如何在Android中最小和最大日期相同時設置日期範圍？

我在設置日期範圍從一個arraylist。當最小和最大日期不同時它工作正常。如何在Android中最小和最大日期相同時設置日期範圍？

當兩個日期相同時，問題就出現了。

即使最小和最大日期相同，是否可以以某種方式設置日期範圍？

  //---- Set Date Range------// 
      SimpleDateFormat sDateFormat = new SimpleDateFormat("MM/dd/yyyy"); 
      Date fromDateRange = null ; 
      Date toDateRange = null ; 
      try { 
       fromDateRange = sDateFormat.parse(dateFilters.get(i).getFromDate()); 
       toDateRange = sDateFormat.parse(dateFilters.get(i).getToDate()); 
      } catch (ParseException e) {} 
      fromDateFragment.setDateRange(fromDateRange.getTime(), toDateRange.getTime()); // setDateRange is a custom method of my DatePickerFragment class . 

      //------------------------//

DatePickerFragment.java

package com.example.component; 

import java.util.Calendar; 

import android.app.DatePickerDialog; 
import android.app.Dialog; 
import android.app.DialogFragment; 
import android.content.Context; 
import android.os.Bundle; 
import android.widget.DatePicker; 


public class DatePickerFragment extends DialogFragment implements DatePickerDialog.OnDateSetListener { 
    onDateSet mOnDateSet; 
    DatePickerDialog datePickerDialog; 

    public DatePickerFragment(Context context){ 

     final Calendar c = Calendar.getInstance(); 
     int year = c.get(Calendar.YEAR); 
     int month = c.get(Calendar.MONTH); 
     int day = c.get(Calendar.DAY_OF_MONTH); 
     // Create a new instance of DatePickerDialog and return it 
     datePickerDialog = new DatePickerDialog(context, this, year, month, day); 
    } 

    public DatePickerFragment(){} 

    public void setDateListener(onDateSet mOnDateSet) { 
     this.mOnDateSet = mOnDateSet; 
    } 

    public interface onDateSet { 
     public void onDate(int year, int monthOfYear, 
       int dayOfMonth); 
    } 
    @Override 
    public Dialog onCreateDialog(Bundle savedInstanceState) { 
     // Use the current date as the default date in the picker 

     return datePickerDialog; 
    } 

    public void setDateRange(long minDate, long maxDate){ 
     datePickerDialog.getDatePicker().setMinDate(minDate); 
     datePickerDialog.getDatePicker().setMaxDate(maxDate); 

    } 

    @Override 
    public void onDateSet(DatePicker view, int year, int monthOfYear,int dayOfMonth) { 

     if(view.isShown()){ 
      dismiss(); 
      mOnDateSet.onDate(year, monthOfYear+1, dayOfMonth); 
     } 
    } 

}

logcat的： -

02-25 02:08:04.569: E/AndroidRuntime(8385): FATAL EXCEPTION: main 
02-25 02:08:04.569: E/AndroidRuntime(8385): java.lang.NullPointerException 
02-25 02:08:04.569: E/AndroidRuntime(8385):  at android.widget.CalendarView.onScroll(CalendarView.java:1224) 
02-25 02:08:04.569: E/AndroidRuntime(8385):  at android.widget.CalendarView.access$900(CalendarView.java:76) 
02-25 02:08:04.569: E/AndroidRuntime(8385):  at android.widget.CalendarView$2.onScroll(CalendarView.java:1085) 
02-25 02:08:04.569: E/AndroidRuntime(8385):  at android.widget.AbsListView.invokeOnItemScrollListener(AbsListView.java:1520) 
02-25 02:08:04.569: E/AndroidRuntime(8385):  at android.widget.ListView.layoutChildren(ListView.java:1707) 
02-25 02:08:04.569: E/AndroidRuntime(8385):  at android.widget.AbsListView.onLayout(AbsListView.java:2300) 
02-25 02:08:04.569: E/AndroidRuntime(8385):  at android.view.View.layout(View.java:14067) 
02-25 02:08:04.569: E/AndroidRuntime(8385):  at android.view.ViewGroup.layout(ViewGroup.java:4376) 
02-25 02:08:04.569: E/AndroidRuntime(8385):  at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1655) 
02-25 02:08:04.569: E/AndroidRuntime(8385):  at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1513) 
02-25 02:08:04.569: E/AndroidRuntime(8385):  at android.widget.LinearLayout.onLayout(LinearLayout.java:1426) 
02-25 02:08:04.569: E/AndroidRuntime(8385):  at android.view.View.layout(View.java:14067) 
02-25 02:08:04.569: E/AndroidRuntime(8385):  at android.view.ViewGroup.layout(ViewGroup.java:4376) 
02-25 02:08:04.569: E/AndroidRuntime(8385):  at android.widget.FrameLayout.onLayout(FrameLayout.java:448) 
02-25 02:08:04.569: E/AndroidRuntime(8385):  at android.view.View.layout(View.java:14067) 
02-25 02:08:04.569: E/AndroidRuntime(8385):  at android.view.ViewGroup.layout(ViewGroup.java:4376) 
02-25 02:08:04.569: E/AndroidRuntime(8385):  at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1655) 
02-25 02:08:04.569: E/AndroidRuntime(8385):  at android.widget.LinearLayout.layoutHorizontal(LinearLayout.java:1644) 
02-25 02:08:04.569: E/AndroidRuntime(8385):  at android.widget.LinearLayout.onLayout(LinearLayout.java:1428) 
02-25 02:08:04.569: E/AndroidRuntime(8385):  at android.view.View.layout(View.java:14067) 
02-25 02:08:04.569: E/AndroidRuntime(8385):  at android.view.ViewGroup.layout(ViewGroup.java:4376) 
02-25 02:08:04.569: E/AndroidRuntime(8385):  at android.widget.FrameLayout.onLayout(FrameLayout.java:448) 
02-25 02:08:04.569: E/AndroidRuntime(8385):  at android.view.View.layout(View.java:14067) 
02-25 02:08:04.569: E/AndroidRuntime(8385):  at android.view.ViewGroup.layout(ViewGroup.java:4376) 
02-25 02:08:04.569: E/AndroidRuntime(8385):  at android.widget.FrameLayout.onLayout(FrameLayout.java:448) 
02-25 02:08:04.569: E/AndroidRuntime(8385):  at android.view.View.layout(View.java:14067) 
02-25 02:08:04.569: E/AndroidRuntime(8385):  at android.view.ViewGroup.layout(ViewGroup.java:4376) 
02-25 02:08:04.569: E/AndroidRuntime(8385):  at android.widget.FrameLayout.onLayout(FrameLayout.java:448) 
02-25 02:08:04.569: E/AndroidRuntime(8385):  at android.view.View.layout(View.java:14067) 
02-25 02:08:04.569: E/AndroidRuntime(8385):  at android.view.ViewGroup.layout(ViewGroup.java:4376) 
02-25 02:08:04.569: E/AndroidRuntime(8385):  at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1655) 
02-25 02:08:04.569: E/AndroidRuntime(8385):  at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1513) 
02-25 02:08:04.569: E/AndroidRuntime(8385):  at android.widget.LinearLayout.onLayout(LinearLayout.java:1426) 
02-25 02:08:04.569: E/AndroidRuntime(8385):  at android.view.View.layout(View.java:14067) 
02-25 02:08:04.569: E/AndroidRuntime(8385):  at android.view.ViewGroup.layout(ViewGroup.java:4376) 
02-25 02:08:04.569: E/AndroidRuntime(8385):  at android.widget.FrameLayout.onLayout(FrameLayout.java:448) 
02-25 02:08:04.569: E/AndroidRuntime(8385):  at android.view.View.layout(View.java:14067) 
02-25 02:08:04.569: E/AndroidRuntime(8385):  at android.view.ViewGroup.layout(ViewGroup.java:4376) 
02-25 02:08:04.569: E/AndroidRuntime(8385):  at android.widget.FrameLayout.onLayout(FrameLayout.java:448) 
02-25 02:08:04.569: E/AndroidRuntime(8385):  at android.view.View.layout(View.java:14067) 
02-25 02:08:04.569: E/AndroidRuntime(8385):  at android.view.ViewGroup.layout(ViewGroup.java:4376) 
02-25 02:08:04.569: E/AndroidRuntime(8385):  at android.widget.FrameLayout.onLayout(FrameLayout.java:448) 
02-25 02:08:04.569: E/AndroidRuntime(8385):  at android.view.View.layout(View.java:14067) 
02-25 02:08:04.569: E/AndroidRuntime(8385):  at android.view.ViewGroup.layout(ViewGroup.java:4376) 
02-25 02:08:04.569: E/AndroidRuntime(8385):  at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:1986) 
02-25 02:08:04.569: E/AndroidRuntime(8385):  at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1807) 
02-25 02:08:04.569: E/AndroidRuntime(8385):  at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1107) 
02-25 02:08:04.569: E/AndroidRuntime(8385):  at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:4464) 
02-25 02:08:04.569: E/AndroidRuntime(8385):  at android.view.Choreographer$CallbackRecord.run(Choreographer.java:725) 
02-25 02:08:04.569: E/AndroidRuntime(8385):  at android.view.Choreographer.doCallbacks(Choreographer.java:555) 
02-25 02:08:04.569: E/AndroidRuntime(8385):  at android.view.Choreographer.doFrame(Choreographer.java:525) 
02-25 02:08:04.569: E/AndroidRuntime(8385):  at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:711) 
02-25 02:08:04.569: E/AndroidRuntime(8385):  at android.os.Handler.handleCallback(Handler.java:615) 
02-25 02:08:04.569: E/AndroidRuntime(8385):  at android.os.Handler.dispatchMessage(Handler.java:92) 
02-25 02:08:04.569: E/AndroidRuntime(8385):  at android.os.Looper.loop(Looper.java:137) 
02-25 02:08:04.569: E/AndroidRuntime(8385):  at android.app.ActivityThread.main(ActivityThread.java:4895) 
02-25 02:08:04.569: E/AndroidRuntime(8385):  at java.lang.reflect.Method.invokeNative(Native Method) 
02-25 02:08:04.569: E/AndroidRuntime(8385):  at java.lang.reflect.Method.invoke(Method.java:511) 
02-25 02:08:04.569: E/AndroidRuntime(8385):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:994) 
02-25 02:08:04.569: E/AndroidRuntime(8385):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:761) 
02-25 02:08:04.569: E/AndroidRuntime(8385):  at dalvik.system.NativeStart.main(Native Method)

來源

2014-02-25 Rahul Gupta

顯示您的logcat的錯誤和** ** setDateRange方法 –

嘗試調用這個'fromDateFragment.setDateRange（fromDateRange.getTime（） - 1000， toDateRange.getTime（））;' –

已添加logcat和'setDateRange'方法 –

幾天前，我也面臨着同樣的問題..

我設置最小和最大特定日期的時間和工作正常爲了我。

Calendar mCalendarMax = Calendar.getInstance(); 
// Set your day - month - year here 
mCalendarMax.set(Integer.parseInt(dateMaxData[2]), Integer.parseInt(dateMaxData[1]), Integer.parseInt(dateMaxData[0])); 
mCalendarMax.set(Calendar.HOUR_OF_DAY, mCalendarMax.getMaximum(Calendar.HOUR_OF_DAY)); 
mCalendarMax.set(Calendar.MINUTE, mCalendarMax.getMaximum(Calendar.MINUTE)); 
mCalendarMax.set(Calendar.SECOND, mCalendarMax.getMaximum(Calendar.SECOND)); 
mCalendarMax.set(Calendar.MILLISECOND, mCalendarMax.getMaximum(Calendar.MILLISECOND)); 


Calendar mCalendarTo = Calendar.getInstance(); 
// Set your day - month - year here 
mCalendarTo.set(Integer.parseInt(dateData[2]),Integer.parseInt(dateData[1]),Integer.parseInt(dateData[0])); 

mCalendarTo.set(Calendar.HOUR_OF_DAY, mCalendarTo.getMinimum(Calendar.HOUR_OF_DAY)); 
mCalendarTo.set(Calendar.MINUTE, mCalendarTo.getMinimum(Calendar.MINUTE)); 
mCalendarTo.set(Calendar.SECOND, mCalendarTo.getMinimum(Calendar.SECOND)); 
mCalendarTo.set(Calendar.MILLISECOND, mCalendarTo.getMinimum(Calendar.MILLISECOND));

上述日程表，而不是日期

使用毫秒

fromDateFragment.setDateRange(mCalendarTo.getTimeInMillis(), mCalendarMax.getTimeInMillis());

來源

2014-02-25 07:12:30

無效。如果兩個日期是相同的，它仍然崩潰 –

@RahulGupta但爲什麼你要顯示日期選擇器時，兩個日期是相同的？只是顯示警報對話框而不是日期選擇器 –

這是在我的功能，以顯示日期選擇器的範圍，無論該範圍是一個或100天 –

如何在Android中最小和最大日期相同時設置日期範圍？

回答

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