android - 获取定制旋转器项目

Question

我实现了自定义微调器:

 public class MyAdapter extends ArrayAdapter<String>
        {

                public MyAdapter(Context context, int textViewResourceId,
                            String[] objects) {
                      super(context, textViewResourceId, objects);
                      // TODO Auto-generated constructor stub
                }
                @Override
            public View getDropDownView(int position, View convertView,ViewGroup parent) {
                return getCustomView(position, convertView, parent);
            }

            @Override
            public View getView(int position, View convertView, ViewGroup parent) {
                return getCustomView(position, convertView, parent);
            }

            public View getCustomView(int position, View convertView, ViewGroup parent) {

                LayoutInflater inflater=getLayoutInflater();
                View row= inflater.inflate(R.layout.spinner, parent, false);
                TextView label=(TextView)row.findViewById(R.id.textView1);
                label.setText(data1[position]);

                ImageView icon=(ImageView)row.findViewById(R.id.imageView1);
                icon.setImageResource(images[position]);

                return row;
                }

       }

并设置为这样的微调器:

spinner_choose_network_spinner.setAdapter(new MyAdapter(this, R.layout.spinner, data1));

我的问题是如何获取微调器当前所选项目的 textview 值？

Answer 1

Object selection = sp.getSelectedItem();

这将返回您可以从中查询信息的所选项目

在您的适配器中，您需要实现getItem(intposition)

并返回所需的项目，选择将是getItem(selectedPosition)

假设你的 getItem 是

public String getItem(int position){
return data1[position];

}

然后String selected = spinner.getSelectedItem();

将返回data1[selectedPosition]

为了简单起见，我建议您创建一个新对象

public class MyCustomObject{

    String title;
    int imageResource;

}

然后你的数据数组将是

ArrayList<MyCustomObject>data = new ArrayList<MyCustomObject>();

以某种方式填充这个数组

现在你的行将是

        public View getCustomView(int position, View convertView, ViewGroup parent) {

            LayoutInflater inflater=getLayoutInflater();
            View row= inflater.inflate(R.layout.spinner, parent, false);
            TextView label=(TextView)row.findViewById(R.id.textView1);
            label.setText(data.get(position).title);

            ImageView icon=(ImageView)row.findViewById(R.id.imageView1);
            icon.setImageResource(data.get(position).imageResource);

            return row;
            }

然后你的 getItem 将是

public MyCustomObject getItem(int position){

return data.get(position);
}

然后您的选择将是

MyCustomObject selection = spinner.getSelectedItem();

您可以看到 selection.title 以及 selection.imageResource 如果您需要的话将可用