Recherche avancée

Sur d’autres sites (5853)

• Android- Error during executing Runtime.getRuntime().exec() - Environment Null -ffmpeg

  18 février 2015, par Chaitanya Chandurkar

  I have compiled ffmpeg library on ubuntu 11.10 and ported compiled files on android.
  After compiling i got libffmpeg.so successfully. It gets loaded on android successfully.

  I am doing it on ubuntu 11.10 eclipse android emulator.

  I have created a small test application which act as command prompt which accepts command from user and displays result. (testing ffmpeg commands)

  When i run simple commands like "ls", "ls -l" it works perfectly. but when i simply type "cd mnt" or "ffmpeg" as command and try to run it. I got Warnings in Logcat saying that

  08-26 16:44:52.553: W/System.err(5961): java.io.IOException: Error running exec(). Command: [ffmpeg] Working Directory: null Environment: null
  
  08-26 16:44:52.573: W/System.err(5961):     at java.lang.ProcessManager.exec(ProcessManager.java:211)
  
  08-26 16:44:52.573: W/System.err(5961):     at java.lang.Runtime.exec(Runtime.java:168)
  
  08-26 16:44:52.573: W/System.err(5961):     at java.lang.Runtime.exec(Runtime.java:241)
  
  08-26 16:44:52.583: W/System.err(5961):     at java.lang.Runtime.exec(Runtime.java:184)
  
  08-26 16:44:52.593: W/System.err(5961):     at ch.ffmpeg.reversit.MainActivity.Execute(MainActivity.java:61)
  
  08-26 16:44:52.593: W/System.err(5961):     at ch.ffmpeg.reversit.MainActivity$1.onClick(MainActivity.java:46)
  
  08-26 16:44:52.593: W/System.err(5961):     at android.view.View.performClick(View.java:3480)
  
  08-26 16:44:52.593: W/System.err(5961):     at android.view.View$PerformClick.run(View.java:13983)
  
  08-26 16:44:52.603: W/System.err(5961):     at android.os.Handler.handleCallback(Handler.java:605)
  
  08-26 16:44:52.603: W/System.err(5961):     at android.os.Handler.dispatchMessage(Handler.java:92)
  
  08-26 16:44:52.603: W/System.err(5961):     at android.os.Looper.loop(Looper.java:137)
  
  08-26 16:44:52.614: W/System.err(5961):     at android.app.ActivityThread.main(ActivityThread.java:4340)
  
  08-26 16:44:52.624: W/System.err(5961):     at java.lang.reflect.Method.invokeNative(Native Method)
  
  08-26 16:44:52.624: W/System.err(5961):     at java.lang.reflect.Method.invoke(Method.java:511)
  
  08-26 16:44:52.634: W/System.err(5961):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
  
  08-26 16:44:52.634: W/System.err(5961):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
  
  08-26 16:44:52.644: W/System.err(5961):     at dalvik.system.NativeStart.main(Native Method)
  
  08-26 16:44:52.644: W/System.err(5961): Caused by: java.io.IOException: Permission denied
  
  08-26 16:44:52.674: W/System.err(5961):     at java.lang.ProcessManager.exec(Native Method)
  
  08-26 16:44:52.674: W/System.err(5961):     at java.lang.ProcessManager.exec(ProcessManager.java:209)
  
  08-26 16:44:52.684: W/System.err(5961):     ... 16 more

  Here is my code :

  imports;
  
  public class MainActivity extends Activity {
  
      String com;
  
      Process process;
  
      EditText command;
  
      Button run;
  
      RelativeLayout main_layout;
  
  
  
      static {
  
       System.loadLibrary("ffmpeg");
  
      }
  
  
  
      /** Called when the activity is first created. */
  
      @Override
  
      public void onCreate(Bundle savedInstanceState) {
  
          super.onCreate(savedInstanceState);
  
          setContentView(R.layout.activity_main);
  
  
  
         //find view 
  
         command=(EditText)findViewById(R.id.command);
  
         run=(Button)findViewById(R.id.run);
  
  
  
          run.setOnClickListener(new OnClickListener() {
  
              public void onClick(View v) {
  
                  com=command.getText().toString();
  
                  try {
  
                      Execute();
  
                  } catch (IOException e) {
  
                      // TODO Auto-generated catch block
  
                      e.printStackTrace();
  
                  } catch (InterruptedException e) {
  
                      // TODO Auto-generated catch block
  
                      e.printStackTrace();
  
                  }
  
  
  
              }
  
          }); 
  
  
  
      }
  
  
  
      public void Execute() throws IOException, InterruptedException{
  
          process=Runtime.getRuntime().exec(com);
  
          // process = pb.command(com).redirectErrorStream(true).start();
  
  
  
          if(process!=null)
  
          ShowOutput();
  
          else
  
          Toast.makeText(getBaseContext(),"Null Process",Toast.LENGTH_LONG).show();
  
      }
  
  
  
      public void ShowOutput() throws IOException, InterruptedException{
  
          String s,text="",errors="";
  
          BufferedReader stdInput = new BufferedReader(new 
  
                  InputStreamReader(process.getInputStream()));
  
  
  
             BufferedReader stdError = new BufferedReader(new 
  
                  InputStreamReader(process.getErrorStream()));
  
  
  
  
  
             TextView output=(TextView)findViewById(R.id.output);
  
             TextView error=(TextView)findViewById(R.id.error);
  
  
  
              while ((s = stdInput.readLine()) != null) {
  
                     text+=s.toString()+"\n";
  
                     System.out.println("Error: "+s);
  
                 }
  
  
  
           output.setText(text);
  
           text="";
  
             // read any errors from the attempted command
  
             System.out.println("Here is the standard error of the command (if any):\n");
  
             while ((s = stdError.readLine()) != null) {
  
                 text+=s.toString()+"\n";
  
                 System.out.println("Error: "+s);
  
             }
  
  
  
             error.setText(text);
  
  
  
             error.setMovementMethod(new ScrollingMovementMethod());
  
             output.setMovementMethod(new ScrollingMovementMethod());
  
  
  
             stdInput.close();
  
             stdError.close();
  
  
  
             process.waitFor();
  
             process.getOutputStream().close();
  
             process.getInputStream().close();
  
             process.getErrorStream().close(); 
  
             process.destroy();
  
  
  
  
  
      }
  
  
  
  }

  I even tried process = pb.command(com).redirectErrorStream(true).start(); for execution. It gives me same error but this time environment was [ANDROID_SOCKET_Zygot] bla bla bla..

  EDIT 1 :
  I use Openjdk on ubuntu

  Help me out !!

• Révision 21547 : Lorsque r11911 a ajouté la visualisation des docs joints à un message de forum d...

  11 septembre 2014, par esj -

  On isole dans une fonction le code introduit pour qu’il profite au deux cas. En primer, cette fonction admet un argument optionnel indiquant si l’accès au document est autorisé (True par défaut). S’il ne l’est pas, le nom du fichier est affiché, mais n’est plus un lien vers son URL.

• Disable image file name correction by default. Closes #3332

  2 septembre 2014, par blueimp

  Disable image file name correction by default. Closes #3332
  To enable image file correction, the option `correct_image_extensions`
  
  can be set to `true`.
  
  This applies the exif_imagetype function on all files if available and
  
  corrects the file extension if it doesn’t match.