Android 中日期控件与下拉列表的使用

1、在一个EditText 中单击一下可以弹出日期对话框：

    private static int START;    private int mYear;    private int mMonth;    private int mDay;

    private class SetParaImpl implements OnClickListener {        @Override        public void onClick(View v) {            switch (v.getId()) {            case R.id.start_time:                START = 1;                new DatePickerDialog(MainActivity.this, mDateSetListener, mYear, mMonth, mDay).show();                break;            case R.id.end_time:                START = 2;                new DatePickerDialog(MainActivity.this, mDateSetListener, mYear, mMonth, mDay).show();                break;            case R.id.set_param:                startActivity(new Intent(MainActivity.this, EnvironmentSetActivity.class));                break;            case R.id.query:                startActivity(new Intent(MainActivity.this, AchartengineActivity.class));                break;            default:                break;            }        }    }

    private DatePickerDialog.OnDateSetListener mDateSetListener = new DatePickerDialog.OnDateSetListener() {        @Override        public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) {            mYear = year;            mMonth = monthOfYear;            mDay = dayOfMonth;            if (START == 1) {                JavaUtils.updateDisplay(START, startTime, mYear, mMonth, mDay);            } else if (START == 2) {                JavaUtils.updateDisplay(START, endTime, mYear, mMonth, mDay);            }        }    };

2、

public class JavaUtils {    public static void updateDisplay(int start, EditText view, int mYear, int mMonth, int mDay) {        if (start == 1) {            view.setText(new StringBuilder().append(mYear).append("-").append((mMonth + 1) < 10 ? "0" + (mMonth + 1) : (mMonth + 1)).append("-").append((mDay + 1) < 10 ? "0" + (mDay) : (mDay)));        } else {            view.setText(new StringBuilder().append(mYear).append("-").append((mMonth + 1) < 10 ? "0" + (mMonth + 1) : (mMonth + 1)).append("-").append((mDay + 1) < 10 ? "0" + (mDay) : (mDay)));        }    }}

3、下拉列表的使用：

            condition = (Spinner) view.findViewById(R.id.condition);            adapterItem = ArrayAdapter.createFromResource(GreenHouseActivity.this, R.array.condition, android.R.layout.simple_spinner_item); // 从资源文件中读取选项内容            adapterItem.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); // 设置列表显示风格            condition.setAdapter(adapterItem); // 设置下拉列表选项            condition.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {                @Override                public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {                    android.util.Log.d("mark", "p=" + position);                }                @Override                public void onNothingSelected(AdapterView<?> parent) {                    // TODO Auto-generated method stub                }            });

note：R.array.condition 放置在values 文件下的array.xml 中：

<?xml version="1.0" encoding="utf-8"?>            月        周        天        6小时

自定义下拉列表：

    private void homeSeceneMode() {        ArrayAdapter adapterMode = null; // 下拉列表内容适配器        List data = new CURDTable(this).allSeceneMode();        if (data != null) {            adapterMode = new ArrayAdapter(this, android.R.layout.simple_spinner_item, data);            adapterMode.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); // 设置下拉列表显示风格            this.homeSeceneMode.setAdapter(adapterMode);        }    }

    public List allSeceneMode() {        db = this.helper.getReadableDatabase();        List info = new ArrayList();        String sql = "select name  from secene_mode_tb";        Cursor cursor = db.rawQuery(sql, null);        while (cursor.moveToNext()) {              info.add(cursor.getString(cursor.getColumnIndex("name")));        }        db.close();        return info;    }

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