获取设备总内部存储器大小

Question

我有HTC设备，内部手机内存大小为16 GB，但以下代码仅显示14GB。 我想找到设备的总内部存储器大小。以下代码仅显示用户可用的内部存储器大小，而不是系统分配的大小。

File path = Environment.getRootDirectory();
StatFs stat = new StatFs(path.getPath());
long blockSize = stat.getBlockSizeLong();
long totalBlocks = stat.getBlockCountLong();
long rootCount=totalBlocks * blockSize;
Log.e("getRootDirectory",humanReadableByteCount(rootCount,true));
File dataPath = Environment.getDataDirectory();
StatFs dataStat = new StatFs(dataPath.getPath());
long dataCount=dataStat.getBlockCountLong() * 
dataStat.getBlockSizeLong();
Log.e("getDataDirectory",humanReadableByteCount(dataCount,true));
File dwnldPath = Environment.getDownloadCacheDirectory();
StatFs dwnldStat = new StatFs(dwnldPath.getPath());
long dwnldCount=dwnldStat.getBlockCountLong() * 
dwnldStat.getBlockSizeLong();
/*
File extPath = Environment.getExternalStorageDirectory();
StatFs extStat = new StatFs(extPath.getPath());
long extCount=extStat.getBlockCountLong() * 
extStat.getBlockSizeLong();
*/
long total=rootCount+dataCount+dwnldCount;

任何人都知道如何找到设备的确切内部存储器大小(手机内部存储器大小+系统区域大小(

Answer 1

尝试这种方式来查找内存

MemoryInfo mi = new MemoryInfo();
ActivityManager activityManager = (ActivityManager) getSystemService(ACTIVITY_SERVICE);
activityManager.getMemoryInfo(mi);
long availableMegs = mi.availMem / 1048576L;

Answer 2

使用以下代码，您将获得内部，外部以及RAM内存：

public static boolean externalMemoryAvailable() {
return android.os.Environment.getExternalStorageState().equals(
android.os.Environment.MEDIA_MOUNTED);
}
public static String getAvailableInternalMemorySize() {
File path = Environment.getDataDirectory();
StatFs stat = new StatFs(path.getPath());
long blockSize = stat.getBlockSizeLong();
long availableBlocks = stat.getAvailableBlocksLong();
return formatSize(availableBlocks * blockSize);
}
public static String getTotalInternalMemorySize() {
File path = Environment.getDataDirectory();
StatFs stat = new StatFs(path.getPath());
long blockSize = stat.getBlockSizeLong();
long totalBlocks = stat.getBlockCountLong();
return formatSize(totalBlocks * blockSize);
}
public static String getAvailableExternalMemorySize() {
if (externalMemoryAvailable()) {
File path = Environment.getExternalStorageDirectory();
StatFs stat = new StatFs(path.getPath());
long blockSize = stat.getBlockSizeLong();
long availableBlocks = stat.getAvailableBlocksLong();
return formatSize(availableBlocks * blockSize);
} else {
return ERROR;
}
}
public static String getTotalExternalMemorySize() {
if (externalMemoryAvailable()) {
File path = Environment.getExternalStorageDirectory();
StatFs stat = new StatFs(path.getPath());
long blockSize = stat.getBlockSizeLong();
long totalBlocks = stat.getBlockCountLong();
return formatSize(totalBlocks * blockSize);
} else {
return ERROR;
}
}
public static String formatSize(long size) {
String suffix = null;
if (size >= 1024) {
suffix = "KB";
size /= 1024;
if (size >= 1024) {
suffix = "MB";
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();
}

获取内存大小

ActivityManager actManager = (ActivityManager) getSystemService(ACTIVITY_SERVICE);
MemoryInfo memInfo = new ActivityManager.MemoryInfo();
actManager.getMemoryInfo(memInfo);
long totalMemory = memInfo.totalMem;