我正在制作一个应用程序，当我试图在两个日期之间找到横切时，我会得到一个产品的横断面，我得到的结果只是两个日期之间的最后一个值
这是数据库代码
public DatabaseHandler(Context context)
{
super(context, DB_NAME, null, DB_VER);
}
@Override
public void onCreate(SQLiteDatabase db)
{
String CreateTableLiveRate = "CREATE TABLE liverate("
+"product_name TEXT NOT NULL,"
+"price TEXT)";
String CreateTablePeople = "CREATE TABLE people("
+"name TEXT NOT NULL,"
+"location TEXT)";
String CreateTableTransection = "CREATE TABLE transection("
+"date TEXT NOT NULL,"
+"name TEXT NOT NULL,"
+"credit TEXT NOT NULL,"
+"debit TEXT NOT NULL)";
String CreateTableTotalPayment = "CREATE TABLE total_payment("
+"name TEXT NOT NULL,"
+"total TEXT)";
String CreateTableEverydayTransection = "CREATE TABLE everyday_transection("
+"date TEXT NOT NULL,"
+"name TEXT NOT NULL,"
+"product_name TEXT NOT NULL,"
+"price TEXT NOT NULL,"
+"qty TEXT NOT NULL)";
db.execSQL(CreateTableLiveRate);
db.execSQL(CreateTablePeople);
db.execSQL(CreateTableTransection);
db.execSQL(CreateTableTotalPayment);
db.execSQL(CreateTableEverydayTransection);
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion)
{
}
//adding new product to liverate
public void addnewproduct(String Productname,String Price)
{
SQLiteDatabase db = getWritableDatabase();
ContentValues insValues = new ContentValues();
insValues.put("product_name", Productname);
insValues.put("price", Price);
db.insert("liverate", null, insValues);
}
//adding new vendors to people and totat_payment
public void addnewpeople(String Name,String Location)
{
SQLiteDatabase db = getWritableDatabase();
ContentValues insValues = new ContentValues();
insValues.put("name", Name);
insValues.put("location", Location);
db.insert("people", null, insValues);
ContentValues insValues1 = new ContentValues();
insValues1.put("name", Name);
db.insert("total_payment", null, insValues1);
}
// get total amount of the vendor
public Cursor gettotal(String name)
{
Cursor result;
SQLiteDatabase db = getReadableDatabase();
String tot = "SELECT total from total_payment "
+"WHERE name = '"+name+"'";
result = db.rawQuery(tot, null);
return result;
}
// get the current rate of the product from the liverate
public Cursor getrate(String productname)
{
Cursor result;
SQLiteDatabase db = getReadableDatabase();
String rate = "SELECT price from liverate "
+"WHERE product_name = '"+productname+"'";
result = db.rawQuery(rate, null);
return result;
}
// update total amount left for paying
public void updatetotal(String total, String name)
{
SQLiteDatabase db = getWritableDatabase();
String tot = "UPDATE total_payment "
+"SET total = '"+total+"' "
+"WHERE name = '"+name+"'";
db.execSQL(tot);
}
// add data to transection
public void addtransection(String Date, String Name, String Credit, String Debit)
{
SQLiteDatabase db = getWritableDatabase();
ContentValues insValues = new ContentValues();
insValues.put("date", Date);
insValues.put("name", Name);
insValues.put("credit", Credit);
insValues.put("debit", Debit);
db.insert("transection", null, insValues);
}
// add data to everyday_transection
public void addeverydaytransection(String Date, String Name, String Product_name, String Price, String Qty)
{
SQLiteDatabase db = getWritableDatabase();
ContentValues insValues = new ContentValues();
insValues.put("date",Date);
insValues.put("name",Name);
insValues.put("product_name",Product_name);
insValues.put("price",Price);
insValues.put("qty",Qty);
db.insert("everyday_transection", null, insValues);
}
//get the cash transection
public Cursor getcashtransection(String Name, String FromDate, String ToDate)
{
Cursor result;
SQLiteDatabase db = getReadableDatabase();
String cash = "SELECT * from transection "
+"WHERE date BETWEEN '"+FromDate+"' AND '"+ToDate+"' "
+"AND name = '"+Name+"'";
return result = db.rawQuery(cash, null);
}
//get product transection
public Cursor getproducttransection(String Name, String FromDate, String ToDate)
{
Cursor result;
SQLiteDatabase db = getReadableDatabase();
String product = "SELECT * from everyday_transection"
+"WHERE date BETWEEN '"+FromDate+"' AND '"+ToDate+"'"
+"AND name = '"+Name+"'";
return result = db.rawQuery(product, null);
}
// autocompletetextview for the people name
public String[] getName()
{
SQLiteDatabase db = getReadableDatabase();
Cursor cursor = db.query("people", new String[] {"name"}, null, null, null, null, null);
if(cursor.getCount() > 0)
{
String[] str = new String[cursor.getCount()+1];
str[0] = "";
int i=1;
while (cursor.moveToNext())
{
str[i] = cursor.getString(cursor.getColumnIndex("name"));
i++;
}
return str;
}
else
{
return new String[] {};
}
}
// autocompletetextview for the product name
public String[] getproduct()
{
SQLiteDatabase db = getReadableDatabase();
Cursor cursor = db.query("liverate", new String[] {"product_name"}, null, null, null, null, null);
if(cursor.getCount() > 0)
{
String[] str = new String[cursor.getCount()+1];
str[0] = "";
int i=1;
while (cursor.moveToNext())
{
str[i] = cursor.getString(cursor.getColumnIndex("product_name"));
i++;
}
return str;
}
else
{
return new String[] {};
}
}
// truncating the all the tables value
public void truncate()
{
SQLiteDatabase db = getWritableDatabase();
db.execSQL("DELETE from liverate");
db.execSQL("DELETE from people");
db.execSQL("DELETE from transection");
db.execSQL("DELETE from total_payment");
db.execSQL("DELETE from everyday_transection");
}
}
这是我试图获取数据并在SimpleAdapter中显示它的类
public class ProducTransection extends Activity
{
AutoCompleteTextView actv;
TextView datefrom, dateto;
Button getbtn;
ArrayAdapter<String> adapname;
Cursor cl;
HashMap<String, String> detail = new HashMap<String, String>();
ArrayList<HashMap<String, String>> detailList;
ListView lv1;
DatabaseHandler db = new DatabaseHandler(ProducTransection.this);
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.producttransection);
actv = (AutoCompleteTextView)findViewById(R.id.ptname);
datefrom = (TextView)findViewById(R.id.ptfromdate);
dateto = (TextView)findViewById(R.id.pttodate);
getbtn = (Button)findViewById(R.id.ptgetbtn);
lv1 = (ListView)findViewById(R.id.ptlist);
Calendar dat = Calendar.getInstance();
SimpleDateFormat sdf = new SimpleDateFormat("dd/MM/yyyy");
String formdate = sdf.format(dat.getTime());
datefrom.setText(formdate);
dateto.setText(formdate);
String[] name = db.getName();
adapname = new ArrayAdapter<String>(ProducTransection.this, android.R.layout.simple_list_item_1, name);
actv.setAdapter(adapname);
getbtn.setOnClickListener(new OnClickListener()
{
@Override
public void onClick(View v)
{
try
{
detailList = new ArrayList<HashMap<String, String>>();
cl = db.getproducttransection(actv.getText().toString(), datefrom.getText().toString(), dateto.getText().toString());
cl.moveToFirst();
//do
for(int i=0;i<=cl.getColumnCount();i++)
{
String date = cl.getString(cl.getColumnIndex("date"));
String product = cl.getString(cl.getColumnIndex("product_name"));
String price = cl.getString(cl.getColumnIndex("price"));
String Qty = cl.getString(cl.getColumnIndex("qty"));
detail.put("dat", date);
detail.put("pro", product);
detail.put("pri", price);
detail.put("qty", Qty);
detailList.add(detail);
SimpleAdapter simadap = new SimpleAdapter(ProducTransection.this,
detailList,
R.layout.producttransectionui,
new String[]{"dat","pro","pri","qty"},
new int[]{R.id.ptuidate,R.id.ptuiproduct,R.id.ptuiprice,R.id.ptuiqty});
lv1.setAdapter(simadap);
}
//while(cl.moveToNext());
}
catch (IndexOutOfBoundsException e)
{
}
}
});
}
}
现在我不知道哪里出错了请帮帮我
答案 0 :(得分：0)
您通过调用cl.moveToFirst()
尝试这样：
while (cl.moveToNext()) {
String date = cl.getString(cl.getColumnIndex("date"));
String product = cl.getString(cl.getColumnIndex("product_name"));
String price = cl.getString(cl.getColumnIndex("price"));
String Qty = cl.getString(cl.getColumnIndex("qty"));
//populate your ArrayList
}
SimpleAdapter simadap = new SimpleAdapter(ProducTransection.this,
detailList,
R.layout.producttransectionui,
new String[]{"dat","pro","pri","qty"},
new int[]{R.id.ptuidate,R.id.ptuiproduct,R.id.ptuiprice,R.id.ptuiqty});
lv1.setAdapter(simadap);
这是SimpleAdapter的简单tutorial。但在大多数情况下，您更愿意通过扩展BaseAdpapter来创建自己的适配器。