Question

我正在使用以下链接提供的代码 http://android-helper4u.blogspot.in/2013/03/d-databse-and-spinner-tutorial.html

如何为两个微调器编写setonItemSelectedListener。我想从数据库中获取微调器的选定数据。

Answer 1

试试这段代码。声明字符串如下所示

    private String[] colors1 = {"  Black","  Brown","  Red","  Orange","  Yellow","  Green","  Blue","  Violet","  Grey","  White"};
    private String[] colors2={"  Black","  Brown","  Red","  Orange","  Yellow","  Green","  Blue","  Violet","  Gold","  Silver"};
    String selstate1,selstate2;

并在oncreate（）中输入此代码

ArrayAdapter<String> adapter_state1 = new ArrayAdapter<String>(this,
        android.R.layout.simple_spinner_item, colors1);
adapter_state1
        .setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner1.setAdapter(adapter_state1);
spinner1.setSelection(0);
selstate1 = (String) spinner1.getSelectedItem();

 ArrayAdapter<String> adapter_state2 = new ArrayAdapter<String>(this,
         android.R.layout.simple_spinner_item, colors1);
 adapter_state2
            .setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner2.setAdapter(adapter_state2);
spinner2.setSelection(0);
selstate2 = (String) spinner2.getSelectedItem();

spinner1.setOnItemSelectedListener(this);
spinner2.setOnItemSelectedListener(this);
spinner3.setOnItemSelectedListener(this);
spinner4.setOnItemSelectedListener(this);

让您的活动实现OnItemSelectedListener并使用switch case

@Override
public void onItemSelected(AdapterView<?> parent, View v, int position,
        long id) {
    // TODO Auto-generated method stub
    switch (position) {
    case R.id.spinner1:
        spinner1.setSelection(position);
         selstate1 = (String) spinner1.getSelectedItem();
        break;
    case R.id.spinner2:
        spinner2.setSelection(position);
         selstate2 = (String) spinner2.getSelectedItem();
        break;

微调器的选定项目分别存储在selstate1和selstate2字符串中

如何在android中实现两个微调器？

1 个答案: