android - 选择项目时如何防止对话框关闭

Question

我有一个与项目的对话:

final String[] items = new String[] { "item1", "item2" };

AlertDialog.Builder adb = new AlertDialog.Builder(this).setTitle("Title");
adb.setCancelable(false);
adb.setItems(items, new OnClickListener() {

    @Override
    public void onClick(DialogInterface d, int n) {
        Toast.makeText(MainActivity.this, items[n], Toast.LENGTH_LONG).show();
    });
}

AlertDialog alert = adb.create();
alert.setCancelable(false);
alert.show();

选择一个项目时，将显示 Toast 并关闭对话框。我怎样才能禁用它？我希望在选择项目后对话框仍然保持打开状态。

Answer 1

将 setItems 方法中的第二个参数设置为 null，并将项目监听器附加到作为对话框一部分的 ListView :

var alertDialog: AlertDialog? = null
val builder = AlertDialog.Builder(context!!, R.style.alertDialogTheme)
    .setItems(items.toTypedArray(), null)
    .setTitle("My Dialog Title")
    .setPositiveButton(
        "OK"
    ) { dialog, id ->
        dialog.dismiss()
    }.setNegativeButton(
        "Cancel"
    ) { dialog, id ->
        dialog.dismiss()
    }

alertDialog = builder.show()
alertDialog.listView.setOnItemClickListener(object: AdapterView.OnItemClickListener {
    override fun onItemClick(p0: AdapterView<*>?, p1: View?, p2: Int, p3: Long) {
        // Do something with item click.
    }
})
alertDialog.setCancelable(false)