Develop Reference

customize listview can't show all data, android studio

I'm thinking how to show data at the customize listview page. can you guys help me to find out where is the mistakes?
here is the assignment
Model txn;
public SQLiteHelper mSQLiteHelper;
ListView mListView;
ArrayList<Model> mList;
RecordListAdapter mAdapter = null;
this is the initialization
mListView = findViewById(R.id.listView);
mList = new ArrayList<>();
mAdapter = new RecordListAdapter(this, R.layout.row, mList);
mListView.setAdapter(mAdapter);
mSQLiteHelper = new SQLiteHelper(this);
mList = new ArrayList<>();
This is my page which showing all data, I put a debugger to debug. It can get my all data which have 15 columns, But it can't show at the listview page. is there any mistake at this code?
try {
SQLiteDatabase db = mSQLiteHelper.getReadableDatabase();
Cursor cursor = db.rawQuery("select * from Table1", null);
mList.clear();
while (cursor.moveToNext()) {
txn = new Model();
txn.setId(cursor.getInt(cursor.getColumnIndex("id")));
txn.setName(cursor.getString(cursor.getColumnIndex("name")));
txn.setAddress(cursor.getString(cursor.getColumnIndex("address")));
txn.setPhone(cursor.getString(cursor.getColumnIndex("phone")));
mList.add(new Model());
}
mAdapter.notifyDataSetChanged();
if (mList.size() == 0) {
Toast.makeText(this, "No record found...", Toast.LENGTH_SHORT).show();
}
mListView.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {
#Override
public boolean onItemLongClick(AdapterView<?> parent, View view, int i, long l) {
return false;
}
});
} catch (Exception e) {
e.printStackTrace();
}

Please check below code
mListView = findViewById(R.id.listView);
mSQLiteHelper = new SQLiteHelper(this);
mList = new ArrayList<>();
mAdapter = new RecordListAdapter(this, R.layout.row, mList);
mListView.setAdapter(mAdapter);
Data binding function code
try {
SQLiteDatabase db = mSQLiteHelper.getReadableDatabase();
Cursor cursor = db.rawQuery("select * from Table1", null);
mList.clear();
while (cursor.moveToNext()) {
txn = new Model();
txn.setId(cursor.getInt(cursor.getColumnIndex("id")));
txn.setName(cursor.getString(cursor.getColumnIndex("name")));
txn.setAddress(cursor.getString(cursor.getColumnIndex("address")));
txn.setPhone(cursor.getString(cursor.getColumnIndex("phone")));
mList.add(txn);
}
mAdapter.notifyDataSetChanged();
if (mList.size() == 0) {
Toast.makeText(this, "No record found...", Toast.LENGTH_SHORT).show();
}
mListView.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {
#Override
public boolean onItemLongClick(AdapterView<?> parent, View view, int i, long l) {
return false;
}
});
} catch (Exception e) {
e.printStackTrace();
}
and I have one more suggestion, do not add listview click listener inside of your data binding function.

Display data to TextView from sql server database android studio

i want to affect data to my textview from my database in sql server but i don't arrive to do it and this is my code
SpinCom.setOnItemSelectedListener(new OnItemSelectedListener() {
#Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
try {
List<Model> list = new ArrayList<Model>();
String descript = "";
String query = "select * from centre where commune = '" + SpinCom + "'";
PreparedStatement stmt;
ResultSet rs;
Connection con = connectionClass.CONN();
stmt = con.prepareStatement(query);
rs = stmt.executeQuery();
// ResultSetMetaData rsmd = rs.getMetaData();
ArrayList<String> data = new ArrayList<String>();
// ListView adapter = new ListView(this, list);
// listView.setAdapter(adapter);
while (rs.next()) {
String id2 = rs.getString("commune");
data.add(id2);
Model obj = new Model();
obj.Ncentre(rs.getInt(1));
obj.Ndescript(rs.getString(2));
obj.Nrespons(rs.getString(3));
list.add(obj);
Showdescription.setText(list.get(position).Ncentre());
Showresponsable.setText(list.get(position).Ndescript());
Showquartier.setText(list.get(position).Nrespons());
}
} catch (SQLException e) {
e.printStackTrace();
}
}
#Override
public void onNothingSelected(AdapterView<?> parent) {
}
});
please i want your help

it is advisible to fetch data from any remote server using web service or else you cant fetch data from server

How to set spinner selection from an arrayadapter with an arraylist

Well I have an arraylist from my sqlite data. And I'm setting this arraylist on my arrayadapter of my spinner.
Here's how I do it:
public ArrayList<AttendantModelNames> getAllAttendantNames() {
ArrayList<AttendantModelNames> attendantModelArrayList = new ArrayList<>();
hp = new HashMap();
SQLiteDatabase db = this.getReadableDatabase();
Cursor res = db.rawQuery("SELECT * FROM " + TABLE_ATTENDANTS, null);
res.moveToFirst();
while (!res.isAfterLast()) {
AttendantModelNames l_att = new AttendantModelNames();
l_att.setname(res.getString(res
.getColumnIndex(KEY_NAME)));
attendantModelArrayList.add(l_att);
res.moveToNext();
}
Log.d(TAG, attendantModelArrayList.toString());
res.close();
return attendantModelArrayList;
}
Then my AttendantModelNames POJO:
public class AttendantModelNames {
String name;
public String getname() {
return name;
}
public void setname(String name) {
this.name = name;
}
#Override
public String toString() {
return name;
}
}
Then on my spinner:
private void setSpinner() {
spinner = (Spinner) findViewById(com.duka.R.id.spinner_toolbar);
ArrayList<AttendantModelNames> modelArrayList = ah.getAllAttendantNames();
ArrayAdapter<AttendantModelNames> dataAdapter =
new ArrayAdapter<AttendantModelNames>(this, android.R.layout.simple_spinner_item, modelArrayList);
dataAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner.setAdapter(dataAdapter);
int selectionPosition= dataAdapter.getPosition(modelArrayList.get(position).getname());
spinner.setSelection(selectionPosition);
I tried setting this but doesn't seem to work, says:
get(int) in arraylist cannot be applied to (java.lang.String) on
position
Any suggestions will be appreciated.

This is how i resolved my issue:
I started out by returning an list of type string:
public List<String> getAllAttendantNames() {
List<String> list = new ArrayList<String>();
// Select All Query
String selectQuery = "SELECT * FROM " + TABLE_ATTENDANTS;
SQLiteDatabase db = this.getReadableDatabase();
Cursor cursor = db.rawQuery(selectQuery, null);//selectQuery,selectedArguments
// looping through all rows and adding to list
if (cursor.moveToFirst()) {
do {
list.add(cursor.getString(2));//adding 2nd column data
} while (cursor.moveToNext());
}
// closing connection
cursor.close();
// returning lables
return list;
}
Then set up spinner:
private void loadSpinnerData() {
List<String> labels = ah.getAllAttendantNames();
// Creating adapter for spinner
ArrayAdapter<String> dataAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, labels);
// Drop down layout style - list view with radio button
dataAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
// attaching data adapter to spinner
spinner.setAdapter(dataAdapter);
int spinnerPosition = dataAdapter.getPosition(s_attname);
Log.d("spinner_set_selection", s_attname + spinnerPosition);
spinner.setSelection(spinnerPosition);
}
And ofcourse onCreate():
spinner = (Spinner) findViewById(R.id.spinner);
// Loading spinner data from database
loadSpinnerData();

List view with rawquery Could not execute method

I have a little issue that I don't know how to address.
I have a Cursor that gets data from my data base it looks like this:
public Cursor getAllData(){
int id;
SQLiteDatabase DB = this.getWritableDatabase();
String dateTime = Helper.getCurrentDate();
String date = dateTime.substring(0, 10);
String date_to_look = date.substring(0, 10);
String sql = "SELECT h.product_id, h.qty, h.date_time, p.product " +
" FROM product_history h " +
" LEFT JOIN products p ON (p.rowid = h.product_id) ";
Cursor res = DB.rawQuery(sql, null);
return res;
}
Then on my activity I'm using the following method:
public void populateListView() {
Cursor cursordata = myDb.getAllData();
String productname = cursordata.getString(cursordata.getColumnIndex("product"));
String [] products = {productname};
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, products);
ListView listviewman = (ListView)findViewById(R.id.listviewman);
listviewman.setAdapter(adapter);
}
Execute it with onclick:
public void shine(View v){
Button shine = (Button)findViewById(R.id.shine);
populateListView();
}
What am I doing wrong?
Edit:
Shows last row from the table only.
public void populateListView() {
Cursor cursordata = myDb.getAllData();
if (cursordata.moveToFirst()) {
do {
String productname = cursordata.getString((cursordata.getColumnIndex("product")));
String [] products = {productname};
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, products);
ListView listviewman = (ListView)findViewById(R.id.listviewman);
listviewman.setAdapter(adapter);
} while (cursordata.moveToNext());
}
Sahil here is the updated version of your suggestion which i use, it's not working:
public void populateListView() {
Cursor cursordata = myDb.getAllData();
List<String> li_records=new ArrayList<String>;
if (cursordata.moveToFirst()) {
do {
String productname = cursordata.getString((cursordata.getColumnIndex("product")));
String[] products = {productname};
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, products);
ListView listviewman = (ListView) findViewById(R.id.listviewman);
listviewman.setAdapter(adapter);
li_records.add(productname);
} while (cursordata.moveToNext());
}
String[] products=li_records.toArray();
}

try this it will work fine:
public void populateListView() {
Cursor cursordata = myDb.getAllData();
ArrayList<String> products = new ArrayList<>();
if (cursordata.moveToFirst()) {
do {
String productname = cursordata.getString((cursordata.getColumnIndex("product")));
products.add(productname);
} while (cursordata.moveToNext());
}
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, products);
ListView listviewman = (ListView)findViewById(R.id.listviewman);
listviewman.setAdapter(adapter);
}

Try to put
cursordata.moveToFirst()
after
List<String> li_records=new ArrayList<String>;
Cursor cursordata = myDb.getAllData();
use do while loop like this,
// looping through all rows and adding to list
if (cursordata.moveToFirst()) {
do {
String productname = c.getString((c.getColumnIndex("product")));
li_records.add(productname);
} while (cursordata.moveToNext());
}
String[] products=li_records.toArray();
use this array in your adapter

Android list view with additional extra hidden fields

I am using listview in android. Previously i used to pull data from database so I used CursorAdapter but now I am fetching response from website and on the website I have different links and each link has its name associated with it. I have names and links in two arrays of string. I have to show only the names and when clicked each name will open a same new intent with link as parameter.
Here is what I am doing
listView = (ListView) findViewById(R.id.list);
String[] names= new String[] { "name1",
"name2"
};
String[] links= new String[] { "link1",
"link2"
};
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
android.R.layout.simple_list_item_1, android.R.id.text1, send names and links);
listView.setAdapter(adapter);
listView.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
String itemValue = (String) listView.getItemAtPosition(position);
Intent myIntent = new Intent(arg0.getContext(), NewPage.class);
myIntent.putExtra("Url",how to get this);
startActivity(myIntent);
}
});
}

Wrap the two pieces of information in a custom object:
class Data {
String name;
String link;
#Override
public String toString() {
return name;
}
}
Building the list of data items:
String[] names= new String[] { "name1",
"name2"
};
String[] links= new String[] { "link1",
"link2"
};
List<Data> output = new ArrayList<Data>();
for (int i = 0; i < names.length; i++) {
Data d = new Data();
d.name = names[i];
d.link = links[i]
output.add(d);
}
ArrayAdapter<Data> adapter = new ArrayAdapter<Data>(this,
android.R.layout.simple_list_item_1, android.R.id.text1, output);
You can then use the Data in the OnItemClickListener:
Data item = (Data) listView.getItemAtPosition(position);
Intent myIntent = new Intent(arg0.getContext(), NewPage.class);
myIntent.putExtra("Url", d.link);
startActivity(myIntent);