Java tutorial
//package com.java2s; import android.content.Context; import android.content.pm.PackageManager; import android.os.Environment; import android.os.StatFs; import android.text.format.Formatter; import java.io.*; public class Main { public static String getInternalMemory(Context context) { File path = Environment.getDataDirectory(); StatFs stat = new StatFs(path.getPath()); long blockSize = stat.getBlockSize(); long availableBlocks = stat.getAvailableBlocks(); return Formatter.formatFileSize(context, availableBlocks * blockSize); } public static String getDataDirectory(Context context) throws IOException { try { return context.getPackageManager().getPackageInfo(context.getPackageName(), 0).applicationInfo.dataDir; } catch (PackageManager.NameNotFoundException nnfe) { throw new IOException("Cannot access to data directory", nnfe); } } }