解决Row容器空间不足时子组件消失的问题

问题现象
在Row组件中放置两个Text组件，左侧Text（动态标题）需自适应宽度，空间不足时末尾省略显示（TextOverflow.Ellipsis），右侧Text（如(99)）需始终完整显示，但实际效果中，空间不足时左侧Text直接消失，而非显示省略号。

问题代码示例参考如下：

@Entry
@Component
struct Index {
@State title: string = '长标题文本长标题文本长标题文本';

build() {
Column() {
Row() {
Text(this.title)
.fontSize(17)
.fontWeight(500)
.maxLines(1)
.textOverflow({ overflow: TextOverflow.Ellipsis })
.textAlign(TextAlign.Center)
.onClick(() => {
this.title += '加加';
})

    Text('(99)')  
      .fontSize(17)  
      .fontWeight(500)  
      .maxLines(1)  
      .textOverflow({ overflow: TextOverflow.Ellipsis })  
      .textAlign(TextAlign.Start)  
      .displayPriority(2)  
  }  
  .justifyContent(FlexAlign.Center)  
  .width('100%')  
  .margin({ top: 280 })  
}  

}
}
问题效果预览：

点击放大

效果预览
点击放大

背景知识
displayPriority属性机制：当父容器空间不足时，系统按优先级隐藏子组件（值越小优先级越高），若某一优先级组件被隐藏，更低优先级的组件会全部被隐藏（即使空间足够），右侧Text设置displayPriority（低优先级），左侧未设置（默认0，高优先级），但隐藏逻辑导致左侧异常消失。
弹性布局压缩规则：Row基于Flex布局，子组件默认flexShrink:0（禁止压缩），文本省略需同时满足：设置maxLines和textOverflow，组件flexShrink:1(允许压缩)且有明确宽度约束。
问题定位
隐藏机制冲突：右侧displayPriority激活了隐藏逻辑，空间不足时触发低优先级组件隐藏链，导致左侧被连带隐藏，左侧虽设置省略样式，但flexShrink默认为0，未触发压缩流程，直接跳过省略进入隐藏。
布局约束缺失：左侧Text未明确允许压缩，右侧未禁止压缩，两者在空间争夺中行为未定义，justifyContent(FlexAlign.Center)强制居中分配空间，加剧宽度计算冲突。
分析结论
根本矛盾在于：displayPriority的组件级隐藏机制与textOverflow的文本级压缩机制互斥，当空间不足时，系统优先触发displayPriority的隐藏逻辑，而非文本压缩。

修改建议
核心方案：弃用displayPriority，改用弹性压缩控制。

@Entry
@Component
struct LongText {
@State title: string = '长标题文本长标题文本长标题文本';

build() {
Column() {
// 关键修改1：使用Flex替代Row，明确弹性规则
Flex({
direction: FlexDirection.Row,
alignItems: ItemAlign.Center,
justifyContent: FlexAlign.Start // 左对齐
}) {
Text(this.title)
.fontSize(17)
.fontWeight(500)
.maxLines(1)
.textOverflow({ overflow: TextOverflow.Ellipsis })
.flexShrink(1) // 关键修改2：允许压缩
.onClick(() => {
this.title += '追加文本';
})

    Text('(99)')  
      .fontSize(17)  
      .fontWeight(500)  
      .flexShrink(0) // 关键修改3：禁止压缩  
  }  
  .width('100%')  
  .margin({ top: 280 })  
}  

}
}
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