我正在尝试从Android中任何捕获的图像中提取文本。因此,我创建了一个访问摄像头的 Intent ,并使用startActivityForResult
启动了它。
这是我的onActivityResult
代码:
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if(requestCode == REQUEST_IMAGE_CAPTURE && resultCode == RESULT_OK) {
String state = Environment.getExternalStorageState();
if (Environment.MEDIA_MOUNTED.equals(state)) {
Bundle extras = data.getExtras();
Bitmap bitmap = (Bitmap) extras.get("data");
TextView res = (TextView) findViewById(R.id.hello);
//imageView.setImageBitmap(imageBitmap);
//Image image = ImageIO.read(imageFile);
//BufferedImage buffimg = (BufferedImage) image;
//BufferedImage img = ImageHelper.convertImageToGrayscale(buffimg);
//ITesseract instance = new Tesseract(); // JNA Interface Mapping
//ITesseract instance = new Tesseract1(); // JNA Direct Mapping
//TessDataManager.initTessTrainedData(context);
if(isStoragePermissionGranted() == true) {
TessBaseAPI tessBaseAPI = new TessBaseAPI();
String path = Environment.getExternalStorageDirectory() + "/";
//String path = "/mnt/sdcard/";
tessBaseAPI.setDebug(true);
tessBaseAPI.init(path, "eng");
tessBaseAPI.setImage(bitmap);
String text = tessBaseAPI.getUTF8Text();
tessBaseAPI.end();
res.setText(text);
}
}
else
{
TextView res = (TextView) findViewById(R.id.hello);
res.setText("Well damn");
}
}
}
public boolean isStoragePermissionGranted() {
if (Build.VERSION.SDK_INT >= 23) {
if (checkSelfPermission(android.Manifest.permission.READ_EXTERNAL_STORAGE)
== PackageManager.PERMISSION_GRANTED) {
Log.v(TAG,"Permission is granted");
return true;
} else {
Log.v(TAG,"Permission is revoked");
ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.READ_EXTERNAL_STORAGE}, 1);
return false;
}
}
else { //permission is automatically granted on sdk<23 upon installation
Log.v(TAG, "Permission is granted");
return true;
}
}
我收到的错误是:
java.lang.RuntimeException: Unable to resume activity {com.example.abc.snaptravel/com.example.abc.snaptravel.MainActivity}: java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=1, result=-1, data=Intent { act=inline-data dat=content: (has extras) }} to activity {com.example.abc.snaptravel/com.example.abc.snaptravel.MainActivity}: java.lang.IllegalArgumentException: Data path does not exist!
具体来说:
Data path does not exist
我对这个问题有很多了解,并尝试了许多不同的解决方案。我也尝试过在路径名中添加和不添加
"/tessdata/"
。如果您有任何建议,我将不胜感激。谢谢你!
最佳答案
好吧,我以为Environment.getExternalStorageDirectory()
指向我的SD卡,但事实并非如此。它指向我的内部存储。那是我错的地方。我将tessdata文件夹复制到了内部存储中,现在可以正常使用了。