Die Validierung "von Datum" und "bis Datum" in android

Ich eine Anwendung in dem Benutzer die Wahl hat zwei Termine, nämlich- von Datum und bisher.Sowohl die Felder sollten nicht akzeptieren, jedes Datum kleiner als das aktuelle Datum ein.Ich habe durch einige Beiträge auf dieser website und erreicht wird diese Funktionalität durch die Verwendung von einfachen Datumsauswahl-dialog und einzelne ondatesetListener.

mein problem ist, dass ich nicht in der Lage bin zu überprüfen, die Bedingung, dass bisher sollte immer größer oder gleich von Datum.bitte helfen Sie mir.Ich bin nicht in der Lage zu erfassen, die von Datum als aktive Datum ist diesen durch die aktive end-Datum vielen Dank im Voraus.Im folgenden ist der code:

public class Leave_form extends Activity 
{       
    private static EditText tvDislpayResult;
    private Button startPickDate;
    private Button endPickDate;
    private Calendar startDate;
    private Calendar endDate;
    //private EditText startDateDisplay;
    //private EditText endDateDisplay;
    static final int DATE_DIALOG_ID = 0;
    private TextView startDateDisplay;
    private TextView endDateDisplay;
    private TextView activeDateDisplay;
    private Calendar activeDate;
    private Calendar currentDate;
    private Calendar fromDate;

    protected void onCreate(Bundle savedInstanceState) 
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_leave_form);

        /*  capture our View elements for the start date function   */
        startDateDisplay = (EditText) findViewById(R.id.e_from_date);
        startPickDate = (Button) findViewById(R.id.Set_date1);

        /*get tday date  */   

        currentDate=Calendar.getInstance();
        Log.d("currentDate ",""+(currentDate.get(Calendar.DAY_OF_MONTH))+(currentDate.get(Calendar.MONTH)+1)+(currentDate.get(Calendar.YEAR)));

        /* get the current date */
        startDate = Calendar.getInstance();
        Log.d("startdate ",""+(startDate.get(Calendar.DAY_OF_MONTH))+(startDate.get(Calendar.MONTH)+1)+(startDate.get(Calendar.YEAR)));

        /* add a click listener to the button   */
        startPickDate.setOnClickListener(new View.OnClickListener()
        {
            public void onClick(View v) 
            {
                showDateDialog(startDateDisplay, startDate);
                Log.d("startDate-on click ",""+(startDate.get(Calendar.DAY_OF_MONTH))+(startDate.get(Calendar.MONTH)+1)+(startDate.get(Calendar.YEAR)));

            }
        });

        /* capture our View elements for the end date function */
        endDateDisplay = (EditText) findViewById(R.id.e_to_date);
        endPickDate = (Button) findViewById(R.id.Set_date2);

        /* get the current date */
        endDate = Calendar.getInstance();
        Log.d("endDate ",""+(endDate.get(Calendar.DAY_OF_MONTH))+(endDate.get(Calendar.MONTH)+1)+(endDate.get(Calendar.YEAR)));

        /* add a click listener to the button   */
        endPickDate.setOnClickListener(new View.OnClickListener()
        {
            public void onClick(View v)
            {
                showDateDialog(endDateDisplay, endDate);
                Log.d("endDate -on click",""+(endDate.get(Calendar.DAY_OF_MONTH))+(endDate.get(Calendar.MONTH)+1)+(endDate.get(Calendar.YEAR)));
            }
        });

        /* display the current date (this method is below)  */
       //updateDisplay(startDateDisplay, startDate);
       //updateDisplay(endDateDisplay, endDate);
    }

    private void updateDisplay(TextView dateDisplay, Calendar date) 
    {
        dateDisplay.setText(
                new StringBuilder()
                    //Month is 0 based so add 1
                    .append(date.get(Calendar.DAY_OF_MONTH) ).append("-")
                    .append(date.get(Calendar.MONTH)+1).append("-")
                    .append(date.get(Calendar.YEAR)).append(" "));

        Log.d("msg","date:"+(date.get(Calendar.DAY_OF_MONTH))+(date.get(Calendar.MONTH)+1)+(date.get(Calendar.YEAR)));

        fromDate=date;
    }

    public void showDateDialog(TextView dateDisplay, Calendar date)
    {
        Log.d("SDD", dateDisplay.getText().toString());
        Log.d("startdate ",""+(currentDate.get(Calendar.DAY_OF_MONTH))+(currentDate.get(Calendar.MONTH)+1)+(currentDate.get(Calendar.YEAR)));
       activeDateDisplay = dateDisplay;
        activeDate = date;
        showDialog(DATE_DIALOG_ID);
    }

    private OnDateSetListener dateSetListener = new OnDateSetListener()
    {
        @SuppressWarnings("deprecation")
        @Override
        public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) {
            activeDate.set(Calendar.YEAR, year);
            activeDate.set(Calendar.MONTH, monthOfYear);
            activeDate.set(Calendar.DAY_OF_MONTH, dayOfMonth);
            Log.d("activeDate-on dateset ",""+(activeDate.get(Calendar.DAY_OF_MONTH))+(activeDate.get(Calendar.MONTH)+1)+(activeDate.get(Calendar.YEAR)));

            if(currentDate.after(activeDate)|(currentDate.equals(activeDate)))
            {
                Toast toast=Toast.makeText(Leave_form.this, "Please select a valid date", Toast.LENGTH_LONG);
                toast.setGravity(Gravity.CENTER, 0, 0);
                toast.show();


            }
            else
            {
                if((currentDate.after(activeDate)|(currentDate.equals(activeDate)))&&(startDateDisplay.getText().toString()!=null))
                {
                    Log.d("startDate-on click ",""+(startDate.get(Calendar.DAY_OF_MONTH))+(startDate.get(Calendar.MONTH)+1)+(startDate.get(Calendar.YEAR)));
                    if(startDate.before(activeDate))
                    {
                        updateDisplay(activeDateDisplay, activeDate);
                    }

                    else
                    {
                        Toast.makeText(getApplicationContext(), "enter valid date", Toast.LENGTH_SHORT).show();
                        /*AlertDialog alertDialog=new AlertDialog.Builder(Leave_form.this).create();

                        alertDialog.setMessage("Choose a valid date");

                        alertDialog.setButton("OK", new DialogInterface.OnClickListener() {

                            @Override
                            public void onClick(DialogInterface dialog, int which) {
                                //TODO Auto-generated method stub

                            }
                        });
                        alertDialog.show();*/
                    }
                }
                else
                {
                    updateDisplay(activeDateDisplay, activeDate);
                }

           }

            unregisterDateDisplay();
        }
    };

    private void unregisterDateDisplay() 
    {
        Log.d("startdate ",""+(currentDate.get(Calendar.DAY_OF_MONTH))+(currentDate.get(Calendar.MONTH)+1)+(currentDate.get(Calendar.YEAR)));
        Log.d("from date:","-"+activeDate.DAY_OF_MONTH+activeDate.MONTH+activeDate.YEAR);
        activeDateDisplay = null;
        activeDate = null;
    }

    @Override
    protected Dialog onCreateDialog(int id) {
        switch (id) {

            case DATE_DIALOG_ID:
                Log.d("fromdate","msg");
                Log.d("id",""+DATE_DIALOG_ID);
                return new DatePickerDialog(this, dateSetListener, activeDate.get(Calendar.YEAR), activeDate.get(Calendar.MONTH), activeDate.get(Calendar.DAY_OF_MONTH));
        }
        return null;
    }

    @Override
    protected void onPrepareDialog(int id, Dialog dialog) {
        super.onPrepareDialog(id, dialog);
        switch (id) {
            case DATE_DIALOG_ID:
                Log.d("id",""+DATE_DIALOG_ID);
                ((DatePickerDialog) dialog).updateDate(activeDate.get(Calendar.YEAR), activeDate.get(Calendar.MONTH), activeDate.get(Calendar.DAY_OF_MONTH));
                break;
        }
    }

    public void leave(View view)
    {
        Intent intent1=new Intent(this,Rough.class);
        setContentView(R.layout.activity_rough);
        startActivity(intent1);
    }
    public void logout(View view)
    {
        Intent intent2=new Intent (this,MainActivity.class);
        setContentView(R.layout.activity_main);
        startActivity(intent2);
    }
}

InformationsquelleAutor user2179989 | 2013-04-05