获取鸿蒙手机屏幕的宽高

DevEco Studio 版本：DevEco Studio NEXT Developer Preview2
HarmonyOS API 版本：4.1.0(11)

获取鸿蒙手机屏幕的宽高

DeviceUtil.ets：

/*
 * Copyright (c) 2022 Huawei Device Co., Ltd.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import { display } from "@kit.ArkUI";

export class DeviceUtil {
  private static width = 0;
  private static widthPx = 0;
  private static height = 0;
  private static heightPx = 0;

  public static getDisplayWidth(): number {
    if (DeviceUtil.width == 0) {
      DeviceUtil.setupDisplaySize();
    }
    return DeviceUtil.width;
  }

  public static getDisplayWidthPx(): number {
    if (DeviceUtil.widthPx == 0) {
      DeviceUtil.setupDisplaySize();
    }
    return DeviceUtil.widthPx;
  }

  public static getDisplayHeight(): number {
    if (DeviceUtil.height == 0) {
      DeviceUtil.setupDisplaySize();
    }
    return DeviceUtil.height;
  }

  public static getDisplayHeightPx(): number {
    if (DeviceUtil.heightPx == 0) {
      DeviceUtil.setupDisplaySize();
    }
    return DeviceUtil.heightPx;
  }

  private static setupDisplaySize() {
    let width = display.getDefaultDisplaySync().width;
    let height = display.getDefaultDisplaySync().height;
    DeviceUtil.widthPx = width;
    DeviceUtil.width = px2vp(width);
    DeviceUtil.heightPx = height;
    DeviceUtil.height = px2vp(height);
  }
}

参考

https://segmentfault.com/q/1010000044715976