Adding Custom Object To Arraylist On Button Click

I'm a little lost here. I'm trying to add a custom object(with 3 integers, 1 double, and 1 date) to an arraylist when a button is clicked. I want the arraylist to be shown in anoth

Solution 1:

I think the problem is that you have two different adapters:

RecordAdapteradapter=newRecordAdapter(getApplicationContext(),R.layout.custom_record);
ArrayAdapter<Record> arrayAdapter = newArrayAdapter<Record>(this, R.layout.custom_record, records);

You should use one or the other, not both. It appears that arrayAdapter should work. So change all of your code to use it.

Alternatively, you can use your custom RecordAdapter. If you do this, then you should create the ArrayList inside this class. Then when the user clicks a button, you send the new Record object to the RecordAdapter instance. The easiest way to do this is to add a addRecord() method to RecordAdapter.

Get Current Date:

All you need to do is create a new Date object:

Date currentDate = newDate();

See the linked javadocs for details about how to use Date.

Solution 2:

You do not need the custom RecordAdapter. Nor do you need the ArrayList. You can treat your ArrayAdapter as an ArrayList that feeds into your ListView. All you need to do is create an ArrayAdapter and populate it the same way you do with the ArrayList:

public ArrayAdapter<Record> records = new ArrayAdapter<>(getApplicationContext(), R.layout.custom_record);
maxTotal = maxDead + maxBench + maxSquat;
int maxDead = Integer.parseInt(mEditTextDead.getText().toString());
int maxSquat = Integer.parseInt(mEditTextSquat.getText().toString());
int maxBench = Integer.parseInt(mEditTextBench.getText().toString());


records.add(new Record(maxSquat, maxBench, maxDead, maxTotal ));

Then, whenever you want to add a record to you listview, use this:

records.add(new Record(maxSquat, maxBench, maxDead, maxTotal));

EDIT:

Forgot a very important part. You need to get your ListView and set the ArrayAdapter to populate it.

ListViewlistViewRec= (ListView) findViewById(R.id.listViewRecord);
listViewRec.setAdapter(records);