB onto elements in the UI.
    SimpleCursorAdapter myCursorAdapter =
            new SimpleCursorAdapter(
                    this,                       // Context
                    R.layout.frm_item,  // Row layout template
                    cursor,                     //cursor record infomation
                    fromFieldNames,             //DB column names where the infomation is coming from
                    to                  // and where the infomation is being sent to
                    );


        myCursorAdapter.setViewBinder(new ViewBinder() {
                public boolean setViewValue(View aView, Cursor aCursor, int aColumnIndex) {

                    if (aColumnIndex == 1) {
                        long createDate = aCursor.getLong(aColumnIndex);
                        TextView textView = (TextView) aView;
                        textView.setText(DateFormat.format("h:mm a", createDate));
                        return true;
                    }
                    if (aColumnIndex == 2) {
                        long createDate = aCursor.getLong(aColumnIndex);
                        TextView textView = (TextView) aView;
                        textView.setText(DateFormat.format("h:mm a", createDate));
                        return true;
                    }
         return false;
            }
        });
    ListView myList = (ListView) findViewById(R.id.listviewactions);
    myList.setAdapter(myCursorAdapter);

    }

在上面的链接中还有一个sqlLite语法注释，当数据适配器查询数据库时它会做同样的事情

格式化Sqlite数据库Listview中的时间textview

1 个答案: