'TAG' has private access in 'android.support.v4.app.FragmentActivity'

Question

Almost everything in my activity is working fine, except for wherever TAG is referenced. TAG gets a red line and says: 'TAG' has private access in 'android.support.v4.app.FragmentActivity'.

MainActivity (without imports)-

public class MainActivity extends AppCompatActivity {     public static final String DATA_PATH = Environment             .getExternalStorageDirectory().toString() + "/MainActivity";     public static final String lang = "eng";      protected Button _button;     protected ImageView _image;     protected TextView _field;     protected String _path;     protected boolean _taken;      @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");                 }             }          }          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 = ( TextView ) findViewById( R.id.field );         _button = ( Button ) findViewById( R.id.button );         _button.setOnClickListener( new ButtonClickHandler() );          _path = Environment.getExternalStorageDirectory() + "/Login Data.jpg";     }      public class ButtonClickHandler implements View.OnClickListener     {         public void onClick( View view ){             startCameraActivity();         }     }      protected void startCameraActivity()     {         File file = new File( _path );         Uri outputFileUri = Uri.fromFile( file );          Intent intent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE );         intent.putExtra( MediaStore.EXTRA_OUTPUT, outputFileUri );          startActivityForResult( intent, 0 );     }      protected void onPhotoTaken()     {         _taken = true;          BitmapFactory.Options options = new BitmapFactory.Options();         options.inSampleSize = 4;          Bitmap bitmap = BitmapFactory.decodeFile( _path, options );         _image.setImageBitmap(bitmap);          _field.setVisibility( View.GONE );          ExifInterface exif = new ExifInterface(_path);          int exifOrientation = exif.getAttributeInt(                 ExifInterface.TAG_ORIENTATION,                 ExifInterface.ORIENTATION_NORMAL);          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;         }          if (rotate != 0) {             int w = bitmap.getWidth();             int h = bitmap.getHeight();              // Setting pre rotate             Matrix mtx = new Matrix();             mtx.preRotate(rotate);              // Rotating Bitmap & convert to ARGB_8888, required by tess             bitmap = Bitmap.createBitmap(bitmap, 0, 0, w, h, mtx, false);         }         bitmap = bitmap.copy(Bitmap.Config.ARGB_8888, true);          TessBaseAPI baseApi = new TessBaseAPI();         baseApi.init(DATA_PATH, lang);         baseApi.setImage(bitmap);         String recognizedText = baseApi.getUTF8Text();         baseApi.end();     }      @Override     protected void onSaveInstanceState( Bundle outState ) {         outState.putBoolean( MainActivity.PHOTO_TAKEN, _taken );     }      @Override     protected void onRestoreInstanceState( Bundle savedInstanceState)     {         Log.i( "MakeMachine", "onRestoreInstanceState()");         if( savedInstanceState.getBoolean( MainActivity.PHOTO_TAKEN ) ) {             onPhotoTaken();         }     } 

Answer 1

You should define a constant for your tag in MainActivity:

private static final String TAG = "MainActivity" 

Answer 2

try the following

private static final String TAG = MainActivity.class.getSimpleName(); 

You can use this field in your any Activity or Fragment.