DisplayUtils

/**
 * 屏幕的尺寸及不同单位之间的转换
 * Created by travis on 2016/1/21.
 */
public class DisplayUtils
{
    /**
     * 屏幕的宽度
     * @param context
     * @return
     */
    public static final int screenWidth(Context context){
        return context.getResources().getDisplayMetrics().widthPixels;
    }

    /**
     * 屏幕的高度
     * @param context
     * @return
     */
    public static final int screenHeight(Context context){
        return context.getResources().getDisplayMetrics().heightPixels;
    }

    public static final int dp2px(Context context, float dp)
    {
        float scale = context.getResources().getDisplayMetrics().density;
        return (int) (dp * scale + 0.5F);
    }

    public static final int sp2px(Context context, float sp)
    {
        float scale = context.getResources().getDisplayMetrics().scaledDensity;
        return (int) (sp * scale + 0.5F);
    }

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