在HarmonyOS NEXT开发中@Entry页面设置透明背景怎么处理？

Question

在HarmonyOS NEXT开发中@Entry页面设置透明背景怎么处理？

Answer 1

router路由模式请参考下面demo：

// Page1.ets 
import window from '@ohos.window'; 
 
@Entry 
@Component 
struct Page2 { 
  @State message: string = 'page Page2'; 
 
  onPageHide() { 
    console.log("pageHide") 
  } 
 
  build() { 
    Row() { 
      Column() { 
        Text(this.message) 
          .fontSize(50) 
          .fontWeight(FontWeight.Bold) 
        Button("pageB").onClick(() => { 
          let windowStege: window.WindowStage = AppStorage.get("windowStage") as window.WindowStage; 
          windowStege.createSubWindow("hello", (err, win) => { 
            win.setUIContent('pages/Page2'); 
            win.showWindow(); 
          }) 
        }) 
      } 
      .width('100%') 
    } 
    .height('100%') 
    .backgroundColor(Color.Pink) 
  } 
} 
 
// Page2.ets 
import window from '@ohos.window'; 
 
@Entry 
@Component 
struct Index { 
  @State message: string = 'page Index'; 
 
  aboutToAppear() { 
    window.findWindow("hello").setWindowBackgroundColor("#00000000") 
  } 
 
  onBackPress() { 
    window.findWindow("hello").destroyWindow().then((res) => { 
      console.log("destroyWindow success") 
    }).catch(() => { 
      console.log("destroyWindow fail") 
    }) 
    return true 
  } 
 
  build() { 
    Row() { 
      Column() { 
        Text(this.message) 
          .fontSize(50) 
          .fontWeight(FontWeight.Bold) 
      } 
      .width('100%') 
      .backgroundColor(Color.Red) 
    } 
    .alignItems(VerticalAlign.Top) 
    .height('100%') 
    .backgroundColor("#80ffffff") 
  } 
} 
 
//注意需要在EntryAbility里面添加关键代码那一行 
onWindowStageCreate(windowStage: window.WindowStage): void { 
  // Main window is created, set main page for this ability 
  hilog.info(0x0000, 'testTag', '%{public}s', 'Ability onWindowStageCreate'); 
 
  windowStage.loadContent('pages/Page231206095213071', (err, data) => { 
  if (err.code) { 
  hilog.error(0x0000, 'testTag', 'Failed to load the content. Cause: %{public}s', JSON.stringify(err) ?? ''); 
  return; 
} 
AppStorage.setAndLink("windowStage", windowStage);// 关键代码 
hilog.info(0x0000, 'testTag', 'Succeeded in loading the content. Data: %{public}s', JSON.stringify(data) ?? ''); 
}); 
}

AppStorage.setAndLink(“windowStage”, windowStage);// 关键代码 只需要看这行的关键代码就可以了，这个是配置windowStage.loadContent(‘pages/page1’) ，这个demo是page1跳转page2,page2是透明的效果