I need to create a drop down list (spinner) in eclipse for Android whereby the drop down options can be created by the user.
To do this I've created a SQLiteDatabase, which I want to convert into a string array to be put into an array adapter, which can then be fed into the spinner.
Database details are:
DATABASE_NAME = "carddb"
DATABASE_TABLE = "cardtable"
Then the column I wish to read the values from is:
KEY_CARDDETAILS = "_carddetails";
Here is my code so far, adapted from another question on this site (Link: how to get the database value to a String array in android(sqlite Database))
myDB = cardtable.this.openOrCreateDatabase("carddb", MODE_PRIVATE, null);
Cursor cardcursor = cardDB.rawQuery("SELECT * FROM cardtable");
String[] cardstringarray = new String[cardcursor.getCount()];
cardcursor.moveToFirst();
int counter = 0;
while(cardcursor.moveToNext()){
String carddetailss = cardcursor.getString(cardcursor.getColumnIndex("NAME"));
cardstringarray[counter] = carddetailss;
counter++;
}
I'm getting an error under "myDB" and "cardtable", both errors saying they cannot be resolved into a variable!
PLEASE HELP!
Use this code
String[] displayName={};
ArrayList<String> List=new ArrayList<String>();
myDB = cardtable.this.openOrCreateDatabase("carddb", MODE_PRIVATE, null); Cursor cardcursor = cardDB.rawQuery("SELECT * FROM cardtable");
String[] cardstringarray = new String[cardcursor.getCount()];
cardcursor.moveToFirst();
int counter = 0;
while(cardcursor.moveToNext()){
String carddetailss = cardcursor.getString(cardcursor.getColumnIndex("NAME"));
List.add(carddetailss);
counter++;
}
if(List != null){
listEmail=(ListView)findViewById(R.id.listEmail);
listEmail.setVisibility(view.VISIBLE);
displayName=(String[])List.toArray(new String[0]);
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
android.R.layout.simple_list_item_1, android.R.id.text1, displayName);
// Assign adapter to ListView
listEmail.setAdapter(adapter);
}
This is work for you. Use spinner instead of listView.
Related
I'm getting all sharedpreferences created by my app and I insert them in a spinner but every sharedpreferences displayed like "example.xml" etc. I want to trim .xml extension let them just names like "example".
File prefsdir = new File(getApplicationInfo().dataDir,"shared_prefs");
if(prefsdir.exists() && prefsdir.isDirectory()){
String[] list = prefsdir.list();
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_expandable_list_item_1, android.R.id.text1,list);
Spinner sp = (Spinner) findViewById(R.id.tum_ilaclar);
sp.setAdapter(adapter);
}
You can use something like this create a new method:
String[] getList(String[] list){
String values[] = new String[list.length];
for(int i=0; i<list.length; i++){
String value = list[i];
values[i]=value.contains(".xml")?value.replace(".xml",""):value;
}
return values;
}
Then in your code change :
String[] list = prefsdir.list();
to
String[] list = getList(prefsdir.list());
This will remove the .xml part.
hay i used the SimpleCursorAdapter from implement the data on the spinner.its going well. also to get data i used following code:
Cursor cursor = (Cursor) (spncomapnayname.getSelectedItem());
if (cursor != null) {
companyselected = cc.getString(cc.getColumnIndex(db.COMPANY_NAME));
}
it is working well.but it is for the getting data from the spinner.but now i want to set particular data on spinner which was inserted by the user for update for normal ArrayAdapter spinner we used:
spinnername.setSelection(adapter1.getPosition(abc));
so i want to know how to set data from the database on spinner.
here is my code:
cursor = db.getProductName();
adapter1 = new SimpleCursorAdapter(this, android.R.layout.simple_spinner_item, cursor, new String[] { DB_Database.PRODUCT_NAME }, new int[] { android.R.id.text1 });
adapter1.setDropDownViewResource(android.R.layout.simple_dropdown_item_1line);
spnproduct.setAdapter(adapter1);
purchaseproduct = purchasebundle.getString("clickedpurchaseproductname");
if(!purchaseproduct.equals("null")|| !purchaseproduct.equals("")) {
System.out.println("purchaseproduct" + purchaseproduct);
String mypurchaseproduct=purchaseproduct;
ArrayAdapter myAdap = (ArrayAdapter) spnproduct.getAdapter();
int spinnerPosition = myAdap.getPosition(mypurchaseproduct); // set the default according to value
spnproduct.setSelection(spinnerPosition);
}
here i get data from bundle.i want to retrive data on Spinner.the data is populated from SimpleCursorAdapter
First Get Selected Value From Cursor and store into mString Variable and then use below code for display this selected value into Spinner.
if (!mString.equals("null") || !mString.equals("")) {
String myString = mString; // the value you want the position for
ArrayAdapter<String> myAdap = (ArrayAdapter<String>) mSpn1.getAdapter(); // cast to an ArrayAdapter
int spinnerPosition = myAdap.getPosition(myString);
// set the default according to value
mSpn1.setSelection(spinnerPosition);
}
You can do something like this:
Cursor c = (Cursor)parent.getItemAtPosition(pos);
int id = c.getInt(c.getColumnIndexOrThrow("columm_name"));
or to get a String
String name=c.getString(c.getColumnIndexOrThrow("columm_name"));
I want to create a ListPreference in my settings that is populated with the different "years" that are stored in my SQLite database. I've gotten it to add all the years, however it adds them more than once if there is more than one of them. I cannot figure out how to make each appear only once (ex. 2012,2011,2010. instead of 2012,2012,2012,2011,2010,2010). Heres my code:
ListPreference listPreferenceCategory = (ListPreference) findPreference("Filter");
entries = new ArrayList<String>();
values = new ArrayList<String>();
mySQLiteAdapter = new SQLiteAdapter(this);
mySQLiteAdapter.openToWrite();
cursor = mySQLiteAdapter.queueAll6();
cursor.moveToFirst();
for(int i = 0; i < cursor.getCount();i++)
{
String year = cursor.getString(cursor.getColumnIndex(SQLiteAdapter.YEAR));
if(Arrays.asList(entries).contains(year) == false){
entries.add(year);
values.add(year);
}
cursor.moveToNext();
}
final CharSequence[] charSequenceItems = entries.toArray(new CharSequence[entries.size()]);
final CharSequence[] charSequenceItems2 = values.toArray(new CharSequence[values.size()]);
listPreferenceCategory.setEntries(charSequenceItems);
listPreferenceCategory.setEntryValues(charSequenceItems2);
mySQLiteAdapter.close();
figured it out. I needed to use String[] array = entries.toArray(new String[entries.size()]); and then Arrays.asList(array).contains(year) == false
Cursor curz=mDbHelper.fetchAllRemindersG();
startManagingCursor(curz);
ArrayList<String> mArrayList = new ArrayList<String>();
String name =curz.getString(curz.getColumnIndex(DatabaseIN.KEY_TITLE));
for(curz.moveToFirst(); curz.moveToNext(); curz.isAfterLast())
{ mArrayList.add(name); }
name_Val = (String[]) mArrayList.toArray(new String[mArrayList.size()]);
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1,name_Val);
txtPhoneName.setAdapter(adapter);
I am filling a autocompletetextview and i get an error at String name =curz.getString(curz.getColumnIndex(DatabaseIN.KEY_TITLE));
it just can't get the correct column index it forcecloses ive tried to wirte mdbHelper.KEY_TITLE or just KEY_TITLE but it was the same error
curz.moveToFirst()
String name =curz.getString(curz.getColumnIndex(DatabaseIN.KEY_TITLE));
do {
mArrayList.add(name);
}while(curz.moveToNext());
First you need to move to first row, then you can get something from it. Because when cursor is created, the pointer points to the -1 index or you can say it points to beforeFirst.
Cursor curz=mDbHelper.fetchAllRemindersG();
startManagingCursor(curz);
// setTheme(android.R.style.Theme_Light);
curz.moveToFirst();
ArrayList<String> mArrayList = new ArrayList<String>();
if (curz.getCount() > 0)
{
do
{
String name = curz.getString(curz.getColumnIndex(DatabaseIN.KEY_TITLE));
if(name!=null)
{
mArrayList.add(name);
}
}while (curz.moveToNext());
}
I have a little problem with getting all data from SQLite database and showing them in ListView. The code I'm using is showing only the last item. Here is the code which I'm using :
ListView lv1 = (ListView) findViewById(R.id.saved_codes_listview);
SystemDatabaseHelper systemDbHelper = new SystemDatabaseHelper(this, null, 1);
systemDbHelper.initialize(this);
String sqlQuery = "SELECT code_id, code_string FROM saved_codes";
Cursor cursor = systemDbHelper.executeSQLQuery(sqlQuery);
if(cursor.getCount()==0){
Log.i("No Saved Codes","There is no Saved Codes.");
} else if(cursor.getCount()>0){
for(cursor.move(0); cursor.moveToNext(); cursor.isAfterLast()){
String codeString = cursor.getString(cursor.getColumnIndex("code_string"));
ArrayList<String> codes = new ArrayList<String>();
codes.add(codeString);
Log.i("Code String","Code String : "+codeString);
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, codes);
lv1.setAdapter(adapter);
}
}
I have 3 entries in my database as an example : shosho, bosho, gosho and as a result I have only gosho in my listview. Any idea how to fix that?
Thanks in advance!
Change your code so that you initialize array list before for loop, and also set ArrayAdapter AFTER the loop.
ArrayList<String> codes = new ArrayList<String>();
for(cursor.move(0); cursor.moveToNext(); cursor.isAfterLast()){
String codeString = cursor.getString(cursor.getColumnIndex("code_string"));
codes.add(codeString);
Log.i("Code String","Code String : "+codeString);
}
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, codes);
lv1.setAdapter(adapter);
Like this:
ArrayList<String> codes = new ArrayList<String>();
for(cursor.move(0); cursor.moveToNext(); cursor.isAfterLast()){
String codeString = cursor.getString(cursor.getColumnIndex("code_string"));
codes.add(codeString);
Log.i("Code String","Code String : "+codeString);
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, codes);
lv1.setAdapter(adapter);
}
You re-create a new ArrayList<String> codes in every loop so the last loop the list containing only one element, which is the last.
Change for(cursor.move(0); cursor.moveToNext(); cursor.isAfterLast())
to for(cursor.move(0);; cursor.isAfterLast(); cursor.moveToNext())
or use
while(cursor.isAfterLast())
cursor.moveToNext();