HarmonyOS 鸿蒙Next 有没有办法能计算Text文本的行数

import measure from '@ohos.measure'
[@Entry](/user/Entry)
[@Component](/user/Component)
struct MeasurePage {
  [@State](/user/State) rawTitle: string = "1月16日，国务院新闻办公室举行新闻发布会，介绍2024年春运形势及工作安排。从2月9日（除夕）00：00到2月17日（正月初八）24：00，免费9天。1月16日，国务院新闻办公室举行新闻发布会，介绍2024年春运形势及工作安排"
  // [@State](/user/State) rawTitle: string = "1月16日，国务院新闻办公室举行新闻发布会"
  [@State](/user/State) title: string = this.rawTitle //
  [@State](/user/State) suffixStr: string = ""
  expanded: Boolean = true
  titleWidth: number = 350
  needProcess: boolean = true
  ellipsis: string = "..."
  EXPAND_STR: string = "展开"
  COLLAPSE_STR: string = "收起"
  MAX_LINES: number =2;
  fontSize:number = 16
aboutToAppear(): void {
this.process();
}
process(): void {
if (this.expanded) {
this.collapseText();
} else {
this.expandText();
}
}
expandText(): void {
console.log('testTag: ’ + this.needProcess);
if (this.needProcess) {
this.suffixStr = this.COLLAPSE_STR; //收起
this.expanded = true;
this.title = this.rawTitle;
}
}
collapseText(): void {
if (!this.needProcess) {
return;
}
let titleSize : SizeOptions = measure.measureTextSize({
textContent: this.rawTitle,
constraintWidth: this.titleWidth,
fontSize: this.fontSize
})
let twoLineSize : SizeOptions = measure.measureTextSize({
textContent: this.rawTitle,
constraintWidth: this.titleWidth,
fontSize: this.fontSize,
maxLines: this.MAX_LINES
})
//文本未超过限制行数，不进行展开、收起处理
if ((titleSize.height as number) == (twoLineSize.height as number)) {
this.needProcess = false;
return;
}
console.log(‘test row height:’ + titleSize.height)
console.log(‘test twoLineSize height:’ + twoLineSize.height)
let clipTitle: string = this.rawTitle
this.suffixStr = this.EXPAND_STR;
while ((titleSize.height as number) > (twoLineSize.height as number)) {
this.expanded = true;
// 可以修改其他计算算法提高性能
clipTitle = clipTitle.substring(0, clipTitle.length - 1);
titleSize = measure.measureTextSize({
// textContent: clipTitle + this.ellipsis + this.suffixStr,
textContent: clipTitle + this.ellipsis ,
constraintWidth: this.titleWidth,
fontSize: this.fontSize
})
console.log(“test while clipTitle:” + clipTitle)
console.log(“test while clipTitle height:” + titleSize.height)
}
console.log(“test clipTitle:” + clipTitle)
this.title = clipTitle + this.ellipsis
this.expanded = false;
}
build() {
Row() {
Column() {
Text(){
Span(this.title)
}
.fontSize(this.fontSize)
.id(“title”)
.width(this.titleWidth)
    <span class="hljs-keyword">if</span> (<span class="hljs-keyword">this</span>.needProcess) {
      Text(<span class="hljs-keyword">this</span>.suffixStr)
        .fontColor(Color.Orange)
        .onClick((event) =&gt; {
          <span class="hljs-keyword">this</span>.process();
        })
    }
  }
  .width(<span class="hljs-string">'100%'</span>)
  .alignItems(HorizontalAlign.Start)
}
.height(<span class="hljs-string">'100%'</span>)
}
}
<button style="position: absolute; padding: 4px 8px 0px; cursor: pointer; top: 8px; right: 8px; font-size: 14px;">复制</button>