Blundell的回答是静态帮助方法:

private static String getDensityName(Context context) {
    float density = context.getResources().getDisplayMetrics().density;
    if (density >= 4.0) {
        return "xxxhdpi";
    }
    if (density >= 3.0) {
        return "xxhdpi";
    }
    if (density >= 2.0) {
        return "xhdpi";
    }
    if (density >= 1.5) {
        return "hdpi";
    }
    if (density >= 1.0) {
        return "mdpi";
    }
    return "ldpi";
}

另一个答案是:

/**
* @return "ldpi", "mdpi", "hdpi", "xhdpi", "xhdpi", "xxhdpi", "xxxhdpi", "tvdpi", or "unknown".
*/
public static String getDensityBucket(Resources resources) {
    switch (resources.getDisplayMetrics().densityDpi) {
        case DisplayMetrics.DENSITY_LOW:
            return "ldpi";
        case DisplayMetrics.DENSITY_MEDIUM:
            return "mdpi";
        case DisplayMetrics.DENSITY_HIGH:
            return "hdpi";
        case DisplayMetrics.DENSITY_XHIGH:
            return "xhdpi";
        case DisplayMetrics.DENSITY_XXHIGH:
            return "xxhdpi";
        case DisplayMetrics.DENSITY_XXXHIGH:
            return "xxxhdpi";
        case DisplayMetrics.DENSITY_TV:
            return "tvdpi";
        default:
            return "unknown";
    }
}

这也是可行的:

 getResources().getDisplayMetrics().density;

这将给你:

0.75 ldpi

1.0米

1.5 hdpi

2.0 - xhdpi

3.0 - xxhdpi

4.0 - xxxhdpi

裁判:密度

ref 2

科特林

LocalContext.current.resources.displayMetrics.density

得到密度乘数。

试试这个…

在kotlin

fun determineScreenDensityCode(): String {
      return when (resources.displayMetrics.densityDpi) {
         DisplayMetrics.DENSITY_LOW -> "ldpi"
         DisplayMetrics.DENSITY_MEDIUM -> "mdpi"
         DisplayMetrics.DENSITY_HIGH -> "hdpi"
         DisplayMetrics.DENSITY_XHIGH, DisplayMetrics.DENSITY_280 -> "xhdpi"
         DisplayMetrics.DENSITY_XXHIGH, DisplayMetrics.DENSITY_360, DisplayMetrics.DENSITY_400, DisplayMetrics.DENSITY_420 -> "xxhdpi"
         DisplayMetrics.DENSITY_XXXHIGH, DisplayMetrics.DENSITY_560 -> "xxxhdpi"
         else -> "Unknown code ${resources.displayMetrics.densityDpi}"
     }
}

你可以通过println("density: ${determineScreenDensityCode()}")调用 输出为System。输出:密度:xxxhdpi

DisplayMetrics metrics = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(metrics);

switch(metrics.densityDpi) {
     case DisplayMetrics.DENSITY_LOW:
         break;

     case DisplayMetrics.DENSITY_MEDIUM:
         break;

     case DisplayMetrics.DENSITY_HIGH:
         break;
}

这将在API级别4和更高的级别上工作。