package com.pps.common;
import java.io.File;
import android.os.Environment;
import android.os.StatFs;
/**
* �����������ʱΪ�������洢�豸��״̬������Ϣ
* @author wangli
*
*/
public class MemoryStatus {
private static final int ERROR = -1;
//�ж�SD���Ƿ����
static public boolean externalMemoryAvailable() {
return android.os.Environment.getExternalStorageState().equals(
android.os.Environment.MEDIA_MOUNTED);
}
//��ȡ�ڲ��洢�����ÿռ��С
//data�ļ�����
static public long getAvailableInternalMemorySize() {
File path = Environment.getDataDirectory();
StatFs stat = new StatFs(path.getPath());
long blockSize = stat.getBlockSize();
long availableBlocks = stat.getAvailableBlocks();
return availableBlocks * blockSize;
}
//��ȡ�ڲ��洢���ռ��ܴ�С
static public long getTotalInternalMemorySize() {
File path = Environment.getDataDirectory();
StatFs stat = new StatFs(path.getPath());
long blockSize = stat.getBlockSize();
long totalBlocks = stat.getBlockCount();
return totalBlocks * blockSize;
}
//��ȡSD�����ÿռ��С������-1
static public long getAvailableExternalMemorySize() {
if (externalMemoryAvailable()) {
File path = Environment.getExternalStorageDirectory();
StatFs stat = new StatFs(path.getPath());
long blockSize = stat.getBlockSize();
long availableBlocks = stat.getAvailableBlocks();
return availableBlocks * blockSize;
} else {
return ERROR;
}
}
//��ȡSD���ܿռ��С������-1
static public long getTotalExternalMemorySize() {
if (externalMemoryAvailable()) {
File path = Environment.getExternalStorageDirectory();
StatFs stat = new StatFs(path.getPath());
long blockSize = stat.getBlockSize();
long totalBlocks = stat.getBlockCount();
return totalBlocks * blockSize;
} else {
return ERROR;
}
}
//���ļ���Сת���ַ���
static public String formatSize(long size) {
String suffix = null;
if (size >= 1024) {
suffix = "KB";
size /= 1024;
if (size >= 1024) {
suffix = "MB";
size /= 1024;
if(size >= 1024){
suffix = "G";
size /= 1024;
}
}
}
StringBuilder resultBuffer = new StringBuilder(Long.toString(size));
int commaOffset = resultBuffer.length() - 3;
while (commaOffset > 0) {
resultBuffer.insert(commaOffset, ',');
commaOffset -= 3;
}
if (suffix != null)
resultBuffer.append(suffix);
return resultBuffer.toString();
}
}