Android Get sdcard Info

<LinearLayoutxmlns:android= "Http://schemas.android.com/apk/res/android"Xmlns:tools= "Http://schemas.android.com/tools"Android:id= "@+id/linearlayout1"Android:layout_width= "Match_parent"Android:layout_height= "Match_parent"android:orientation= "vertical"Tools:context=". Mainactivity " >    <!--Label control showing the number of blocks -    <TextViewAndroid:id= "@+id/tv_totalblocks"Android:layout_width= "Wrap_content"Android:layout_height= "Wrap_content" />    <!--Label control showing the size of the block -    <TextViewAndroid:id= "@+id/tv_blocsize"Android:layout_width= "Wrap_content"Android:layout_height= "Wrap_content" />    <!--to display the label control for the available block -    <TextViewAndroid:id= "@+id/tv_availablock"Android:layout_width= "Wrap_content"Android:layout_height= "Wrap_content" />    <!--display a Label control for an empty block -    <TextViewAndroid:id= "@+id/tv_freeblock"Android:layout_width= "Wrap_content"Android:layout_height= "Wrap_content" />    <!--Label control showing the total size of the SDcard -    <TextViewAndroid:id= "@+id/tv_sdtotalsize"Android:layout_width= "Wrap_content"Android:layout_height= "Wrap_content" />    <!--Label control showing the remaining size of the SDcard -    <TextViewAndroid:id= "@+id/tv_sdfreesize"Android:layout_width= "Wrap_content"Android:layout_height= "Wrap_content" /></LinearLayout>

 Packagecom.example.yanlei.yl2;ImportAndroid.os.Bundle;Importandroid.support.v7.app.AppCompatActivity;ImportAndroid.widget.TextView;ImportJava.io.File; Public classMainactivityextendsappcompatactivity {PrivateTextView mtvtotalblocks;//sdcard number of blocks on the block    PrivateTextView mtvblocsize;//size of each block on the SDcard    PrivateTextView Mtvavailablock;//number of blocks available for the program to use    PrivateTextView Mtvfreeblock;//The number of all remaining blocks (including chunks that are not available in the General program reserved)    PrivateTextView mtvsdtotalsize;//sdcard Total capacity size MB    PrivateTextView mtvsdfreesize;//sdcard remaining size MB@Override Public voidonCreate (Bundle savedinstancestate) {Super. OnCreate (savedinstancestate);        Setcontentview (R.layout.activity_main); //get the controls in the layoutFindview (); //Binding Control Eventssdcardsizetest (); }    Private voidFindview () {//Bound ControlMtvtotalblocks =(TextView) Findviewbyid (r.id.tv_totalblocks); Mtvblocsize=(TextView) Findviewbyid (r.id.tv_blocsize); Mtvavailablock=(TextView) Findviewbyid (R.id.tv_availablock); Mtvfreeblock=(TextView) Findviewbyid (R.id.tv_freeblock); Mtvsdtotalsize=(TextView) Findviewbyid (r.id.tv_sdtotalsize); Mtvsdfreesize=(TextView) Findviewbyid (r.id.tv_sdfreesize); }     Public voidsdcardsizetest () {//get the current state of SDcardString sdcstring =android.os.Environment.getExternalStorageState (); //if the current system has sdcard present        if(Sdcstring.equals (Android.os.Environment.MEDIA_MOUNTED)) {//get sdcard file pathFile Pathfile =android.os.Environment. getExternalStorageDirectory (); //get the state of SDcardAndroid.os.StatFs StatFs =NewAndroid.os.StatFs (Pathfile.getpath ()); //get total block on SDcard            LongNtotalblocks =Statfs.getblockcount (); Mtvtotalblocks.settext ("Total blocks on SDcard:" +ntotalblocks); //gets the size of each block on the SDcard            LongNblocsize =statfs.getblocksize (); Mtvblocsize.settext ("Size of each bloc on the sdcard:" +nblocsize); //gets the number of blocks available for the program to use            LongNavailablock =statfs.getavailableblocks (); Mtvavailablock.settext ("Number of blocks available for program use:" +Navailablock); //get the number of all remaining blocks (including chunks that are not available for General program reservation)            LongNfreeblock =statfs.getfreeblocks (); Mtvfreeblock.settext ("The number of all remaining blocks:" +Nfreeblock); //calculate sdcard Total capacity MB            LongNsdtotalsize = Ntotalblocks * nblocsize/1024/1024; Mtvsdtotalsize.settext ("SDcard Total capacity size MB:" + nsdtotalsize + "MB"); //calculate sdcard remaining size MB            LongNsdfreesize = Navailablock * nblocsize/1024/1024; Mtvsdfreesize.settext ("SDcard Remaining size MB:" + nsdfreesize + "MB"); }    }}

Android Get sdcard Info