Spinner的使用

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private Spinner mSpinner；

mSpinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {    @Override    public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {        String[] languages = getResources().getStringArray(R.array.languages);        switch (languages[position]) {            case "今天":                String nowDateTime = getDate.getNowDateTime();                infoList = selectVisitorInfoByDate(nowDateTime);                adapter.notifyDataSetChanged();                mTvNameCount.setText("统计记录: " + infoList.size() + " 条 ");                break;            case "本周":                String week = getDate.getMondayOFWeek();                infoList = selectVisitorInfoByDate(week);                adapter.notifyDataSetChanged();                mTvNameCount.setText("统计记录: " + infoList.size() + " 条 ");                break;            case "本月":                String dayOfMonth = getDate.getFirstDayOfMonth();                infoList = selectVisitorInfoByDate(dayOfMonth);                adapter.notifyDataSetChanged();                mTvNameCount.setText("统计记录: " + infoList.size() + " 条 ");                break;            case "全部":                infoList = queryUserList();                adapter.notifyDataSetChanged();                mTvNameCount.setText("统计记录: " + infoList.size() + " 条 ");                break;        }

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