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。

这应该有用。

DisplayMetrics dm = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(dm);
int width = dm.widthPixels; //320
int height = dm.heightPixels; //480

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";
}

试试这个:

DisplayMetrics dm = context.getResources().getDisplayMetrics();
int densityDpi = dm.densityDpi;

在Android中，你可以得到这样的屏幕密度:

public static String getScreenDensity(Context context)
{
    String density;
    switch (context.getResources().getDisplayMetrics().densityDpi)
    {
        case DisplayMetrics.DENSITY_LOW:
            density = "LDPI";
            break;
        case DisplayMetrics.DENSITY_140:
            density = "LDPI - MDPI";
            break;
        case DisplayMetrics.DENSITY_MEDIUM:
            density = "MDPI";
            break;
        case DisplayMetrics.DENSITY_180:
        case DisplayMetrics.DENSITY_200:
        case DisplayMetrics.DENSITY_220:
            density = "MDPI - HDPI";
            break;
        case DisplayMetrics.DENSITY_HIGH:
            density = "HDPI";
            break;
        case DisplayMetrics.DENSITY_260:
        case DisplayMetrics.DENSITY_280:
        case DisplayMetrics.DENSITY_300:
            density = "HDPI - XHDPI";
            break;
        case DisplayMetrics.DENSITY_XHIGH:
            density = "XHDPI";
            break;
        case DisplayMetrics.DENSITY_340:
        case DisplayMetrics.DENSITY_360:
        case DisplayMetrics.DENSITY_400:
        case DisplayMetrics.DENSITY_420:
        case DisplayMetrics.DENSITY_440:
            density = "XHDPI - XXHDPI";
            break;
        case DisplayMetrics.DENSITY_XXHIGH:
            density = "XXHDPI";
            break;
        case DisplayMetrics.DENSITY_560:
        case DisplayMetrics.DENSITY_600:
            density = "XXHDPI - XXXHDPI";
            break;
        case DisplayMetrics.DENSITY_XXXHIGH:
            density = "XXXHDPI";
            break;
        case DisplayMetrics.DENSITY_TV:
            density = "TVDPI";
            break;
        default:
            density = "UNKNOWN";
            break;
    }

    return density;
}

在Kotlin中是这样的:

fun getScreenDensity(context: Context): String {
    val density: String
    when (context.resources.displayMetrics.densityDpi) {
        DisplayMetrics.DENSITY_LOW -> density = "LDPI"
        DisplayMetrics.DENSITY_140 -> density = "LDPI - MDPI"
        DisplayMetrics.DENSITY_MEDIUM -> density = "MDPI"
        DisplayMetrics.DENSITY_180, DisplayMetrics.DENSITY_200, DisplayMetrics.DENSITY_220 -> density = "MDPI - HDPI"
        DisplayMetrics.DENSITY_HIGH -> density = "HDPI"
        DisplayMetrics.DENSITY_260, DisplayMetrics.DENSITY_280, DisplayMetrics.DENSITY_300 -> density = "HDPI - XHDPI"
        DisplayMetrics.DENSITY_XHIGH -> density = "XHDPI"
        DisplayMetrics.DENSITY_340, DisplayMetrics.DENSITY_360, DisplayMetrics.DENSITY_400, DisplayMetrics.DENSITY_420, DisplayMetrics.DENSITY_440 -> density =
            "XHDPI - XXHDPI"
        DisplayMetrics.DENSITY_XXHIGH -> density = "XXHDPI"
        DisplayMetrics.DENSITY_560, DisplayMetrics.DENSITY_600 -> density = "XXHDPI - XXXHDPI"
        DisplayMetrics.DENSITY_XXXHIGH -> density = "XXXHDPI"
        DisplayMetrics.DENSITY_TV -> density = "TVDPI"
        else -> density = "UNKNOWN"
    }

    return density
}

确保定期检查是否增加了新的密度。