एंड्रॉइड फ़ाइल नहीं बना रहा

Question

मैं चाहता हूं कि यह खंड एक बटन क्लिक होने पर एक सीएसवी फ़ाइल को लिखने के लिए चाहता है लेकिन मैं java.io.IOException प्राप्त कर रहा हूं: खुला असफल: ENOENT (ऐसी कोई फ़ाइल या निर्देशिका नहीं)। किसी भी तरह की सहायता का स्वागत किया जाएगा।

public class AddFragment extends Fragment { 

    static EditText spent,saved,coupons; 
    Button writeExcelButton; 
    String data; 
    Spinner spinner; 

    @Override 
    public View onCreateView(LayoutInflater inflater, ViewGroup container, 
      Bundle savedInstanceState) { 

     View view = inflater.inflate(R.layout.add_layout, container, false); 

     setSpinnerContent(view); 

     spent = (EditText) view.findViewById(R.id.spent1); 
     saved = (EditText) view.findViewById(R.id.saved1); 
     coupons = (EditText) view.findViewById(R.id.coupons1); 

     writeExcelButton = (Button) view.findViewById(R.id.button_addGroc); 
     writeExcelButton.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View v) { 
       updateSheet(); 
      } 
     }); 

     return view; 
    } 

    private void setSpinnerContent (View view) { 
     spinner = (Spinner) view.findViewById(R.id.groc_store); 
     ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(getActivity(), 
      R.array.store1, android.R.layout.simple_spinner_item); 
     adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); 
     spinner.setAdapter(adapter); 
    } 

    public void updateSheet() { 
     try { 
      // This is the string that should be written to file 
      String mySpin =spinner.getSelectedItem().toString(); 
      data = mySpin + "," + spent.getText().toString() + "," + saved.getText().toString() + "," + coupons.getText().toString() + "/n"; 

      // This is the file that should be written to 
      String sdCard = Environment.getExternalStorageDirectory().toString(); 
      File dir = new File(sdCard + "/dir"); 
      if (!dir.exists()) { 
       dir.mkdir(); 
      } 

      File myFile = new File(dir.getAbsolutePath(), "savings.csv"); 

      // if file doesn't exists, then create it 
      if (!myFile.exists()) { 
       myFile.createNewFile(); 
      } 

     } catch (IOException e) { 
      e.printStackTrace(); 
     } 
    } 
} 

यह मेरा LogCat कैसा दिखाई देता है

11-14 13:29:23.681: W/System.err(14386): java.io.IOException: open failed: ENOENT (No such file or directory) 
11-14 13:29:23.681: W/System.err(14386): at java.io.File.createNewFile(File.java:948) 
11-14 13:29:23.691: W/System.err(14386): at com.example.myfirstapp.AddFragment.updateSheet(AddFragment.java:101) 
11-14 13:29:23.691: W/System.err(14386): at com.example.myfirstapp.AddFragment$1.onClick(AddFragment.java:59) 
11-14 13:29:23.691: W/System.err(14386): at android.view.View.performClick(View.java:4240) 
11-14 13:29:23.691: W/System.err(14386): at android.view.View$PerformClick.run(View.java:17721) 
11-14 13:29:23.691: W/System.err(14386): at android.os.Handler.handleCallback(Handler.java:730) 
11-14 13:29:23.691: W/System.err(14386): at android.os.Handler.dispatchMessage(Handler.java:92) 
11-14 13:29:23.691: W/System.err(14386): at android.os.Looper.loop(Looper.java:137) 
11-14 13:29:23.691: W/System.err(14386): at android.app.ActivityThread.main(ActivityThread.java:5103) 
11-14 13:29:23.691: W/System.err(14386): at java.lang.reflect.Method.invokeNative(Native Method) 
11-14 13:29:23.691: W/System.err(14386): at java.lang.reflect.Method.invoke(Method.java:525) 
11-14 13:29:23.701: W/System.err(14386): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737) 
11-14 13:29:23.711: W/System.err(14386): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553) 
11-14 13:29:23.711: W/System.err(14386): at dalvik.system.NativeStart.main(Native Method) 
11-14 13:29:23.711: W/System.err(14386): Caused by: libcore.io.ErrnoException: open failed: ENOENT (No such file or directory) 
11-14 13:29:23.711: W/System.err(14386): at libcore.io.Posix.open(Native Method) 
11-14 13:29:23.711: W/System.err(14386): at libcore.io.BlockGuardOs.open(BlockGuardOs.java:110) 
11-14 13:29:23.711: W/System.err(14386): at java.io.File.createNewFile(File.java:941) 

Answer 1

dir.mkdir(); 

dir.mkdirs(); 

इसके अलावा करने के लिए सिर्फगुजर कोशिश बदलने का प्रयास करें हैके बजाय dir.getAbsolutePath()

संपादित

इसके अलावा, आप नहीं ऐसा फ़ाइल पथ concatanate करना चाहते हैं। आज़माएं:

File myFile = new File(Environment.getExternalStorageDirectory(), "dir/savings.csv"); 
if (!myFile.exists()) { 
    myFile.mkdirs(); 
    myFile.createNewFile(); 
} 

Answer 2

मैनिफेस्ट में यह अनुमतियां जोड़ें।

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