Question

我一直在尝试在sqlite android中更新我的数据，但它不起作用。此外，logcat中也没有显示错误消息。

以下是我的代码：

Dbadapter.java：

public boolean updateEntry(SalesItemInformationLV testing)
    {
        ContentValues values = new ContentValues();
        try {

            values.put(ENTRY_NAME, testing.getItemname());
            values.put(ENTRY_TEL, testing.getCostprice());
            values.put(ENTRY_SELLINGPRICE, testing.getSellingprice());
            values.put(ENTRY_QTYSOLD, testing.getItemquantity());
            values.put(ENTRY_DATESOLD, testing.getDatesold());
            values.put(ENTRY_STAFFDISCOUNT, testing.getStaffdiscount());

        }
        catch (SQLiteException e)
        {
            Log.w(MYDBADAPTER_LOG_CAT, "Update failed!" + e.toString());
        }


        // updating row
        int returnvalue =  _db.update(DATABASE_TABLE, values, KEY_ID + " = ?", new String[] { String.valueOf(testing.getId()) });
        return returnvalue==1 ? true : false;
    }

MyItems.java：

 public  boolean updateDatabase(SalesItemInformationLV testing2, Context c)
{
    MyDbAdapter db = new MyDbAdapter(c);
    db.open();

    boolean rowIDofUpdatedEntry = db.updateEntry(testing2);
    db.close();
    return  rowIDofUpdatedEntry;
}

ListView.java，它将saleitem2对象意图传递给Edit.java：

    MyItems mi2;
 private ArrayList<SalesItemInformationLV> displayiteminfo2;
mi2 = MyItems.getInstance();
 displayiteminfo2 = mi2.retrieveAllForlist2(getApplicationContext());
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {

                SalesItemInformationLV saleitem2 = displayiteminfo2.get(position);
             String namevalue = saleitem2.getItemname();

            Intent myintent = new Intent(ListSaleItemActivity.this, EditSaleActivity.class);
            myintent.putExtra("array", saleitem2);             

            startActivity(myintent);

Edit.java将使用Items.java中的update方法：

 Bundle extras = this.getIntent().getExtras();
        final SalesItemInformationLV sale1 = (SalesItemInformationLV)extras.getSerializable("array");
        final int id1 = extras.getInt("itemID");

btnSaveChanges.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

mc.updateDatabase(sale1, getApplicationContext());

}}

我一直想弄清楚，我认为我的Dbadapter.java可能有问题，但我不确定。请告诉我如何解决这个问题！

SQLite Update在android中不起作用

0 个答案: