android系统存储信息的获取

android系统容量信息用Environment和StaFs两个类来获取，具体方法如下：

1.Environment

File data = Environment.getDataDirectory();//获取手机存储文件对象

File data = Environment.getExternalStorageDirectory();//获取sdcard文件对象

File data = Environment.getExternalStorageDirectory();//获取系统root文件对象

2.StatFs:

StatFs sdStatFs = new StatFs(data.getPath());

int availableBlocks = statFs.getAvailableBlocks();// 可用存储块的数量
int blockCount = statFs.getBlockCount();// 总存储块的数量
int size = statFs.getBlockSize();// 每块存储块的大小
int totalSize = blockCount * size;// 总存储量
int availableSize = availableBlocks * size;// 可用容量

// 获取本机容量信息
public String phoneCapacity() {
// 获取本机信息
File data = Environment.getDataDirectory();
StatFs statFs = new StatFs(data.getPath());
int availableBlocks = statFs.getAvailableBlocks();// 可用存储块的数量
int blockCount = statFs.getBlockCount();// 总存储块的数量

int size = statFs.getBlockSize();// 每块存储块的大小

int totalSize = blockCount * size;// 总存储量

int availableSize = availableBlocks * size;// 可用容量

String phoneCapacity = Integer.toString(availableSize / 1024 / 1024)
+ "MB/" + Integer.toString(totalSize / 1024 / 1024) + "MB";

return phoneCapacity;
}

// 获取sdcard容量信息
public String sdcardCapacity() {
// 获取sdcard信息
File sdData = Environment.getExternalStorageDirectory();
StatFs sdStatFs = new StatFs(sdData.getPath());

int sdAvailableBlocks = sdStatFs.getAvailableBlocks();// 可用存储块的数量
int sdBlockcount = sdStatFs.getBlockCount();// 总存储块的数量
int sdSize = sdStatFs.getBlockSize();// 每块存储块的大小
int sdTotalSize = sdBlockcount * sdSize;
int sdAvailableSize = sdAvailableBlocks * sdSize;

String sdcardCapacity = Integer.toString(sdAvailableSize / 1024 / 1024)
+ "MB/" + Integer.toString(sdTotalSize / 1024 / 1024) + "MB";
return sdcardCapacity;
}