Hello! Flex 4 by Peter Armstrong

By Peter Armstrong

I do not find out about you, yet I are likely to have little or no admire for a ebook that purports to educate you whatever while the first actual instance comprises an blunders. the easiest instance within the publication will not assemble when you style it in as certain on web page 6, Hello.mxml!! which means either the writer and the editor both do not know what they're speaking approximately, or worse, do not care adequate in regards to the reader to make sure the cloth is right. In both case, the e-book isn't really worthy buying!! the one cause i am giving this 1 famous person is that i have not but long past past the 1st instance, so if the booklet is ready to get over this preliminary debacle, i'm going to revise this review....as it stands now though...DO now not purchase THIS PIECE OF JUNK!! Oh, and incidentally to get the 1st instance to assemble easily switch the tag to this:

Now used to be that SO DIFFICULT??

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Hello! Flex 4

I do not find out about you, yet I are likely to have little or no admire for a booklet that purports to educate you anything whilst the first actual instance includes an errors. the best instance within the ebook will not collect should you kind it in as distinctive on web page 6, hi. mxml! ! which means either the writer and the editor both do not know what they're speaking approximately, or worse, do not care adequate in regards to the reader to make sure the fabric is right.

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Collections package. com> 34 CHAPTER 2 ActionScript 3, XML, and E4X than Array is, and Flex is all about data binding. This example shows that looping over an ArrayCollection is similar to an Array, except the getItemAt(index) method is used instead of the someArray[index] subscript notation. This example also shows the switch/ case statement, which is used for multiway branching. Finally, note something very subtle: I used j and not i for my loop index variable, since I had already used a loop index variable i earlier in the function and since variables inside a function are all in the same scope.

Text;"/> q w q We create a new Task variable, _task, which is Bindable, and initialize the name property to Learn Binding. com> SESSION 3 The Bindable annotation and data binding 13 w The _task variable’s name property (which is also Bindable) is bound to the text property of both textInput1 and textInput2. Running the application, we see that the TextInputs are both bound to the name property. Typing in either of them and then focusing out (by, say, pressing the Tab key) assigns the text to the model’s name property, which then updates the other TextInput’s text.

HandleClick Running the application and clicking the button1, button2, and button3 Buttons in order produces the screenshot shown here. ➼ Key points ❂ ❂ ❂ ❂ Events can be handled either in the attributes directly or in explicitly written event handler functions. Event handlers can be attached to UI components in MXML attribute values or in ActionScript addEventListener calls. Event objects have a target property, which is the source of the event. In MXML, components can be nested in Group objects.

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