Input and Submit

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Prototype a Login experience with a form, error messages and a success modal

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Advanced Prototyping in ProtoPie

Advanced Prototyping with ProtoPie

11:48

Quick Prototyping

11:46

Start Animation and Sequence

12:36

Drag and Release

9:38

Toggle with Conditions

11:48

Screen Transition

12:53

Pull to Dismiss

6:59

Page Scroll Position

11:57

Input and Submit

13:41

Chain and Drag 3D

7:45

Formula and Detect

16:37

Range and Card Animation

15:32

Variable and Detect Mouse

12:02

Sensors and Receive

12:47

Getting Started

We're going to start off by creating a new Pie and importing the Login Artboard from Sketch @3x.

Scroll

The first thing is to create a scroll. Create a new container and set the width as well as the height to 100%. Then put everything except for the status bar and the home indicator inside it. The container is going to be called "Scroll".

Inputs

Right now, we have bitmaps so we're going to replace those with actual Inputs. Click on Text and insert an Input. The goal is to recreate exactly the same style as in the design. Change the fill, set the opacity to 0. The same for the border. Now, change the font to SF Pro Rounded with a size of 15 and then change the color to #5C749F.

Input Placeholder

Let's change the Placeholder text, navigate to PlaceHolder in the property panel on the right side, we're going to put "Your Email". The placeholder text can have a different color, so we can either use the same color #5C749F or a different color, and it's up to you. Now, we need to align the "input" container that we just created and replace the bitmap that you can delete now.

To fix the padding, scroll down to the bottom of the property panel and uncheck Padding. We can name the input Email and duplicate this for Password. Change the placeholder to Password.

Focus In

We have to scroll the content when the keyboard is visible. Select the Email field and then add a trigger for that called Focus. Focus In means that that the Input field is being focused on, and Focus Out is when you stop focusing on it.

Select the Scroll and add a response, and then give it a value of 300 for Scroll To.

Focus Out

We can do the same for Focus Out. Select Email first, add a trigger, Focus. Create a Scroll response and set the Scroll To to 0.

Success

When we click on Log In, we want to show a success modal with a Lottie animation. The first thing is to create a Rectangle, set the width to 315 and height to 380. Center it within the screen. Then set the radius to 20 with the Fill to #FFFFFF. Add a Shadow, 15% black, 20 Y, and then 20 Blur.

Text 15 black "Congrats, you should receive an email shortly!"

Text 20 red email@gmail.com

Lottie Video

We're going to head to **LottieFiles.com** and search for Success. We'll need an account, but you can use any of these animations. We'll select one according to out needs. If you click on the triple dots above the video preview, you can see that you can export it as GIF, MP4. These formats are supported by ProtoPie, and "Lottie JSON" is what we're implementing in code in a real app. In this case, we're going to export it as MP4.

Animation

We can drag and drop the video file right inside ProtoPie and it's going to play it. Navigate to Bottom options check Play Automatically and Looping and align it to the center.

Text

We're going to add text to the modal. Select text and Move it inside the modal we created. Resize, set the text to SF Pro Rounded and center it.

You can put any text right here. Duplicate this and put an email so that we can change it and show that the email has been submitted. Now, change the text to **email@gmail.com.** Set the color to #FA5252 and font-size to 20. Also, name the layer to "Success Email", group the 4 layers as "Success" and set opacity 0% by default.

Trigger

Using trigger we're going to make it appear after the Log In button. To do that, select the Log In button. Click on Tap and select Success, set opacity to 100%.

Error Messages

It's important to include error messages in our design and prototype. To do so, select Text and place it above the "Email" input field.

Size 120x40

Change text to "Email Invalid" and center it

Set the font to SF Pro Rounded and **the **Color to White

Error Background

Set the color to #FA5252 with a radius of 5.

Conditions

To create the interaction for the error message rename text layer as "Error"

add condition for Tap and Select the "Email" field for the condition

Text of Email ≠ "NONE"

Set opacity to 100% and default opacity to 0%

We need to add another condition, copy-paste the previous and set to "is not equal to nothing" and delete this. Move the tap (rectangle) below which will make the modal appear. Reset the "Error" which will reset the error message when the Submit is successful.

Tap Background

To have a background where we can tap on and exit the success modal. Create a rectangle sized 375x812, set color to Black and opacity to 0%. Name the layer as "Background" and move it below the Bars. Add a condition and set the opacity to 50%.

Trigger

Add Tap and Reset Background, Success and Error

Now, when we click on Log In, it goes to Success. Tap the background and it resets everything.

Confirmation

To show the email that we input in the success modal as a confirmation reset the Email field.

Now select "Success Email". Add a Text condition and set the content to Formula now ****enter the following text:

Email.text

Conclusion

We've learned a bunch of new techniques, including how to work with inputs, how to validate the email, how to scroll the content, and then we've created a nice success modal. I hope you find this useful. In the next session, we're going to learn how to chain 3D animations with a Drag trigger.

BACK TO

Page Scroll Position

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Design template

Source code for all sections

Video files, ePub and subtitles

Videos

ePub

Assets

Subtitles

Advanced Prototyping with ProtoPie

Create high-fidelity prototypes with variables, formula, conditions and sensors

11:48

Quick Prototyping

Learn the basics of ProtoPie and create a prototype for your entire app in minutes

11:46

Start Animation and Sequence

Learn how to use the Start trigger, animation responses and timing

12:36

Drag and Release

Use Drag, Touch Up and Touch Down to create gestures with cards

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Toggle with Conditions

Create multiple animation states and toggle back and forth between them

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Screen Transition

Create a custom transition between screens and that jumps to another scene

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Pull to Dismiss

Create a dismiss interaction that transitions back to a previous screen

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Page Scroll Position

Prototype an onboarding experience with 3 screens and use the scroll position to set the page indicator

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Input and Submit

Prototype a Login experience with a form, error messages and a success modal

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Chain and Drag 3D

Use the drag position to move and animate with perspective

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Formula and Detect

Use object properties, functions and type conversions to power your prototype

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Range and Card Animation

Detect a range of values to trigger a response and create screen transitions

15:32

Variable and Detect Mouse

Store dynamic values from your mouse and create a parallax effect

12:02

Sensors and Receive

Use Tilt to detect the angle on your device and Send & Receive values

12:47

Meet the instructor

We all try to be consistent with our way of teaching step-by-step, providing source files and prioritizing design in our courses.

Meng To

I design, code and write

Meng To is the author of Design+Code. Meng started off his career as a self-taught designer from Montreal and eventually traveled around the world for 2 years as his US VISA was denied. During his travels, he wrote a book which now has 35,000 readers.

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