Memory information : Memory « Hardware « Android

1. Android
2. Hardware
3. Memory

Memory information

  
//package org.beryl.util;

import java.util.Locale;

public class Memory {

  public static final long KB_IN_BYTES = 1024;
  public static final long MB_IN_BYTES = 1024 * KB_IN_BYTES;
  public static final long GB_IN_BYTES = 1024 * MB_IN_BYTES;
  public static final long TB_IN_BYTES = 1024 * GB_IN_BYTES;

  public static final long FOUR_MB_IN_BYTES = 4 * MB_IN_BYTES;

  final static long [] sizeArray = { TB_IN_BYTES, GB_IN_BYTES, MB_IN_BYTES, KB_IN_BYTES, 1 };
  final static String [] sizeUnitsArray = { "TB", "GB", "MB", "KB", "bytes" };

  public static long getReasonableMemoryCushion() {
    return FOUR_MB_IN_BYTES;
  }

  public static long bytesToKilobytes(long bytes) {
    return bytes / KB_IN_BYTES;
  }

  public static long bytesToMegabytes(long bytes) {
    return bytes / MB_IN_BYTES;
  }

  public static long bytesToGigabytes(long bytes) {
    return bytes / GB_IN_BYTES;
  }

  public static long bytesToTerabytes(long bytes) {
    return bytes / TB_IN_BYTES;
  }

  public static long freeMemory() {
    final Runtime rt = Runtime.getRuntime();
    return rt.freeMemory();
  }

  public static long memoryLimit() {
    final Runtime rt = Runtime.getRuntime();
    return rt.maxMemory();
  }

  public static double consumptionRatio() {
    return freeMemory() / (double)memoryLimit();
  }

  public static String toString(long bytes) {
    String byteSizeString = "<unknown> bytes";
    final int length = sizeArray.length;
    double size;
    double dBytes = (double) bytes;

    for(int i = 0; i < length; i++) {
      size = dBytes / sizeArray[i];

      if(size >= 1.0) {
        byteSizeString = String.format(Locale.ENGLISH, "%.4f %s", size, sizeUnitsArray[i]);
        break;
      }
    }

    return byteSizeString;
  }
}

   
    
  

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