Developers multithread Android applications in order to improve their performance and usability. By spinning off processor- or resource-intensive tasks into their own threads, the rest of the program can continue to operate while these processor intensive tasks finish working.

Includes knowledge areas

Locks, Conditions, Atomics

Lock implementations provide more extensive locking operations than can be obtained using synchronized methods and statements. Conditions provide a means for one thread to suspend execution (to "wait") until notified by another thread that some state condition may now be true.

Manual Threads

A manual thread is any thread an application starts and controls itself.

Handlers & Loopers

Android Looper is a Java class within the Android user interface that together with the Handler class to process UI events such as button clicks, screen redraws and orientation switches.


Factory and utility methods for Executor, ExecutorService, ScheduledExecutorService, ThreadFactory, and Callable classes defined in this package.

Concurrent Collections

Besides Queues, this package supplies Collection implementations designed for use in multithreaded contexts: ConcurrentHashMap, ConcurrentSkipListMap, ConcurrentSkipListSet, CopyOnWriteArrayList, and CopyOnWriteArraySet.

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The rich text element allows you to create and format headings, paragraphs, blockquotes, images, and video all in one place instead of having to add and format them individually. Just double-click and easily create content.

Static and dynamic content editing

A rich text element can be used with static or dynamic content. For static content, just drop it into any page and begin editing. For dynamic content, add a rich text field to any collection and then connect a rich text element to that field in the settings panel. Voila!

How to customize formatting for each rich text

Headings, paragraphs, blockquotes, figures, images, and figure captions can all be styled after a class is added to the rich text element using the "When inside of" nested selector system.