根据阵列内的位置,按钮按顺序显示图像有多难?
我需要 NEXT 和 PREVIOUS 按钮。检查下面的数组。
阵列:
private var images:Array = ["Layer_1.jpg", "Layer_2.jpg", "Layer_3.jpg", "Layer_4.jpg", "Layer_5.jpg", "Layer_6.jpg", "Layer_7.jpg", "Layer_8.jpg"];
按钮:
private var triangleButton:triangle = new triangle;
//to call the function slideGames
triangleButton.addEventListener(MouseEvent.CLICK, slideGames);
装载机:
private var loader:Loader = new Loader();
完整代码:
package {
import flash.display.Loader;
import flash.net.URLRequest;
import flash.events.Event;
import flash.display.Sprite;
import flash.events.MouseEvent;
import flash.display.MovieClip;
public class play extends MovieClip {
private var loader:Loader = new Loader();
private var images:Array = ["Layer_1.jpg", "Layer_2.jpg", "Layer_3.jpg", "Layer_4.jpg", "Layer_5.jpg", "Layer_6.jpg", "Layer_7.jpg", "Layer_8.jpg"];
private var triangleButton:triangle = new triangle;
public function play() {
loader.load(new URLRequest("img/Layer_1.jpg"));
addChild(loader);
addChild(triangleButton);
triangleButton.x = 600;
triangleButton.y = 200;
triangleButton.addEventListener(MouseEvent.CLICK, slideGames);
function slideGames(event:MouseEvent):void
{
}
}
}}
答案 0 :(得分:1)
试试这个:
package {
import flash.display.Loader;
import flash.net.URLRequest;
import flash.events.Event;
import flash.display.Sprite;
import flash.events.MouseEvent;
import flash.display.MovieClip;
public class play extends MovieClip {
private var loader:Loader = new Loader();
private var images:Array = ["Layer_1.jpg", "Layer_2.jpg", "Layer_3.jpg", "Layer_4.jpg", "Layer_5.jpg", "Layer_6.jpg", "Layer_7.jpg", "Layer_8.jpg"];
private var triangleButton:triangle = new triangle;
public function play() {
loadNextImage();
addChild(loader);
addChild(triangleButton);
triangleButton.x = 600;
triangleButton.y = 200;
triangleButton.addEventListener(MouseEvent.CLICK, slideGames);
}
public function slideGames(event:MouseEvent):void {
loadNextImage();
}
public function loadNextImage() : void {
// Increment the image
_imageIndex++;
// If we've reached the end of the array, start over
if (_imageIndex >= images.length) {
_imageIndex = 0;
}
// Now get the image source from the array and tell the loader to load it
var imageSource : String = images[_imageIndex] as String;
loader.load(new URLRequest(imageSource));
}
// Next image to display
protected var _imageIndex : int = -1;
}
}
基本思想是保持指向要显示的下一个图像的整数指针。显示下一个图像时,递增此指针。如果超过图像源阵列的长度,请将其重置为0.
此指针从-1开始,因此第一次递增时它的值为0.
你应该能够轻松处理上一个案例 - 只需减少指针而不是检查它是否大于数组长度,检查它是否小于零并将其设置为images.length-1。 / p>