dip与px单位之间转换

//转换dip为px
public static int convertDIP2PX(Context context, int dip) {
	float scale = context.getResources().getDisplayMetrics().density;
	return (int)(dip*scale + 0.5f*(dip>=0?1:-1));
}

//转换px为dip
public static int convertPX2DIP(Context context, int px) {
	float scale = context.getResources().getDisplayMetrics().density;
	return (int)(px/scale + 0.5f*(px>=0?1:-1));
}