实现页面隐私模式鸿蒙示例代码

Button() {
          Text('开启隐藏');
        }
        .width(80)
        .height(60)
        .onClick(() => {
          let isPrivacyMode: boolean = true;
          try {
            window.getLastWindow(getContext(), (err: BusinessError, data) => {
              const errCode = err.code;
              if (errCode) {
                return;
              }
              let promise = data.setWindowPrivacyMode(isPrivacyMode);
              promise.then(() => {
                this.message = '隐私模式';
                hilog.info(0x0000, 'testTag', '已成功将窗口设置为隐私模式.');
              }).catch((err: BusinessError) => {
                hilog.error(0x0000, 'testTag', 'Failed to set the window to privacy mode. Cause: ' + JSON.stringify(err));
              });
            });
          } catch (exception) {
            hilog.error(0x0000, 'testTag', 'Failed to set the window to privacy mode. Cause:' + JSON.stringify(exception));
          }
        });
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