如何通过单击每个按钮将多个项目添加到ListView

Question

I found much on google but not able to get the answer. I got How to add an item to a ListView with each Button click . here we are learning to add single item.. thanks in advance

Answer 1

Any reason why you can't try the following?

@Override
public void onClick(View v) {
    myDataArray.add(data1);
    myDataArray.add(data2);
    myAdapter.notifyDataSetChanged();
}

Answer 2

Just like in the answer provided in the question you've shared, to add two items -

1) add both the data to the array

2) notify data set changes

// Add the data fields to the array
dataArray.add(0, dataField1);
dataArray.add(1, dataField2);
// Notify the adapter that data set has changed
adapter.notifyDataSetChanged();

Try dataArray.add(dataField) inside the button's onClick and notify the adapter about the changes. Every time the button is clicked, an item gets added at the end of the list.

Answer 3

So if you want to do this statically

ListView<String> list = new ListView<String>();
    ObservableList<String> items = FXCollections.observableArrayList(
            "something1", "something2", "something3");
    list.setItems(items); 

But if you want to do this dinamically you can use this code:

ListView<String> list = new ListView<String>();
    ObservableList<String> items = FXCollections.observableArrayList(
            "something1", "something2", "something3");
    list.setItems(items);

 list.setEditable(true);

    Button btn = new Button();
    btn.setText("Add String");
    btn.setOnAction((ActionEvent event) -> {
        list.getItems().add(i - 1, "something" + i);
        list.edit(i - 2);
        i++;
    });