package com.dynamsoft.tessocr; import java.io.File; import java.io.FileNotFoundException; import java.io.IOException; import java.io.InputStream; import java.text.SimpleDateFormat; import java.util.Date; import android.app.Activity; import android.app.ProgressDialog; import android.content.Intent; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.net.Uri; import android.os.Bundle; import android.os.Environment; import android.provider.MediaStore; import android.view.Menu; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.ImageView; import android.widget.TextView; public class OCRActivity extends Activity implements OnClickListener { private TessOCR mTessOCR; private TextView mResult; private ProgressDialog mProgressDialog; private ImageView mImage; private Button mButtonGallery, mButtonCamera; private String mCurrentPhotoPath; private static final int REQUEST_TAKE_PHOTO = 1; private static final int REQUEST_PICK_PHOTO = 2; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); mResult = (TextView) findViewById(R.id.tv_result); mImage = (ImageView) findViewById(R.id.image); mButtonGallery = (Button) findViewById(R.id.bt_gallery); mButtonGallery.setOnClickListener(this); mButtonCamera = (Button) findViewById(R.id.bt_camera); mButtonCamera.setOnClickListener(this); mTessOCR = new TessOCR(); } private void uriOCR(Uri uri) { if (uri != null) { InputStream is = null; try { is = getContentResolver().openInputStream(uri); Bitmap bitmap = BitmapFactory.decodeStream(is); mImage.setImageBitmap(bitmap); doOCR(bitmap); } catch (FileNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } finally { if (is != null) { try { is.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } } } } @Override protected void onResume() { // TODO Auto-generated method stub super.onResume(); Intent intent = getIntent(); if (Intent.ACTION_SEND.equals(intent.getAction())) { Uri uri = (Uri) intent .getParcelableExtra(Intent.EXTRA_STREAM); uriOCR(uri); } } @Override protected void onPause() { // TODO Auto-generated method stub super.onPause(); } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.main, menu); return true; } @Override protected void onDestroy() { // TODO Auto-generated method stub super.onDestroy(); mTessOCR.onDestroy(); } private void dispatchTakePictureIntent() { Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); // Ensure that there's a camera activity to handle the intent if (takePictureIntent.resolveActivity(getPackageManager()) != null) { // Create the File where the photo should go File photoFile = null; try { photoFile = createImageFile(); } catch (IOException ex) { // Error occurred while creating the File } // Continue only if the File was successfully created if (photoFile != null) { takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(photoFile)); startActivityForResult(takePictureIntent, REQUEST_TAKE_PHOTO); } } } /** * http://developer.android.com/training/camera/photobasics.html */ private File createImageFile() throws IOException { // Create an image file name String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss") .format(new Date()); String imageFileName = "JPEG_" + timeStamp + "_"; String storageDir = Environment.getExternalStorageDirectory() + "/TessOCR"; File dir = new File(storageDir); if (!dir.exists()) dir.mkdir(); File image = new File(storageDir + "/" + imageFileName + ".jpg"); // Save a file: path for use with ACTION_VIEW intents mCurrentPhotoPath = image.getAbsolutePath(); return image; } @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { // TODO Auto-generated method stub if (requestCode == REQUEST_TAKE_PHOTO && resultCode == Activity.RESULT_OK) { setPic(); } else if (requestCode == REQUEST_PICK_PHOTO && resultCode == Activity.RESULT_OK) { Uri uri = data.getData(); if (uri != null) { uriOCR(uri); } } } private void setPic() { // Get the dimensions of the View int targetW = mImage.getWidth(); int targetH = mImage.getHeight(); // Get the dimensions of the bitmap BitmapFactory.Options bmOptions = new BitmapFactory.Options(); bmOptions.inJustDecodeBounds = true; BitmapFactory.decodeFile(mCurrentPhotoPath, bmOptions); int photoW = bmOptions.outWidth; int photoH = bmOptions.outHeight; // Determine how much to scale down the image int scaleFactor = Math.min(photoW / targetW, photoH / targetH); // Decode the image file into a Bitmap sized to fill the View bmOptions.inJustDecodeBounds = false; bmOptions.inSampleSize = scaleFactor << 1; bmOptions.inPurgeable = true; Bitmap bitmap = BitmapFactory.decodeFile(mCurrentPhotoPath, bmOptions); mImage.setImageBitmap(bitmap); doOCR(bitmap); } @Override public void onClick(View v) { // TODO Auto-generated method stub int id = v.getId(); switch (id) { case R.id.bt_gallery: pickPhoto(); break; case R.id.bt_camera: takePhoto(); break; } } private void pickPhoto() { Intent intent = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI); startActivityForResult(intent, REQUEST_PICK_PHOTO); } private void takePhoto() { dispatchTakePictureIntent(); } private void doOCR(final Bitmap bitmap) { if (mProgressDialog == null) { mProgressDialog = ProgressDialog.show(this, "Processing", "Doing OCR...", true); } else { mProgressDialog.show(); } new Thread(new Runnable() { public void run() { final String result = mTessOCR.getOCRResult(bitmap); runOnUiThread(new Runnable() { @Override public void run() { // TODO Auto-generated method stub if (result != null && !result.equals("")) { mResult.setText(result); } mProgressDialog.dismiss(); } }); }; }).start(); } }