time picker showing time like 4:7 instead of 04:07

Just change the line:

txtTime1.setText(hourOfDay + ":" + minute);

to:

txtTime1.setText(String.format("%02d:%02d", hourOfDay, minute));

and all will be well.

If you want a 12-hour clock instead of a 24-hour one, then replace that line with these instead:

int hour = hourOfDay % 12;
if (hour == 0)
    hour = 12;
txtTime1.setText(String.format("%02d:%02d %s", hour, minute, 
                               hourOfDay < 12 ? "am" : "pm"));

or you could do it in just 2 lines with:

int hour = hourOfDay % 12;    
txtTime1.setText(String.format("%02d:%02d %s", hour == 0 ? 12 : hour,
                               minute, hourOfDay < 12 ? "am" : "pm"));

The logic is simple, i have just trimmed the answers above

just replace the line where we set time in editText with

txtTime.setText(pad(hourOfDay) + ":" + pad(minute));

then add a function for it i.e

       public String pad(int input) 
         {

            String str = "";

            if (input > 10) {

                str = Integer.toString(input);
            } else {
                str = "0" + Integer.toString(input);

            }
            return str;
        }

You can check if the hours and minutes are less then ten. If so, you just add a "0" infront of that specific string. Just modify your code like this:

@Override
    public void onTimeSet(TimePicker view, int hourOfDay,
    int minute) {
        // Display Selected time in textbox

        String hourString;
        if (hourOfDay < 10)
            hourString = "0" + hourOfDay;
        else
            hourString = "" +hourOfDay;

        String minuteSting;
        if (minute < 10)
            minuteSting = "0" + minute;
        else
            minuteSting = "" +minute;

        txtTime1.setText(hourString + ":" + minuteSting);
    }