name
Flex
performance
Improve performance
Avoid multi-layer nested containers
A good experience is to avoid the nesting of the container more than three layers.
Fill unwanted blank with Spacer objects
Absolute positioning and zoom
Calculation of each container and its sub-object size and location takes up a large number of resources
Object location fixed coding
Use the Canvas container, other types of containers (such as VBOX) cannot use absolute positions
Secure the object width and height
The processing load of the relative layout manager can be reduced, thereby accelerating the creation of containers and controls.
Avoid common container redundancy
VBOX container in the
The container can be discarded as the top label of the MXML component.
Unnecessary VBOX containers out of the MXML component to set some styles, you can set the style on the component
Re-evaluation of the selection of containers
Improve performance experience
Postponed instantiation
Can be used when you don't have to display a screen display
The navigation bar container (Viewstack, Accordin, Tabnavigator) has been delayed, and the default delay is delayed
CreationPolicy = "auto, all, none"
Gamble layout
Need a screen display, but the redraw is low-efficient
Get good performance in the running time (not suitable)
Note: Don't use the setStyle () method for the first time.
Style use
External CSS style sheet, (global style)
data service
Flash safety sandbox
Due to the presence of the Flash Player Safety Sandbox, requests for web services can only be used to load SWF files.
Use a proxy (not in the same host or domain)
UseProxy = "true" attribute directly calls the service.
Do not use the agent (in the same host or domain)
UseProxy = "false" attribute directly calls the service. Terminal Services must have a crossdomain.xml file.
The best transmission data method for both performance is the use of HTTPService XML and RemoteObject using AMF.
Web service agent
Remote object agent
HTTP service
Implement
Pre-compilation MXML page
The pre-compiled application can also make developers distribute non-source applications.
Flex
1. See some functions in the original class in mx.swc
2. Cellrenderer, Labelfunction
View Cellrenderer API
3.Effect Use change display effect
MouseDowneffect
MouseoveReffect
Mouseupeffect
Moveeffect
Resizeeffect
SHOWEffect
Mouseouteffect
Hideeffect
3. Other tricks to see Flexbook
JavaScript
1. Use GetURL directly to use JavaScript
Open full screen window
GETURL (JavaScript: Void (Window.Open ('Test.mxml', 'NewWindow', 'Fullscreen = YES, TYPE = FullWindow, Scrollbars = NO, Directories = NO, STATUS = NO, MENUBAR = NO')))));
Close the current window (no prompt is closed)
GetURL (JavaScript: window.comNer = 'DSG'; window.close (););
2. Add JavaScript in the generated HTML file, use JavaScript through geturl
