egret 示例实战六：延迟操作，实现打字效果

1.建立TextField对象

/**建立文本对象 */
        this.txt = new egret.TextField();
        this.txt.size = 24;
        this.txt.textColor = 0xffffff;
        this.txt.lineSpacing = 10;
        this.txt.x = 30;
        this.txt.y = 100;
        // this.txt.text = '1111';
        this.addChild(this.txt);
        this.isComplete = true;

2.点击舞台时调用延迟方法

Main.instance.stage.addEventListener(egret.TouchEvent.TOUCH_TAP,this.onTap,this);

    private num:number = 1;
    private backFun(){
        this.isComplete = true;
        this.num++;
    }
    private onTap(){
        if(this.isComplete){
            this.isComplete = false;
            this.txtEffect(this.txt,this.num+',哈哈哈噢噢噢噢哈哈哈哈单独的啦啦啦啦
',150,this.backFun);
        }   
    }

3.文字打字效果

    /**
     * obj  文本对象
     * content  文本内容
     * interval 打字间隔时间
     */
    private txtEffect(obj,content:string = '',interval:number = 200,backFun:Function = null ){
        let strArr = content.split('');
        let self = this;
        for(let i = 0;i<strArr.length;i++){
            setTimeout(function(){
                obj.appendText(strArr[i]);
                if(i == strArr.length - 1 && backFun != null){
                    self.backFun();
                }
            },interval*i);
        }
    }

4.效果