Android日期选择控件DatePicker用法

本例通过点击button显示DatePicker对话框

先看截图

布局文件很简单，只是一个Button

首先获取系统时间

private int mYear;
private int mMonth;
private int mDay;
private Calendar calendar;

calendar = Calendar.getInstance();
mYear = calendar.get(Calendar.YEAR);
mMonth = calendar.get(Calendar.MONTH);
mDay = calendar.get(Calendar.DAY_OF_MONTH);

下面来看一下如何显示DatePicker

有两种方法：

一、直接new一个Dialog

mBtnBirthday.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {
                //mDateSetListener监听用户选择
                //mYear, mMonth, mDay当前日期
                new DatePickerDialog(SettingsEditUserInfo.this,
                        mDateSetListener, mYear, mMonth, mDay).show();
            }
        });

二、使用showDialog显示

private static final int DATE_DIALOG_ID = 1;

showDialog(DATE_DIALOG_ID);

 

/**
     * 当显示时间窗口被创建时调用
     */
    @Override
    protected Dialog onCreateDialog(int id) {
        switch (id) {
        case DATE_DIALOG_ID:
            return new DatePickerDialog(this, mDateSetListener, mYear, mMonth,
                    mDay);
        }
        return null;
    }

    @Override
    protected void onPrepareDialog(int id, Dialog dialog) {
        switch (id) {
        case DATE_DIALOG_ID:
            ((DatePickerDialog) dialog).updateDate(mYear, mMonth, mDay);
            break;
        default:
            break;
        }
    }

设置显示当前日期

/**
     * 设置日期
     */
    private void setDateTime() {
        final Calendar c = Calendar.getInstance();

        mYear = c.get(Calendar.YEAR);
        mMonth = c.get(Calendar.MONTH);
        mDay =c.get(Calendar.DAY_OF_MONTH);

        //更新Button上显示的日期

        updateDateDisplay(); }

监听事件

/**
     * 监听日期变化
     */
    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;
            //更新Button上显示的日期
            updateDateDisplay();
        }
    };

/**
     * 更新日期显示(记得month要+1，因为DatePicker索引是0-11)
     */
    private void updateDateDisplay() {
        mBtnBirthday.setText(new StringBuilder().append(mYear).append("-")
                .append(mMonth + 1).append("-").append(mDay));
    }

over