将自定义对象设置为微调器并显示特定特性

像这样更改模型类

public class Item{

private String id;
private String name;

 public String getId() {
    return id;
}

public String getName() {
    return name;
}

public String toString() {
return getName();
}

}

如下所示设置微调器适配器

ArrayAdapter<Item> adapter =
                        new ArrayAdapter<Item>(getActivity(), android.R.layout.simple_spinner_dropdown_item, dataNew);
spinner.setAdapter(adapter);

现在要获取所选项目的id,

 spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
        @Override
        public void onItemSelected(AdapterView<?> adapterView, View view, int i, long l) {
          //get id of the selected item using position 'i'
        }

        @Override
        public void onNothingSelected(AdapterView<?> adapterView) {

        }
    });

在你的课堂上 项目 设置为字符串()重写: 实例

@Override
public String toString() {
    return getName(); // You can add anything else like maybe getDrinkType()
}

layouts/layout\u微调器:

<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@android:id/text1"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:textSize="16sp"
    android:textColor="#000000"
    android:textAlignment="center"
    />

在java类中:

public void loadSpin(List<Item> itemList)
{
     ArrayAdapter<Item> adapter =
                new ArrayAdapter<Item>(YourActivity.this, R.layout.layout_spinner, itemList);
        adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);

        yourSpinner.setSelection(0);
        yourSpinner.setAdapter(adapter);
}