Begginner working with ListAdapters / SQLite Database
My programming knowledge is slim, i discovered Java and the Android SDK some days ago.
I have a SQLiteDatabase, a SQLiteOpenHelper, and a Cursor working properly ( means i think i understood how to create/open a DB using a SQLiteOpenHelper, make queries on my DB and get a cursor )
currently, i'm wrapping i + labName + labCity into a single results String, and display into a single TextView R.id.label
Is it possible to bind labName to R.id.label, and bind labCity to another TextView R.id.label2 ?
Here is the code of my ListActivity i need help with :
public class MainLabList extends ListActivity implements OnItemClickListener {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main_lab_list);
// DB
GestionDB gdb = new GestionDB(this, GestionDB.DATABASE_NAME, null, GestionDB.DATABASE_VERSION);
SQLiteDatabase theDB = gdb.getWritableDatabase();
// Cursor
String[] columns = {GestionDB.LAB_NAME, GestionDB.LAB_ADDRESS_CITY};
Cursor c =
theDB.query(GestionDB.TABLE_NAME, columns, null, null, null, null, null);
////////
this.setTitle(" " + c.getCount() + " Labs in Local Database");
ArrayList<String> results = new ArrayList<String>();
int i = 0;
c.moveToFirst();
/* Loop through all Results */
do {
i++;
String labName = c.getString(c.getColumnIndex(GestionDB.LAB_NAME));
String labCity = c.getString(c.getColumnIndex(GestionDB.LAB_ADDRESS_CITY));
/* Add current Entry to results. */
results.add("" + i + ": " + labName
+ " (" + labCity + ")");
} while (c.moveToNext());
//need rework
ListView lvLabListing = (ListView) findViewById(android.R.id.list);
ArrayAdapter<String> labListAdapter = new ArrayAdapter<String>(this,
R.layout.listing, R.id.label, results );
lvLabListing.setAdapter(labListAdapter);
lvLabListing.setOnItemClickListener(this);
//
// don't forget to close the database
gdb.close();
And the listing.xml i would like to modify :
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_height="wrap_content" android:layout_width="fill_parent">
<ImageView android:id="@+id/ImageView01" android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@drawable/icon"></ImageView>
<TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:id="@+id/label"></TextView>
</LinearLayout>
My GestionDB class is simple, just define some columns if the database doesn't exist, along with some variables.
Asked by: Steven952 | Posted: 25-01-2022
Answer 1
You should use a CursorAdapter, perhaps a SimpleCursorAdapter, for this. Here is an example.
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