java - 使用 ArrayList 的 Android Spinner

Question

到目前为止，我一直在使用 XML 字符串数组中的微调器值，例如：

Spinner karant_sp; 
karant_sp = (Spinner) findViewById(R.id.spinner1); 
ArrayAdapter<CharSequence> karant_adapter = ArrayAdapter.createFromResource(this, R.array.karant_list, android.R.layout.simple_spinner_item);
karant_adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
karant_sp.setAdapter(karant_adapter);
karant_sp.setSelection(0);
karant_sp.setOnItemSelectedListener(new select_karant());

我可以使用本地 java ArrayList-String 作为要在下拉菜单中显示的项目列表吗？

就像是：

Spinner karant_sp; 
ArrayList<String> return_likes = new ArrayList<String>();
return_likes.add("Hello");
return_likes.add("world");
karant_sp = (Spinner) findViewById(R.id.spinner1); 
ArrayAdapter<CharSequence> karant_adapter = ArrayAdapter.createFromResource(this, return_likes, android.R.layout.simple_spinner_item);
karant_adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
karant_sp.setAdapter(karant_adapter);
karant_sp.setSelection(0);
karant_sp.setOnItemSelectedListener(new select_karant());

我知道上面的代码不起作用，但我想知道一些使用 ArrayList-string 的东西。

Answer 1

Yes. Just don't call createFromResource() on your Adapter. Use one of the constructors instead. Something like

ArrayAdapter<String> karant_adapter = new ArrayAdapter<String>(this,
     android.R.layout.simple_spinner_item, return_likes);

This is just an example you might have to change something else to get it working depending on what isn't working. But The ArrayAdapter Docs should help.