How do progress bars work




















Create and prototype your own progress bars in Justinmind. Progress bar by Krishanpal Singh This progress bar makes use of calm gradients and quirky illustrations. Progress saving by Kevin Jones This progress bar is for saving your work, presumably to the cloud. Loading Astronauts by Supi Illustrations are a great way to create engagement and add visual interest to a user interface.

Runners progress bar by Think Studio Similar to the last one, this progress bar works for the runners among us. Sign up page progress steps by Pal Blanke Ah, another progress bar that sets expectations. Snail progress bar by Andrey Davlikanov This progress bar is fun, colorful and different. Progress bar by C. C We love this progress bar by C. Spotify song progress bar ft.

Stranger Things Ooooh, Stranger Things! Related Content. Top web design books you need to read. There's a huge amount of web design books out there - but don't worry. We got the top 10 books that you can't miss out on! If so, use a notifications instead. In this case, users do other tasks in the meantime and are not monitoring the progress. Using a notification allows users to perform other tasks without disruption.

Examples of such lengthy operations include printing, backup, system scans, and bulk data transfers or conversions. When the operation is complete, will users be able to replay the results?

If so, use a slider instead. Examples of such operations include video and audio recording and playback. In this example, a slider is used to indicate progress while playing sound. Doing so allows users to replay the results later.

During a lengthy operation, users need a general idea of what the operation is doing. They also need to know:. Use determinate progress bars for operations that require a bounded amount of time, even if that amount of time cannot be accurately predicted. Indeterminate progress bars show that progress is being made, but provide no other information. Don't choose an indeterminate progress bar based only on the possible lack of accuracy alone.

For example, suppose an operation requires five steps and each of those steps requires a bounded amount of time, but the amount of time for each step can vary greatly.

In this case, use a determinate progress bar and show progress when each step completes proportional to the amount of time each step usually takes.

Use an indeterminate progress bar only if a determinate progress bar would cause users to conclude incorrectly that the operation has locked up. Make sure that you provide progress feedback for lengthy operations and that the above information is clearly communicated. Use determinate progress bars whenever possible. Provide progress feedback when performing a lengthy operation. Users should never have to guess if progress is being made.

Clearly indicate real progress. The progress bar must advance if progress is being made. If the range of expected completion times is large, consider using a non-linear scale to indicate progress for the longer times. You don't want users to conclude that your program has locked up when it hasn't. Clearly indicate lack of progress. The progress bar must not advance if no progress is being made.

You don't want users to wait indefinitely for an operation that is never going to complete. Provide useful progress details. Provide additional progress information, but only if users can do something with it.

Make sure the text is displayed long enough for users to be able to read it. In this example, users can see the transfer rate. The low transfer rate here suggests the need for using a high-bandwidth network connection.

Don't provide unnecessary details. Generally users don't care about the details of the operation being performed. For example, users of a setup program don't care about the specific file being copied or that system components are being registered because they have no expectations about these details. Typically, a well-labeled progress bar alone provides sufficient information, so provide additional progress information only if users can do something with it.

Providing details that users don't care about makes the user experience overly complicated and technical. If you need more detailed information for debugging, don't display it in release builds.

In this example, Windows Explorer is copying files the user selected, so displaying the filenames being copied is meaningful. Provide useful animations. If done well, animations improve the user experience by helping users visualize the operation.

Good animations have more impact than text alone. For example, the progress bar for the Outlook Delete command displays the Recycle Bin for the destination if the files can be recovered, but no Recycle Bin if the files can't be recovered.

In this example, the lack of a Recycle Bin reinforces that the files are being permanently deleted. This additional information wouldn't be communicated as effectively using text alone. Don't use unnecessary animations.

The same could be said about registry entries. They vary in length and sophistication. Your stubborn computer will always win over any attempt to accurately predict something that, in a vacuum, would otherwise have completed in a timely manner. Dark loading or progress bar by BigStockPhoto. By signing up, you agree to our Privacy Policy and European users agree to the data transfer policy.

Miguel has been a business growth and technology expert for more than a decade and has written software for even longer. From his little castle in Romania, he presents cold and analytical perspectives to things that affect the tech world. I hate the progress bars that get to the end and then repeat. Why bother. An inaccurate bar is better than a worthless one. Here Are 12 Fixes.

Later, when the progress bar switches from indeterminate to determinate mode, invoking setString null makes the progress bar display its default string. One change we did not make was removing the call to progressBar. The call doesn't do any harm because an indeterminate progress bar doesn't use its value property, except perhaps to display it in the status string. In fact, keeping the progress bar's data as up-to-date as possible is a good practice, since some look and feels might not support indeterminate mode.

Now let's rewrite ProgressBarDemo to use a progress monitor instead of a progress bar. Here's a picture of the new demo program, ProgressMonitorDemo:. A progress monitor cannot be used again, so a new one must be created each time a new task is started.

This program creates a progress monitor each time the user starts a new task with the Start button. This code uses ProgressMonitor 's only constructor to create the monitor and initialize several arguments:. By default, a progress monitor waits a minimum of milliseconds before deciding whether to pop up the dialog. It also waits for the progress to become more than the minimum value. If it calculates that the task will take more than milliseconds to complete, the progress dialog appears.

To adjust the minimum progress time required for a dialog to appear, invoke setMillisToPopup. By the simple fact that this example uses a progress monitor, it adds a feature that wasn't present in the version of the program that uses a progress bar: The user can cancel the task by clicking the Cancel button on the dialog.

Here's the code in the example that checks to see if the user canceled the task or if the task exited normally:. Note that the progress monitor doesn't itself cancel the task. If you decide to use a progress monitor and the task you are monitoring is reading from an input stream, use the ProgressMonitorInputStream class.

The following tables list the commonly used API for using progress bars and progress monitors. Note that ProgressMonitor is a subclass of Object and is not a visual component. All rights reserved.

Hide TOC. Using Swing Components. For example, the following code makes the wait cursor be displayed when the cursor is over container including any components it contains that have no cursor specified : container. Alternatively, to compile and run the example yourself, consult the example index.



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