There is a lot of flex preloader tutorials all over the internet. If you take a closer look at each, you may notice those all extends DownloadProgressBar or SparkDownloadProgressBar classes. You may decide that these classes do not fit your needs, and it that case you can extend regular Sprite with IPreloaderDisplay implementation. Soon you realize there is some other Preloader in use, that communicates with your custom one through events. Following example contains a preloader implementation that renders a filled arc based on application load progress and RSL load progress. Lets have a look how to handle it properly.
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There are some usefull apis since Flash Player 10, I have never been playing with. Yesterday, I realized one experiment with Sound + SampleDataEvent and created quick demo for converting music into a bitmap and vice versa.
There is a Sound.extract() method in ActionScript allowing you to grab raw sound data from a sound object. It provides you ByteArray of 32-bit floating-point values, which can be converted to a Number using ByteArray.readFloat(). The resulting values are -1 < value < 1...
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With my latest approach to create universal parser, I came up with something simple yet mighty. SequenceParser is a simple (30 lines) class that crawles any source and matches specified list of highly customizable ISequences. While each sequence can contain list of nester sequences, you are able to parse any type of source with nested conditions and sequences. A good example can be an attribute inside a xml node, a xml node inside a xml node, an escape character inside quotas etc.
I have also created some example sequences like MatchAnything, MatchRegexp, MatchString, StartRegexpEndRegexp, StartRegexpEndString, StartStringEndString that should help to cover almost any possible parsing scenario. These sequences notifies back via callback containing parsed string, that is vital for further bulding additional logic like highlightning, validation over parsed phrases.
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Your video is usualy resized and played in a custom sized rectangle, but if you need to capture the fullscreen screenshot you may be tempted to gather the original size screenshot by resizing the whole component or its part. Its not the best practice, while you need to resize and move back and forth the component etc. Here is a quick tip to make a fullsize screenshot from spark osmf based VideoPlayer using Matrix.
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There are some hidden treasures deep in flex framework, you just have to dig for. Yesterday I hit by coincidence ConstraintLayout. Its a part of 4.5 SDK and is a nice layout for defining rows and columns for a table. Once columns and rows are created, your elements are not automaticaly aligned into a block, but rather any element can refer to any column/row using correct formula in style attributes. E.g. forumla left=”{columnId}:{value}” will attach your element into position of a column and offsetting it by some value. This layout also easily let you merge cells or rows etc.
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With default Flexmojo build setup your clients may easily fall into .swz load issue. Why clients? Because you already have .swz files cached in your player but they dont. Sure, you can turn off caching easily. The issue is textLayout and osmf uses a different version numbering and .swz location than the rest of the flex sdk .swzs. The exception by flex application may look something like this:
Error #2032: Stream Error. URL: http://fpdownload.adobe.com/pub/swz/flex/4.1.0.16076/textLayout_4.1.0.16076.swz
Error #2032: Stream Error. URL: http://fpdownload.adobe.com/pub/swz/flex/4.1.0.16076/osmf_4.1.0.16076.swz
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