How to detect the android screen size programmatically ( the 4 standard sizes)?

问题

I know there are 4 standard screen sizes for android :

xlarge,large, normal and small 

How to know the running device which screen size has from these 4 sizes ?

回答1:

int screenSize = getResources().getConfiguration().screenLayout &
        Configuration.SCREENLAYOUT_SIZE_MASK;

switch(screenSize) {
    case Configuration.SCREENLAYOUT_SIZE_LARGE:
        Toast.makeText(this, "Large screen",Toast.LENGTH_LONG).show();
        break;
    case Configuration.SCREENLAYOUT_SIZE_NORMAL:
        Toast.makeText(this, "Normal screen",Toast.LENGTH_LONG).show();
        break;
    case Configuration.SCREENLAYOUT_SIZE_SMALL:
        Toast.makeText(this, "Small screen",Toast.LENGTH_LONG).show();
        break;
    default:
        Toast.makeText(this, "Screen size is neither large, normal or small" , Toast.LENGTH_LONG).show();
}

来源：https://stackoverflow.com/questions/17612048/how-to-detect-the-android-screen-size-programmatically-the-4-standard-sizes