How to check an Android device is HDPI screen or MDPI screen?

Question

I want to check this to fetch different images by internet. How to do that?

Answer 1

You can check the screen density with:

switch (getResources().getDisplayMetrics().densityDpi) {
case DisplayMetrics.DENSITY_LOW:
    // ...
    break;
case DisplayMetrics.DENSITY_MEDIUM:
    // ...
    break;
case DisplayMetrics.DENSITY_HIGH:
    // ...
    break;
case DisplayMetrics.DENSITY_XHIGH:
    // ...
    break;
}

EDIT Be aware that as Android evolves, other values should be included in the switch cases. As of this edit, this includes DisplayMetrics.DENSITY_TV and DisplayMetrics.DENSITY_XXHIGH. Consult the docs for the latest info; I'm not going to bother maintaining this answer.