Tango: zipping obj files, exporting in Export sub directory

app/android/src/com/introlab/rtabmap/Util.java

@@ -0,0 +1,56 @@
+package com.introlab.rtabmap;
+
+import java.io.BufferedInputStream;
+import java.io.BufferedOutputStream;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.util.zip.ZipEntry;
+import java.util.zip.ZipOutputStream;
+
+import android.content.Context;
+import android.net.ConnectivityManager;
+import android.net.NetworkInfo;
+import android.util.Log;
+
+public class Util {
+	
+	public static final int ZIP_BUFFER_SIZE = 1<<20; // 1MB
+
+	public static void zip(String file, String zipFile) throws IOException {
+		Log.i(RTABMapActivity.TAG, "Zipping " + file +" to " + zipFile);
+		String[] files = new String[1];
+		files[0] = file;
+		zip(files, zipFile);
+	}
+
+	public static void zip(String[] files, String zipFile) throws IOException {
+		Log.i(RTABMapActivity.TAG, "Zipping " + String.valueOf(files.length) +" files to " + zipFile);
+		BufferedInputStream origin = null;
+		ZipOutputStream out = new ZipOutputStream(new BufferedOutputStream(new FileOutputStream(zipFile)));
+		try { 
+			byte data[] = new byte[ZIP_BUFFER_SIZE];
+
+			for (int i = 0; i < files.length; i++) {
+				FileInputStream fi = new FileInputStream(files[i]);    
+				origin = new BufferedInputStream(fi, ZIP_BUFFER_SIZE);
+				try {
+					ZipEntry entry = new ZipEntry(files[i].substring(files[i].lastIndexOf("/") + 1));
+					out.putNextEntry(entry);
+					int count;
+					while ((count = origin.read(data, 0, ZIP_BUFFER_SIZE)) != -1) {
+						out.write(data, 0, count);
+					}
+				}
+				finally {
+					origin.close();
+				}
+			}
+		}
+		finally {
+			out.close();
+		}
+	}
+
+	
+}