Question

我用checkedtextview实现了listview。现在，我想访问那些已检查的listview项目。我已经设置了onItemClickListener，但是如何知道检查了哪些项？如果单击它，则会自动调用侦听器，它仅计算listview的第一项：

如何确定检查哪些checktext视图，我的意思是如何遍历listview如何？

public void onStart() {
    super.onStart();

    ListView ch1 = (ListView) findViewById(R.id.listviewdb);
    ch1.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);

    DBAdapter db = new DBAdapter(this);
    db.openDB();

    Cursor c = db.getAllNumbers();

    final String[] items = new String[c.getCount()];
    int i = 0;

    while (c.moveToNext()) {
        String name;
        name = c.getString(1);

        items[i] = name;
        i++;
    }

    ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, R.layout.checkable_list_layout, R.id.txt_title, items);
    ch1.setAdapter(adapter);

    ch1.setOnItemClickListener(new AdapterView.OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
            CheckedTextView c = (CheckedTextView) findViewById(R.id.txt_title);
            if (c.isChecked() == true) {
                String selectedItem = c.getText().toString();
                Log.d("dbcontacts", selectedItem);
            }
        }
    });

}

Answer 1

您可以注意到position方法中有一个名为onItemClick的参数，它代表listView项目。

ch1.setOnItemClickListener(new AdapterView.OnItemClickListener() {
    @Override
    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
        CheckedTextView c = (CheckedTextView) findViewById(R.id.txt_title);
        if (c.isChecked() == true) {
            int selectedItemPosition = position;
            Log.d("dbcontacts", selectedItemPosition);
        }
    }
});

希望这会有所帮助

如何查看哪些listview项目被解雇？

1 个答案: