爱华网网上一直都是说，用flash做的课件功能比PPT强大些，但是用flash做课件时，其实面临着一个尴尬的问题，就是遇上课件中需要切换显示大量图片时，做起来相当麻烦，至少比在PPT中做时要麻烦许多，网上也流传着用 transitions 及 tween类切换图片，但要么不实用，要么效果单调，经过慢慢分析这两种类的用法后，牺牲一个下午终于在flash中把flash中切换显示图片这个另人头痛的问给解决了，共27种图片切换特效，以后做课件又可以省不少力了，直接准备好图像文件调用即可，代码帖出如下：
//首先准备十四张图片在 .fla 文件相同目录下，文件名分别为: 1.jpg ,2.jpg,...,14.jpg
//该段代码在第一个关键帧复制过去即可
//该段代码在理解时，要弄清flash as 中的数组时面向对象的，否则该段程序可能有些不好懂的哦
import mx.transitions.*;
import mx.transitions.easing.*;
fscommand("fullscreen", true); //全屏
var showID:Number = 0; //特效类型代码
var mc_array = new Array(14);//定义数组准备存储14个mc对象，其中每个mc对象在后面将加载图片
//定义数组存储27种图片切换参数,其中各特效具体参数还可直接在其中更改
var str_array = new Array(27); //flash 中的数组是面向对象的，大家学了C后这点变通应该没有问题吧
//遮帘(纵向、横向)
str_array[0] = {type:Blinds, direction:Transition.IN, duration:2, easing:None.easeNone, numStrips:20, dimension:0};
str_array[1] = {type:Blinds, direction:Transition.IN, duration:2, easing:None.easeNone, numStrips:20, dimension:1};
//淡化过渡（淡入、淡出）
str_array[2] = {type:Fade, direction:Transition.IN, duration:3, easing:None.easeNone};
str_array[3] = {type:Fade, direction:Transition.OUT, duration:3, easing:None.easeNone};
//飞行过渡（九个不同的方向)
str_array[4] = {type:Fly, direction:Transition.IN, duration:3, easing:Elastic.easeOut, startPoint:1};
str_array[5] = {type:Fly, direction:Transition.IN, duration:3, easing:Elastic.easeOut, startPoint:2};
str_array[6] = {type:Fly, direction:Transition.IN, duration:3, easing:Elastic.easeOut, startPoint:3};
str_array[7] = {type:Fly, direction:Transition.IN, duration:3, easing:Elastic.easeOut, startPoint:4};
str_array[8] = {type:Fly, direction:Transition.IN, duration:3, easing:Elastic.easeOut, startPoint:5};
str_array[9] = {type:Fly, direction:Transition.IN, duration:3, easing:Elastic.easeOut, startPoint:6};
str_array[10] = {type:Fly, direction:Transition.IN, duration:3, easing:Elastic.easeOut, startPoint:7};
str_array[11] = {type:Fly, direction:Transition.IN, duration:3, easing:Elastic.easeOut, startPoint:8};
str_array[12] = {type:Fly, direction:Transition.IN, duration:3, easing:Elastic.easeOut, startPoint:9};
//光圈过渡
str_array[13] = {type:Iris, direction:Transition.IN, duration:2, easing:Strong.easeOut, startPoint:5, shape:Iris.CIRCLE};
//渐变暴光
str_array[14] = {type:Photo, direction:Transition.IN, duration:1, easing:None.easeNone};
//像素溶解
str_array[15] = {type:PixelDissolve, direction:Transition.IN, duration:2, easing:None.easeNone, xSections:50, ySections:50};
//旋转过渡
str_array[16] = {type:Rotate, direction:Transition.IN, duration:3, easing:Strong.easeInOut, ccw:false, degrees:360};
//挤压过渡(二个方向)
str_array[17] = {type:Squeeze, direction:Transition.IN, duration:2, easing:Elastic.easeOut, dimension:1};
str_array[18] = {type:Squeeze, direction:Transition.IN, duration:2, easing:Elastic.easeOut, dimension:2};
//划入划出过渡--左上，1；上中，2；右上，3；左中，4；右中，6；左下，7；下中，8；右下，9
str_array[19] = {type:Wipe, direction:Transition.IN, duration:2, easing:None.easeNone, startPoint:1};
str_array[20] = {type:Wipe, direction:Transition.IN, duration:2, easing:None.easeNone, startPoint:2};
str_array[21] = {type:Wipe, direction:Transition.IN, duration:2, easing:None.easeNone, startPoint:3};
str_array[22] = {type:Wipe, direction:Transition.IN, duration:2, easing:None.easeNone, startPoint:4};
str_array[23] = {type:Wipe, direction:Transition.IN, duration:2, easing:None.easeNone, startPoint:6};
str_array[24] = {type:Wipe, direction:Transition.IN, duration:2, easing:None.easeNone, startPoint:7};
str_array[25] = {type:Wipe, direction:Transition.IN, duration:2, easing:None.easeNone, startPoint:8};
str_array[26] = {type:Wipe, direction:Transition.IN, duration:2, easing:None.easeNone, startPoint:9};
//弹性缩放
str_array[27] = {type:Zoom, direction:Transition.IN, duration:2, easing:Elastic.easeOut};
//采用数组载入全部图片，注：直接全部载入比较耗内存，如要节约内存的话，可定义两个mc采用类似双缓冲法进行改写,不过在这里重点是写出flash中内置的全部图片切换特效，以后有时间再改进
for (i=0; i<=13; i++) {
mc_array[i] = _root.createEmptyMovieClip("mc"+String(i+1), i+1);
mc_array[i].loadMovie(String(i+1)+".jpg", i+1);
}
//载入图片后，把各图片 mc 的位置摆放整齐，这里每张图片的大小都经过处理，尺寸完全一样（改变图片大小用photoshop一张张处理的话，比较麻烦，但是以前在做政务公开系统更新程序的时候，写过一个程序，来个批处理，眨几下眼的时间二、三十张图片就都处理完了。
for (i=1; i<=14; i++) {
with(eval_r("mc"+i))
{
_x=20;
_y=40;
_xscale=120;
_yscale=120;
}
}
//设置定时器调用图片切换函数
setInterval(showImages, 4000);
//图片切换函数
function showImages() {
mx.behaviors.DepthControl.bringToFront(mc_array[showID]); // 将下一个要切换的 mc 置顶
mx.transitions.TransitionManager.start(mc_array[showID], str_array[random(27)]); //随机特效将图片按顺序切换
if (showID++ == 13) {
showID = 0;
}
}
结语：谢谢这么多朋友关注这篇文章，当时是为了工作使用方便将其挂到网上的，后来看到好多人挺关注就又给这段程序加了详细的注释，在调整图片大小和位置的部分还没有做完善，各位flash爱好者可以尝试去完善些。
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