Get info about the space on a filesystem using android os StatFs

android.os.StatFs is a wrapper for Unix statvfs(), to retrieve overall information about the space on a filesystem.

Example:

MainActivity.java

package com.blogspot.android_er.androidstatfs;

import android.os.Bundle;
import android.os.Environment;
import android.os.StatFs;
import android.support.v7.app.AppCompatActivity;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity {

 @Override
 protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.activity_main);

 TextView textInfo = (TextView)findViewById(R.id.info);
 textInfo.setText("Example of using StatFs: ");
 StatFs statFs = new StatFs(Environment.getRootDirectory().getAbsolutePath());

 if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.JELLY_BEAN_MR2) {

 //The size, in bytes, of a block on the file system.
 long blockSize = statFs.getBlockSizeLong();
 textInfo.append("BlockSize: " + blockSize + " ");

 //The total number of blocks on the file system.
 long blockCount = statFs.getBlockCountLong();
 textInfo.append("BlockCount: " + blockCount + " ");

 //The total number of bytes supported by the file system.
 long totalBytes = statFs.getTotalBytes();
 textInfo.append("TotalBytes: " + totalBytes + " ");

 //# of blocks that are free on the file system and available to applications.
 long availableBlocks = statFs.getAvailableBlocksLong();
 textInfo.append("AvailableBlocks: " + availableBlocks + " ");

 //# of bytes that are free on the file system and available to applications.
 long availableBytes = statFs.getAvailableBytes();
 textInfo.append("AvailableBytes: " + availableBytes + " ");

 //The total # of blocks that are free on the file system, including reserved blocks
 //(that are not available to normal applications).
 long freeBlocks = statFs.getFreeBlocksLong();
 textInfo.append("FreeBlocks: " + freeBlocks + " ");

 //The total # of bytes that are free on the file system, including reserved blocks
 //(that are not available to normal applications).
 long freeBytes = statFs.getFreeBytes();
 textInfo.append("FreeBytes: " + freeBytes + " ");
 }else{
 textInfo.append("SDK < JELLY_BEAN_MR2 (API Level 18)");
 }

 }
}

layout/activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 
 
 android_layout_width="match_parent"
 android_layout_height="match_parent"
 android_padding="16dp"
 android_orientation="vertical"
 tools_context="com.blogspot.android_er.androidstatfs.MainActivity">

 <TextView
 android_layout_width="wrap_content"
 android_layout_height="wrap_content"
 android_layout_gravity="center_horizontal"
 android_autoLink="web"
 android_text="http://android-er.blogspot.com/"
 android_textStyle="bold"
 android_textSize="26sp"/>

 <TextView
 android_id="@+id/info"
 android_layout_width="match_parent"
 android_layout_height="match_parent"
 android_textSize="20sp"/>
</LinearLayout>

Related Posts by Categories