DatePickerDialog error: Фрагмент уже добавлен

Question

Проблемы с моей datePickerDialog. Используя EditText для сборщиков, и когда я пытаюсь щелкнуть/дважды щелкнуть на сборщике, это дает мне ошибку. Как предотвратить эту ошибку

java.lang.IllegalStateException: Fragment already added: DatePickerDialog {4a9aadf4 #0 datePickerDialog1} 
    at android.support.v4.app.FragmentManagerImpl.addFragment(FragmentManager.java:1361) 
    at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:734) 
    at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1677) 
    at android.support.v4.app.FragmentManagerImpl$1.run(FragmentManager.java:536) 
    at android.os.Handler.handleCallback(Handler.java:733) 
    at android.os.Handler.dispatchMessage(Handler.java:95) 
    at android.os.Looper.loop(Looper.java:136) 
    at android.app.ActivityThread.main(ActivityThread.java:5045) 
    at java.lang.reflect.Method.invokeNative(Native Method) 
    at java.lang.reflect.Method.invoke(Method.java:515) 
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779) 
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595) 
    at dalvik.system.NativeStart.main(Native Method) 

Я попытался добавить datePickerDialog1.isAdded() на код, но его до сих пор не работает

Это мой код ниже datePickerDialog

date1 = (EditText) findViewById(R.id.date1); 
date2 = (EditText) findViewById(R.id.date2); 

datePickerDialog1 = com.fourmob.datetimepicker.date.DatePickerDialog.newInstance(this, calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH), calendar.get(Calendar.DAY_OF_MONTH)); 
datePickerDialog2 = com.fourmob.datetimepicker.date.DatePickerDialog.newInstance(this, calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH), calendar.get(Calendar.DAY_OF_MONTH)); 

date1.setOnClickListener(new View.OnClickListener() { 

    @Override 
    public void onClick(View v) { 
     datePickerDialog1.setYearRange(1910, 2037); 
     datePickerDialog1.show(getSupportFragmentManager(), DATE_PICKER_1); 
     datePickerDialog1.setOnDateSetListener(new DatePickerDialog.OnDateSetListener() { 

     @Override 
     public void onDateSet(DatePickerDialog datePickerDialog, int year, int month, int day) { 
       date1.setText(" " + month + " " + day + " " + year); 
       } 
       }); 
      } 
     }); 

date2.setOnClickListener(new View.OnClickListener() { 

    @Override 
    public void onClick(View v) { 
     datePickerDialog2.setYearRange(1910, 2037); 
     datePickerDialog2.show(getSupportFragmentManager(), DATE_PICKER_2); 
     datePickerDialog2.setOnDateSetListener(new DatePickerDialog.OnDateSetListener() { 

     @Override 
     public void onDateSet(DatePickerDialog datePickerDialog, int year, int month, int day) { 
       date2.setText(" " + month + " " + day + " " + year); 
        } 
       }); 
      } 
      });   

if(savedInstanceState != null) { 
    DatePickerDialog datePickerDialog1= (DatePickerDialog) getSupportFragmentManager().findFragmentByTag(DATE_PICKER_1); 
    if(datePickerDialog1!= null || datePickerDialog1.isAdded()) { 
     datePickerDialog1.setOnDateSetListener(this); 
    } 

    DatePickerDialog datePickerDialog2 = (DatePickerDialog) getSupportFragmentManager().findFragmentByTag(DATE_PICKER_2); 
    if(datePickerDialog2 != null || datePickerDialog2.isAdded()) { 
     datePickerDialog2 .setOnDateSetListener(this); 
    } 
} 

Answer 1

перед тем OnCreate объявить DatePickerDialog

DatePickerDialog datePickerDialog1; 
DatePickerDialog datePickerDialog2; 

затем

date1 = (EditText) findViewById(R.id.date1); 
    date2 = (EditText) findViewById(R.id.date2); 

    datePickerDialog1 = com.fourmob.datetimepicker.date.DatePickerDialog.newInstance(this, calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH), calendar.get(Calendar.DAY_OF_MONTH)); 
    datePickerDialog2 = com.fourmob.datetimepicker.date.DatePickerDialog.newInstance(this, calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH), calendar.get(Calendar.DAY_OF_MONTH)); 

    date1.setOnClickListener(new View.OnClickListener() { 

     @Override 
     public void onClick(View v) { 
       datePickerDialog1.setYearRange(1910, 2037); 
       datePickerDialog1.show(getSupportFragmentManager(), DATE_PICKER_1); 
       datePickerDialog1.setOnDateSetListener(new DatePickerDialog.OnDateSetListener() { 

        @Override 
        public void onDateSet(DatePickerDialog datePickerDialog, int year, int month, int day) { 
         date1.setText(" " + month + " " + day + " " + year); 
        } 
       }); 
      } 
     }); 

    date2.setOnClickListener(new View.OnClickListener() { 

     @Override 
     public void onClick(View v) { 
       datePickerDialog2.setYearRange(1910, 2037); 
       datePickerDialog2.show(getSupportFragmentManager(), DATE_PICKER_2); 
       datePickerDialog2.setOnDateSetListener(new DatePickerDialog.OnDateSetListener() { 

        @Override 
        public void onDateSet(DatePickerDialog datePickerDialog, int year, int month, int day) { 
         date2.setText(" " + month + " " + day + " " + year); 
        } 
       }); 
      } 
     }); 


      if(savedInstanceState != null) { 

         if(datePickerDialog1!= null || datePickerDialog1.isAdded()) { 
          datePickerDialog1.setOnDateSetListener(this); 
         } 


         if(datePickerDialog2 != null || datePickerDialog2 .isAdded()) { 
          datePickerDialog2 .setOnDateSetListener(this); 
         } 
       }