Hello.
This is my main class, which helps to displays data out of a database
in list format. It also handles a "ADD"and a "Delete" Button:
/**
* A list view example where the
* data for the list comes from an array of strings.
*/
public class TeaTime extends ListActivity {
private static final int ACTIVITY_CREATE=0;
private static final int ACTIVITY_EDIT=1;
private TeaDB myDBHelper;
private Cursor myTeaCursor;
private static final int ADD_ID = Menu.FIRST;
private static final int DELETE_ID = Menu.FIRST + 1;
@Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
setContentView(R.layout.main);
myDBHelper = new TeaDB(this);
myDBHelper.open();
fillData();
myDBHelper.close();
}
private String[] mStrings = {
"Green Tea","Black Tea","Fruit Tea","Peppermint Tea"};
/**
* Get all Teas in an array to display on the screen
*/
private void fillData() {
// Get all of the rows from the database and create the item list
myTeaCursor = myDBHelper.callUpAllTeas();
startManagingCursor(myTeaCursor);
// Create an array to specify the fields we want to display in
the list (only NAME)
String[] from = new String[]{TeaDB.KEY_NAME};
// and an array of the fields we want to bind those fields to
(in this case just text1)
int[] to = new int[]{R.id.list};
// Now create a simple cursor adapter and set it to display
// SimpleCursorAdapter tea =
// new SimpleCursorAdapter(this, R.layout.main,
myTeaCursor, from, to);
// setListAdapter(tea);
ListAdapter test = new SimpleCursorAdapter(this,
R.layout.main, myTeaCursor, from, to);
setListAdapter(test);
// setListAdapter(new ArrayAdapter<String>(this,
//android.R.layout.simple_list_item_1, from));
}
/**
* Create the Menu (Add + Delete)
*/
public boolean onCreateOptionsMenu(Menu menu) {
super.onCreateOptionsMenu(menu);
menu.add(0, ADD_ID, R.string.menu_add);
menu.add(0, DELETE_ID, R.string.menu_delete);
return true;
}
/**
* Activity Handler for the menu buttons (Add + Delete)
*/
public boolean onMenuItemSelected(int featureId, Item item) {
switch(item.getId()) {
case ADD_ID:
createTea();
return true;
case DELETE_ID:
myDBHelper.deleteTea(4);
//fillData();
return true;
}
return super.onMenuItemSelected(featureId, item);
}
/**
*/
private void createTea() {
Intent i = new Intent(this, TeaEdit.class);
startSubActivity(i, ACTIVITY_CREATE);
}
If you press the "ADD" Button you come to the following activity which
allows you to add data. When I press the Button "CONFIRM" the saving
of the data in the database works, but also the error message
mentioned above shows up:
public class TeaEdit extends Activity {
private EditText myNameText;
private EditText myBrewTimeText;
private Long myRowId;
private TeaDB myDBHelper;
@Override
protected void onCreate(Bundle icicle) {
super.onCreate(icicle);
setContentView(R.layout.tea_add);
myNameText = (EditText) findViewById(R.id.name);
myBrewTimeText = (EditText) findViewById(R.id.brewTime);
Button confirmButton = (Button) findViewById(R.id.confirm);
myDBHelper = new TeaDB(this);
myDBHelper.open();
confirmButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
myDBHelper.createTea(myNameText.getText().toString(),
Integer.valueOf(myBrewTimeText.getText().toString()));
myDBHelper.close();
setResult(RESULT_OK, null, null);
finish();
}
});
}
}
So if it helps, it would be great. Can you also please tell me where I
can find the "stack trace in logcat"?
Thank you
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