Android 选择微调器项目时，列表不会更改

我有一个活动，它有一个微调器来选择一天，还有一个列表，根据从微调器中选择的项目显示列表项目

我正在查询sqlite数据库，在spinner上选择的不同项目必须使用不同的查询

我正在使用一个简单的游标适配器

我已经为微调器设置了onItemSelectedAdapterView父视图、视图视图、int位置和long id。在这种情况下，我检查所选微调器项目是否等于今天

如果是这样，我需要更改显示的列表

我的问题是，无论选择哪个微调器项，列表都保持不变。它不会改变

请注意，我的微调器和列表位于同一页上。有人能提出解决方案吗

public class RecentJobListActivity extends Activity {

    ListView listView ;
    private Spinner spinner;
    private TakenJobDataBaseOpenHelper jobDatabaseHelper; 
    private Cursor cursor;
    SimpleCursorAdapter cursoradapter;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_recent_job_list);

        addItemsOnSpinner();

         //This is the database helper class     
         jobDatabaseHelper = new TakenJobDataBaseOpenHelper(this);


         String[] fromColumns = {TakenJobDataBaseOpenHelper.TAKENJOBS_COLUMN_RequestID,TakenJobDataBaseOpenHelper.TAKENJOBS_COLUMN_Destination,TakenJobDataBaseOpenHelper.TAKENJOBS_COLUMN_CustomerName};
         int[] toViews = {R.id.singleRequestID, R.id.singleDestination,R.id.singleCustomerName};

                 //when the page first loads the result of queru getAlljobs() will be shown.this works
          cursor = jobDatabaseHelper.getAllJobs();


          cursoradapter = new SimpleCursorAdapter(this, 
                R.layout.single_job_activity, cursor, fromColumns, toViews, 0);

         listView = (ListView)findViewById(R.id.activities_list);
         listView.setAdapter(cursoradapter);

    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {

        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.recent_job_list, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();
        if (id == R.id.action_settings) {
            return true;
        }
        return super.onOptionsItemSelected(item);
    }

public void addItemsOnSpinner(){

        spinner = (Spinner) findViewById(R.id.time_periods_spinner);    
        ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(this,
                R.array.time_periods_array, android.R.layout.simple_spinner_item);
    adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        // Apply the adapter to the spinner
        spinner.setAdapter(adapter);

        spinner.setOnItemSelectedListener(new OnItemSelectedListener() {

            @Override
            public void onItemSelected(AdapterView<?> parent, View view,
                    int position, long id) {
                // TODO Auto-generated method stub

                String s =  parent.getItemAtPosition(position).toString();

               //even the log doesn't show. 
                if(s.equals("Today")){
                    Log.d("today","today");
                    cursor = jobDatabaseHelper.getTodayJobs();
                    cursoradapter.notifyDataSetChanged();

                 }


            }

            @Override
            public void onNothingSelected(AdapterView<?> arg0) {
                // TODO Auto-generated method stub

            }
        });


    }

}

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谢谢你

尝试使用CursorAdapter.swapCursor。这应该可以工作。

如果日志未显示，则它未进入If条件。你确定价值是今天吗？记住这是区分大小写的访问没问题，如果您不介意，您可以将答案标记为正确吗？@user3747092您可以将此答案标记为正确吗？