// 竖屏文件的输出路劲
private final static String rootPathPort = "/Users/Sing/Desktop/res/values-port-{0}dpi-{1}x{2}/";
// 横屏文件的输出路劲
private final static String rootPathLand = "/Users/Sing/Desktop/res/values-land-{0}dpi-{1}x{2}/";
// 水平方向（X）的值
private final static String templateX = "    <dimen name=\"dp_{0}_x\">{1}dp</dimen>\n";
// 垂直方向（Y）的值
private final static String templateY = "    <dimen name=\"dp_{0}_y\">{1}dp</dimen>\n";
// 默认模板信息，及参照尺寸，这里用的是1280x720 320dpi
private static int defaultDpi = 320;
private static int defaultWidth = 720;
private static int defaultHeight = 1280;
private static double defaultScale = 2.0;

// 将double类型的数据保留两位小数
public static String twoDemal(double num) {
	DecimalFormat dFormat = new DecimalFormat("##0.00");
	String result = dFormat.format(num);
	return result;
}

// 传入宽、高、DPI生成
public static void makeString(int w, int h, int dpi) {
	makeValue(w,h,dpi,0);// 竖屏X
	makeValue(w,h,dpi,1);// 竖屏Y
	makeValue(w,h,dpi,2);// 横屏X
	makeValue(w,h,dpi,3);// 横屏Y 
}

// type 0-3 分别为 竖屏X、竖屏Y、横屏X、横屏Y
private static void makeValue(int w, int h, int dpi, int type) {
	double scale = ((double) dpi / 160); // 缩放比例
	double totalWidthDp = defaultWidth / defaultScale; // 机型水平方向总共有多少个DP
	double totalHeightDp = defaultHeight / defaultScale; // 机型垂直方向总共有多少个DP
 
	double portWidthValue = (double) w / scale / totalWidthDp; // 竖屏情况下，参考模板水平方向(X) 每1dp对应的适配机型的值
	double portHeightValue = (double) h / scale / totalHeightDp;// 竖屏情况下，参考模板垂直方向(Y) 每1dp对应的适配机型的值
	double landWidthValue = ((double) h / w) * portWidthValue;// 横屏情况下，参考模板水平方向(X) 每1dp对应的适配机型的值
	double landHeightValue = ((double) w / h) * portHeightValue;// 横屏情况下，参考模板垂直方向(Y) 每1dp对应的适配机型的值

	String rootPath = "";// 实际输出的路径
	File layFile = null;
	String fileName = "";
		
	StringBuffer sb = new StringBuffer();
	sb.append("<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");// 文件头
	sb.append("<resources>\n");// 文件头

	if (type == 0) { // 竖屏 X
		for (int i = 1; i <= 200; i++) {
			sb.append(templateX.replace("{0}", i + "").replace("{1}", twoDemal(portWidthValue * i) + ""));
		}
		rootPath = rootPathPort;
		fileName = "dimens_x.xml";
	} else if (type == 1) {// 竖屏 Y
		for (int i = 1; i <= 200; i++) {
			sb.append(templateY.replace("{0}", i + "").replace("{1}", twoDemal(portHeightValue * i) + ""));
		}
		rootPath = rootPathPort;
		fileName = "dimens_y.xml";
	} else if (type == 2) {// 横屏 X
		for (int i = 1; i <= 200; i++) {
			sb.append(templateX.replace("{0}", i + "").replace("{1}", twoDemal(landWidthValue * i) + ""));
		}
		fileName = "dimens_x.xml";
		rootPath = rootPathLand;
	} else if (type == 3) {// 横屏 Y
		for (int i = 1; i <= 200; i++) {
			sb.append(templateY.replace("{0}", i + "").replace("{1}", twoDemal(landHeightValue * i) + ""));
		} 
		rootPath = rootPathLand;
		fileName = "dimens_y.xml";
	}
	sb.append("</resources>");// 文件尾

	String path = rootPath.replace("{0}", dpi + "").replace("{1}", h + "").replace("{2}", w + "");
	File rootFile = new File(path);
	if (!rootFile.exists()) {
		rootFile.mkdirs();
	}
	layFile = new File(path + fileName);
	try {
		PrintWriter pw = new PrintWriter(new FileOutputStream(layFile));
		pw.print(sb.toString());
		pw.close();
	} catch (FileNotFoundException e) {
		e.printStackTrace();
	}
}   

// 入口在这里，想生成什么机型就传入什么机型的信息，
public static void main(String[] args) {
	makeString(720, 1280, 320);
	makeString(1080, 1920, 480);
	// 这里可以输出你想要适配的机型
}