我在我的应用程序中使用自定义的数字选择器来获取月份和年份作为用户的输入。通过在数字选择器中选择月份,月份值应保存为字符串,年份应保存为整数值。所以我只想从字符串月份名称和整数年份值中获取完整的日期格式。
final Dialog d = new Dialog ( getContext ( ) );
d.setContentView ( R.layout.dialog );
final NumberPicker monthNp = (NumberPicker) d.findViewById ( R.id.monthPicker );
final NumberPicker yearNp = (NumberPicker) d.findViewById ( R.id.yearPicker );
Button okDialog = (Button) d.findViewById ( R.id.ok_dialog );
Button cancelDialog = (Button) d.findViewById ( R.id.cancel_dialog );
monthNp.setMinValue ( 0 );
monthNp.setMaxValue ( monthArray.length - 1 );
monthNp.setDisplayedValues ( monthArray );
monthNp.setWrapSelectorWheel ( false );
monthNp.setValue ( imonth );
monthNp.setOnValueChangedListener ( new NumberPicker.OnValueChangeListener ( ) {
@Override
public void onValueChange ( NumberPicker picker, int oldVal, int newVal ) {
if ( oldVal != 0 ) {
changed = 1;
String getMonthFromNp = monthArray[newVal];
}
}
} );
}
if ( yearNp != null ) {
yearNp.setMinValue ( year - 15 );
yearNp.setMaxValue ( year );
yearNp.setValue ( year );
yearNp.setWrapSelectorWheel ( false );
yearNp.setOnValueChangedListener ( new
NumberPicker.OnValueChangeListener ( ) {
@Override
public void onValueChange ( NumberPicker picker, int oldVal,
int newVal ) {
if ( oldVal != 0 ) {
changed = 1;
int getYearFromNp = yearNp.getValue ( );
}
}
} );
try{
SimpleDateFormat monthFromNP = new SimpleDateFormat ( "MMMM" );
Date month = monthFromNP.parse( getMonthFromNp );
calendar = Calendar.getInstance ( );
calendar.setTime ( month );
calendar.set ( Calendar.YEAR, getYearFromNp );
calendar.set ( Calendar.MONTH, +1 );
calendar.set ( Calendar.DAY_OF_MONTH, 0 );
calendar.set ( Calendar.DATE,
calendar.getActualMinimum ( Calendar.DAY_OF_MONTH ) );
calendar.set ( Calendar.HOUR_OF_DAY, 0 );
calendar.set ( Calendar.MINUTE, 0 );
calendar.set ( Calendar.SECOND, 0 );
calendar.set ( Calendar.MILLISECOND, 0 );
startDate = calendar.getTime ( );
calendar.set ( Calendar.DATE,
calendar.getActualMaximum ( Calendar.DAY_OF_MONTH ) );
calendar.set ( Calendar.HOUR_OF_DAY, 23 );
calendar.set ( Calendar.MINUTE, 59 );
calendar.set ( Calendar.SECOND, 59 );
calendar.set ( Calendar.MILLISECOND, 999 );
endDate = calendar.getTime ( );
}
catch ( ParseException e ) {
e.printStackTrace ( );
}