I want to retrieve minimum balance from table using where condition on button click.Following is my code it's not working plz give me solution.Thanks in advance..
smname = spn_mname.getSelectedItem().toString().trim();
yname = spn_yname.getSelectedItem().toString().trim();
scno = spn_count.getSelectedItem().toString().trim();
String dbsyname = null, dbsmname = null, dbsycolor = null, dbscount = null, dbsrqty = null, dbsdqty = null, dbsbaln = null;
DataBaseHelper dbh = new DataBaseHelper(StockActivity.this);
SQLiteDatabase db = dbh.getReadableDatabase();
Cursor cursor = db.rawQuery("SELECT MIN(Balance) FROM stocktable",null);
if (cursor.moveToFirst()) {
do {
dbsmname = cursor.getString(cursor.getColumnIndex("Millname"));
dbsyname = cursor.getString(cursor.getColumnIndex("Yarnname"));
dbscount = cursor.getString(cursor.getColumnIndex("Counttno"));
if (dbsmname.equals(smname)
&& bsyname.equals(syname)
&& dbscount.equals(scno)) {
dbsbaln = cursor.getString(cursor.getColumnIndex("Balance"));
}
} while (cursor.moveToNext());
edtrqty.setText(dbsbaln);
}
you have only selected MIN(Balance) only in your query and trying to access Millname,Counttno and other value on cursor it will throw the exception.
Try Below Solution
Cursor cursor = db.rawQuery("SELECT MIN(Balance) balance as FROM stocktable
where Millname=? AND bsyname=? AND dbscount=?",new String[]{smname,syname,scno});
if (cursor.moveToFirst()) {
do {
dbsbaln = cursor.getString(cursor.getColumnIndex("balance"));
}
} while (cursor.moveToNext());
edtrqty.setText(dbsbaln);
Following code works perfectly...
Cursor cursor = db.rawQuery("SELECT MIN(Balance) AS balance FROM " + DataBaseHelper.stocktable + " WHERE Millname = ? AND Yarnname = ? AND Counttno = ? ", new String[] { smname, syname, scno });
if (cursor.moveToFirst()) {
do {
dbsbaln = cursor.getString(cursor
.getColumnIndex("balance"));
} while (cursor.moveToNext());
edtrqty.setText(dbsbaln);
}
Related
public String[] getAllDescription() {
db = this.getReadableDatabase();
cursor = db.query(NOTIFICATIONTABLE, new String[]{"notification_id", "notification_title",
"notification_description", "notification_isread", "date"}, null, null, null,
null, null);
String[] result = new String[cursor.getCount()];
int i = 0;
if (cursor.moveToFirst()) {
do {
result[i] = cursor.getString(cursor.getColumnIndex("notification_description"));
i++;
} while (cursor.moveToNext());
}
if ((cursor != null) && !cursor.isClosed()) {
cursor.close();
db.close();
}
return result;
}
this is my code currently i am getting from 0 to n data in staring array i want to get in reverse array data from n to 0 so that i can Print please suggest me how i will get data
Try this method :
public ArrayList<String> getAllDescription()
{
ArrayList<String> array_list = new ArrayListString>();
SQLiteDatabase db = this.getReadableDatabase();
Cursor res = db.rawQuery("SELECT * " + " FROM " + NOTIFICATIONTABLE+ " DESC;", null);
res.moveToFirst();
while (res.isAfterLast() == false)
{
array_list.add(hashmap);
res.moveToNext();
}
return array_list;
}
Or If you want to reverse arrayList then you can also do it By just a single line of code .
Collections.reverse("yourArrayList");
Hope it will help you.
i am getting from 0 to n data in staring array i want to get in
reverse array data from n to 0
Why not using ASC or DESC in db query to get result in sequence as want according to notification_description column.
do it as:
cursor = db.query(NOTIFICATIONTABLE,
new String[]{"notification_id",
"notification_title",
"notification_description",
"notification_isread",
"date"}, null, null, null,
null, "notification_description DESC");
You can insert the data from end of theString[]...
public String[] getAllDescription() {
db = this.getReadableDatabase();
cursor = db.query(NOTIFICATIONTABLE, new String[]{"notification_id", "notification_title",
"notification_description", "notification_isread", "date"}, null, null, null,
null, null);
String[] result = new String[cursor.getCount()];
int i = 0;
if (cursor.moveToFirst()) {
do {
///////////////////////
result[(cursor.getCount()-1)-i] = cursor.getString(cursor.getColumnIndex("notification_description"));
///////////////////////
i++;
} while (cursor.moveToNext());
}
if ((cursor != null) && !cursor.isClosed()) {
cursor.close();
db.close();
}
return result;
}
My app is taking forever to load,how can I use paging that's it would load me like 10-15 people in a page and not to take 2 minute to my app for loading??
this is my code:
thank's for the help
public class Contacts extends Util<Contact> {
public Contacts(Activity activity) {
super(activity);
}
#Override
public void init() {
list = getContactsBasic();
for (int i = 0; i < list.size(); i++) {
Contact current = list.get(i);
current.image = getContactImage(current.id);
if (current.hasPhone) {
current.phones = getContactPhones(current.id);
}
}
}
LinkedList<Contact> getContactsBasic() {
Uri contactsUri = android.provider.ContactsContract.Contacts.CONTENT_URI;
Cursor cursor = activity.getContentResolver().query(contactsUri, null, null, null, null);
LinkedList<Contact> list = new LinkedList<Contact>();
if (cursor != null) {
if (cursor.moveToFirst()) {
do {
int id = cursor.getInt(cursor.getColumnIndex(android.provider.ContactsContract.Contacts._ID));
String name = cursor.getString(cursor.getColumnIndex(android.provider.ContactsContract.Contacts.DISPLAY_NAME));
int hasPhone = cursor.getInt(cursor.getColumnIndex(android.provider.ContactsContract.Contacts.HAS_PHONE_NUMBER));
// add more columns here
boolean hasPhoneBoolean; //editor: or simply: boolean hasPhoneBoolean = (hasPhone == 1)
if (hasPhone == 1){
hasPhoneBoolean = true;
}
else {
hasPhoneBoolean = false;
}
Contact contact = new Contact(id, name, hasPhoneBoolean);
//Contact contact = new Contact(id, name, (hasPhone == 1) ? true : false);
list.add(contact);
}
while (cursor.moveToNext());
}
cursor.close();
}
return list;
}
LinkedList<Phone> getContactPhones(int id) {
Uri phonesUri = android.provider.ContactsContract.CommonDataKinds.Phone.CONTENT_URI;
String filter = android.provider.ContactsContract.CommonDataKinds.Phone.CONTACT_ID + " = " + String.valueOf(id);
Cursor cursor = activity.getContentResolver().query(phonesUri, null, filter, null, null);
LinkedList<Phone> list = new LinkedList<Phone>();
if (cursor != null) {
if (cursor.moveToFirst()) {
do {
String number = cursor.getString(cursor.getColumnIndex(android.provider.ContactsContract.CommonDataKinds.Phone.NUMBER));
int type = cursor.getInt(cursor.getColumnIndex(android.provider.ContactsContract.CommonDataKinds.Phone.TYPE));
Phone phone = new Phone(number, type);
list.add(phone);
}
while (cursor.moveToNext());
}
Change
Cursor cursor = activity.getContentResolver().query(contactsUri, null, null, null, null);
to
Cursor cursor = activity.getContentResolver().query(contactsUri, null, null, null, "ASC LIMIT " + HOW_MANY_ROWS_YOU_NEED);
The problem is i inserted only two rows but on execution it enters into infinite loop and repeatedily showing the same data..Any kind of help would be appreciated
Here is my code.
This is my databse class (i.e DbAdapter)
public Cursor getAllRows() {
String[]columns = new String[]{ KEY_MODEL,KEY_BRAND, KEY_PRICE};
Cursor c = db.query(TABLE_LAPTOPS, columns, null, null, null, null, null);
if (c != null) {
c.moveToLast();
}
return c;
}
This is my main class (i.e Laptops)
DbAdapter obj = new DbAdapter(this);
obj.open();
obj.insertRow("Dell1", "Dell", 345);
obj.insertRow("Hp1", "HP", 546);
obj.close();
obj.open();
Cursor c1 = obj.getAllRows();
try{
if(c1 != null){
ListView empListView = (ListView)findViewById(R.id.listView1);
ArrayList<String> data1 = new ArrayList<String>();
for(c1.moveToFirst();!c1.isAfterLast();c1.moveToNext())
{
Toast.makeText(getApplicationContext(), c1.getString(0), Toast.LENGTH_LONG).show();
}
//empListView.setAdapter(new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, data1));
}}catch(SQLException e){
e.printStackTrace();
}
obj.close();
c.moveToLast();
here is the issue
c.moveToFirst();
try this..
Try with Like This
listView = (ListView) rootView.findViewById(R.id.Assignment_VM_List);
AssignmentDatabaseConnector dao = new AssignmentDatabaseConnector(getActivity());
List<AssignmentPojo> assignments = dao.getAllAssignmentList();
AssignmentCustomAdapter assignmentCustomAdapter = new AssignmentCustomAdapter(getActivity(),
assignments, this);
listView.setAdapter(assignmentCustomAdapter);
AssignmentDatabaseConnector :
public List<AssignmentPojo> getAllAssignmentList() {
open();
List<AssignmentPojo> assignmentList = new ArrayList<AssignmentPojo>();
// Select All Query
String selectQuery = "SELECT * FROM Assignment";
Cursor cursor = database.rawQuery(selectQuery, null);
// looping through all rows and adding to list
if (cursor.moveToFirst()) { // ##Your Main Issue is Here ##
do {
AssignmentPojo assignment = new AssignmentPojo();
assignment.setAssign_Id(cursor.getString(0));
assignment.setAssign_Course(cursor.getString(1));
// Adding contact to list
assignmentList.add(assignment);
} while (cursor.moveToNext());
}
cursor.close();
database.close();
// return contact list
return assignmentList;
}
This is just a sample code you can utilize this code according to your requirements
Hello guys I want to display records. However, I don't want to display them in listview but in textview. I have in my to do the new line feed \n to do the trick, but in my program, it just shows the first record.
This is what I've tried so far:
MainActivity.class
Bundle extras = getIntent().getExtras();
if (extras != null) {
dog_name = extras.getString("dog_name");
cursor = dbHelper.fetchbBreedByName(dog_name);
strID = cursor.getString(0);
strDesc = cursor.getString(cursor.getColumnIndexOrThrow("description"));
strDiet = cursor.getString(cursor.getColumnIndexOrThrow("diet"));
strShelter = cursor.getString(cursor.getColumnIndexOrThrow("shelter"));
strHygiene = cursor.getString(cursor.getColumnIndexOrThrow("hygiene"));
strMedication = cursor.getString(cursor.getColumnIndexOrThrow("medication"));
strBreed = cursor.getString(cursor.getColumnIndexOrThrow("breed"));
Log.d("Animal ID", "Animal ID is " + strID + " and breed is " + strBreed);
Log.d("Desc", "Desc " + strDesc);
Description.setText(strDesc);
Diet.setText(strDiet);
Shelter.setText(strShelter);
Hygene.setText(strHygiene);
Medication.setText(strMedication); }
DBHelper.class
public Cursor fetchbBreedByName(CharSequence inputText) throws SQLException {
Cursor mCursor = null;
if (inputText == null || inputText.length () == 0) {
mCursor = myDataBase.query(DB_TABLE, new String[] { KEY_ID, KEY_DESCRIPTION,
KEY_DIET, KEY_SHELTER, KEY_HYGIENE, KEY_MEDICATION, KEY_BREED },
null, null, null, null, null);
}
else {
String qry = "SELECT _id, description, diet, shelter, hygiene, medication, " +
"breed FROM tblAnimalInfo WHERE breed LIKE '%" + inputText + "%';";
mCursor = myDataBase.rawQuery(qry, null);
//mCursor = myDataBase.query(DB_TABLE, new String[] { KEY_ID, KEY_DESCRIPTION,
// KEY_DIET, KEY_SHELTER, KEY_HYGIENE, KEY_MEDICATION, KEY_BREED },
// KEY_BREED + " like '%" + inputText + "%'", null, null, null, null);
}
if (mCursor != null) {
mCursor.moveToFirst();
}
return mCursor;
}
I don't know what's wrong. Please help me figure out what's missing in my code. Thanks in advance.
It seems that you are only loading the first row given by your Cursor. You have to use cursor.moveToNext(); to be able to get the rest of your data. Take a look to the example below:
// Getting All Contacts
public List<Contact> getAllContacts() {
List<Contact> contactList = new ArrayList<Contact>();
// Select All Query
String selectQuery = "SELECT * FROM " + TABLE_CONTACTS;
SQLiteDatabase db = this.getWritableDatabase();
Cursor cursor = db.rawQuery(selectQuery, null);
// looping through all rows and adding to list
if (cursor.moveToFirst()) {
do {
Contact contact = new Contact();
contact.setID(Integer.parseInt(cursor.getString(0)));
contact.setName(cursor.getString(1));
contact.setPhoneNumber(cursor.getString(2));
// Adding contact to list
contactList.add(contact);
} while (cursor.moveToNext());
}
// return contact list
return contactList;
}
You are missing cursor.moveToNext() function to move to the next record, as mentioned earlier. Besides I would like to mention a few other issues in the coding style. You should not call moveToFirst() in the query function itself, use it where you are actually traversing through the records. Also make sure you close the cursor appropriately. So your code should look like:
cursor = dbHelper.fetchbBreedByName(dog_name);
if (cursor != null) {
if (cursor.moveToFirst()) {
do {
....
< access the record >
...
} while (cursor.moveToNext());
}
cursor.close(); // very important
}
And remove these lines from fetchbBreedByName()
if (mCursor != null) {
mCursor.moveToFirst();
}
public Cursor getsomething()
{
this.open();
Cursor c = database.rawQuery("SELECT content_id FROM " +
DatabaseHandler.Table_Name2 +
" where playlist_id==100813", null);
if (c != null ) {
if (c.moveToFirst()) {
do {
String path = c.getString(c.getColumnIndex("content_id"));
MainActivity.t1.append("\n");
MainActivity.t1.append(path);
}while (c.moveToNext());
}
}
this.close();
return null;
}
I am using the above code to get the values but it is showing all the values from he content_id column. What am I doing wrong?
this.open();
ContentValues values2 = new ContentValues();
String csvFilename = "/mnt/sdcard/playlist.csv";
CSVReader csvReader = new CSVReader(new FileReader(csvFilename));
String Rowst[] = null;
while((Rowst = csvReader.readNext()) != null) {
st1 = Rowst[0];
st2= Rowst[1];
st3= Rowst[2];
st4= Rowst[3];
st5= Rowst[4];
st6 = Rowst[5];
st7 = Rowst[6];
st8 = Rowst[7];
st9 = Rowst[8];
st10 = Rowst[9];
st11 = Rowst[10];
st12 = Rowst[11];
st13 = Rowst[12];
st14 = Rowst[13];
st15 = Rowst[14];
st16 = Rowst[15];
st17 = Rowst[16];
st18 = Rowst[17];
st19 = Rowst[18];
values2.put(DatabaseHandler.play1,st1);
values2.put(DatabaseHandler.play2,st2);
values2.put(DatabaseHandler.play3,st3);
values2.put(DatabaseHandler.play4,st4);
values2.put(DatabaseHandler.play5,st5);
values2.put(DatabaseHandler.play6,st6);
values2.put(DatabaseHandler.play7,st7);
values2.put(DatabaseHandler.play8,st8);
values2.put(DatabaseHandler.play9,st9);
values2.put(DatabaseHandler.play10,st10);
values2.put(DatabaseHandler.play11,st11);
values2.put(DatabaseHandler.play12,st12);
values2.put(DatabaseHandler.play13,st13);
values2.put(DatabaseHandler.play14,st14);
values2.put(DatabaseHandler.play15,st15);
values2.put(DatabaseHandler.play16,st16);
values2.put(DatabaseHandler.play17,st17);
values2.put(DatabaseHandler.play18,st18);
values2.put(DatabaseHandler.play19,st19);
database.insert(DatabaseHandler.Table_Name2, null, values2);
}
csvReader.close();
this.close();
this is my code to insert data in the this table,i am trying to read a csvfile on the sdcard and entering its data into table am i doing something wrong i have posted this also if it helps
public Cursor getsomething()
{
this.open();
Cursor c = db.query(DatabaseHandler.Table_Name2, null, "playlist_id=100813", null, null, null, null);
if (c.getCount() > 0)
{
if (c.moveToFirst())
{
do {
String path = c.getString(c.getColumnIndex("content_id"));
MainActivity.t1.append("\n");
MainActivity.t1.append(path);
}while (c.moveToNext());
}
}
this.close();
return null;
}