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Date & Time in Android

Date Picker AlertDialog Box: (XML file)

In JAVA:

public void alertDatePicker() {
    LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    View view = inflater.inflate(R.layout.date_picker, null, false);
 
    int dialogTheme = R.style.DialogTheme;
    final DatePicker myDatePicker = (DatePicker) view.findViewById(R.id.myDatePicker);
    myDatePicker.setMaxDate(System.currentTimeMillis());  //For disabling Future Dates
    myDatePicker.setCalendarViewShown(true);
    new AlertDialog.Builder(context, dialogTheme).setView(view)
            .setPositiveButton("OK", new DialogInterface.OnClickListener() {
                @TargetApi(11)
                public void onClick(DialogInterface dialog, int id) {
                    int month = myDatePicker.getMonth() + 1;
                    int day = myDatePicker.getDayOfMonth();
                    int year = myDatePicker.getYear();
                    String fromDate = year + "-" + month + "-" + day;
                    dialog.cancel();
                }
            }).setNegativeButton("CANCEL", new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialog, int which) {
            dialog.dismiss();
        }
    }).show();
}

date_picker.xml

<DatePicker xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/myDatePicker"
    style="@style/LinearLayout_mm"
    android:maxDate=""
    android:scaleX="1"
    android:scaleY="1"
    android:theme="@style/DialogTheme" />


style.xml:


<style name="DialogTheme" parent="Theme.AppCompat.Light.Dialog">
    <item name="colorAccent">@color/blue</item>
    <item name="android:alertDialogTheme">@color/blue</item>
</style>


====================

To get DEVICE TIME:


Calendar ci = Calendar.getInstance();
DEVICE_TIME = "" + ci.get(Calendar.YEAR) + "-" +
        (ci.get(Calendar.MONTH) + 1) + "-" +
        ci.get(Calendar.DAY_OF_MONTH) + " " +
        ci.get(Calendar.HOUR_OF_DAY) + ":" +
        ci.get(Calendar.MINUTE) + ":" +
        ci.get(Calendar.SECOND);


===================

Getting CurrentDate:


private SimpleDateFormat dfDate = new SimpleDateFormat("yyyy-MM-dd");
public String getCurrentDate() {
    int yr, month, day, hour
    Calendar today = Calendar.getInstance();
    yr = today.get(Calendar.YEAR);
    month = today.get(Calendar.MONTH);
    day = today.get(Calendar.DAY_OF_MONTH);
    hour = today.get(Calendar.HOUR_OF_DAY);
    return (yr + "-" + getLength(month + 1) + "-" + getLength(day));
}
public static String getLength(int i) {
    if (i > 9)
        return "" + i;
    return "0" + i;
}

=
===================



Comparing CurrentDate & FromDate:

String fromDate = year + "-" + month + "-" + day;
public boolean fromDateCheck(String fromDate) {
    try {
        String toDate = pref.getString("TO_DATE", getCurrentDate());
        Date toDATE = dfDate.parse(toDate);
        Date fromDATE = dfDate.parse(fromDate);
        if (fromDATE.before(toDATE) || fromDATE.compareTo(toDATE) == 0) {
            SharedPreferences.Editor editor = pref.edit();
            editor.putString("FROM_DATE", fromDate);
            editor.putString("TO_DATE", toDate);
            editor.putBoolean("DATE_CHANGED", true);
            editor.commit();
            return true;
        } else if (fromDATE.after(toDATE)) {
            Toast.makeText(this.context, "Invalid Date",Toast.LENGTH_SHORT).show();
            return false;
        } else {
            Toast.makeText(this.context, "Choose Correct Data", Toast.LENGTH_SHORT).show();
            return false;
        }
    } catch (Exception e) {
    }
    return false;
}


==========================

Convert Time to another Format:

Date SD;
Date DD;
String DdOutput;
String sdOutput;
getconvertDEVICE_date(DEVICE_TIME);
private String getconvertDEVICE_date(String date) {
    DateFormat inputFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss", Locale.ENGLISH);
    DateFormat outputFormat = new SimpleDateFormat("dd-MM-yyyy HH:mm:ss", Locale.ENGLISH);
    try {
        DD = inputFormat.parse(date);
    } catch (ParseException e) {
        e.printStackTrace();
    }
    DdOutput = outputFormat.format(DD);
    return DdOutput;
}


==============================






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