Android Platform Runtime.getruntime (). exec

ImportJava.io.DataInputStream;ImportJava.io.DataOutputStream;Importjava.io.IOException; Public classRootcmd {Private Static BooleanMhaveroot =false;  Public Static BooleanHaveroot () {if(!mhaveroot) {            intret = execrootcmdsilent ("Echo Test"); if(Ret! = 1) {System.out.println ("Have root!"); Mhaveroot=true; } Else{System.out.println ("Not root!"); }        } Else{System.out.println ("Mhaveroot = True, with root!"); }        returnMhaveroot; } @SuppressWarnings ("Deprecation")     Public Staticstring Execrootcmd (string cmd) {string result= ""; DataOutputStream dos=NULL; DataInputStream Dis=NULL; Try{Process P= Runtime.getruntime (). EXEC ("su"); DOS=NewDataOutputStream (P.getoutputstream ()); Dis=NewDataInputStream (P.getinputstream ());            System.out.println (CMD); Dos.writebytes (cmd+ "\ n");            Dos.flush (); Dos.writebytes ("Exit\n");            Dos.flush (); String Line=NULL;  while(line = Dis.readline ())! =NULL) {result+=Line ;        } p.waitfor (); } Catch(Exception e) {e.printstacktrace (); } finally {            if(Dos! =NULL) {                Try{dos.close (); } Catch(IOException e) {e.printstacktrace (); }            }            if(Dis! =NULL) {                Try{dis.close (); } Catch(IOException e) {e.printstacktrace (); }            }        }        returnresult; }     Public Static intexecrootcmdsilent (String cmd) {intresult =-1; DataOutputStream dos=NULL; Try{Process P= Runtime.getruntime (). EXEC ("su"); DOS=NewDataOutputStream (P.getoutputstream ());            System.out.println (CMD); Dos.writebytes (cmd+ "\ n");            Dos.flush (); Dos.writebytes ("Exit\n");            Dos.flush ();            P.waitfor (); Result=P.exitvalue (); } Catch(Exception e) {e.printstacktrace (); } finally {            if(Dos! =NULL) {                Try{dos.close (); } Catch(IOException e) {e.printstacktrace (); }            }        }        returnresult; }}