HarmonyOS 禁止录屏截屏？

Question

需要在有密码的页面禁止录屏截屏。有没有API.

Answer 1

可以参考以下demo来实现动态禁止截屏录屏。

首先需要在module.json5文件中声明需要使用的 ohos.permission.PRIVACY\_WINDOW 权限

1：创建windowUtils文件

//windowUtils 文件
import window from '@ohos.window';
import common from '@ohos.app.ability.common';

export class windowUtils {
  static setWindowPrivacyModeInPage(context: common.UIAbilityContext,isFlag: boolean) {
    window.getLastWindow(context).then((lastWindow)=>{
      lastWindow.setWindowPrivacyMode(isFlag);
    })
  }
}

2：EntryAbility

//EAbility文件中

onWindowStageCreate(windowStage: window.WindowStage): void {
  let windowClass: window.Window = windowStage.getMainWindowSync();
  // 获取应用主窗口

  AppStorage.setOrCreate("windowClass",windowClass);
}

3：Index文件中

import { window } from '@kit.ArkUI';
import { windowUtils } from '../component/windowUtils';
import { common } from '@kit.AbilityKit';

@Entry
@Component
struct Index {

  private windowClass = AppStorage.get("windowClass") as window.Window
  @State message: string = 'Hello World';

  aboutToAppear(): void {
    try {
      //开启固定态输入法窗口软键盘高度变化的监听
      this.windowClass.on('keyboardHeightChange', (data) => {
        console.info('Succeeded in enabling the listener for keyboard height changes. Data: ' + JSON.stringify(data));

        //键盘弹出，截止截屏
        if(data>0){
          windowUtils.setWindowPrivacyModeInPage(getContext(this) as common.UIAbilityContext, true);
        }
        else {
          windowUtils.setWindowPrivacyModeInPage(getContext(this) as common.UIAbilityContext, false);
        }

      });
    } catch (exception) {
      console.error('Failed to enable the listener for keyboard height changes. Cause: ' + JSON.stringify(exception));
    }

  }
  build() {
  }
}