Question

1. Create a user interface similar to that shown in the screen capture below.
- use one Activity and three Fragments
- - MainActivity (UI: containers for the three fragments)
- - TotalsFragment (UI: Total Amount and caption)
- - Tax Fragment (UI: Tax Rate Seekbar, Tax Rate, Tax Amount and captions)
- - ItemsFragment (UI: Four Editboxes and captions in Scrollview)
- the ItemsFragment should be contained in a ScrollView so that it can move up with the keyboard.
2. Allow the user to select a tax rate using the SeekBar. The tax rate should range from 0 to 25%. Moving the SeekBar should update the tax rate, tax amount and total amount.
3. Allow the user to enter amounts in each of the four Item EditText boxes (use the decimal keyboard). The item amounts should be scroll-able via the use of a ScrollView.
4. Whenever an item amount or tax rate changes, the total amount should reflect the change.
5. The app should preserve state (including the state of the tax rate) by persisting all of the amounts in SharedPreferences using onPause() and onResume() .  
6. Check to insure that you have resolved all errors and warnings.

* N 1 0096 ? 10:15 PM CS3270A4 Rob Hilton $495.00 Tax Rate 10.00% Tax Amount $45.00 Total Amount 50 Item Amount 150 Item Amount 12 3 PC) WC) 4

Answer 1

Accessing arguments by position o, f1, 12)".format('a b', 'c') 12, f1, fo".format('a b', 'c') 12, f1, fo.format( "abc) c, b, a # unpacking argument sequence c, b, a >>> .(0)(1)(0)' .format ('abra', 'cad') # arguments, indices can be repeated abracadabra Accessing arguments by name >>Coordinates: (latitude, (longitude).format (latitude- '37.24N', longitude--115.81w) "Coordinates: 37.24N,-115.81W >>> coord-f'latitude37.24N', 'longitude':-115.81W) >>>Coordinates: (latitude, (longitude.format( *coord) "Coordinates: 37.24N, -115.81W Accessing arguments' attributes >>> ("The complex number {0) İS formed from the real part {0.real} ' .and the imaginary part (e.imag.').format(c) 'The complex number (3-51) is formed from the real part 3.0 and the imaginary part -5.0. >>> class Point (object): def -init-(self, self.x, self.y y): x, -x, y def str (self): return 'Point ((self.x, (self.yj).format(self-self) >>>str (Point (4, 2)) Point (4, 2)'

Aligning the text and specifying a width >>>1e:<30.format('left aligned') 'left aligned >>e:30.format('right aligned) right aligned >>e:30.format( centered) centered .(0:*^30)'·format('centered') '*' >>> # use as a fill char Replacing %+f, %4. and % f and specifying a sign >>> "(0:+f); {0:+f)' .format (3.14, +3.140000; 3.140000 >>> .(0: f); {0: f)' .format (3.14, "3.140000; 3.140000 >>> '10:-f); {0:-f)'.format(3.14, 3.140000; -3.140000 -3.14) -3.14) -3.14) # show it always # show a space for positive numbers # show only the minus-same as '{0:f); {0:f)' Replacing %x and %o and converting the value to different bases >>> # format also supports binary numbers >>>"int: (0:d; hex: (0:x oct: (0:o bin: (e:bj".format(42) int: 42; hex: 2a; oct: 52; bin: 101010 >>> # with 0x, 00, or 0b as prefix : >>> "int : {0 : d); hex: {0 : #x); oct : {0 : #o); bin: {0:#b)".format(42) int: 42; hex: 0x2a; oct: 0052; bin: 0b101010'

>>> for align, text in zip(<['left', center' "right']): (e:falignffill)16).format (text, fill-align, align-align) 'left<<KKKKKKK<K AAAAAcenterAAAAA >>>>right >>> octets [192, 168, 0, 1] >>>10:02x 11:02x12:02X)13:02x.format( octets) CØA80001" >>>int(, 16) 3232235521 >>>width 5 >>> for num in range (5,12): for base in 'dXob" print 'e:(widthbaseformat (num, base-base, width-width), print 5 101 6 110 8 10 1000 11 1001 12 1010 13 1011

>>> from string import Template >>> s = Template('$who likes $what') >>> s.substitute(who 'tim', what-'kung pao') tim likes kung pao >>> d-dict(who- 'tim') >>> Template( 'Give Şwho $100*).substitute(d) Traceback (most recent call last): ValueError: Invalid placeholder in string: line 1, col 10 >>> Template('Swho likes $what).substitute(d) Traceback (most recent call last): KeyError: 'what >>> Template('Swho likes $what").safe substitute(d) tim likes $what'