Android Action/system Path (move file)

Cause: You need to hide the phone drop-down box menu. The actual is to delete the/system/app/systemui.apk file, that can achieve the hidden effect. (Insufficient: will cause the mobile phone operating system to restart)   solutions: 1. First obtain the device file corresponding to the/system mount point 2. Re-mount it as read-write 3 with root permission. Delete/system/app/systemui.apk files with root permission   Focus: 1. Mount the/system path to read/write Mount-o remount/dev/xxx/system2. The program gets root permissions su   three main functions:1       Input: path here/system            output: path corresponding device file       Get device files      public static string Getdev (string path) 2       input:      output:      Execute command with root (verify command to execute normally)       public static Boolean Runrootcommand (String command) 3     input:      output:      Rename file      public static int Move (string sourcefile, String destfile)   One implementation: public static String Getdev (String Path) {    if (null = = path)         return null;    BufferedReader in = null;  &nbsp ; Try {        Process p = runtime.getruntime (). EXEC ("mount");        p.waitfor (); &nbsp ;       in = new BufferedReader (New InputStreamReader (P.getinputstream ()));        Strin G line = null;        when (line = In.readline ()) = null) {            if (line.contains path) {                return line;        & nbsp  }       }        return null;   } catch (IOException e) {       //TODO auto-generated catch block         e.printstacktrace ();   } catch (Interrup Tedexception e) {       //TODO auto-generated catch block         E.printstacktrace ();  & nbsp }       return null;}  public Static Boolean Runrootcommand (String command) {    process process = null;    DataOutputStream os = null;    try{        process = Runtime.getruntime (). EXEC ("su");        OS = new DataOutputStream (Process.getoutputstream ());        O S.writebytes (command+ "\ n");        os.writebytes ("exit\n");        Os.flush ();         process.waitfor ();   }catch (Exception e) {        return false;& nbsp  }finally{        try{            if (null! = OS) {    &NB Sp           os.close ();           }        &NBSP ;   if (null! = Process) {                Process.destroy ();           }       }catch (Exception e) {            E.printsta Cktrace ();      }   }    return true;}   //@return   0 Success   1 source file not saved  -2 transfer failed-3 parameter error public static int Move (string sourcefile, String Destfi Le) {    int result = 0;    if (null = = SourceFile | | null = = destfile)         Retu rn-3;    File SFile = new file (sourcefile);    if (!sfile.exists ())//source file does not exist         return-1;    String dev = Getdev ("/system");    if (null = dev) {        for (int i=0; I<dev.length (); i++)             SYSTEM.OUT.PRINTLN ("-----------" + (int) Dev.charat (i));        string[] contents = Dev.split ("");        String command = "Mount-o remount" +contents [0]+ "/system";        runrootcommand (command);        SYSTEM.OUT.PRINTLN ("---- ------"+command);   }    try{       String command = "mv" +sourcefile+ "" +destfile;        runrootcommand (command);    &N Bsp  //process move = Runtime.getruntime (). EXEC ("mv" +sourcefile+ "" +destfile+ "");   }catch (Exception e) {& nbsp       SYSTEM.OUT.PRINTLN ("------------" +e.getmessage ());        return-2;  & nbsp }    File Dfile = new file (destfile);    if (dfile.exists () &&!sfile.exists ()) {    & nbsp   result = 0;   }else{        result = -2;   }    return result;& nbsp  }  NOTE: The phone needs root

Android Action/system Path (move file)