最多显示当前日期的日期选择对话框（日历）

来来来，既然是对话框，我们肯定的继承对话框，废话不多说，直接上代码

package com.egojit.android.pspsp.app.widget.views;

import android.app.Dialog;
import android.content.Context;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;


import com.egojit.android.pspsp.R;
import com.egojit.android.pspsp.app.widget.adapter.AbstractWheelTextAdapter;

import java.util.ArrayList;
import java.util.Calendar;

/**
 * 日期选择对话框
 * 
 * @author ywl
 *
 */
public class MyDatePickerDialog extends Dialog implements View.OnClickListener {

    private Context context;
    private WheelView wvYear;
    private WheelView wvMonth;
    private WheelView wvDay;

    private View vChangeBirth;
    private View vChangeBirthChild;
    private TextView btnSure;
    private TextView btnCancel;
    private boolean isHasDay=true;//是否有天

    private ArrayList<String> arry_years = new ArrayList<String>();
    private ArrayList<String> arry_months = new ArrayList<String>();
    private ArrayList<String> arry_days = new ArrayList<String>();
    private CalendarTextAdapter mYearAdapter;
    private CalendarTextAdapter mMonthAdapter;
    private CalendarTextAdapter mDaydapter;

    private int month;
    private int day;

    private int currentYear = getYear();
    private int currentMonth = 1;
    private int currentDay = 1;

    private int maxTextSize = 24;
    private int minTextSize = 14;

    private boolean issetdata = false;

    private String selectYear;
    private String selectMonth;
    private String selectDay;

    private OnBirthListener onBirthListener;

    public MyDatePickerDialog(Context context,boolean isHasDay) {
        super(context, R.style.ShareDialog);
        this.context = context;
        this.isHasDay=isHasDay;
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.dialog_myinfo_changebirth);
        wvYear = (WheelView) findViewById(R.id.wv_birth_year);
        wvMonth = (WheelView) findViewById(R.id.wv_birth_month);
        wvDay = (WheelView) findViewById(R.id.wv_birth_day);

        vChangeBirth = findViewById(R.id.ly_myinfo_changebirth);
        vChangeBirthChild = findViewById(R.id.ly_myinfo_changebirth_child);
        btnSure = (TextView) findViewById(R.id.btn_myinfo_sure);
        btnCancel = (TextView) findViewById(R.id.btn_myinfo_cancel);

        vChangeBirth.setOnClickListener(this);
        vChangeBirthChild.setOnClickListener(this);
        btnSure.setOnClickListener(this);
        btnCancel.setOnClickListener(this);

        if (!issetdata) {
            initData();
        }
        initYears();
        mYearAdapter = new CalendarTextAdapter(context, arry_years, setYear(currentYear), maxTextSize, minTextSize);
        wvYear.setVisibleItems(5);
        wvYear.setViewAdapter(mYearAdapter);
        wvYear.setCurrentItem(setYear(currentYear));

        initMonths(month);
        mMonthAdapter = new CalendarTextAdapter(context, arry_months, setMonth(currentMonth), maxTextSize, minTextSize);
        wvMonth.setVisibleItems(5);
        wvMonth.setViewAdapter(mMonthAdapter);
        wvMonth.setCurrentItem(setMonth(currentMonth));

        if(isHasDay){
            initDays(day);
        }else {
            wvDay.setVisibility(View.GONE);
        }



        wvYear.addChangingListener(new OnWheelChangedListener() {

            @Override
            public void onChanged(WheelView wheel, int oldValue, int newValue) {
                // TODO Auto-generated method stub
                String currentText = (String) mYearAdapter.getItemText(wheel.getCurrentItem());
                selectYear = currentText;
                setTextviewSize(currentText, mYearAdapter);
                currentYear = Integer.parseInt(currentText);
                setYear(currentYear);
                initMonths(month);
                mMonthAdapter = new CalendarTextAdapter(context, arry_months, 0, maxTextSize, minTextSize);
                wvMonth.setVisibleItems(5);
                wvMonth.setViewAdapter(mMonthAdapter);
                wvMonth.setCurrentItem(0);
            }
        });

        wvYear.addScrollingListener(new OnWheelScrollListener() {

            @Override
            public void onScrollingStarted(WheelView wheel) {
                // TODO Auto-generated method stub

            }

            @Override
            public void onScrollingFinished(WheelView wheel) {
                // TODO Auto-generated method stub
                String currentText = (String) mYearAdapter.getItemText(wheel.getCurrentItem());
                setTextviewSize(currentText, mYearAdapter);
            }
        });

        wvMonth.addChangingListener(new OnWheelChangedListener() {

            @Override
            public void onChanged(WheelView wheel, int oldValue, int newValue) {
                // TODO Auto-generated method stub
                String currentText = (String) mMonthAdapter.getItemText(wheel.getCurrentItem());
                selectMonth = currentText;
                setTextviewSize(currentText, mMonthAdapter);
                setMonth(Integer.parseInt(currentText));
                if(isHasDay) {
                    initDays(day);
                    mDaydapter = new CalendarTextAdapter(context, arry_days, 0, maxTextSize, minTextSize);
                    wvDay.setVisibleItems(5);
                    wvDay.setViewAdapter(mDaydapter);
                    wvDay.setCurrentItem(0);
                }
            }
        });

        wvMonth.addScrollingListener(new OnWheelScrollListener() {

            @Override
            public void onScrollingStarted(WheelView wheel) {
                // TODO Auto-generated method stub

            }

            @Override
            public void onScrollingFinished(WheelView wheel) {
                // TODO Auto-generated method stub
                String currentText = (String) mMonthAdapter.getItemText(wheel.getCurrentItem());
                setTextviewSize(currentText, mMonthAdapter);
            }
        });



    }

    public void initYears() {
        for (int i = getYear(); i > 1950; i--) {
            arry_years.add(i + "");
        }
    }

    public void initMonths(int months) {
        arry_months.clear();
        for (int i = 1; i <= months; i++) {
            arry_months.add(i + "");
        }
    }

    public void initDays(int days) {
        arry_days.clear();
        wvDay.setVisibility(View.VISIBLE);
        for (int i = 1; i <= days; i++) {
            arry_days.add(i + "");

        }
        mDaydapter = new CalendarTextAdapter(context, arry_days, currentDay - 1, maxTextSize, minTextSize);

        wvDay.setVisibleItems(5);
        wvDay.setViewAdapter(mDaydapter);
        wvDay.setCurrentItem(currentDay - 1);
        wvDay.addChangingListener(new OnWheelChangedListener() {

            @Override
            public void onChanged(WheelView wheel, int oldValue, int newValue) {
                // TODO Auto-generated method stub
                String currentText = (String) mDaydapter.getItemText(wheel.getCurrentItem());
                setTextviewSize(currentText, mDaydapter);
                selectDay = currentText;
            }
        });

        wvDay.addScrollingListener(new OnWheelScrollListener() {

            @Override
            public void onScrollingStarted(WheelView wheel) {
                // TODO Auto-generated method stub

            }

            @Override
            public void onScrollingFinished(WheelView wheel) {
                // TODO Auto-generated method stub
                String currentText = (String) mDaydapter.getItemText(wheel.getCurrentItem());
                setTextviewSize(currentText, mDaydapter);
            }
        });
    }

    private class CalendarTextAdapter extends AbstractWheelTextAdapter {
        ArrayList<String> list;

        protected CalendarTextAdapter(Context context, ArrayList<String> list, int currentItem, int maxsize, int minsize) {
            super(context, R.layout.item_birth_year, NO_RESOURCE, currentItem, maxsize, minsize);
            this.list = list;
            setItemTextResource(R.id.tempValue);
        }

        @Override
        public View getItem(int index, View cachedView, ViewGroup parent) {
            View view = super.getItem(index, cachedView, parent);
            return view;
        }

        @Override
        public int getItemsCount() {
            return list.size();
        }

        @Override
        protected CharSequence getItemText(int index) {
            return list.get(index) + "";
        }
    }

    public void setBirthdayListener(OnBirthListener onBirthListener) {
        this.onBirthListener = onBirthListener;
    }

    @Override
    public void onClick(View v) {

        if (v == btnSure) {
            if (onBirthListener != null) {
                onBirthListener.onClick(selectYear, selectMonth, selectDay);
            }
        } else if (v == btnSure) {

        } else if (v == vChangeBirthChild) {
            return;
        } else {
            dismiss();
        }
        dismiss();

    }

    public interface OnBirthListener {
        public void onClick(String year, String month, String day);
    }

    /**
     * 设置字体大小
     * 
     * @param curriteItemText
     * @param adapter
     */
    public void setTextviewSize(String curriteItemText, CalendarTextAdapter adapter) {
        ArrayList<View> arrayList = adapter.getTestViews();
        int size = arrayList.size();
        String currentText;
        for (int i = 0; i < size; i++) {
            TextView textvew = (TextView) arrayList.get(i);
            currentText = textvew.getText().toString();
            if (curriteItemText.equals(currentText)) {
                textvew.setTextSize(maxTextSize);
            } else {
                textvew.setTextSize(minTextSize);
            }
        }
    }

    public int getYear() {
        Calendar c = Calendar.getInstance();
        return c.get(Calendar.YEAR);
    }

    public int getMonth() {
        Calendar c = Calendar.getInstance();
        return c.get(Calendar.MONTH) + 1;
    }

    public int getDay() {
        Calendar c = Calendar.getInstance();
        return c.get(Calendar.DATE);
    }

    public void initData() {
        setDate(getYear(), getMonth(), getDay());
        this.currentDay = 1;
        this.currentMonth = 1;
    }

    /**
     * 设置年月日
     * 
     * @param year
     * @param month
     * @param day
     */
    public void setDate(int year, int month, int day) {
        selectYear = year + "";
        selectMonth = month + "";
        selectDay = day + "";
        issetdata = true;
        this.currentYear = year;
        this.currentMonth = month;
        this.currentDay = day;
        if (year == getYear()) {
            this.month = getMonth();
        } else {
            this.month = 12;
        }
        calDays(year, month);
    }

    /**
     * 设置年份
     * 
     * @param year
     */
    public int setYear(int year) {
        int yearIndex = 0;
        if (year != getYear()) {
            this.month = 12;
        } else {
            this.month = getMonth();
        }
        for (int i = getYear(); i > 1950; i--) {
            if (i == year) {
                return yearIndex;
            }
            yearIndex++;
        }
        return yearIndex;
    }

    /**
     * 设置月份
     * @param month
     * @return
     */
    public int setMonth(int month) {
        int monthIndex = 0;
        calDays(currentYear, month);
        for (int i = 1; i < this.month; i++) {
            if (month == i) {
                return monthIndex;
            } else {
                monthIndex++;
            }
        }
        return monthIndex;
    }

    /**
     * 计算每月多少天
     * 
     * @param month
     * @param year
     */
    public void calDays(int year, int month) {
        boolean leayyear = false;
        if (year % 4 == 0 && year % 100 != 0) {
            leayyear = true;
        } else {
            leayyear = false;
        }
        for (int i = 1; i <= 12; i++) {
            switch (month) {
            case 1:
            case 3:
            case 5:
            case 7:
            case 8:
            case 10:
            case 12:
                this.day = 31;
                break;
            case 2:
                if (leayyear) {
                    this.day = 29;
                } else {
                    this.day = 28;
                }
                break;
            case 4:
            case 6:
            case 9:
            case 11:
                this.day = 30;
                break;
            }
        }
        if (year == getYear() && month == getMonth()) {
            this.day = getDay();
        }
    }
}

接下来，把 布局文件都展现给大家了

dialog_myinfo_changebirth

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/ly_myinfo_changebirth"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#00000000"
    android:gravity="center"
    android:orientation="vertical" >

    <LinearLayout
        android:id="@+id/ly_myinfo_changebirth_child"
        android:layout_width="300dip"
        android:layout_height="wrap_content"
        android:layout_marginLeft="27dip"
        android:layout_marginRight="27dip"
        android:background="@drawable/bg_dialog_selector"
        android:orientation="vertical" >

        <TextView
            android:id="@+id/tv_share_title"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginBottom="14dip"
            android:layout_marginLeft="18dip"
            android:layout_marginTop="18dip"
            android:gravity="center_vertical"
            android:text="选择日期"
            android:textColor="#000000"
            android:textSize="18sp" />
        <LinearLayout 
            android:layout_width="match_parent"
            android:layout_height="160dip"
            android:orientation="horizontal"
            android:layout_marginLeft="20dip"
            android:layout_marginRight="20dip"
            android:gravity="center_vertical">
            <com.egojit.android.pspsp.app.widget.views.WheelView
                android:id="@+id/wv_birth_year"
                android:layout_width="0dip"
                android:layout_weight="1"
                android:layout_height="match_parent"
                android:layout_gravity="center_vertical"
                />
            <com.egojit.android.pspsp.app.widget.views.WheelView
                android:id="@+id/wv_birth_month"
                android:layout_width="0dip"
                android:layout_weight="1"
                android:layout_height="match_parent"
                android:layout_gravity="center_vertical"
                />
            <com.egojit.android.pspsp.app.widget.views.WheelView
                android:id="@+id/wv_birth_day"
                android:layout_width="0dip"
                android:layout_weight="1"
                android:layout_height="match_parent"
                android:layout_gravity="center_vertical"
                />
        </LinearLayout>
        <RelativeLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="25dip"
            android:layout_marginBottom="21dip">

                <TextView
                    android:id="@+id/btn_myinfo_sure"
                    android:layout_width="77dip"
                    android:layout_height="33dip"
                    android:layout_alignParentRight="true"
                    android:layout_marginRight="15dip"
                    android:text="确认"
                    android:gravity="center"
                    android:textSize="16sp"
                    android:textColor="#333333"/>


                <TextView
                    android:id="@+id/btn_myinfo_cancel"
                    android:layout_width="77dip"
                    android:layout_height="33dip"
                    android:layout_toLeftOf="@+id/btn_myinfo_sure"
                    android:text="取消"
                    android:gravity="center"
                    android:textSize="16sp"
                    android:textColor="#333333"/>
        </RelativeLayout>
    </LinearLayout>

</LinearLayout>

item_birth_year

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="35dip"
    android:orientation="horizontal"
    android:gravity="center"
    >
    
    <TextView 
        android:id="@+id/tempValue"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:gravity="center"
        android:textColor="#000000"
        />
    
</LinearLayout>

R.style.ShareDialog

<!-- 分享对话框样式 -->
    <style name="ShareDialog" parent="@android:Theme.Dialog">
        <item name="android:windowBackground">@android:color/transparent</item>
        <item name="android:windowFrame">@null</item>
        <item name="android:windowNoTitle">true</item>
        <item name="android:windowIsFloating">false</item>
        <item name="android:windowIsTranslucent">true</item>
        <item name="android:windowContentOverlay">@null</item>
        <item name="android:backgroundDimEnabled">true</item>
    </style>

最后看看怎么使用的吧

 @Event(R.id.findtime)
    private void onFindTime(View view) {
        MyDatePickerDialog mDialog = new MyDatePickerDialog(this, true);
        String sTime = findTime.getText().toString();
        if (StringUtils.isEmpty(sTime)) {
            Calendar mCalendar = Calendar.getInstance();
            y = mCalendar.get(Calendar.YEAR);
            m = mCalendar.get(Calendar.MONTH) + 1;
            d = mCalendar.get(Calendar.DAY_OF_MONTH);
        }
        mDialog.setDate(y, m, d);
        mDialog.show();
        mDialog.setBirthdayListener(new MyDatePickerDialog.OnBirthListener() {
            @Override
            public void onClick(String year, String month, String day) {
                //清空当前时间
                y = Integer.parseInt(year);
                m = Integer.parseInt(month);
                d = Integer.parseInt(day);
                findTime.setText(year + "-" + month + "-" + day);
            }
        });
    }

效果展示

最大时间就是当前时间