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Flash 开发常见性能优化几招叶盛飞 天地会 id: MoonSpirit

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Topic Preview•Interval by Enterframe or Timer•Base-display by MovieClip or Sprite•Advance-display by DisplayObjects or BitmapData

View renderer

•Creation in once or beating•Layout by relative or absolute•Refresh upon removeAll or removePart•Update by binding or push•Listener in Strong or Weak referance

View management

•Integration by UIMovieClip or MovieClip•Assets-load by each or packed

View integration

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Part One View Renderer

Advance-display

• DisplayObje

cts or BitmapData

Base-display

• MovieClip or Sprite

Interval

• Enterframe or Timer

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Interval by Enterframe or Timer

EnterFrame Timer

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Base-display by MovieClip or Sprite

DisplayObject

Shape Sprite

MovieClip UIComponent

Canvas

Box

Choose what fit you most!

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Advance-display by DisplayObjects or BitmapData

DisplayObjects BitmapData

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Part TwoView Management

Creation• in once

or beating

Layout• by

relative or absolute

Refresh• upon

removeAll or removePart

Update• by binding

or push

Listener• in Strong or

Weak referance

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Creation in once or beating

Plenty of item to show on an

e-business page Plenty of Flags or signs to

layout on a map applicationVarieties of elems to init in a

game world

Create once all

Create part

Create part

Next Interval

…

Next Interval

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Layout by relative or absolute

Relative layout Absolute layout

changeabletendency static

tendency

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Refresh upon removeAll or removePart

Inventory

refreshSign

refresh

Form list refresh

Remove ALL

at once!

Create ALL at once!

Violent!

Check reserved

Remove

unnecessary

Create necessary

remain

Elegant!

xxx

refresh

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Update by binding or push

Global binding• (D)Framework reliable• (D)Least efficient in

running• (A)Most efficient in

development• (A)Do not care referance

Self-binding• (D)Least efficient

in running• (D)Care

referance• (A)no

Framework reliable

Pushing• (D)Care

referance • (D)Least

efficient in developing

• (A)Most efficient in running

• (A)No framework reliable

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Listener in weak or strong referance

Weak referance preferred

Manually remove listener preferred

Use global event properly

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Part ThreeView Integration

Integration

• by UIMovieClip or MovieClip

Assets-load

• by each or packed

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Integration by UIMovieClip or MovieClip

Flex framwork

MovieClip

UIMovieClip UIComponent

1

2 3

CPU leak!

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Assets-load by each or packed

By each By packed

handler many several

bandwidth cost much subtle

preload management difficult easy

modification cost low high

preferred situation any time final release