Transfer data to onSuccess() method

Question

In the following code I write the result of a procedure into a Text field. The code is executed as part of a task.

I want "transfer" text (String "test") to onSuccess() method, so that I can use it within onSuccess(). I do not want to do that via static / global variables.

My question is: can I transfer data to the onSucess() method?

private void recognizeTextFromImage(InputImage image) {
 String test = "Test"
 TextRecognizer recognizer = TextRecognition.getClient(TextRecognizerOptions.DEFAULT_OPTIONS);
 Task<Text> task = recognizer.process(image);
 // recognizer.process(image)
 task
 .addOnSuccessListener(
 new OnSuccessListener<Text>() {
 @Override
 public void onSuccess(Text texts) {
 recognizedText = processTextRecognitionResult(texts);
 editText_Test.setText(test + recognizedText);
 Log.d(TAG,"Successful: " + recognizedText);
 }
 })
 .addOnFailureListener(
 new OnFailureListener() {
 }
 });
 recognizer.close();
}

• rzwitserloot: Did you actually run the code you pasted? You can just use test in there. It'll work fine.
• Micky: Yes :-) But variable "test" is some kind of "global". If another caller starts the method, the data will be overwritten and the "old" thread would get the wrong data. I need this data and variable "locally".
• rzwitserloot: Right before task.addOnSuccessListener(..., write: String myTest = test; and then use myTest.
• Micky: @rzwitserloot, thank you. Is there a difference to my code? Maybe I did not understand you correctly.

Answer 1

Variable "test" is not some kind of "global". It is a local variable by definition, and as such, a new one will be instantiated every time a caller starts the method. I can see no concurrency issue with just using the test variable within onSuccess, unless TextRecognizer is implemented in some really weird way.

• Micky: Yes. Thank you. My fault. It works now as expected.