package com.androidex.utils;
import android.annotation.TargetApi;
import android.os.Build;
import android.os.Environment;
import android.os.StatFs;
import java.io.BufferedInputStream;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
/**
* SDCard 帮助类
*/
public class SDCardUtil {
private static final String TAG = SDCardUtil.class.getSimpleName();
private SDCardUtil() {
/** cannot be instantiated **/
throw new UnsupportedOperationException("cannot be instantiated");
}
public static File getSdcardDir() {
File dir = Environment.getExternalStorageDirectory();
if (!dir.exists()) {
dir.mkdirs();
}
return dir;
}
public static File getCameraDir() {
File cameraDir = new File(getSdcardDir(), "/" + Environment.DIRECTORY_DCIM + "/Camera");
if (!cameraDir.exists()) {
cameraDir.mkdirs();
}
return cameraDir;
}
/**
* 判断SDCard是否可用
*
* @return
*/
public static boolean isSDCardEnable() {
return Environment.getExternalStorageState().equals(
Environment.MEDIA_MOUNTED) && !Environment.getExternalStorageState().equals(Environment.MEDIA_SHARED);
}
/**
* 获取SD卡路径
*
* @return
*/
public static String getSDCardPath() {
return Environment.getExternalStorageDirectory().getAbsolutePath()
+ File.separator;
}
/**
* 获取SD卡的剩余容量 单位byte
*
* @return
*/
public static long getSDCardAllSize() {
if (isSDCardEnable()) {
StatFs stat = new StatFs(getSDCardPath());
// 获取空闲的数据块的数量
long availableBlocks = (long) stat.getAvailableBlocks() - 4;
// 获取单个数据块的大小（byte）
long freeBlocks = stat.getAvailableBlocks();
return freeBlocks * availableBlocks;
}
return 0;
}
/**
* 获取指定路径所在空间的剩余可用容量字节数，单位byte
*
* @param filePath
* @return 容量字节 SDCard可用空间，内部存储可用空间
*/
public static long getFreeBytes(String filePath) {
// 如果是sd卡的下的路径，则获取sd卡可用容量
if (filePath.startsWith(getSDCardPath())) {
filePath = getSDCardPath();
} else {// 如果是内部存储的路径，则获取内存存储的可用容量
filePath = Environment.getDataDirectory().getAbsolutePath();
}
StatFs stat = new StatFs(filePath);
long availableBlocks = (long) stat.getAvailableBlocks() - 4;
return stat.getBlockSize() * availableBlocks;
}
/**
* 获取系统存储路径
*
* @return
*/
public static String getRootDirectoryPath() {
return Environment.getRootDirectory().getAbsolutePath();
}
/**
* 获取sd（外置）卡路径
*/
public static String getOpenSDCardPath() {
String cmd = "cat /proc/mounts";
Runtime run = Runtime.getRuntime();// 返回与当前 Java 应用程序相关的运行时对象
BufferedReader bufferedReader = null;
try {
Process p = run.exec(cmd);// 启动另一个进程来执行命令
bufferedReader = new BufferedReader(new InputStreamReader(new BufferedInputStream(p.getInputStream())));
String lineStr;
while ((lineStr = bufferedReader.readLine()) != null) {
LogA.i(TAG, "proc/mounts: " + lineStr);
if (lineStr.contains("sdcard")
&& lineStr.contains(".android_secure")) {
String[] strArray = lineStr.split(" ");
if (strArray.length >= 5) {
String sdcard = strArray[1].replace("/.android_secure", "");
//return sdcard;
}
}
if (p.waitFor() != 0 && p.exitValue() == 1) {
// p.exitValue()==0表示正常结束，1：非正常结束
LogA.e(TAG, cmd + " 命令执行失败");
}
}
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
if (bufferedReader != null) {
bufferedReader.close();
}
} catch (IOException e) {
e.printStackTrace();
}
}
return Environment.getExternalStorageDirectory().getPath();
}
/**
* 查看所有的sd路径
*/
public static String getSDCardPathEx() {
String mount = "";
try {
Runtime runtime = Runtime.getRuntime();
Process proc = runtime.exec("mount");
InputStream is = proc.getInputStream();
InputStreamReader isr = new InputStreamReader(is);
String line;
BufferedReader br = new BufferedReader(isr);
while ((line = br.readLine()) != null) {
LogA.i(TAG, "mount: " + line);
if (line.contains("secure")) {
continue;
}
if (line.contains("asec")) {
continue;
}
if (line.contains("fat")) {
String columns[] = line.split(" ");
if (columns.length > 1) {
mount = mount.concat("*" + columns[1] + "\n");
}
} else if (line.contains("fuse")) {
String columns[] = line.split(" ");
if (columns.length > 1) {
mount = mount.concat(columns[1] + "\n");
}
}
}
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return mount;
}
/**
* 获取当前路径，可用空间
*
* @param path
* @return
*/
@TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR2)
public static long getAvailableSize(String path) {
try {
File base = new File(path);
StatFs stat = new StatFs(base.getPath());
return stat.getBlockSizeLong() * ((long) stat.getAvailableBlocksLong());
} catch (Exception e) {
e.printStackTrace();
}
return 0;
}
/**
* 获取 SD card 信息
*/
@TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR2)
public static SDCardInfo getSDCardInfo() {
SDCardInfo sd = new SDCardInfo();
String state = Environment.getExternalStorageState();
if (Environment.MEDIA_MOUNTED.equals(state)) {
sd.isExist = true;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2) {
File sdcardDir = Environment.getExternalStorageDirectory();
StatFs sf = new StatFs(sdcardDir.getPath());
sd.totalBlocks = sf.getBlockCountLong();
sd.blockByteSize = sf.getBlockSizeLong();
sd.availableBlocks = sf.getAvailableBlocksLong();
sd.availableBytes = sf.getAvailableBytes();
sd.freeBlocks = sf.getFreeBlocksLong();
sd.freeBytes = sf.getFreeBytes();
sd.totalBytes = sf.getTotalBytes();
}
}
if (LogA.isDebug()) {
LogA.i(TAG, sd.toString());
}
return sd;
}
/**
* see more {@link android.os.StatFs}
*/
public static class SDCardInfo {
public boolean isExist;
public long totalBlocks;
public long freeBlocks;
public long availableBlocks;
public long blockByteSize;
public long totalBytes;
public long freeBytes;
public long availableBytes;
@Override
public String toString() {
return "SDCardInfo{" +
"isExist=" + isExist +
", totalBlocks=" + totalBlocks +
", freeBlocks=" + freeBlocks +
", availableBlocks=" + availableBlocks +
", blockByteSize=" + blockByteSize +
", totalBytes=" + totalBytes +
", freeBytes=" + freeBytes +
", availableBytes=" + availableBytes +
'}';
}
}
}