Part 1: Change operator (20%) in this exam, you will be asked to write a calculator program. The layout of the calculato

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Part 1 Change Operator 20 In This Exam You Will Be Asked To Write A Calculator Program The Layout Of The Calculato 1 (28.63 KiB) Viewed 10 times

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Part 1: Change operator (20%) in this exam, you will be asked to write a calculator program. The layout of the calculator is shown as the below. The radio button (Add Subtract Mand Deared for det mer operator When the buttons selected, the associated operator will be shown en the two operands. Seis an example when the multiply radio button is clicked ty Result Part 2: Display (20%) The middle of your screen should show left operandighed andre. The operands and should show hit when there is no value (See the above figures. The value can only be updated by the virtual keyboard which you will implementit in part 3. All the text displays should use Terview o other views should be allowed. Remember to update the perion symbol when the associated rado button is selected. Below are an examples showing how the d O SATA 191730 2.3333333
Part 3: Soft keyboard (45%) Create calculator keyboard using buttons. When the numerical button is clicked the selected operand will be updated according to the button value. There is a toggle button on the bottom of screen for user to switch operand (See screenshot below). When the equal button is clicked, the result TextView will be updated based on the current expression. If one of the operands is empty, a toast pop-up message should show on the screen, saying "The operand cannot be empty". Please also handle the issue of division by zero. Please also use a toast pop-up message to show a reasonable message. When the clear button is clicked, all the operands and result TextView should set back to the default (Remember to show the hint). How to Update Operand Value Mid A 63 CLEAR Result . . LEFT vide Right Operand 1 Mid 63 1 CLEAR @p Result GAT 0 11:47 Mid Aly 63 1 CLEAR 126 . 1 1 . RIGHT 2 7 1
Show Error Message When Empty Operand Mid 54 Mid = . CLEAR 98 = Result CLEAN •Right Operand S How to Clear TextViews AM I vide 53 1 3:13:22 45 1 Ave 54 . 3 CLEAR Left Operand . 3 •Right Operand Result I They My 2011 Result V RIGHT F 1 Right Operand
Part 4: Night Mode (15%) Add a switch on top of your screen called Night Mode. When night mode is on, the background color changed to dark gray (Color.DKGRAY). Remember to change all your text to white and hint to light gray except the soft keyboard. Below depicts the result when the switch is clicked. Mid Night Mode = AddSubcMily Divide Left Operand + Right Operand Left Operand Result " 4 1 CLEAR 2 D LEFT 1 Mid 1 Night Mode = CLEAR Sub Muly Divide Right Operand Result LEFT Mid Night Mode 58 = CLEAR Mpy Divide 174 RIGHT 3