问题小结（7）-sd卡和/data分区使用情况检测

用来获取sd卡和系统/data分区的使用情况，包括：总的空间大小、可用空间、已用空间。

package com.schogini.dhcp; import java.io.File; import android.content.Context; import android.os.Environment; import android.os.StatFs; public class CheckStore { private static String notice; public static String checkSD(Context contect){ File data=Environment.getDataDirectory(); //获得data的路径 StatFs data_stat=new StatFs(data.getPath()); //创建StatFs对象 long data_blockSize=data_stat.getBlockSize(); //获取block的size float data_totalBlocks=data_stat.getBlockCount();//获取block的个数 int data_sizeInMb=(int)(data_blockSize*data_totalBlocks)/1024/1024;//计算总容量 long data_availableBlocks=data_stat.getAvailableBlocks(); //获取可用block的个数 float data_percent=(int)(data_blockSize*data_availableBlocks)/1024/1024;//计算可用容量 notice="FLASH使用情况：\n总容量："+data_sizeInMb+"M.\n已用:"+(data_sizeInMb-data_percent+"\n可用:"+data_percent+"M."); if(Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)){ File filePath=Environment.getExternalStorageDirectory(); //获得sd 卡的路径 StatFs stat=new StatFs(filePath.getPath()); //创建StatFs对象 long blockSize=stat.getBlockSize(); //获取block的size float totalBlocks=stat.getBlockCount(); //获取block的个数 int sizeInMb =(int)(blockSize*totalBlocks)/1024/1024; //计算总容量 long availableBlocks=stat.getAvailableBlocks(); //可用block的个数 float percent=(int)(blockSize*availableBlocks)/1024/1024; //计算可用容量 notice=notice+"\nSD卡使用情况：\n总容量："+sizeInMb+"M.\n已用："+(sizeInMb-percent+"M\n可用:"+percent+"M."); return notice; } else{ notice=notice+"\nSD卡使用情况：未插入SD卡"; return notice; } } }