Question

用户点击微调器，我提供了一堆使用Unit.toString()方法显示值的Unit实例。该方法提供了一个包含全名和缩写的字符串。在用户做出选择之后，我只想在微调器中显示缩写，因为toString方法的输出很长。

我的onCreate方法中的初始化：

this.spinner = (Spinner)this.findViewById(R.id.om_addIngredientDialog_unit);
ArrayAdapter<Unit> adapter = new ArrayAdapter<Unit>(context, R.layout.om_addingredientdialog_spinner, R.id.om_addIngredientDialog_spinner, DAOUnit.getAllArray(this.dbAdapter.getMDb()));
this.spinner.setAdapter(adapter);

这是我的Unit课程：

public class Unit implements Serializable{

    private long id;
    private String name;
    private String abbreviation;

    public Unit(){}

    public Unit(long id, String name, String abbreviation){
        super();
        this.id = id;
        this.name = name;
        this.abbreviation = abbreviation;
    }

    public void setId(long id){
        this.id = id;
    }

    public long getId(){
        return id;
    }

    public void setName(String name){
        this.name = name;
    }

    public String getName(){
        return name;
    }

    public void setAbbreviation(String abbreviation){
        this.abbreviation = abbreviation;
    }

    public String getAbbreviation(){
        return abbreviation;
    }

    @Override
    public String toString(){
        if(this.abbreviation == null || this.abbreviation.length() == 0){
            return this.name;
        }

        StringBuilder sb = new StringBuilder();
        sb.append(this.name).append("(").append(this.abbreviation).append(")");
        return sb.toString();
    }
}

有什么方法可以实现上述输出吗？谢谢你的帮助！

谢谢，

昆

Answer 1

创建自己的ArrayAdapter子类并覆盖getView()，就像使用ListView一样，使用缩写而不是普通的toString()值。

Answer 2

谢谢！这样做了：）

以下是我的更改：

ArrayAdapter<Unit> adapter =new SpinnerArrayAdapter(context, R.layout.om_addingredientdialog_spinner, R.id.om_addIngredientDialog_spinner, DAOUnit.getAllArray(this.dbAdapter.getMDb()));
this.spinner.setAdapter(adapter);

和适配器：

public class SpinnerArrayAdapter extends ArrayAdapter<Unit>{

    private LayoutInflater inflater = null;
    private int resourceLayout = 0;

    public SpinnerArrayAdapter(Context context, int resourceLayout, int textViewResourceId, Unit[] units){
        super(context, resourceLayout, textViewResourceId, units);
        this.inflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        this.resourceLayout = resourceLayout;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent){
        View view;
        if(convertView == null){
            view = this.inflater.inflate(this.resourceLayout, parent, false);
        }else{
            view = convertView;
        }

        Unit unit = this.getItem(position);
        TextView textView = (TextView)view;
        textView.setText(unit.getAbbreviation());
        return view;
    }
}

再次感谢：）

如何只缩写Spinner的选定项？

2 个答案: