checkConfig () { // 检查配置有冲突的修正过来
    checkLayout(this.layout)
    this.txtLen = _getTxtWidth(this.context, '涨', this.layout.digit.font, this.layout.digit.pixel)
    this.timeLen = _getTxtWidth(this.context, '15:30', this.layout.digit.font, this.layout.digit.pixel)
    this.volLen = _getTxtWidth(this.context, '888888', this.layout.digit.font, this.layout.digit.pixel)