Java tutorial
//package com.java2s; /* * Copyright (C) 2012 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ import android.annotation.SuppressLint; import android.os.Build; import android.os.StatFs; import java.io.File; public class Main { /** * Check how much usable space is available at a given path. * * @param path The path to check * @return The space available in bytes */ @SuppressLint("NewApi") public static long getUsableSpace(File path) { if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.GINGERBREAD) { return path.getUsableSpace(); } final StatFs stats = new StatFs(path.getPath()); return (long) stats.getBlockSize() * (long) stats.getAvailableBlocks(); } }