InputStreamReader에서 IOException

Question

몇 가지 함수를 사용하여 클래스를 만드는 중, 이러한 함수 중 하나에 문제가있어 ProcessBuilder를 사용하여 명령을 보내고 출력을 문자열로 사용하여 셸 명령으로 사용합니다. 내가 그것을 사용할 때 InputStreamReader에 잘못된 파일 번호가있는 IOException을 catch하고 "ERROR !!!"를 반환합니다. 여기 내 코드는 다음

 public String builder(String str) {  
    startTimer(); // A method that gets the current time as int 
    String[] array = str.split(" " , 2); 
    String cmd = array[0] + " " + array[1]; 
    System.out.println("\nexecuting: " + cmd + "----"); 
    String AllText = ""; 
    try { 
     String anyString; 
     //Process process = new ProcessBuilder("sh","-c","\"",cmd,"\"").start(); 
     Process process = new ProcessBuilder(array).start(); 

     BufferedReader OUT = new BufferedReader(new InputStreamReader(process.getInputStream())); // Here is My error 
     BufferedReader ERR = new BufferedReader(new InputStreamReader(process.getErrorStream())); 
     try { 
      for (int x = endTimer()/* a method which subtracts the startTimer() from current time to get the time passed */ ; endTimer()<= 5000 ; x++){ 
       process.waitFor(); 
      }process.destroy(); 

     } catch (InterruptedException ex) { 
      ex.printStackTrace(); 
     } 
     while ((anyString = ERR.readLine()) != null) { 
      AllText = AllText + "\n" + anyString; 
     } 
     while ((anyString = OUT.readLine()) != null) { 
      AllText = AllText + "\n" + anyString; 
      while ((anyString = ERR.readLine()) != null) { 
       AllText = AllText + "\n" + anyString; 
      } 
     } 

     return AllText; 
    } catch (Exception ex) { 
     ex.printStackTrace(); 
     return "ERROR!!!"; 

    } 

이 때 스택 추적은 ... "LS"BTW, "LS/SDCARD /"이 댓글에 대해 아무것도 알 필요가 있다면 ... 내가 명령을 사용하고있다 버튼을 누르십시오 :

12-03 18:55:36.475: W/System.err(17973): java.io.IOException: read failed: EBADF (Bad file number) 
12-03 18:55:36.507: W/System.err(17973): at libcore.io.IoBridge.read(IoBridge.java:442) 
12-03 18:55:36.507: W/System.err(17973): at java.io.FileInputStream.read(FileInputStream.java:179) 
12-03 18:55:36.507: W/System.err(17973): at java.io.InputStreamReader.read(InputStreamReader.java:244) 
12-03 18:55:36.507: W/System.err(17973): at java.io.BufferedReader.fillBuf(BufferedReader.java:130) 
12-03 18:55:36.507: W/System.err(17973): at java.io.BufferedReader.readLine(BufferedReader.java:354) 
12-03 18:55:36.507: W/System.err(17973): at com.example.activity.over.other.Shells.builder(Shells.java:542) 
12-03 18:55:36.507: W/System.err(17973): at com.example.activity.over.other.MainActivity$2.onClick(MainActivity.java:91) 
12-03 18:55:36.514: W/System.err(17973): at android.view.View.performClick(View.java:4202) 
12-03 18:55:36.514: W/System.err(17973): at android.view.View$PerformClick.run(View.java:17340) 
12-03 18:55:36.514: W/System.err(17973): at android.os.Handler.handleCallback(Handler.java:725) 
12-03 18:55:36.514: W/System.err(17973): at android.os.Handler.dispatchMessage(Handler.java:92) 
12-03 18:55:36.514: W/System.err(17973): at android.os.Looper.loop(Looper.java:137) 
12-03 18:55:36.514: W/System.err(17973): at android.app.ActivityThread.main(ActivityThread.java:5039) 
12-03 18:55:36.514: W/System.err(17973): at java.lang.reflect.Method.invokeNative(Native Method) 
12-03 18:55:36.522: W/System.err(17973): at java.lang.reflect.Method.invoke(Method.java:511) 
12-03 18:55:36.522: W/System.err(17973): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793) 
12-03 18:55:36.522: W/System.err(17973): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560) 
12-03 18:55:36.522: W/System.err(17973): at dalvik.system.NativeStart.main(Native Method) 
12-03 18:55:36.522: W/System.err(17973): Caused by: libcore.io.ErrnoException: read failed: EBADF (Bad file number) 
12-03 18:55:36.530: W/System.err(17973): at libcore.io.Posix.readBytes(Native Method) 
12-03 18:55:36.530: W/System.err(17973): at libcore.io.Posix.read(Posix.java:123) 
12-03 18:55:36.530: W/System.err(17973): at libcore.io.BlockGuardOs.read(BlockGuardOs.java:149) 
12-03 18:55:36.530: W/System.err(17973): at libcore.io.IoBridge.read(IoBridge.java:432) 
12-03 18:55:36.530: W/System.err(17973): ... 17 more 

Answer 1

매니 페스트 파일에서 이것을 놓쳤습니까?

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />