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Webinar Series 40 UI Design
This article is companion for the Series 40 UI design webinars. It contains solutions and proposals for the webinar exercises and discusses open issues which could not be solved during the webinar Q/A session.
Webinar Series 40 Full Touch UI Style Guide, part 1, 28.06.2012 and 04.07.2012
How would this screen look in Series 40 Full Touch?
Create a sign-in view.
It should contain:
- Setting for auto-fill password
- Forgot password & help
The second proposal has everything available in the view, but it is not likely that it will work flawlessly with Touch & Type devices. However, since the additional elements in the view (Login button and Help hyperlink) are more prominent, it is expected to reduce interaction bumpers if the design is optimized for Full Touch.
Which component would you use to pick one of the following?
How would you replace a single choice item (aka switch)?
- Alerts can have 0 – 3 buttons. Position and layout are predefined.
- StringItem in a Form screen can be dressed as a button or as a labeled button. It is only possible to show one button per row.
- The CustomItem in Form screen can host a button or a button group.
- The full screen canvas can contain buttons. The 4th image shows custom surround-shaped push-buttons with icons and with additional text below the push button. If the button is based on icons it is many times beneficial to add text explaining the action being mapped to the button.
- A canvas with a custom toolbar, as shown in the 5th image. Do not place more than 5 items in a toolbar.
Open issues from Q/A
What happens with the keypad if BT keyboard is detected?
Regarding connecting a Bluetooth enabled device to a full touch series 40 and getting input from the BT device into a custom 3rd party Java application, the following rules apply:
1. Direct connection of a BT device to a Java application is only possible if the BT device supports the Bluetooth Profiles that are coming with the JSR-82 (the Bluetooth API):
- SDAP - Service Discovery Application Profile
- RFCOMM - Serial Cable Emulation Protocol
- L2CAP - Logical Link Control and Adaptation Protocol
- OBEX - Generic Object Exchange Profile (GOEP) profile on top of RFCOMM and TCP
2. The Virtual Keyboard API does not provide any editor functionality. It merely launches and controls the virtual keyboard provided by the platform on low level Canvas and GameCanvas Components and returns into the application the key that was pressed with the help of the keyPressed(int key) method. So theoretically, one can call remotely the keyPressed(int key) method directly with a value that matches the integer value of the key that is supposed to be pressed.
Can text be formatted, e.g. rich text formatting?
Regarding StringItem one can change the font. Fonts have three attributes: Style (bold/italic), size (large or small) and face (monospace, proportional and system). One cannot change the color of a StringItem.
It is not possible to format the text in TextBox screen.
Canvas allows free formatting.
If formatting is needed for certain components, please have look into LWUIT if this is suitable for you.
How is the image in an ImageItem being cropped in landscape orientation?
Here is the example image:
When the Layout is set to LAYOUT_LEFT or LAYOUT_CENTER, this is the result in portrait mode:
When the Layout is set to LAYOUT_LEFT or LAYOUT_CENTER, this is the result in landscape mode:
How can you do custom gestures yourself?
1. It is possible to use the existing gestures and build your custom gesture on top of it; here 2 examples:
- if you want to make your application to sense a figure of "8" on your screen, use a "drag" gesture and use the x/y values for your pattern recognition
- if you want to use triple touch, e.g. to mark the entire text, use 3 single taps for your gesture recognition
More information on how to use Gestures.
Tap drag and release can also be implemented outside the Gesture API, with the standard LCDUI low level Canvas components. More information on Touch UI on Series 40.
2. It is possible to use the sensor API to e.g. get direct x/y/z information of the phone. this way, you can e.g. sense the position changes of the phone to detect if the user is writing a figure of "8" into the air (with the phone in her hand). The phone can detect accelerations between -2g and +2g.
Sensor API link will be added.