Wie legt man eine Mindest- und Höchstgrenze für eine Datumsauswahl in Android fest?

Question

Ich arbeite an einer App, in der ich eine benutzerdefinierte Datums- und Uhrzeitauswahl verwenden. Ich habe ein Dialogfeld erstellt, in dem ich die Datums- und Uhrzeitauswahl zeige, und jetzt möchte ich ein minimales und maximales Limit für die Datumsauswahl festlegen. So sollte man das vorherige Datum nicht von heute und nicht mehr als einen Monat voraus wählen können. Dies ist mein Code

AlertDialog.Builder builder = new AlertDialog.Builder(getActivity()); 
      final DatePicker picker = new DatePicker(getActivity()); 
      try { 
       Field f[] = picker.getClass().getDeclaredFields(); 
       for (Field field : f) { 
        if (field.getName().equals("mYearPicker") || field.getName().equals("mYearSpinner")) { 
         field.setAccessible(true); 
         Object yearPicker = new Object(); 
         yearPicker = field.get(picker); 
         ((View) yearPicker).setVisibility(View.GONE); 
        } 
       } 
      } catch (Exception ex) { 
       ex.printStackTrace(); 
      } 
      picker.setCalendarViewShown(false); 
      picker.setMinDate(new Date().getTime()); 

      builder.setTitle("Please select date on which you would be leaving :") 
        .setView(picker) 
        .setPositiveButton("OK", 
          new DialogInterface.OnClickListener() { 
           public void onClick(DialogInterface dialog, int whichButton) { 
            SimpleDateFormat parseFormat = new SimpleDateFormat("EEE dd MMM"); 
            Date date1 = new Date(); 
            date1.setDate(picker.getDayOfMonth()); 
            date1.setMonth(picker.getMonth()); 
            final String s = parseFormat.format(date1); 
            Log.e("DATE", s); 
            SimpleDateFormat sdf=new SimpleDateFormat("MM-dd-yyyy"); 
            Date date2=new Date(); 
            date2.setDate(picker.getDayOfMonth()); 
            date2.setMonth(picker.getMonth()); 
            final String s2=sdf.format(date2); 


            //Time picker 
            AlertDialog.Builder builder = new AlertDialog.Builder(getActivity()); 
            final TimePicker picker = new TimePicker(getActivity()); 
            picker.setIs24HourView(true); 
            builder.setTitle("Please select time at which you would be leaving :") 
              .setView(picker) 
              .setPositiveButton("OK", 
                new DialogInterface.OnClickListener() { 
                 public void onClick(DialogInterface dialog, int whichButton) { 
                  int hour = picker.getCurrentHour(); 
                  int minute = picker.getCurrentMinute(); 
                  leaving.setTextSize(14); 

                  leaving.setText(s + " " + hour + ":" + minute); 
                  inTime=s2+" "+hour+":"+minute; 
                  Log.e("inTime ",inTime); 
                 } 
                }) 
              .setNegativeButton("Cancel", new DialogInterface.OnClickListener() { 
               public void onClick(DialogInterface dialog, int whichButton) { 
                leaving.setText(""); 
                inTime=""; 
                dialog.dismiss(); 
               } 
              }).create().show(); 
            //Time picker 
           } 
          } 
        ) 
        .setNegativeButton("Cancel", 
          new DialogInterface.OnClickListener() { 
           public void onClick(DialogInterface dialog, int whichButton) { 
            leaving.setText(""); 
            inTime=""; 
            dialog.dismiss(); 
           } 
          } 
        ) 
        .create().show(); 

Bitte helfen. Danke

Answer 1

Versuchen Sie dies, Dies zeigt von heute zu nächsten 5 Jahr Datum in Datepicker Dialog.

public class MainActivity extends Activity { 

    TextView txtDatePicker; 
    Calendar cal,cal1; 
    long maxDate; 
    Date date; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 

     cal = Calendar.getInstance(); 
     cal1 = Calendar.getInstance(); 

     txtDatePicker = (TextView) findViewById(R.id.txtDatePicker); 
     txtDatePicker.setOnClickListener(new OnClickListener() { 

      @Override 
      public void onClick(View arg0) { 
       // TODO Auto-generated method stub 
       DatePickerDialog dialog = new DatePickerDialog(MainActivity.this, new OnDateSetListener() { 

        @Override 
        public void onDateSet(DatePicker arg0, int arg1, int arg2, int arg3) { 
         // TODO Auto-generated method stub 
         Toast.makeText(MainActivity.this, ""+arg1+"/"+(arg2+1)+"/"+arg3, Toast.LENGTH_SHORT).show(); 
        } 
      }, cal.get(Calendar.YEAR), cal.get(Calendar.MONTH), cal.get(Calendar.DAY_OF_MONTH)); 
      dialog.getDatePicker().setMinDate(System.currentTimeMillis()); 
      cal1.add(Calendar.YEAR, 5); 
      dialog.getDatePicker().setMaxDate(cal1.getTimeInMillis()); 
      dialog.show(); 
     } 
    }); 
    } 
} 

Answer 2

Verwenden Sie diesen Code.
Ich verwende diesen Code in meiner Anwendung.

// Global declaration 

    Calendar preferDate1 = new GregorianCalendar(); 
    Calendar preferDate2 = new GregorianCalendar(); 
    final Calendar c = Calendar.getInstance(); 
    year = c.get(Calendar.YEAR); 
    month = c.get(Calendar.MONTH); 
    day = c.get(Calendar.DAY_OF_MONTH); 
    private int year, month, day; 


    // here preferredDate1 and preferredDate2 are textview 
    preferredDate1.setOnClickListener(new OnClickListener() { 

       @SuppressLint("NewApi") 
       @Override 
       public void onClick(View v) { 
        DatePickerDialog dp = new DatePickerDialog(MainActivity.this, prefferedDate1Picker, preferDate1 
          .get(Calendar.YEAR), preferDate1.get(Calendar.MONTH), preferDate1.get(Calendar.DAY_OF_MONTH)); 
        dp.getDatePicker().setMinDate(c.getTimeInMillis()); 
        dp.show(); 
       } 
      }); 

    private final DatePickerDialog.OnDateSetListener prefferedDate1Picker = new DatePickerDialog.OnDateSetListener() { 

      @Override 
      public void onDateSet(DatePicker view, int selectedYear, int selectedMonth, int selectedDay) { 
       preferDate1 = new GregorianCalendar(selectedYear, selectedMonth, selectedDay); 
       preferredDate2.setText(""); 
       preferredDate1.setText((selectedDay < 10 ? "0" + String.valueOf(selectedDay) : String.valueOf(selectedDay)) + "/" 
         + (selectedMonth + 1 < 10 ? "0" + String.valueOf((selectedMonth + 1)) : String.valueOf((selectedMonth + 1))) 
         + "/" + selectedYear); 

      } 
     }; 


// This will set date based on preferredDate1 
// change here according to your need. If you want to add or remove one month then set based on data. In this I add one day in second data picker. 
preferredDate2.setOnClickListener(new OnClickListener() { 

      @SuppressLint("NewApi") 
      @Override 
      public void onClick(View v) { 
        DatePickerDialog dp2 = new DatePickerDialog(MainActivity.this, prefferedDate2Picker, preferDate2 
          .get(Calendar.YEAR), preferDate2.get(Calendar.MONTH), preferDate2.get(Calendar.DAY_OF_MONTH)); 

        long mili = preferDate1.getTimeInMillis() + 86400000L; 
        dp2.getDatePicker().setMinDate(mili); 
        dp2.show(); 

      } 
     }); 

     private final DatePickerDialog.OnDateSetListener prefferedDate2Picker = new DatePickerDialog.OnDateSetListener() { 

     @Override 
     public void onDateSet(DatePicker view, int selectedYear, int selectedMonth, int selectedDay) { 
      preferDate2 = new GregorianCalendar(selectedYear, selectedMonth, selectedDay+1); 
      preferredDate2.setText((selectedDay < 10 ? "0" + String.valueOf(selectedDay) : String.valueOf(selectedDay)) + "/" 
        + (selectedMonth + 1 < 10 ? "0" + String.valueOf((selectedMonth + 1)) : String.valueOf((selectedMonth + 1))) 
        + "/" + selectedYear); 

     } 
    };