前言
需求要只显示月和日的日历控件,又不想自定义控件,最简单的办法就是隐藏显示年的这个框了,但DatePickerDialog并没有直接提供方法来操作,这里分享一个笨办法:)
声明
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正文
一、效果图
1.1 默认
1.2 处理后
二、实现代码
2.1 代码片段1
/**
* 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 ;
* 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 ;
}
代码说明:
通过断点也看到Dialog的ContentView里有DatePicker子控件,这里通过遍历的办法来查找这个控件。
通过断点也看到Dialog的ContentView里有DatePicker子控件,这里通过遍历的办法来查找这个控件。
2.2 使用代码
final
Calendar cal
=
Calendar.getInstance();
mDialog = new CustomerDatePickerDialog(getContext(), this ,
cal.get(Calendar.YEAR), cal.get(Calendar.MONTH),
cal.get(Calendar.DAY_OF_MONTH));
mDialog.show();
DatePicker dp = findDatePicker((ViewGroup) mDialog.getWindow().getDecorView());
if (dp != null ) {
((ViewGroup) dp.getChildAt( 0 )).getChildAt( 0 ).setVisibility(View.GONE);
mDialog = new CustomerDatePickerDialog(getContext(), this ,
cal.get(Calendar.YEAR), cal.get(Calendar.MONTH),
cal.get(Calendar.DAY_OF_MONTH));
mDialog.show();
DatePicker dp = findDatePicker((ViewGroup) mDialog.getWindow().getDecorView());
if (dp != null ) {
((ViewGroup) dp.getChildAt( 0 )).getChildAt( 0 ).setVisibility(View.GONE);
}
代码说明:
通过源码可以看得到DatePicker内置三个NumberPicker控件,依次表示年、月、日,隐藏掉第一个即可。
三、补充
后续使用中发现标题栏也要改,通过查看DatePickerDialog源码,需要自定义并实现onDateChanged方法才可实现,如下代码:
class
CustomerDatePickerDialog
extends
DatePickerDialog {
public CustomerDatePickerDialog(Context context,
OnDateSetListener callBack, int year, int monthOfYear,
int dayOfMonth) {
super (context, callBack, year, monthOfYear, dayOfMonth);
}
@Override
public void onDateChanged(DatePicker view, int year, int month, int day) {
super .onDateChanged(view, year, month, day);
mDialog.setTitle((month + 1 ) + " 月 " + day + " 日 " );
}
}
public CustomerDatePickerDialog(Context context,
OnDateSetListener callBack, int year, int monthOfYear,
int dayOfMonth) {
super (context, callBack, year, monthOfYear, dayOfMonth);
}
@Override
public void onDateChanged(DatePicker view, int year, int month, int day) {
super .onDateChanged(view, year, month, day);
mDialog.setTitle((month + 1 ) + " 月 " + day + " 日 " );
}
}