如何在Java中检测Retina显示器? [英] How do you detect a Retina Display in Java?

问题描述

如何检测用户在Java中是否具有视网膜显示?我已经知道使用 Toolkit.getDefaultToolkit().getDesktopProperty("apple.awt.contentScaleFactor")来检测比例因子，但是Java不允许我将返回的值转换为int.我想知道如何将其转换为int或另一种检测视网膜显示的方法.

How can I detect if a user has a retina display in Java? I am already aware of detecting the scale factor using Toolkit.getDefaultToolkit().getDesktopProperty("apple.awt.contentScaleFactor"), but java won't let me convert the returned value into an int. I'm wondering how I can convert that into an int, or another way to detect retina displays.

推荐答案

我将以这种方式获取值-

I would get the value this way -

public static boolean hasRetinaDisplay() {
  Object obj = Toolkit.getDefaultToolkit()
      .getDesktopProperty(
          "apple.awt.contentScaleFactor");
  if (obj instanceof Float) {
    Float f = (Float) obj;
    int scale = f.intValue();
    return (scale == 2); // 1 indicates a regular mac display.
  }
  return false;
}

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