我怎样才能加载的ListView动态取决于从微调价值 [英] How Can i Load ListView Dynamically Depends on the Value from Spinner

问题描述

我有一个微调，编辑文字，按钮，在视图列表视图。我想我的加载从的ListView数据库上的微调值取决于。和我做对列表视图还添加操作。

我的怀疑是，我想知道我可以载入我的列表视图依赖于从微调的数据？

 公共MyClass类扩展ListActivity实现OnClickListener {
DatabaseFAM分贝;
微调否;
串选择;
用户的EditText;
按钮btnAdd;
串strselected;
ArrayList的＆LT;串GT;名单=新的ArrayList＆LT;串GT;（）;
ArrayAdapter＆LT;串GT; adapterLV;@覆盖
保护无效的onCreate（捆绑savedInstanceState）{
    super.onCreate（savedInstanceState）;
    的setContentView（R.layout.myews）;
    DB =新DatabaseFAM（getApplicationContext（））;
    initVar（）;
}
私人无效initAudit2Var（）{
    否=（微调）findViewById（R.id.station）;
    用户=（EditText上）findViewById（R.id.er）;
    btnAdd =（按钮）findViewById（R.id.btnAdd）;
    btnAdd.setOnClickListener（本）;
    adapterLV =新ArrayAdapter＆LT;串GT;（这一点，
            android.R.layout.simple_list_item_multiple_choice，清单）;
    setListAdapter（adapterLV）;
    最后DatabaseFAM DB =新DatabaseFAM（getApplicationContext（））;
    清单＆LT;串GT;站= db.getAllstation（）;
    ArrayAdapter＆LT;串GT; stationAdapter =新ArrayAdapter＆LT;串GT;（
            getApplicationContext（），android.R.layout.simple_spinner_item，
            站）;
    stationAdapter
            .setDropDownViewResource（android.R.layout.simple_spinner_dropdown_item）;
    No.setAdapter（stationAdapter）;
    No.setOnItemSelectedListener（新OnItemSelectedListener（）{
                @覆盖
                公共无效onItemSelected（适配器视图＆LT;＆GT;为arg0，ARG1查看，
                        INT ARG2，长ARG3）{
                    选择= arg0.getItemAtPosition（
                            ARG2）的ToString（）;
                    list.clear（）;
                    清单= db.getTag（选择）;
                    adapterLV.notifyDataSetChanged（）;                }                @覆盖
                公共无效onNothingSelected（适配器视图＆LT;＆GT;为arg0）{                }
            }）;
}
 

解决方案

  = SP1（微调）findViewById（R.id.spinner1）;
          sp1.setOnItemSelectedListener（新OnItemSelectedListener（）{            @覆盖
            公共无效onItemSelected（适配器视图＆LT;＆GT;为arg0，ARG1查看，
                    INT POS，长ARG3）{
                //装入列表在这里
                }}
 

I have a Spinner,Edit Text, Button and a List View in a View. I want to Load my ListView from database Depends on the value from spinner. and i'm doing add operation on List View also.

My Doubt is that i wanted to know how can i load my list view depends on the data from spinner?

public class myClass extends ListActivity implements OnClickListener {
DatabaseFAM db;
Spinner No;
String Selected;
EditText user;
Button btnAdd;
String strselected;
ArrayList<String> list =new ArrayList<String>();
ArrayAdapter<String> adapterLV;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.myews);
    db = new DatabaseFAM(getApplicationContext());
    initVar();
}


private void initAudit2Var() {
    No = (Spinner) findViewById(R.id.station);
    user = (EditText) findViewById(R.id.er);
    btnAdd = (Button) findViewById(R.id.btnAdd);
    btnAdd.setOnClickListener(this);
    adapterLV = new ArrayAdapter<String>(this,
            android.R.layout.simple_list_item_multiple_choice, list);
    setListAdapter(adapterLV);
    final DatabaseFAM db = new DatabaseFAM(getApplicationContext());
    List<String> station = db.getAllstation();
    ArrayAdapter<String> stationAdapter = new ArrayAdapter<String>(
            getApplicationContext(), android.R.layout.simple_spinner_item,
            station);
    stationAdapter
            .setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
    No.setAdapter(stationAdapter);
    No.setOnItemSelectedListener(new OnItemSelectedListener() {
                @Override
                public void onItemSelected(AdapterView<?> arg0, View arg1,
                        int arg2, long arg3) {
                    Selected = arg0.getItemAtPosition(
                            arg2).toString();   
                    list.clear();
                    list=db.getTag(Selected);
                    adapterLV.notifyDataSetChanged();

                }

                @Override
                public void onNothingSelected(AdapterView<?> arg0) {

                }
            });
}

解决方案

          sp1 = (Spinner)findViewById(R.id.spinner1);
          sp1.setOnItemSelectedListener(new OnItemSelectedListener() {

            @Override
            public void onItemSelected(AdapterView<?> arg0, View arg1,
                    int pos, long arg3) {
                // Load your list here
                }}

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