Adding Data Store implementations for Android and normal Java

java/src/com/zerotier/one/AndroidFileProvider.java

@@ -0,0 +1,40 @@
+package com.zerotier.one;
+
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.IOException;
+
+import android.content.Context;
+
+public class AndroidFileProvider implements DataStoreFileProvider {
+	Context _ctx;
+		
+	AndroidFileProvider(Context ctx) {
+		this._ctx = ctx;
+	}
+
+	@Override
+	public FileInputStream getInputFileStream(String name)
+			throws FileNotFoundException {
+		// TODO Auto-generated method stub
+		return _ctx.openFileInput(name);
+	}
+
+	@Override
+	public FileOutputStream getOutputFileStream(String name)
+			throws FileNotFoundException {
+		// TODO Auto-generated method stub
+		return _ctx.openFileOutput(name, Context.MODE_PRIVATE);
+	}
+
+	@Override
+	public void deleteFile(String name) throws IOException {
+		boolean success = _ctx.deleteFile(name);
+		if(!success)
+		{
+			throw new IOException("Unable to delete file.");
+		}
+	}
+
+}