package com.classic.android.utils;
import android.os.Environment;
import android.os.StatFs;
import android.support.annotation.NonNull;
import java.io.File;
/**
* 应用名称: BaseProject
* 包 名 称: com.classic.android.utils
*
* 文件描述: 存储卡工具类
* 创 建 人: 续写经典
* 创建时间: 2015/11/4 17:26
*/
@SuppressWarnings({"unused", "WeakerAccess"}) public final class SDCardUtil {
private SDCardUtil() { }
/** 默认根目录名称 */
private static String sRootDir = "classic";
/** 默认图片目录名称 */
public static final String IMAGE_DIR = "images";
/** 默认文件目录名称 */
public static final String FILE_DIR = "files";
/** 默认缓存目录名称 */
public static final String CACHE_DIR = "cache";
/** 默认APK目录名称 */
public static final String APK_DIR = "apk";
/** 默认DB目录名称 */
public static final String DB_DIR = "db";
/** 默认音频目录名称 */
public static final String AUDIO_DIR = "audio";
/** 默认视频目录名称 */
public static final String VIDEO_DIR = "video";
/** 默认书籍目录名称 */
public static final String BOOK_DIR = "books";
/** 默认日志目录名称 */
public static final String LOG_DIR = "logs";
/** 默认根目录 */
private static String sRootDirPath = null;
/** 默认图片目录 */
private static String sImageDirPath = null;
/** 默认文件目录 */
private static String sFileDirPath = null;
/** 默认缓存目录 */
private static String sCacheDirPath = null;
/** 默认apk文件的目录 */
private static String sApkDirPath = null;
/** 默认数据库文件的目录 */
private static String sDbDirPath = null;
/** 默认音频的目录 */
private static String sAudioDirPath = null;
/** 默认视频的目录 */
private static String sVideoDirPath = null;
/** 默认书籍的目录 */
private static String sBookDirPath = null;
/** 默认日志的目录 */
private static String sLogDirPath = null;
/**
* 设置SD卡文件存放根目录名称
*/
public static void setRootDirName(@NonNull String dirName) {
sRootDir = dirName;
}
/**
* SD卡是否可用
*
* @return true:可用,false:不可用
*/
public static boolean isCanUseSD() {
try {
return Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED);
} catch (Exception e) {
e.printStackTrace();
}
return false;
}
/**
* 初始化目录
*/
public static void initDir() {
//默认根目录
String downloadRootPath = File.separator + sRootDir + File.separator;
//默认图片目录
String imageDownloadPath = downloadRootPath + IMAGE_DIR + File.separator;
//默认文件目录
String fileDownloadPath = downloadRootPath + FILE_DIR + File.separator;
//默认缓存目录
String cacheDownloadPath = downloadRootPath + CACHE_DIR + File.separator;
//默认apk目录
String apkDownloadPath = downloadRootPath + APK_DIR + File.separator;
//默认DB目录
String dbDownloadPath = downloadRootPath + DB_DIR + File.separator;
//默认音频目录
String audioDownloadPath = downloadRootPath + AUDIO_DIR + File.separator;
//默认视频目录
String videoDownloadPath = downloadRootPath + VIDEO_DIR + File.separator;
//默认书籍目录
String bookDownloadPath = downloadRootPath + BOOK_DIR + File.separator;
//默认日志目录
String logDownloadPath = downloadRootPath + LOG_DIR + File.separator;
try {
if (isCanUseSD()) {
File root = Environment.getExternalStorageDirectory();
sRootDirPath = checkDir(root.getAbsolutePath() + downloadRootPath);
sCacheDirPath = checkDir(root.getAbsolutePath() + cacheDownloadPath);
sImageDirPath = checkDir(root.getAbsolutePath() + imageDownloadPath);
sFileDirPath = checkDir(root.getAbsolutePath() + fileDownloadPath);
sApkDirPath = checkDir(root.getAbsolutePath() + apkDownloadPath);
sDbDirPath = checkDir(root.getAbsolutePath() + dbDownloadPath);
sAudioDirPath = checkDir(root.getAbsolutePath() + audioDownloadPath);
sVideoDirPath = checkDir(root.getAbsolutePath() + videoDownloadPath);
sBookDirPath = checkDir(root.getAbsolutePath() + bookDownloadPath);
sLogDirPath = checkDir(root.getAbsolutePath() + logDownloadPath);
}
} catch (Exception e) {
e.printStackTrace();
}
}
private static String checkDir(@NonNull String path) {
File file = new File(path);
boolean isDirCreated = file.exists();
if (!isDirCreated) {
isDirCreated = file.mkdirs();
}
return isDirCreated ? file.getPath() : "";
}
/**
* 计算sdcard上的剩余空间.(单位：bytes)
*/
public static long freeSpaceOnSD() {
StatFs stat = new StatFs(Environment.getExternalStorageDirectory().getPath());
long freeSize;
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.JELLY_BEAN_MR2) {
freeSize = stat.getAvailableBlocksLong() * stat.getBlockSizeLong();
} else {
//noinspection deprecation
freeSize = stat.getAvailableBlocks() * stat.getBlockSize();
}
return freeSize;
}
/**
* 获取下载根目录
*/
public static String getRootDir() {
if (sRootDirPath == null) {
initDir();
}
return sRootDirPath;
}
/**
* 获取下载图片文件目录
*/
public static String getImageDirPath() {
if (sImageDirPath == null) {
initDir();
}
return sImageDirPath;
}
/**
* 获取下载文件目录
*/
public static String getFileDirPath() {
if (sFileDirPath == null) {
initDir();
}
return sFileDirPath;
}
/**
* 获取缓存目录
*/
public static String getCacheDirPath() {
if (sCacheDirPath == null) {
initDir();
}
return sCacheDirPath;
}
/**
* 获取apk文件的目录
*/
public static String getApkDirPath() {
if (sApkDirPath == null) {
initDir();
}
return sApkDirPath;
}
/**
* 获取数据库文件的目录
*/
public static String getDbDirPath() {
if (sDbDirPath == null) {
initDir();
}
return sDbDirPath;
}
/**
* 获取音频文件的目录
*/
public static String getAudioDirPath() {
if (sAudioDirPath == null) {
initDir();
}
return sAudioDirPath;
}
/**
* 获取视频文件的目录
*/
public static String getVideoDirPath() {
if (sVideoDirPath == null) {
initDir();
}
return sVideoDirPath;
}
/**
* 获取书籍文件的目录
*/
public static String getBookDirPath() {
if (sBookDirPath == null) {
initDir();
}
return sBookDirPath;
}
/**
* 获取日志文件的目录
*/
public static String getLogDirPath() {
if (sLogDirPath == null) {
initDir();
}
return sLogDirPath;
}
}
