Android 查看可用存储内存大小
下面为查看可用存储内存大小的示例，用于查看和内部和外部存储器的总存储。import java.io.File; import android.os.Environment; import android.os.StatFs; public class MemoryStatus { static final int ERROR = -1; static public boolean externalMemoryAvailable() { return android.os.Environment.getExternalStorageState().equals(android.os.Environment.MEDIA_MOUNTED); } 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; } 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; } 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; } } 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; } } static public String formatSize(long size) { String suffix = null; if (size >= 1024) { suffix = "KiB"; size /= 1024; if (size >= 1024) { suffix = "MiB"; 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(); } }
来个更简单的
private void update() { File path = Environment.getExternalStorageDirectory(); StatFs stat = new StatFs(path.getPath()); long blockSize = stat.getBlockSize(); long totalBlocks = stat.getBlockCount(); long availableBlocks = stat.getAvailableBlocks(); mTotalSize.setText(formatSize(totalBlocks * blockSize)); mUsedSize.setText(formatSize((totalBlocks - availableBlocks) * blockSize)); mAvailableSize.setText(formatSize(availableBlocks * blockSize));} private String formatSize(long size) { return Formatter.formatFileSize(this, size); }
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