Android 自定义日期控件，包含月控件

实现的效果图如下：

一、页面布局

   custom_date_picker.xml

  

二、控件实现代码

     1.DatePickerView.java

package com.bc.lishui.ui.widget;

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.Paint.Align;
import android.graphics.Paint.FontMetricsInt;
import android.graphics.Paint.Style;
import android.os.Handler;
import android.os.Message;
import android.support.v4.content.ContextCompat;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.view.View;

import com.bc.lishui.R;

import java.util.ArrayList;
import java.util.List;
import java.util.Timer;
import java.util.TimerTask;

/**
 * Created by liuwan on 2016/9/28.
 */
public class DatePickerView extends View {

    private Context context;
    /**
     * 新增字段 控制是否首尾相接循环显示 默认为循环显示
     */
    private boolean loop = true;
    /**
     * text之间间距和minTextSize之比
     */
    public static final float MARGIN_ALPHA = 2.8f;
    /**
     * 自动回滚到中间的速度
     */
    public static final float SPEED = 10;
    private List mDataList;
    /**
     * 选中的位置，这个位置是mDataList的中心位置，一直不变
     */
    private int mCurrentSelected;
    private Paint mPaint, nPaint;
    private float mMaxTextSize = 80;
    private float mMinTextSize = 40;
    private float mMaxTextAlpha = 255;
    private float mMinTextAlpha = 120;
    private int mViewHeight;
    private int mViewWidth;
    private float mLastDownY;
    /**
     * 滑动的距离
     */
    private float mMoveLen = 0;
    private boolean isInit = false;
    private boolean canScroll = true;
    private onSelectListener mSelectListener;
    private Timer timer;
    private MyTimerTask mTask;

    private Handler updateHandler = new Handler() {
        @Override
        public void handleMessage(Message msg) {
            if (Math.abs(mMoveLen) < SPEED) {
                mMoveLen = 0;
                if (mTask != null) {
                    mTask.cancel();
                    mTask = null;
                    performSelect();
                }
            } else {
                // 这里mMoveLen / Math.abs(mMoveLen)是为了保有mMoveLen的正负号，以实现上滚或下滚
                mMoveLen = mMoveLen - mMoveLen / Math.abs(mMoveLen) * SPEED;
            }
            invalidate();
        }
    };

    public DatePickerView(Context context, AttributeSet attrs) {
        super(context, attrs);
        this.context = context;
        init();
    }

    public void setOnSelectListener(onSelectListener listener) {
        mSelectListener = listener;
    }

    private void performSelect() {
        if (mSelectListener != null) {
            mSelectListener.onSelect(mDataList.get(mCurrentSelected));
        }
    }

    public void setData(List datas) {
        mDataList = datas;
        mCurrentSelected = datas.size() / 4;
        invalidate();
    }

    /**
     * 选择选中的item的index
     */
    public void setSelected(int selected) {
        mCurrentSelected = selected;
        if (loop) {
            int distance = mDataList.size() / 2 - mCurrentSelected;
            if (distance < 0) {
                for (int i = 0; i < -distance; i++) {
                    moveHeadToTail();
                    mCurrentSelected--;
                }
            } else if (distance > 0) {
                for (int i = 0; i < distance; i++) {
                    moveTailToHead();
                    mCurrentSelected++;
                }
            }
        }
        invalidate();
    }

    /**
     * 选择选中的内容
     */
    public void setSelected(String mSelectItem) {
        for (int i = 0; i < mDataList.size(); i++) {
            if (mDataList.get(i).equals(mSelectItem)) {
                setSelected(i);
                break;
            }
        }
    }

    private void moveHeadToTail() {
        if (loop) {
            String head = mDataList.get(0);
            mDataList.remove(0);
            mDataList.add(head);
        }
    }

    private void moveTailToHead() {
        if (loop) {
            String tail = mDataList.get(mDataList.size() - 1);
            mDataList.remove(mDataList.size() - 1);
            mDataList.add(0, tail);
        }
    }

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
        mViewHeight = getMeasuredHeight();
        mViewWidth = getMeasuredWidth();
        // 按照View的高度计算字体大小
        mMaxTextSize = mViewHeight / 7f;
        mMinTextSize = mMaxTextSize / 2.2f;
        isInit = true;
        invalidate();
    }

    private void init() {
        timer = new Timer();
        mDataList = new ArrayList<>();
        //第一个paint
        mPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
        mPaint.setStyle(Style.FILL);
        mPaint.setTextAlign(Align.CENTER);
        mPaint.setColor(ContextCompat.getColor(context, R.color.text1));
        //第二个paint
        nPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
        nPaint.setStyle(Style.FILL);
        nPaint.setTextAlign(Align.CENTER);
        nPaint.setColor(ContextCompat.getColor(context, R.color.text2));
    }

    @Override
    protected void onDraw(Canvas canvas) {
        super.onDraw(canvas);
        // 根据index绘制view
        if (isInit) {
            drawData(canvas);
        }
    }

    private void drawData(Canvas canvas) {
        // 先绘制选中的text再往上往下绘制其余的text
        float scale = parabola(mViewHeight / 4.0f, mMoveLen);
        float size = (mMaxTextSize - mMinTextSize) * scale + mMinTextSize;
        mPaint.setTextSize(size);
        mPaint.setAlpha((int) ((mMaxTextAlpha - mMinTextAlpha) * scale + mMinTextAlpha));
        // text居中绘制，注意baseline的计算才能达到居中，y值是text中心坐标
        float x = (float) (mViewWidth / 2.0);
        float y = (float) (mViewHeight / 2.0 + mMoveLen);
        FontMetricsInt fmi = mPaint.getFontMetricsInt();
        float baseline = (float) (y - (fmi.bottom / 2.0 + fmi.top / 2.0));

        canvas.drawText(mDataList.get(mCurrentSelected), x, baseline, mPaint);
        // 绘制上方data
        for (int i = 1; (mCurrentSelected - i) >= 0; i++) {
            drawOtherText(canvas, i, -1);
        }
        // 绘制下方data
        for (int i = 1; (mCurrentSelected + i) < mDataList.size(); i++) {
            drawOtherText(canvas, i, 1);
        }
    }

    /**
     * @param position 距离mCurrentSelected的差值
     * @param type     1表示向下绘制，-1表示向上绘制
     */
    private void drawOtherText(Canvas canvas, int position, int type) {
        float d = MARGIN_ALPHA * mMinTextSize * position + type * mMoveLen;
        float scale = parabola(mViewHeight / 4.0f, d);
        float size = (mMaxTextSize - mMinTextSize) * scale + mMinTextSize;
        nPaint.setTextSize(size);
        nPaint.setAlpha((int) ((mMaxTextAlpha - mMinTextAlpha) * scale + mMinTextAlpha));
        float y = (float) (mViewHeight / 2.0 + type * d);
        FontMetricsInt fmi = nPaint.getFontMetricsInt();
        float baseline = (float) (y - (fmi.bottom / 2.0 + fmi.top / 2.0));
        canvas.drawText(mDataList.get(mCurrentSelected + type * position),
                (float) (mViewWidth / 2.0), baseline, nPaint);
    }

    /**
     * 抛物线
     *
     * @param zero 零点坐标
     * @param x    偏移量
     */
    private float parabola(float zero, float x) {
        float f = (float) (1 - Math.pow(x / zero, 2));
        return f < 0 ? 0 : f;
    }

    @Override
    public boolean onTouchEvent(MotionEvent event) {
        switch (event.getActionMasked()) {
            case MotionEvent.ACTION_DOWN:
                doDown(event);
                break;

            case MotionEvent.ACTION_MOVE:
                mMoveLen += (event.getY() - mLastDownY);
                if (mMoveLen > MARGIN_ALPHA * mMinTextSize / 2) {
                    if (!loop && mCurrentSelected == 0) {
                        mLastDownY = event.getY();
                        invalidate();
                        return true;
                    }
                    if (!loop) {
                        mCurrentSelected--;
                    }
                    // 往下滑超过离开距离
                    moveTailToHead();
                    mMoveLen = mMoveLen - MARGIN_ALPHA * mMinTextSize;
                } else if (mMoveLen < -MARGIN_ALPHA * mMinTextSize / 2) {
                    if (mCurrentSelected == mDataList.size() - 1) {
                        mLastDownY = event.getY();
                        invalidate();
                        return true;
                    }
                    if (!loop) {
                        mCurrentSelected++;
                    }
                    // 往上滑超过离开距离
                    moveHeadToTail();
                    mMoveLen = mMoveLen + MARGIN_ALPHA * mMinTextSize;
                }
                mLastDownY = event.getY();
                invalidate();
                break;

            case MotionEvent.ACTION_UP:
                doUp();
                break;
        }
        return true;
    }

    private void doDown(MotionEvent event) {
        if (mTask != null) {
            mTask.cancel();
            mTask = null;
        }
        mLastDownY = event.getY();
    }

    private void doUp() {
        // 抬起手后mCurrentSelected的位置由当前位置move到中间选中位置
        if (Math.abs(mMoveLen) < 0.0001) {
            mMoveLen = 0;
            return;
        }
        if (mTask != null) {
            mTask.cancel();
            mTask = null;
        }
        mTask = new MyTimerTask(updateHandler);
        timer.schedule(mTask, 0, 10);
    }

    class MyTimerTask extends TimerTask {
        Handler handler;

        public MyTimerTask(Handler handler) {
            this.handler = handler;
        }

        @Override
        public void run() {
            handler.sendMessage(handler.obtainMessage());
        }
    }

    public interface onSelectListener {
        void onSelect(String text);
    }

    public void setCanScroll(boolean canScroll) {
        this.canScroll = canScroll;
    }

    @Override
    public boolean dispatchTouchEvent(MotionEvent event) {
        return canScroll && super.dispatchTouchEvent(event);
    }

    /**
     * 控制内容是否首尾相连
     */
    public void setIsLoop(boolean isLoop) {
        loop = isLoop;
    }

}

2.CustomDatePicker.java

package com.bc.lishui.ui.widget;

import android.animation.ObjectAnimator;
import android.animation.PropertyValuesHolder;
import android.app.Dialog;
import android.content.Context;
import android.util.DisplayMetrics;
import android.view.Gravity;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;
import android.widget.TextView;

import com.bc.lishui.R;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Locale;

/**
 * Created by liuwan on 2016/9/28.
 */
public class CustomDatePicker {

    private static final String DATE_FORMAT="yyyy-MM-dd";
    private static final String TIME_FORMAT="yyyy-MM-dd HH:mm";
    /**
     * 定义结果回调接口
     */
    public interface ResultHandler {
        void handle(String time);
    }

    public enum SCROLL_TYPE {
        HOUR(1),
        MINUTE(2);

        SCROLL_TYPE(int value) {
            this.value = value;
        }

        public int value;
    }

    private int scrollUnits = SCROLL_TYPE.HOUR.value + SCROLL_TYPE.MINUTE.value;
    private ResultHandler handler;
    private Context context;
    private boolean canAccess = false;

    private Dialog datePickerDialog;
    private DatePickerView year_pv, month_pv, day_pv, hour_pv, minute_pv;

    private static final int MAX_MINUTE = 59;
    private static final int MAX_HOUR = 23;
    private static final int MIN_MINUTE = 0;
    private static final int MIN_HOUR = 0;
    private static final int MAX_MONTH = 12;

    private ArrayList year, month, day, hour, minute;
    private int startYear, startMonth, startDay, startHour, startMinute, endYear, endMonth, endDay, endHour, endMinute;
    private boolean spanYear, spanMon, spanDay, spanHour, spanMin;
    private Calendar selectedCalender, startCalendar, endCalendar;
    private TextView tv_cancle, tv_select,day_text, hour_text, minute_text;

    public CustomDatePicker(Context context, ResultHandler resultHandler, String startDate, String endDate) {
        if (isValidDate(startDate, TIME_FORMAT) && isValidDate(endDate, TIME_FORMAT)) {
            canAccess = true;
            this.context = context;
            this.handler = resultHandler;
            selectedCalender = Calendar.getInstance();
            startCalendar = Calendar.getInstance();
            endCalendar = Calendar.getInstance();
            SimpleDateFormat sdf = new SimpleDateFormat(TIME_FORMAT, Locale.CHINA);
            try {
                startCalendar.setTime(sdf.parse(startDate));
                endCalendar.setTime(sdf.parse(endDate));
            } catch (ParseException e) {
                e.printStackTrace();
            }
            initDialog();
            initView();
        }
    }

    private void initDialog() {
        if (datePickerDialog == null) {
            datePickerDialog = new Dialog(context, R.style.time_dialog);
            datePickerDialog.setCancelable(false);
            datePickerDialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
            datePickerDialog.setContentView(R.layout.custom_date_picker);
            Window window = datePickerDialog.getWindow();
            window.setGravity(Gravity.BOTTOM);
            WindowManager manager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
            DisplayMetrics dm = new DisplayMetrics();
            manager.getDefaultDisplay().getMetrics(dm);
            WindowManager.LayoutParams lp = window.getAttributes();
            lp.width = dm.widthPixels;
            window.setAttributes(lp);
        }
    }

    private void initView() {
        year_pv = (DatePickerView) datePickerDialog.findViewById(R.id.year_pv);
        month_pv = (DatePickerView) datePickerDialog.findViewById(R.id.month_pv);
        day_pv = (DatePickerView) datePickerDialog.findViewById(R.id.day_pv);
        hour_pv = (DatePickerView) datePickerDialog.findViewById(R.id.hour_pv);
        minute_pv = (DatePickerView) datePickerDialog.findViewById(R.id.minute_pv);
        tv_cancle = (TextView) datePickerDialog.findViewById(R.id.tv_cancle);
        tv_select = (TextView) datePickerDialog.findViewById(R.id.tv_select);
        day_text = (TextView) datePickerDialog.findViewById(R.id.day_text);
        hour_text = (TextView) datePickerDialog.findViewById(R.id.hour_text);
        minute_text = (TextView) datePickerDialog.findViewById(R.id.minute_text);

        tv_cancle.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                datePickerDialog.dismiss();
            }
        });

        tv_select.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                SimpleDateFormat sdf = new SimpleDateFormat(TIME_FORMAT, Locale.CHINA);
                handler.handle(sdf.format(selectedCalender.getTime()));
                datePickerDialog.dismiss();
            }
        });
    }

    private void initParameter() {
        startYear = startCalendar.get(Calendar.YEAR);
        startMonth = startCalendar.get(Calendar.MONTH) + 1;
        startDay = startCalendar.get(Calendar.DAY_OF_MONTH);
        startHour = startCalendar.get(Calendar.HOUR_OF_DAY);
        startMinute = startCalendar.get(Calendar.MINUTE);
        endYear = endCalendar.get(Calendar.YEAR);
        endMonth = endCalendar.get(Calendar.MONTH) + 1;
        endDay = endCalendar.get(Calendar.DAY_OF_MONTH);
        endHour = endCalendar.get(Calendar.HOUR_OF_DAY);
        endMinute = endCalendar.get(Calendar.MINUTE);
        spanYear = startYear != endYear;
        spanMon = (!spanYear) && (startMonth != endMonth);
        spanDay = (!spanMon) && (startDay != endDay);
        spanHour = (!spanDay) && (startHour != endHour);
        spanMin = (!spanHour) && (startMinute != endMinute);
        selectedCalender.setTime(startCalendar.getTime());
    }

    private void initTimer() {
        initArrayList();
        if (spanYear) {
            for (int i = startYear; i <= endYear; i++) {
                year.add(String.valueOf(i));
            }
            for (int i = startMonth; i <= MAX_MONTH; i++) {
                month.add(formatTimeUnit(i));
            }
            for (int i = startDay; i <= startCalendar.getActualMaximum(Calendar.DAY_OF_MONTH); i++) {
                day.add(formatTimeUnit(i));
            }

            if ((scrollUnits & SCROLL_TYPE.HOUR.value) != SCROLL_TYPE.HOUR.value) {
                hour.add(formatTimeUnit(startHour));
            } else {
                for (int i = startHour; i <= MAX_HOUR; i++) {
                    hour.add(formatTimeUnit(i));
                }
            }

            if ((scrollUnits & SCROLL_TYPE.MINUTE.value) != SCROLL_TYPE.MINUTE.value) {
                minute.add(formatTimeUnit(startMinute));
            } else {
                for (int i = startMinute; i <= MAX_MINUTE; i++) {
                    minute.add(formatTimeUnit(i));
                }
            }
        } else if (spanMon) {
            year.add(String.valueOf(startYear));
            for (int i = startMonth; i <= endMonth; i++) {
                month.add(formatTimeUnit(i));
            }
            for (int i = startDay; i <= startCalendar.getActualMaximum(Calendar.DAY_OF_MONTH); i++) {
                day.add(formatTimeUnit(i));
            }

            if ((scrollUnits & SCROLL_TYPE.HOUR.value) != SCROLL_TYPE.HOUR.value) {
                hour.add(formatTimeUnit(startHour));
            } else {
                for (int i = startHour; i <= MAX_HOUR; i++) {
                    hour.add(formatTimeUnit(i));
                }
            }

            if ((scrollUnits & SCROLL_TYPE.MINUTE.value) != SCROLL_TYPE.MINUTE.value) {
                minute.add(formatTimeUnit(startMinute));
            } else {
                for (int i = startMinute; i <= MAX_MINUTE; i++) {
                    minute.add(formatTimeUnit(i));
                }
            }
        } else if (spanDay) {
            year.add(String.valueOf(startYear));
            month.add(formatTimeUnit(startMonth));
            for (int i = startDay; i <= endDay; i++) {
                day.add(formatTimeUnit(i));
            }

            if ((scrollUnits & SCROLL_TYPE.HOUR.value) != SCROLL_TYPE.HOUR.value) {
                hour.add(formatTimeUnit(startHour));
            } else {
                for (int i = startHour; i <= MAX_HOUR; i++) {
                    hour.add(formatTimeUnit(i));
                }
            }

            if ((scrollUnits & SCROLL_TYPE.MINUTE.value) != SCROLL_TYPE.MINUTE.value) {
                minute.add(formatTimeUnit(startMinute));
            } else {
                for (int i = startMinute; i <= MAX_MINUTE; i++) {
                    minute.add(formatTimeUnit(i));
                }
            }
        } else if (spanHour) {
            year.add(String.valueOf(startYear));
            month.add(formatTimeUnit(startMonth));
            day.add(formatTimeUnit(startDay));

            if ((scrollUnits & SCROLL_TYPE.HOUR.value) != SCROLL_TYPE.HOUR.value) {
                hour.add(formatTimeUnit(startHour));
            } else {
                for (int i = startHour; i <= endHour; i++) {
                    hour.add(formatTimeUnit(i));
                }
            }

            if ((scrollUnits & SCROLL_TYPE.MINUTE.value) != SCROLL_TYPE.MINUTE.value) {
                minute.add(formatTimeUnit(startMinute));
            } else {
                for (int i = startMinute; i <= MAX_MINUTE; i++) {
                    minute.add(formatTimeUnit(i));
                }
            }
        } else if (spanMin) {
            year.add(String.valueOf(startYear));
            month.add(formatTimeUnit(startMonth));
            day.add(formatTimeUnit(startDay));
            hour.add(formatTimeUnit(startHour));

            if ((scrollUnits & SCROLL_TYPE.MINUTE.value) != SCROLL_TYPE.MINUTE.value) {
                minute.add(formatTimeUnit(startMinute));
            } else {
                for (int i = startMinute; i <= endMinute; i++) {
                    minute.add(formatTimeUnit(i));
                }
            }
        }
        loadComponent();
    }

    /**
     * 将“0-9”转换为“00-09”
     */
    private String formatTimeUnit(int unit) {
        return unit < 10 ? "0" + String.valueOf(unit) : String.valueOf(unit);
    }

    private void initArrayList() {
        if (year == null) year = new ArrayList<>();
        if (month == null) month = new ArrayList<>();
        if (day == null) day = new ArrayList<>();
        if (hour == null) hour = new ArrayList<>();
        if (minute == null) minute = new ArrayList<>();
        year.clear();
        month.clear();
        day.clear();
        hour.clear();
        minute.clear();
    }

    private void loadComponent() {
        year_pv.setData(year);
        month_pv.setData(month);
        day_pv.setData(day);
        hour_pv.setData(hour);
        minute_pv.setData(minute);
        year_pv.setSelected(0);
        month_pv.setSelected(0);
        day_pv.setSelected(0);
        hour_pv.setSelected(0);
        minute_pv.setSelected(0);
        executeScroll();
    }

    private void addListener() {
        year_pv.setOnSelectListener(new DatePickerView.onSelectListener() {
            @Override
            public void onSelect(String text) {
                selectedCalender.set(Calendar.YEAR, Integer.parseInt(text));
                monthChange();
            }
        });

        month_pv.setOnSelectListener(new DatePickerView.onSelectListener() {
            @Override
            public void onSelect(String text) {
                selectedCalender.set(Calendar.DAY_OF_MONTH, 1);
                selectedCalender.set(Calendar.MONTH, Integer.parseInt(text) - 1);
                dayChange();
            }
        });

        day_pv.setOnSelectListener(new DatePickerView.onSelectListener() {
            @Override
            public void onSelect(String text) {
                selectedCalender.set(Calendar.DAY_OF_MONTH, Integer.parseInt(text));
                hourChange();
            }
        });

        hour_pv.setOnSelectListener(new DatePickerView.onSelectListener() {
            @Override
            public void onSelect(String text) {
                selectedCalender.set(Calendar.HOUR_OF_DAY, Integer.parseInt(text));
                minuteChange();
            }
        });

        minute_pv.setOnSelectListener(new DatePickerView.onSelectListener() {
            @Override
            public void onSelect(String text) {
                selectedCalender.set(Calendar.MINUTE, Integer.parseInt(text));
            }
        });
    }

    private void monthChange() {
        month.clear();
        int selectedYear = selectedCalender.get(Calendar.YEAR);
        if (selectedYear == startYear) {
            for (int i = startMonth; i <= MAX_MONTH; i++) {
                month.add(formatTimeUnit(i));
            }
        } else if (selectedYear == endYear) {
            for (int i = 1; i <= endMonth; i++) {
                month.add(formatTimeUnit(i));
            }
        } else {
            for (int i = 1; i <= MAX_MONTH; i++) {
                month.add(formatTimeUnit(i));
            }
        }
        selectedCalender.set(Calendar.MONTH, Integer.parseInt(month.get(0)) - 1);
        month_pv.setData(month);
        month_pv.setSelected(0);
        executeAnimator(month_pv);

        month_pv.postDelayed(new Runnable() {
            @Override
            public void run() {
                dayChange();
            }
        }, 100);
    }

    private void dayChange() {
        day.clear();
        int selectedYear = selectedCalender.get(Calendar.YEAR);
        int selectedMonth = selectedCalender.get(Calendar.MONTH) + 1;
        if (selectedYear == startYear && selectedMonth == startMonth) {
            for (int i = startDay; i <= selectedCalender.getActualMaximum(Calendar.DAY_OF_MONTH); i++) {
                day.add(formatTimeUnit(i));
            }
        } else if (selectedYear == endYear && selectedMonth == endMonth) {
            for (int i = 1; i <= endDay; i++) {
                day.add(formatTimeUnit(i));
            }
        } else {
            for (int i = 1; i <= selectedCalender.getActualMaximum(Calendar.DAY_OF_MONTH); i++) {
                day.add(formatTimeUnit(i));
            }
        }
        selectedCalender.set(Calendar.DAY_OF_MONTH, Integer.parseInt(day.get(0)));
        day_pv.setData(day);
        day_pv.setSelected(0);
        executeAnimator(day_pv);

        day_pv.postDelayed(new Runnable() {
            @Override
            public void run() {
                hourChange();
            }
        }, 100);
    }

    private void hourChange() {
        if ((scrollUnits & SCROLL_TYPE.HOUR.value) == SCROLL_TYPE.HOUR.value) {
            hour.clear();
            int selectedYear = selectedCalender.get(Calendar.YEAR);
            int selectedMonth = selectedCalender.get(Calendar.MONTH) + 1;
            int selectedDay = selectedCalender.get(Calendar.DAY_OF_MONTH);
            if (selectedYear == startYear && selectedMonth == startMonth && selectedDay == startDay) {
                for (int i = startHour; i <= MAX_HOUR; i++) {
                    hour.add(formatTimeUnit(i));
                }
            } else if (selectedYear == endYear && selectedMonth == endMonth && selectedDay == endDay) {
                for (int i = MIN_HOUR; i <= endHour; i++) {
                    hour.add(formatTimeUnit(i));
                }
            } else {
                for (int i = MIN_HOUR; i <= MAX_HOUR; i++) {
                    hour.add(formatTimeUnit(i));
                }
            }
            selectedCalender.set(Calendar.HOUR_OF_DAY, Integer.parseInt(hour.get(0)));
            hour_pv.setData(hour);
            hour_pv.setSelected(0);
            executeAnimator(hour_pv);
        }

        hour_pv.postDelayed(new Runnable() {
            @Override
            public void run() {
                minuteChange();
            }
        }, 100);
    }

    private void minuteChange() {
        if ((scrollUnits & SCROLL_TYPE.MINUTE.value) == SCROLL_TYPE.MINUTE.value) {
            minute.clear();
            int selectedYear = selectedCalender.get(Calendar.YEAR);
            int selectedMonth = selectedCalender.get(Calendar.MONTH) + 1;
            int selectedDay = selectedCalender.get(Calendar.DAY_OF_MONTH);
            int selectedHour = selectedCalender.get(Calendar.HOUR_OF_DAY);
            if (selectedYear == startYear && selectedMonth == startMonth && selectedDay == startDay && selectedHour == startHour) {
                for (int i = startMinute; i <= MAX_MINUTE; i++) {
                    minute.add(formatTimeUnit(i));
                }
            } else if (selectedYear == endYear && selectedMonth == endMonth && selectedDay == endDay && selectedHour == endHour) {
                for (int i = MIN_MINUTE; i <= endMinute; i++) {
                    minute.add(formatTimeUnit(i));
                }
            } else {
                for (int i = MIN_MINUTE; i <= MAX_MINUTE; i++) {
                    minute.add(formatTimeUnit(i));
                }
            }
            selectedCalender.set(Calendar.MINUTE, Integer.parseInt(minute.get(0)));
            minute_pv.setData(minute);
            minute_pv.setSelected(0);
            executeAnimator(minute_pv);
        }
        executeScroll();
    }

    private void executeAnimator(View view) {
        PropertyValuesHolder pvhX = PropertyValuesHolder.ofFloat("alpha", 1f, 0f, 1f);
        PropertyValuesHolder pvhY = PropertyValuesHolder.ofFloat("scaleX", 1f, 1.3f, 1f);
        PropertyValuesHolder pvhZ = PropertyValuesHolder.ofFloat("scaleY", 1f, 1.3f, 1f);
        ObjectAnimator.ofPropertyValuesHolder(view, pvhX, pvhY, pvhZ).setDuration(200).start();
    }

    private void executeScroll() {
        year_pv.setCanScroll(year.size() > 1);
        month_pv.setCanScroll(month.size() > 1);
        day_pv.setCanScroll(day.size() > 1);
        hour_pv.setCanScroll(hour.size() > 1 && (scrollUnits & SCROLL_TYPE.HOUR.value) == SCROLL_TYPE.HOUR.value);
        minute_pv.setCanScroll(minute.size() > 1 && (scrollUnits & SCROLL_TYPE.MINUTE.value) == SCROLL_TYPE.MINUTE.value);
    }

    private int disScrollUnit(SCROLL_TYPE... scroll_types) {
        if (scroll_types == null || scroll_types.length == 0) {
            scrollUnits = SCROLL_TYPE.HOUR.value + SCROLL_TYPE.MINUTE.value;
        } else {
            for (SCROLL_TYPE scroll_type : scroll_types) {
                scrollUnits ^= scroll_type.value;
            }
        }
        return scrollUnits;
    }

    public void show(String time) {
        if (canAccess) {
            if (isValidDate(time, DATE_FORMAT)) {
                if (startCalendar.getTime().getTime() < endCalendar.getTime().getTime()) {
                    canAccess = true;
                    initParameter();
                    initTimer();
                    addListener();
                    setSelectedTime(time);
                    datePickerDialog.show();
                }
            } else {
                canAccess = false;
            }
        }
    }

    /**
     * 设置日期控件是否显示时和分
     */
    public void showSpecificTime(boolean show) {
        if (canAccess) {
            if (show) {
                disScrollUnit();
                hour_pv.setVisibility(View.VISIBLE);
                hour_text.setVisibility(View.VISIBLE);
                minute_pv.setVisibility(View.VISIBLE);
                minute_text.setVisibility(View.VISIBLE);
            } else {
                disScrollUnit(SCROLL_TYPE.HOUR, SCROLL_TYPE.MINUTE);
                hour_pv.setVisibility(View.GONE);
                hour_text.setVisibility(View.GONE);
                minute_pv.setVisibility(View.GONE);
                minute_text.setVisibility(View.GONE);
            }
        }
    }

    /**
     * 设置日期控件只显示年和月
     */
    public void hideDate(boolean show) {
        if (canAccess) {
            if (!show) {
                disScrollUnit();
                day_pv.setVisibility(View.VISIBLE);
                day_text.setVisibility(View.VISIBLE);
                hour_pv.setVisibility(View.VISIBLE);
                hour_text.setVisibility(View.VISIBLE);
                minute_pv.setVisibility(View.VISIBLE);
                minute_text.setVisibility(View.VISIBLE);
            } else {
                disScrollUnit(SCROLL_TYPE.HOUR, SCROLL_TYPE.MINUTE);
                day_pv.setVisibility(View.GONE);
                day_text.setVisibility(View.GONE);
                hour_pv.setVisibility(View.GONE);
                hour_text.setVisibility(View.GONE);
                minute_pv.setVisibility(View.GONE);
                minute_text.setVisibility(View.GONE);
            }
        }
    }

    /**
     * 设置日期控件是否可以循环滚动
     */
    public void setIsLoop(boolean isLoop) {
        if (canAccess) {
            this.year_pv.setIsLoop(isLoop);
            this.month_pv.setIsLoop(isLoop);
            this.day_pv.setIsLoop(isLoop);
            this.hour_pv.setIsLoop(isLoop);
            this.minute_pv.setIsLoop(isLoop);
        }
    }

    /**
     * 设置日期控件默认选中的时间
     */
    public void setSelectedTime(String time) {
        if (canAccess) {
            String[] str = time.split(" ");
            String[] dateStr = str[0].split("-");

            year_pv.setSelected(dateStr[0]);
            selectedCalender.set(Calendar.YEAR, Integer.parseInt(dateStr[0]));

            month.clear();
            int selectedYear = selectedCalender.get(Calendar.YEAR);
            if (selectedYear == startYear) {
                for (int i = startMonth; i <= MAX_MONTH; i++) {
                    month.add(formatTimeUnit(i));
                }
            } else if (selectedYear == endYear) {
                for (int i = 1; i <= endMonth; i++) {
                    month.add(formatTimeUnit(i));
                }
            } else {
                for (int i = 1; i <= MAX_MONTH; i++) {
                    month.add(formatTimeUnit(i));
                }
            }
            month_pv.setData(month);
            month_pv.setSelected(dateStr[1]);
            selectedCalender.set(Calendar.MONTH, Integer.parseInt(dateStr[1]) - 1);
            executeAnimator(month_pv);

            day.clear();
            int selectedMonth = selectedCalender.get(Calendar.MONTH) + 1;
            if (selectedYear == startYear && selectedMonth == startMonth) {
                for (int i = startDay; i <= selectedCalender.getActualMaximum(Calendar.DAY_OF_MONTH); i++) {
                    day.add(formatTimeUnit(i));
                }
            } else if (selectedYear == endYear && selectedMonth == endMonth) {
                for (int i = 1; i <= endDay; i++) {
                    day.add(formatTimeUnit(i));
                }
            } else {
                for (int i = 1; i <= selectedCalender.getActualMaximum(Calendar.DAY_OF_MONTH); i++) {
                    day.add(formatTimeUnit(i));
                }
            }
            day_pv.setData(day);
            day_pv.setSelected(dateStr[2]);
            selectedCalender.set(Calendar.DAY_OF_MONTH, Integer.parseInt(dateStr[2]));
            executeAnimator(day_pv);

            if (str.length == 2) {
                String[] timeStr = str[1].split(":");

                if ((scrollUnits & SCROLL_TYPE.HOUR.value) == SCROLL_TYPE.HOUR.value) {
                    hour.clear();
                    int selectedDay = selectedCalender.get(Calendar.DAY_OF_MONTH);
                    if (selectedYear == startYear && selectedMonth == startMonth && selectedDay == startDay) {
                        for (int i = startHour; i <= MAX_HOUR; i++) {
                            hour.add(formatTimeUnit(i));
                        }
                    } else if (selectedYear == endYear && selectedMonth == endMonth && selectedDay == endDay) {
                        for (int i = MIN_HOUR; i <= endHour; i++) {
                            hour.add(formatTimeUnit(i));
                        }
                    } else {
                        for (int i = MIN_HOUR; i <= MAX_HOUR; i++) {
                            hour.add(formatTimeUnit(i));
                        }
                    }
                    hour_pv.setData(hour);
                    hour_pv.setSelected(timeStr[0]);
                    selectedCalender.set(Calendar.HOUR_OF_DAY, Integer.parseInt(timeStr[0]));
                    executeAnimator(hour_pv);
                }

                if ((scrollUnits & SCROLL_TYPE.MINUTE.value) == SCROLL_TYPE.MINUTE.value) {
                    minute.clear();
                    int selectedDay = selectedCalender.get(Calendar.DAY_OF_MONTH);
                    int selectedHour = selectedCalender.get(Calendar.HOUR_OF_DAY);
                    if (selectedYear == startYear && selectedMonth == startMonth && selectedDay == startDay && selectedHour == startHour) {
                        for (int i = startMinute; i <= MAX_MINUTE; i++) {
                            minute.add(formatTimeUnit(i));
                        }
                    } else if (selectedYear == endYear && selectedMonth == endMonth && selectedDay == endDay && selectedHour == endHour) {
                        for (int i = MIN_MINUTE; i <= endMinute; i++) {
                            minute.add(formatTimeUnit(i));
                        }
                    } else {
                        for (int i = MIN_MINUTE; i <= MAX_MINUTE; i++) {
                            minute.add(formatTimeUnit(i));
                        }
                    }
                    minute_pv.setData(minute);
                    minute_pv.setSelected(timeStr[1]);
                    selectedCalender.set(Calendar.MINUTE, Integer.parseInt(timeStr[1]));
                    executeAnimator(minute_pv);
                }
            }
            executeScroll();
        }
    }

    /**
     * 验证字符串是否是一个合法的日期格式
     */
    private boolean isValidDate(String date, String template) {
        boolean convertSuccess = true;
        // 指定日期格式
        SimpleDateFormat format = new SimpleDateFormat(template, Locale.CHINA);
        try {
            // 设置lenient为false. 否则SimpleDateFormat会比较宽松地验证日期，比如2015/02/29会被接受，并转换成2015/03/01
            format.setLenient(false);
            format.parse(date);
        } catch (Exception e) {
            // 如果throw java.text.ParseException或者NullPointerException，就说明格式不对
            convertSuccess = false;
        }
        return convertSuccess;
    }

}

上面的代码都是我从网上复制的，忘记是链接地址了，应该是一位叫“liuwan”大咖分享的。

三、具体的使用

   1.初始化控件

private void initDatePicker() {
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm", Locale.CHINA);
        String now = sdf.format(new Date());

        startDatePicker = new CustomDatePicker(this, new CustomDatePicker.ResultHandler() {
            @Override
            public void handle(String time) { // 回调接口，获得选中的时间
                etStartDate.setText(time.substring(0,10).replace("-",""));
            }
        }, "2010-01-01 00:00", now); // 初始化日期格式请用：yyyy-MM-dd HH:mm，否则不能正常运行
        startDatePicker.showSpecificTime(false); // 不显示时和分
        startDatePicker.setIsLoop(false); // 不允许循环滚动

        startMonthPicker = new CustomDatePicker(this, new CustomDatePicker.ResultHandler() {
            @Override
            public void handle(String time) { // 回调接口，获得选中的时间
                etStartDate.setText(time.substring(0,7).replace("-",""));
            }
        }, "2010-01-01 00:00", now); // 初始化日期格式请用：yyyy-MM-dd HH:mm，否则不能正常运行
        startMonthPicker.hideDate(true); // 不显示时和分
        startMonthPicker.setIsLoop(false); // 不允许循环滚动

        endDatePicker = new CustomDatePicker(this, new CustomDatePicker.ResultHandler() {
            @Override
            public void handle(String time) { // 回调接口，获得选中的时间
                etEndDate.setText(time.substring(0,10).replace("-",""));
            }
        }, "2010-01-01 00:00", now); // 初始化日期格式请用：yyyy-MM-dd HH:mm，否则不能正常运行
        endDatePicker.showSpecificTime(false); // 不显示时和分
        endDatePicker.setIsLoop(false); // 不允许循环滚动

        endMonthPicker = new CustomDatePicker(this, new CustomDatePicker.ResultHandler() {
            @Override
            public void handle(String time) { // 回调接口，获得选中的时间
                etEndDate.setText(time.substring(0,7).replace("-",""));
            }
        }, "2010-01-01 00:00", now); // 初始化日期格式请用：yyyy-MM-dd HH:mm，否则不能正常运行
        endMonthPicker.hideDate(true); // 不显示时和分
        endMonthPicker.setIsLoop(false); // 不允许循环滚动
    }

2. 控件显示,调用show方法显示，注意show方法中的日期格式必须是“YYYY-MM-DD”

@Override
    public void onClick(View v) {
 
        switch (v.getId()) {
            //开始时间
            case R.id.filter_start_date:
                if("day".equals(type))
                {
                    //日期格式必须为“YYYY-MM-DD”
                    startDatePicker.show(SynUtils.getDateFormatStr(etStartDate.getText().toString(),true));
                }
                else if("month".equals(type))
                {
                    startMonthPicker.show(SynUtils.getDateFormatStr(etStartDate.getText().toString(),false));
                }

                break;
}