OCR Tesseract沒有通過super.OnCreate（）調用，即使它是

Question

我遵循很多教程來測試tesseract OCR。我已經完成了構建，但啓動應用程序時出現錯誤。

Process: com.fortytwo.section.firstproject, PID: 31239 
                       android.util.SuperNotCalledException: Activity {com.fortytwo.section.firstproject/com.fortytwo.section.firstproject.MainActivity} did not call through to super.onCreate() 

這super.OnCreate是在的.java

package com.fortytwo.section.firstproject; 


public class MainActivity extends Activity { 
public static final String PACKAGE_NAME = "com.datumdroid.android.ocr.simple"; 
public static final String DATA_PATH = Environment 
     .getExternalStorageDirectory().toString() + "/SimpleAndroidOCR/"; 

// You should have the trained data file in assets folder 
// You can get them at: 
// http://code.google.com/p/tesseract-ocr/downloads/list 
public static final String lang = "eng"; 

private static final String TAG = "SimpleAndroidOCR.java"; 

protected Button _button; 
// protected ImageView _image; 
protected EditText _field; 
protected String _path; 
protected boolean _taken; 

protected static final String PHOTO_TAKEN = "photo_taken"; 

@Override 
public void onCreate(Bundle savedInstanceState) { 


    String[] paths = new String[] { DATA_PATH, DATA_PATH + "tessdata/" }; 

    for (String path : paths) { 
     File dir = new File(path); 
     if (!dir.exists()) { 
      if (!dir.mkdirs()) { 
       Log.v(TAG, "ERROR: Creation of directory " + path + " on sdcard failed"); 
       return; 
      } else { 
       Log.v(TAG, "Created directory " + path + " on sdcard"); 
      } 
     } 

    } 

    // lang.traineddata file with the app (in assets folder) 
    // You can get them at: 
    // http://code.google.com/p/tesseract-ocr/downloads/list 
    // This area needs work and optimization 
    if (!(new File(DATA_PATH + "tessdata/" + lang + ".traineddata")).exists()) { 
     try { 

      AssetManager assetManager = getAssets(); 
      InputStream in = assetManager.open("tessdata/" + lang + ".traineddata"); 
      //GZIPInputStream gin = new GZIPInputStream(in); 
      OutputStream out = new FileOutputStream(DATA_PATH 
        + "tessdata/" + lang + ".traineddata"); 

      // Transfer bytes from in to out 
      byte[] buf = new byte[1024]; 
      int len; 
      //while ((lenf = gin.read(buff)) > 0) { 
      while ((len = in.read(buf)) > 0) { 
       out.write(buf, 0, len); 
      } 
      in.close(); 
      //gin.close(); 
      out.close(); 

      Log.v(TAG, "Copied " + lang + " traineddata"); 
     } catch (IOException e) { 
      Log.e(TAG, "Was unable to copy " + lang + " traineddata " +  e.toString()); 
     } 
    } 

    super.onCreate(savedInstanceState); 

    setContentView(R.layout.activity_main); 

    // _image = (ImageView) findViewById(R.id.image); 
    _field = (EditText) findViewById(R.id.field); 
    _button = (Button) findViewById(R.id.button); 
    _button.setOnClickListener(new ButtonClickHandler()); 

    _path = DATA_PATH + "/ocr.jpg"; 
} 

public class ButtonClickHandler implements View.OnClickListener { 
    public void onClick(View view) { 
     Log.v(TAG, "Starting Camera app"); 
     startCameraActivity(); 
    } 
} 

// Simple android photo capture: 
// http://labs.makemachine.net/2010/03/simple-android-photo-capture/ 

protected void startCameraActivity() { 
    File file = new File(_path); 
    Uri outputFileUri = Uri.fromFile(file); 

    final Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); 
    intent.putExtra(MediaStore.EXTRA_OUTPUT, outputFileUri); 

    startActivityForResult(intent, 0); 
} 

@Override 
protected void onActivityResult(int requestCode, int resultCode, Intent data) { 

    Log.i(TAG, "resultCode: " + resultCode); 

    if (resultCode == -1) { 
     onPhotoTaken(); 
    } else { 
     Log.v(TAG, "User cancelled"); 
    } 
} 

@Override 
protected void onSaveInstanceState(Bundle outState) { 
    outState.putBoolean(MainActivity.PHOTO_TAKEN, _taken); 
} 

@Override 
protected void onRestoreInstanceState(Bundle savedInstanceState) { 
    Log.i(TAG, "onRestoreInstanceState()"); 
    if (savedInstanceState.getBoolean(MainActivity.PHOTO_TAKEN)) { 
     onPhotoTaken(); 
    } 
} 

protected void onPhotoTaken() { 
    _taken = true; 

    BitmapFactory.Options options = new BitmapFactory.Options(); 
    options.inSampleSize = 4; 

    Bitmap bitmap = BitmapFactory.decodeFile(_path, options); 

    try { 
     ExifInterface exif = new ExifInterface(_path); 
     int exifOrientation = exif.getAttributeInt(
       ExifInterface.TAG_ORIENTATION, 
       ExifInterface.ORIENTATION_NORMAL); 

     Log.v(TAG, "Orient: " + exifOrientation); 

     int rotate = 0; 

     switch (exifOrientation) { 
      case ExifInterface.ORIENTATION_ROTATE_90: 
       rotate = 90; 
       break; 
      case ExifInterface.ORIENTATION_ROTATE_180: 
       rotate = 180; 
       break; 
      case ExifInterface.ORIENTATION_ROTATE_270: 
       rotate = 270; 
       break; 
     } 

     Log.v(TAG, "Rotation: " + rotate); 

     if (rotate != 0) { 

      // Getting width & height of the given image. 
      int w = bitmap.getWidth(); 
      int h = bitmap.getHeight(); 

      // Setting pre rotate 
      Matrix mtx = new Matrix(); 
      mtx.preRotate(rotate); 

      // Rotating Bitmap 
      bitmap = Bitmap.createBitmap(bitmap, 0, 0, w, h, mtx, false); 
     } 

     // Convert to ARGB_8888, required by tess 
     bitmap = bitmap.copy(Bitmap.Config.ARGB_8888, true); 

    } catch (IOException e) { 
     Log.e(TAG, "Couldn't correct orientation: " + e.toString()); 
    } 

    // _image.setImageBitmap(bitmap); 

    Log.v(TAG, "Before baseApi"); 

    TessBaseAPI baseApi = new TessBaseAPI(); 
    baseApi.setDebug(true); 
    baseApi.init(DATA_PATH, lang); 
    baseApi.setImage(bitmap); 

    String recognizedText = baseApi.getUTF8Text(); 

    baseApi.end(); 

    // You now have the text in recognizedText var, you can do anything with it. 
    // We will display a stripped out trimmed alpha-numeric version of it (if lang is eng) 
    // so that garbage doesn't make it to the display. 

    Log.v(TAG, "OCRED TEXT: " + recognizedText); 

    if (lang.equalsIgnoreCase("eng")) { 
     recognizedText = recognizedText.replaceAll("[^a-zA-Z0-9]+", " "); 
    } 

    recognizedText = recognizedText.trim(); 

    if (recognizedText.length() != 0) { 
     _field.setText(_field.getText().toString().length() == 0 ? recognizedText : _field.getText() + " " + recognizedText); 
     _field.setSelection(_field.getText().toString().length()); 
    } 

    // Cycle done. 
} 

// www.Gaut.am was here 
// Thanks for reading! 
} 

任何幫助將是巨大的。提前致謝。

Answer 1

改變你喜歡這個onCreate方法... super關鍵字必須在方法

@Override 
public void onCreate(Bundle savedInstanceState) { 

    super.onCreate(savedInstanceState); 

    setContentView(R.layout.activity_main); 

    String[] paths = new String[] { DATA_PATH, DATA_PATH + "tessdata/" }; 

    for (String path : paths) { 
     File dir = new File(path); 
     if (!dir.exists()) { 
      if (!dir.mkdirs()) { 
       Log.v(TAG, "ERROR: Creation of directory " + path + " on sdcard failed"); 
       return; 
      } else { 
       Log.v(TAG, "Created directory " + path + " on sdcard"); 
      } 
     } 

    } 

    // lang.traineddata file with the app (in assets folder) 
    // You can get them at: 
    // http://code.google.com/p/tesseract-ocr/downloads/list 
    // This area needs work and optimization 
    if (!(new File(DATA_PATH + "tessdata/" + lang + ".traineddata")).exists()) { 
     try { 

      AssetManager assetManager = getAssets(); 
      InputStream in = assetManager.open("tessdata/" + lang + ".traineddata"); 
      //GZIPInputStream gin = new GZIPInputStream(in); 
      OutputStream out = new FileOutputStream(DATA_PATH 
        + "tessdata/" + lang + ".traineddata"); 

      // Transfer bytes from in to out 
      byte[] buf = new byte[1024]; 
      int len; 
      //while ((lenf = gin.read(buff)) > 0) { 
      while ((len = in.read(buf)) > 0) { 
       out.write(buf, 0, len); 
      } 
      in.close(); 
      //gin.close(); 
      out.close(); 

      Log.v(TAG, "Copied " + lang + " traineddata"); 
     } catch (IOException e) { 
      Log.e(TAG, "Was unable to copy " + lang + " traineddata " +  e.toString()); 
     } 
    } 


    // _image = (ImageView) findViewById(R.id.image); 
    _field = (EditText) findViewById(R.id.field); 
    _button = (Button) findViewById(R.id.button); 
    _button.setOnClickListener(new ButtonClickHandler()); 

    _path = DATA_PATH + "/ocr.jpg"; 
}