Question

I want to write a function like this

public boolean isThisScreenWithHdpiDensity(){
    return true/false;
}

but I do not know how to calculate this at run time programmatic-ally

Answer 1

Use this inside your function:

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;
}