The is probably something missing in your Manifest file.
This means that the IOnActivityResult object was released before the activity was resumed. Make sure to make it a global variable.
Here it is - attached:
#Region Project Attributes
#ApplicationLabel: b4aTRA
#VersionCode: 1
#VersionName:
'SupportedOrientations possible values: unspecified, landscape or portrait.
#SupportedOrientations: portrait
#CanInstallToExternalStorage: False
#End Region
#AdditionalRes: ..\res
#AdditionalRes: ..\resource
#Region Activity Attributes
#FullScreen: False
#IncludeTitle: True
#End Region
Sub Process_Globals
End Sub
Sub Globals
Dim scan As OcrLib
Private Button1 As Button
End Sub
Sub Activity_Create(FirstTime As Boolean)
Activity.LoadLayout("main")
scan.Initialize("scan")
End Sub
Sub Activity_Resume
End Sub
Sub Activity_Pause (UserClosed As Boolean)
End Sub
Sub Button1_Click
scan.startDetection
End Sub
Sub scan_scanned_text(scannedText As String)
Log("Scanned text = " & scannedText)
End Sub <activity android:name="com.tuts.prakash.simpleocr.MainActivity"
android:configChanges="keyboardHidden|orientation">
</activity> android:orientation="horizontal"
android:screenOrientation="landscape"public class MainActivity extends AppCompatActivity {
private static final String TAG = "MainActivity";
static AtomicBoolean surfaceExists = new AtomicBoolean(false);
private static final int CAMERA_REQUEST_ID = 2122;
public static final String mTextBlock = "String";
private SurfaceHolder mSurfaceHolder;
Camera mCamera;
Context mContext;
SurfaceView mCameraView;
TextView mTextView;
CameraSource mCameraSource;
CameraInfo mCameraInfo;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
mTextView = (TextView)findViewById(R.id.text_view);
mCameraView = (SurfaceView)findViewById(R.id.surfaceView);
startCameraSource();
}
private void startCameraSource() {
TextRecognizer textRecognizer = new TextRecognizer.Builder(this).build();
if (textRecognizer.isOperational()) {
mCameraSource = new CameraSource.Builder(this, textRecognizer)
.setFacing(CameraSource.CAMERA_FACING_BACK)
.setRequestedPreviewSize(1280, 1024)
.setRequestedFps(2.0f)
.setAutoFocusEnabled(true)
.build();
mCameraView.getHolder().addCallback(new SurfaceHolder.Callback() {
@Override
public void surfaceCreated(SurfaceHolder surfaceHolder) {
try {
if (ActivityCompat.checkSelfPermission(MainActivity.this,Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) {
ActivityCompat.requestPermissions(MainActivity.this, new String[]{Manifest.permission.CAMERA},CAMERA_REQUEST_ID);
return;
}
mCameraSource.start(mCameraView.getHolder());
} catch (IOException e) {
e.printStackTrace();
}
}
@Override
public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
}
@Override
public void surfaceDestroyed(SurfaceHolder surfaceHolder) {
mCameraSource.stop();
}
});
textRecognizer.setProcessor(new Detector.Processor<TextBlock>() {
@Override
public void release() {
}
@Override
public void receiveDetections(Detector.Detections<TextBlock> detections) {
final SparseArray<TextBlock> items = detections.getDetectedItems();
mTextView.post(new Runnable() {
@Override
public void run() {
if (items.size() == 0) {
mTextView.setText("");
mTextView.setVisibility(View.INVISIBLE);
} else {
StringBuilder stringBuilder = new StringBuilder();
TextBlock text = null;
for (int i = 0; i < items.size(); i++) {
if ((i < items.size()) && (i < 10)) {
String str = ((TextBlock)items.valueAt(i)).getValue().replaceAll("[^0-9]", "");
Log.d("tag", "Value: " + str);
if ((str.length() == 16) || (str.length() == 19)) { //read card No.
BA.Log("Value: " + str);
Intent mIntent = new Intent();
mIntent.putExtra(mTextBlock, str);
MainActivity.this.setResult(0, mIntent);
items.clear();
finish(); // close activaty
}
}
else
{
return;
}
}
mTextView.setText(stringBuilder.toString());
mTextView.setVisibility(View.VISIBLE);
}
}
});
}
});
} else {
Log.d(getClass().getSimpleName(), "Text Recognizer isn't ready yet");
}
}
}public class traWrapper extends AbsObjectWrapper<MainActivity> {
@Hide
public static BA ba;
@Hide
public static String eventName;
private static MainActivity cv;
private IOnActivityResult ion;
private static final int RC_OCR_CAPTURE = 9003;
Intent mIntent;
public void Initialize(BA paramBA, String paramString) {
eventName = paramString.toLowerCase(BA.cul);
ba = paramBA;
MainActivity cv = new MainActivity();
String str = paramString.toLowerCase(BA.cul);
setObject(cv);
mIntent = new Intent(BA.applicationContext, MainActivity.class);
}
public void startDetection() {
ion = new IOnActivityResult() {
@Override
public void ResultArrived(int arg0, Intent data) {
BA.Log("ResultArrived");
if (data != null) {
String text = data.getStringExtra(MainActivity.mTextBlock);
BA.Log("Text read: " + text);
if (traWrapper.ba.subExists(traWrapper.eventName + "_scanned_text")) {
traWrapper.ba.raiseEventFromDifferentThread(this, null, 0, traWrapper.eventName + "_scanned_text", true, new Object[] {text});
}
} else {
//statusMessage.setText(R.string.ocr_failure);
BA.Log("No Text captured, intent data is null");
}
}
};
ba.startActivityForResult(ion, mIntent);
}
}
