我修改了simpleOCR（https://github.com/GautamGupta/Simple-Android-OCR）和Tesseract
为我的申请。一切都很好，直到我突然开始得到SuperNotCalledException
我的LogCat中的消息。但是，super.onCreate(savedInstanceState);显然位于cameraOCR.class的onCreate方法（不是第一行）中。当我将super.onCreate(savedInstanceState);放在cameraOCR.class的onCreate的第一行时，启动cameraOCR的类将指向一个空白的白色窗口，而不是OCR的相机应用程序（应该发生在我的cameraOCR类中）。请查看我的代码，我不知道SuperNotCalledExcpetin在哪里出错。
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.zip.GZIPInputStream;
import android.app.Activity;
import android.content.Intent;
import android.content.res.AssetManager;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Matrix;
import android.media.ExifInterface;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import com.googlecode.tesseract.android.TessBaseAPI;
public class cameraOCR extends Activity {
public static final String PACKAGE_NAME = "com.datumdroid.android.ocr.simple";
public static final String DATA_PATH = Environment
.getExternalStorageDirectory().toString() + "/SimpleAndroidOCR/";
public static final String lang = "eng";
private static final String TAG = "SimpleAndroidOCR.java";
// 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");
}
}
}
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);
_path = DATA_PATH + "/ocr.jpg";
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(cameraOCR.PHOTO_TAKEN, _taken);
}
@Override
protected void onRestoreInstanceState(Bundle savedInstanceState) {
Log.i(TAG, "onRestoreInstanceState()");
if (savedInstanceState.getBoolean(cameraOCR.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 ) {
Intent InputPage = new Intent("InputPage");
InputPage.putExtra("ocrText", recognizedText);
startActivity(InputPage);
}
// Cycle done.
}
}
logcat的：
03-26 22:51:17.291: V/SimpleAndroidOCR.java(661): ERROR: Creation of directory /mnt/sdcard/SimpleAndroidOCR/ on sdcard failed
03-26 22:51:17.301: D/AndroidRuntime(661): Shutting down VM
03-26 22:51:17.311: W/dalvikvm(661): threadid=1: thread exiting with uncaught exception (group=0x409961f8)
03-26 22:51:17.355: E/AndroidRuntime(661): FATAL EXCEPTION: main
03-26 22:51:17.355: E/AndroidRuntime(661): android.app.SuperNotCalledException: Activity {com.shreyash.automaticsummarization/com.shreyash.automaticsummarization.cameraOCR} did not call through to super.onCreate()
03-26 22:51:17.355: E/AndroidRuntime(661): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1921)
03-26 22:51:17.355: E/AndroidRuntime(661): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1980)
03-26 22:51:17.355: E/AndroidRuntime(661): at android.app.ActivityThread.access$600(ActivityThread.java:122)
03-26 22:51:17.355: E/AndroidRuntime(661): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1146)
03-26 22:51:17.355: E/AndroidRuntime(661): at android.os.Handler.dispatchMessage(Handler.java:99)
03-26 22:51:17.355: E/AndroidRuntime(661): at android.os.Looper.loop(Looper.java:137)
03-26 22:51:17.355: E/AndroidRuntime(661): at android.app.ActivityThread.main(ActivityThread.java:4340)
03-26 22:51:17.355: E/AndroidRuntime(661): at java.lang.reflect.Method.invokeNative(Native Method)
03-26 22:51:17.355: E/AndroidRuntime(661): at java.lang.reflect.Method.invoke(Method.java:511)
03-26 22:51:17.355: E/AndroidRuntime(661): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
03-26 22:51:17.355: E/AndroidRuntime(661): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
03-26 22:51:17.355: E/AndroidRuntime(661): at dalvik.system.NativeStart.main(Native Method)
答案 0 :(得分：0)
查看您的日志。你有这个：
ERROR: Creation of directory /mnt/sdcard/SimpleAndroidOCR/ on sdcard failed
在onCreate中：
Log.v(TAG, "ERROR: Creation of directory " + path + " on sdcard failed");
return; // <-- When you reach this line : super.onCreate(...) was not called !