只显示月和年的DatePickerDialog
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?? 需求要只显示月和年的日历控件,又不想自定义控件,最简单的办法就是隐藏显示日的这个框了,但DatePickerDialog并没有直接提供方法来操作,网上搜了下,并没有找到合适的解决方案。
?? 农民伯伯的这篇文章:http://www.cnblogs.com/over140/archive/2011/09/20/2181532.html,虽然可以实现,但是当手机不同时此方法就不行。
?? 首先想自定义一个控件,但是太麻烦,看了下2.2的DatePicker中用到了NumberPicker,但是这个NumberPicker在3.0以下是个隐藏控件没法用。因而重写DatePicker来实现自定义太过麻烦了。
?? 有没更好的方法呢?看了下农民伯伯那篇博客发现只要隐藏“年”这个NumberPicker就可以了,可是用
((ViewGroup) dp.getChildAt(0)).getChildAt(0).setVisibility(View.GONE);
?一旦换个手机,或者切换语言时,就会发现年所在的位置会发生变化,因此次方法并不可取,那么如果我能够直接获取“年”的NumberPicker,然后隐藏不就可以了,搜了下,发现利用java的反射可以达到此目的
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Class c=dp.getClass(); Field f;try {f = c.getDeclaredField("mDayPicker" );f.setAccessible(true ); LinearLayout l= (LinearLayout)f.get(dp); l.setVisibility(View.GONE);} catch (SecurityException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (NoSuchFieldException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (IllegalArgumentException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (IllegalAccessException e) {// TODO Auto-generated catch blocke.printStackTrace();} ?这样就避免了手机适配的问题了。
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自定义的DatePickerDialog完整代码
/** * */package com.small.shopkeeper.view;import java.lang.reflect.Field;import android.app.DatePickerDialog;import android.content.Context;import android.view.View;import android.view.ViewGroup;import android.widget.DatePicker;import android.widget.LinearLayout;/** * @author liujun * 自定义的日期控件,只有年和月,没有日 * 2012-10-17 上午11:02:17 */public class YMPickerDialog extends DatePickerDialog { public YMPickerDialog(Context context, OnDateSetListener callBack, int year, int monthOfYear) { super(context, callBack, year, monthOfYear, 3); this.setTitle(year+"年"+(monthOfYear + 1) + "月" ); } @Override public void onDateChanged(DatePicker view, int year, int month, int day) { super.onDateChanged(view, year, month, day); this.setTitle(year+"年"+(month + 1) + "月" ); }/* (non-Javadoc) * @see android.app.DatePickerDialog#show() */@Overridepublic void show() {// TODO Auto-generated method stubsuper.show(); DatePicker dp = findDatePicker((ViewGroup) this.getWindow().getDecorView()); if (dp != null) { Class c=dp.getClass(); Field f;try {f = c.getDeclaredField("mDayPicker" );f.setAccessible(true ); LinearLayout l= (LinearLayout)f.get(dp); l.setVisibility(View.GONE);} catch (SecurityException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (NoSuchFieldException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (IllegalArgumentException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (IllegalAccessException e) {// TODO Auto-generated catch blocke.printStackTrace();} } }/** * 从当前Dialog中查找DatePicker子控件 * * @param group * @return */ private DatePicker findDatePicker(ViewGroup group) { if (group != null) { for (int i = 0, j = group.getChildCount(); i < j; i++) { View child = group.getChildAt(i); if (child instanceof DatePicker) { return (DatePicker) child; } else if (child instanceof ViewGroup) { DatePicker result = findDatePicker((ViewGroup) child); if (result != null) return result; } } } return null; } }?
本文参考:http://www.cnblogs.com/over140/archive/2011/09/20/2181532.html
?????????????? http://www.189works.com/article-31463-1.html
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