scheduleOnce时出错,CCScheduler#scheduleSelector. Selector already scheduled. Updating interval from: 0 to 0"

delayDisplay:function(){
    this.scheduleOnce(this.displayNumber,1);
},

displayNumber:function(){
    this.delayDisplay();
}

改成以下：

this.scheduleOnce(function(){
        this.displayNumber();
},1);

原文：https://www.cnblogs.com/kingBook/p/10946801.html