How to add data to an android listview?

1 year ago
Jackson Davis
1 minute

To add data to an Android ListView, you need to follow these steps:

  1. Create an ArrayList to store the data that will be added to the ListView. For example:
ArrayList<String> dataList = new ArrayList<>();
  1. Create an adapter to bind data to a ListView. The adapter acts as a bridge between the ListView and the data. You can use either an ArrayAdapter or a custom adapter to achieve this. If you just want to display basic text data, you can use an ArrayAdapter. For example:
ArrayAdapter<String> adapter = new ArrayAdapter<>(this, android.R.layout.simple_list_item_1, dataList);
  1. Set the adapter for the ListView. For example:
ListView listView = findViewById(R.id.listView);
listView.setAdapter(adapter);
  1. Dynamically add data by modifying the data source, such as an ArrayList. For example:
dataList.add("数据1");
dataList.add("数据2");
// 添加更多数据...
adapter.notifyDataSetChanged();

Please make sure to call adapter.notifyDataSetChanged() method to notify the adapter that the data has been changed.

By following the above steps, you can add data to an Android ListView.

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