Java tutorial
//package com.java2s; //License from project: Apache License import android.content.Context; import java.io.File; public class Main { public static final String SDK_SERVER_NAME = "sdk_server_config"; public static boolean isServerConfigExist(Context ctx) { if (ctx == null) { throw new IllegalArgumentException("Context can't null."); } String sdkServerFolder = getSDKServerFolder(ctx); return new File(sdkServerFolder, SDK_SERVER_NAME).exists(); } private static String getSDKServerFolder(Context ctx) { if (ctx == null) { return null; } String packageName = ctx.getPackageName(); if (packageName == null || packageName.length() <= 0) { return null; } File serverFolder = new File("/data/data/" + packageName + "/ECSDK_Msg"); if (!serverFolder.exists() && !serverFolder.mkdirs()) { return null; } return serverFolder.getAbsolutePath(); } }