Android storage operation Size Display converts kb to MB read

Package IRDC. cunchu; import IRDC. cunchu. r; import Java. io. file; import Java. text. decimalformat; import android. app. activity; import android. OS. bundle; import android. OS. environment; import android. OS. statfs; import android. view. view; import android. widget. button; import android. widget. progressbar; import android. widget. textview; public class cunchu extends activity {private button mybutton; private progressbar myprogressbar; private textview mytextview;/** called when the activity is first created. * // @ override public void oncreate (bundle savedinstancestate) {super. oncreate (savedinstancestate); setcontentview (R. layout. main); mybutton = (button) findviewbyid (R. id. mybutton); myprogressbar = (progressbar) findviewbyid (R. id. myprogressbar); mytextview = (textview) findviewbyid (R. id. mytextview); mybutton. setonclicklistener (New button. onclicklistener () {@ override public void onclick (view arg0) {showsize () ;}}) ;} private void showsize () {/* Set textview and progressbar to null and 0 */mytextview. settext (""); myprogressbar. setprogress (0);/* determine whether the memory card is inserted */If (environment. getexternalstoragestate (). equals (environment. media_mounted) {/*. The path to the SD card file is/sdcard */File Path = environment. getexternalstoragedirectory ();/* statfs View File System space usage */statfs = new statfs (path. getpath ();/* block size */long blocksize = statfs. getblocksize ();/* Total number of blocks */long totalblocks = statfs. getblockcount ();/* number of blocks in use */long availableblocks = statfs. getavailableblocks (); string [] Total = filesize (totalblocks * blocksize); string [] available = filesize (availableblocks * blocksize);/* getmax is obtained in main. maximum value set by progressbar in XML */INT Ss = integer. parseint (available [0]) * myprogressbar. getmax ()/integer. parseint (total [0]); myprogressbar. setprogress (SS); string text = "Total" + total [0] + total [1] + "\ n "; text + = "available" + available [0] + available [1]; mytextview. settext (text);} else if (environment. getexternalstoragestate (). equals (environment. media_removed) {string text = "SD card deleted"; mytextview. settext (text) ;}/ * returns the string array [0] As the size [1] In kb or MB */private string [] filesize (Long SIZE) {string STR = ""; if (size> = 1024) {STR = "kb"; size/= 1024; If (size> = 1024) {STR = "MB "; size/= 1024 ;}} decimalformat formatter = new decimalformat ();/* separate three numbers, for example, 1,000 */formatter. setgroupingsize (3); string result [] = new string [2]; Result [0] = formatter. format (size); Result [1] = STR; return result ;}}

<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android"      package="irdc.cunchu"      android:versionCode="1"      android:versionName="1.0.0">    <application android:icon="@drawable/icon" android:label="@string/app_name">        <activity android:name="irdc.cunchu.cunchu"                  android:label="@string/app_name">            <intent-filter>                <action android:name="android.intent.action.MAIN" />                <category android:name="android.intent.category.LAUNCHER" />            </intent-filter>        </activity>    </application></manifest> 

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"  android:orientation="vertical"  android:layout_width="fill_parent"  android:layout_height="fill_parent"  >  <Button  android:id="@+id/myButton"  android:layout_width="wrap_content"  android:layout_height="wrap_content"    android:text="@string/strButton"  >  </Button>  <TextView    android:id="@+id/myTextView"  android:layout_width="fill_parent"   android:layout_height="wrap_content"   >  </TextView>  <ProgressBar   android:id="@+id/myProgressBar"  style="?android:attr/progressBarStyleHorizontal"  android:layout_width="fill_parent"  android:layout_height="wrap_content"  android:max="100"  android:progress="0">  </ProgressBar></LinearLayout>