android内部手机存储

Question

如何从应用中检索您的手机内部存储？我发现memoryinfo，但它似乎返回有关您当前正在运行的任务多少内存的信息。我试图让我的应用程序检索有多少内部电话存储可用。

Answer 1

使用android.os.Environment找到内部目录，然后使用android.os.StatFs来调用它的Unix statfs系统调用。从Android设置应用程序无耻stolen：

File path = Environment.getDataDirectory(); 
StatFs stat = new StatFs(path.getPath()); 
long blockSize = stat.getBlockSize(); 
long availableBlocks = stat.getAvailableBlocks(); 
return Formatter.formatFileSize(this, availableBlocks * blockSize); 

Answer 2

我很难有矿工。所以我想分享一下我的工作代码来节省一些人的时间。
在32GB设备和1GB设备上进行测试。

// Return size is in Megabytes 
public class DeviceMemory { 

     public static long getInternalStorageSpace() 
     { 
      StatFs statFs = new StatFs(Environment.getDataDirectory().getAbsolutePath()); 
      //StatFs statFs = new StatFs("/data"); 
      long total = ((long)statFs.getBlockCount() * (long)statFs.getBlockSize())/1048576; 
      return total; 
     } 

     public static long getInternalFreeSpace() 
     { 
      StatFs statFs = new StatFs(Environment.getDataDirectory().getAbsolutePath()); 
      //StatFs statFs = new StatFs("/data"); 
      long free = ((long)statFs.getAvailableBlocks() * (long)statFs.getBlockSize())/1048576; 
      return free; 
     } 

     public static long getInternalUsedSpace() 
     { 
      StatFs statFs = new StatFs(Environment.getDataDirectory().getAbsolutePath()); 
      //StatFs statFs = new StatFs("/data"); 
      long total = ((long)statFs.getBlockCount() * (long)statFs.getBlockSize())/1048576; 
      long free = ((long)statFs.getAvailableBlocks() * (long)statFs.getBlockSize())/1048576; 
      long busy = total - free; 
      return busy; 
     } 
}