RTL support api level < 15

(RTL) Right to Left support 4.2 above. But I need support API 15, platform is 4.0. 

Platform Version	API Level	VERSION_CODE	Notes
Android 6.0	23	M	Platform Highlights
Android 5.1	22	LOLLIPOP_MR1	Platform Highlights
Android 5.0	21	LOLLIPOP
Android 4.4W	20	KITKAT_WATCH	KitKat for Wearables Only
Android 4.4	19	KITKAT	Platform Highlights
Android 4.3	18	JELLY_BEAN_MR2	Platform Highlights
Android 4.2, 4.2.2	17	JELLY_BEAN_MR1	Platform Highlights
Android 4.1, 4.1.1	16	JELLY_BEAN	Platform Highlights
Android 4.0.3, 4.0.4	15	ICE_CREAM_SANDWICH_MR1	Platform Highlights
Android 4.0, 4.0.1, 4.0.2	14	ICE_CREAM_SANDWICH
Android 3.2	13	HONEYCOMB_MR2
Android 3.1.x	12	HONEYCOMB_MR1	Platform Highlights
Android 3.0.x	11	HONEYCOMB	Platform Highlights
Android 2.3.4 Android 2.3.3	10	GINGERBREAD_MR1	Platform Highlights
Android 2.3.2 Android 2.3.1 Android 2.3	9	GINGERBREAD
Android 2.2.x	8	FROYO	Platform Highlights
Android 2.1.x	7	ECLAIR_MR1	Platform Highlights
Android 2.0.1	6	ECLAIR_0_1
Android 2.0	5	ECLAIR
Android 1.6	4	DONUT	Platform Highlights
Android 1.5	3	CUPCAKE	Platform Highlights
Android 1.1	2	BASE_1_1
Android 1.0	1	BASE

I need change layout file like this

<LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="bottom"
        android:gravity="end"
        android:paddingBottom="14dip"
        android:paddingLeft="16dip"
        android:paddingRight="16dip" >

transfer to this

<LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="bottom"
        android:gravity="end"
        android:paddingBottom="14dip"
        android:paddingEnd="16dip"
        android:paddingLeft="16dip"
        android:paddingRight="16dip"
        android:paddingStart="16dip" >

the first thought is use Notepad++, but there are different dimension, can do replace all. so I wrote a program to solve this. try to use the NIO.2 in java7

 

here is my code.

import java.io.IOException;
import java.nio.charset.Charset;
import java.nio.file.FileVisitResult;
import java.nio.file.FileVisitor;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.nio.file.attribute.BasicFileAttributes;
import java.util.ArrayList;
import java.util.List;

public class FilterRTL {
	public static String pathStr = "E:\\workspace\\Pro\\res";
	private static int i = 0;

	public static void main(String[] args) throws IOException {
		Path path = Paths.get(pathStr);
		Path absPath = path.toAbsolutePath();
		i++;
		Files.walkFileTree(absPath, new FileVisitor<Path>() {

			@Override
			public FileVisitResult postVisitDirectory(Path dir, IOException exc) throws IOException {
				return FileVisitResult.CONTINUE;
			}

			@Override
			public FileVisitResult preVisitDirectory(Path dir, BasicFileAttributes attrs) throws IOException {

				return FileVisitResult.CONTINUE;
			}

			@Override
			public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {
				if (file.toString().endsWith(".xml")) {
					List<String> lines = Files.readAllLines(file, Charset.forName("utf-8"));
					List<String> results = new ArrayList<>();
					for (String it : lines) {
						results.add(it);
						//android:layout_marginStart="8dip"
						//android:layout_marginEnd="8dip"
						//android:paddingStart="5dp"
						//android:paddingEnd="5dp"
						//android:layout_alignParentStart
						//android:layout_alignParentEnd
						if (it.contains("android:layout_marginStart")) {
							String[] data = it.split("\"");
							results.add("android:layout_marginLeft=\""+data[1]+"\"");
						}else if (it.contains("android:layout_marginEnd")) {
							String[] data = it.split("\"");
							results.add("android:layout_marginRight=\""+data[1]+"\"");
						}else if (it.contains("android:paddingStart")) {
							String[] data = it.split("\"");
							results.add("android:paddingLeft=\""+data[1]+"\"");
						}else if (it.contains("android:paddingEnd")) {
							String[] data = it.split("\"");
							results.add("android:paddingRight=\""+data[1]+"\"");
						}else if (it.contains("android:layout_alignParentStart")) {
							String[] data = it.split("\"");
							results.add("android:layout_alignParentLeft=\""+data[1]+"\"");
						}else if (it.contains("android:layout_alignParentEnd")) {
							String[] data = it.split("\"");
							results.add("android:layout_alignParentRight=\""+data[1]+"\"");
						}
						System.out.println(it);
					}
					Files.write(file, results, Charset.forName("utf-8"));
					i++;
				}
				return FileVisitResult.CONTINUE;
			}

			@Override
			public FileVisitResult visitFileFailed(Path file, IOException exc) throws IOException {
				return FileVisitResult.CONTINUE;
			}
		});
		System.out.println(i);
	}
}

I'm fish, I'm on.