Android 自定义滑动选择的日期控件

由于Android系统自带的日期控件设计不是很友好，于是网上找了些资料，也自定义了一个日期控件。

效果图如下：



废话不说，直接上代码：

布局文件：wheel_calendar.xml

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_height="fill_parent"
android:layout_width="fill_parent"
android:layout_marginTop="12dp"
android:background="#FFFFFF"
android:orientation="vertical">

<LinearLayout
android:layout_height="wrap_content"
android:layout_width="fill_parent"
android:orientation="horizontal">

<TextView
android:id="@+id/txt_date"
android:layout_height="wrap_content"
android:layout_width="fill_parent"
android:gravity="center"
android:text="年"
android:textColor="#000000"
android:textSize="20dip"/>
</LinearLayout>

<LinearLayout
android:layout_height="wrap_content"
android:layout_width="fill_parent"
android:orientation="horizontal">

<TextView
android:layout_height="wrap_content"
android:layout_width="fill_parent"
android:layout_weight="1"
android:gravity="center"
android:text="年"
android:textColor="#000000"
android:textSize="20dip"/>
<TextView
android:layout_height="wrap_content"
android:layout_width="fill_parent"
android:layout_weight="1"
android:gravity="center"
android:text="月"
android:textColor="#000000"
android:textSize="20dip"/>
<TextView
android:layout_height="wrap_content"
android:layout_width="fill_parent"
android:layout_weight="1"
android:gravity="center"
android:text="日"
android:textColor="#000000"
android:textSize="20dip"/>
</LinearLayout>

<LinearLayout
android:layout_height="wrap_content"
android:layout_width="fill_parent"
android:orientation="horizontal">

<com.wheel.widget.WheelView android:id="@+id/year"
android:layout_height="wrap_content"
android:layout_width="fill_parent"
android:layout_weight="1"/>
<com.wheel.widget.WheelView android:id="@+id/month"
android:layout_height="wrap_content"
android:layout_width="fill_parent"
android:layout_weight="1"/>
<com.wheel.widget.WheelView android:id="@+id/day"
android:layout_height="wrap_content"
android:layout_width="fill_parent"
android:layout_weight="1"/>
</LinearLayout>
</LinearLayout>

java类WheelCalendarActivity.java：

package com.example.demo;

import java.util.Calendar;

import com.wheel.widget.OnWheelChangedListener;
import com.wheel.widget.WheelView;
import com.wheel.widget.adapter.NumericWheelAdapter;

import android.content.Context;
import android.graphics.Typeface;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
/**
* @author star kong
* */
public class WheelCalendarActivity extends BaseActivity{

WheelView year,month,day;
int minYear = 1970;  //最小年份
int fontSize = 20; 	 //字体大小
TextView txt_date;

int mYear=0,mMonth = 0,mDay = 0;
String _week = "";

@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.wheel_calendar);
initView();
}

private void initView(){
txt_date = (TextView)findViewById(R.id.txt_date);

Calendar calendar = Calendar.getInstance();

mYear =calendar.get(Calendar.YEAR);
mMonth = calendar.get(Calendar.MONTH)+1;
mDay  = calendar.get(Calendar.DAY_OF_MONTH);
getWeek(calendar.get(Calendar.DAY_OF_WEEK));

month = (WheelView) findViewById(R.id.month);
year = (WheelView) findViewById(R.id.year);
day = (WheelView) findViewById(R.id.day);

setShowDate();

// month
int curMonth = calendar.get(Calendar.MONTH);
month.setViewAdapter(new DateNumericAdapter(this, 1, 12, curMonth));
month.setCurrentItem(curMonth);
month.addChangingListener(listener);
month.setCyclic(true);

// year
int curYear = calendar.get(Calendar.YEAR);
year.setViewAdapter(new DateNumericAdapter(this, minYear, curYear, curYear-minYear));
year.setCurrentItem(curYear-minYear);
year.addChangingListener(listener);
year.setCyclic(true);

//day
day.setCyclic(true);
updateDays(year, month, day);
day.setCurrentItem(calendar.get(Calendar.DAY_OF_MONTH)-1);
day.addChangingListener(listener);
}

/**
* Updates day wheel. Sets max days according to selected month and year
*/
void updateDays(WheelView year, WheelView month, WheelView day) {
Calendar calendar = Calendar.getInstance();
calendar.set(Calendar.YEAR, minYear + year.getCurrentItem());
calendar.set(Calendar.MONTH, month.getCurrentItem());

int maxDays = calendar.getActualMaximum(Calendar.DAY_OF_MONTH);
day.setViewAdapter(new DateNumericAdapter(this, 1, maxDays, calendar.get(Calendar.DAY_OF_MONTH) - 1));
int curDay = Math.min(maxDays, day.getCurrentItem() + 1);
day.setCurrentItem(curDay - 1, true);

mYear = minYear+year.getCurrentItem();
mMonth = month.getCurrentItem()+1;
mDay = curDay;
calendar.set(Calendar.DAY_OF_MONTH, mDay);
getWeek(calendar.get(Calendar.DAY_OF_WEEK));

}

private void setShowDate(){
txt_date.setText(mYear+"-"+mMonth+"-"+mDay+"   星期"+_week);
}

/**
* 获取星期几
* */
private void getWeek(int week){
switch(week){
case 1:
_week = "天";
break;
case 2:
_week = "一";
break;
case 3:
_week = "二";
break;
case 4:
_week = "三";
break;
case 5:
_week = "四";
break;
case 6:
_week = "五";
break;
case 7:
_week = "六";
break;
}
}

OnWheelChangedListener listener = new OnWheelChangedListener() {
public void onChanged(WheelView wheel, int oldValue, int newValue) {
updateDays(year, month, day);
setShowDate();
}
};

/**
* Adapter for numeric wheels. Highlights the current value.
*/
private class DateNumericAdapter extends NumericWheelAdapter {
// Index of current item
int currentItem;
// Index of item to be highlighted
int currentValue;

/**
* Constructor
*/
public DateNumericAdapter(Context context, int minValue, int maxValue, int current) {
super(context, minValue, maxValue);
this.currentValue = current;
setTextSize(fontSize);
}

@Override
protected void configureTextView(TextView view) {
super.configureTextView(view);
if (currentItem == currentValue) {
view.setTextColor(0xFF0000F0);
}
view.setTypeface(Typeface.SANS_SERIF);
}

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

}

类中有使用第三方代码，均为外国高人编写，由于代码较多，我已导出为jar文件在我资源中可以下载。
http://download.csdn.net/detail/kongxingxing/5886089
点击打开链接