dp、sp 与 px互转

import android.content.Context;

public class DisplayUtil {
    public static int dp2px(Context context, float value){
        float scale = context.getResources().getDisplayMetrics().density;
        return (int)(value*scale+0.5f);
    }
    
    public static int px2dp(Context context, float value){
        float scale=context.getResources().getDisplayMetrics().density;
        return (int)(value/scale+0.5f);
    }
    public static int sp2px(Context context, float value){
        float scale = context.getResources().getDisplayMetrics().scaledDensity;
        return (int)(value*scale+0.5f);
    }

    public static int px2sp(Context context, float value){
        float scale=context.getResources().getDisplayMetrics().scaledDensity;
        return (int)(value/scale+0.5f);
    }
}