Question

flash ActionScript3.0的问题

package {
import flash.display.Sprite;
import flash.display.Graphics;
import flash.media.Sound;
import flash.media.SoundChannel;
import flash.media.SoundMixer;
import flash.net.URLRequest;
import flash.events.Event;
import flash.utils.ByteArray;

public class wave extends Sprite {
private var sound:Sound;
private var ba:ByteArray;
private var num:Number;
private var sound_channel:SoundChannel;
private var t:Number=0;

}
public function wave() {
sound=new Sound();
ba=new ByteArray();
sound.load(new URLRequest("test.mp3"));
sound_channel=sound.play();
this.addEventListener(Event.ENTER_FRAME,spectrum);

}
private function spectrum(event:Event) {
graphics.clear();
drawFunction(1,0xbb00aa);
}

private function drawFunction(thickness:Number,color:Number) {
graphics.lineStyle(thickness,color,100);
SoundMixer.computeSpectrum(ba,false,0);
for (var i=30; i<=stage.stageWidth-30; i++) {
num=ba.readFloat()*360;
if (i>30) {
var fi=stage.stageHeight/2+num;
graphics.lineTo(i,fi);
} else {
graphics.moveTo(30,stage.stageHeight/2+num);
}
}
}
}

编译器报错：1013: private 属性只能用于类属性定义。 请问问题出现在哪里？

Answer 1

好傻的问题⋯⋯

Answer 2

其实你的错误只是微妙的笔误，看看下面还有问题不？

package {
import flash.display.Sprite;
import flash.display.Graphics;
import flash.media.Sound;
import flash.media.SoundChannel;
import flash.media.SoundMixer;
import flash.net.URLRequest;
import flash.events.Event;
import flash.utils.ByteArray;

public class wave extends Sprite {
private var sound:Sound;
private var ba:ByteArray;
private var num:Number;
private var sound_channel:SoundChannel;
private var t:Number=0;

public function wave() {
sound=new Sound();
ba=new ByteArray();
sound.load(new URLRequest("test.mp3"));
sound_channel=sound.play();
this.addEventListener(Event.ENTER_FRAME,spectrum);

}
private function spectrum(event:Event) {
graphics.clear();
drawFunction(1,0xbb00aa);
}

private function drawFunction(thickness:Number,color:Number) {
graphics.lineStyle(thickness,color,100);
SoundMixer.computeSpectrum(ba,false,0);
for (var i=30; i<=stage.stageWidth-30; i++) {
num=ba.readFloat()*360;
if (i>30) {
var fi=stage.stageHeight/2+num;
graphics.lineTo(i,fi);
} else {
graphics.moveTo(30,stage.stageHeight/2+num);
}
}
}
}
}

Answer 3

哥哥，你把类方法放到类外面了！！！弄回去