英文:
RBGLuminanceSource.toString is throwing StackOverflowError when dimensions of image are big
问题
我不明白为什么会出现 StackoverflowError。我试图从图像构建位图以扫描 QR 码。decode() 方法中的 source 是按照标准方式构建的：
if (bitmap != null) {
int[] intArray = new int[bitmap.getWidth() * bitmap.getHeight()];
bitmap.getPixels(intArray, 0, bitmap.getWidth(), 0, 0, bitmap.getWidth(), bitmap.getHeight());
return new RGBLuminanceSource(bitmap.getWidth(), bitmap.getHeight(), intArray);
}
然后 decode() 抛出错误：
source: Method threw 'java.lang.StackOverflowError' exception. Cannot evaluate com.google.zxing.RGBLuminanceSource.toString()
private QRCodeMultiReader qrCodeReader;
public void decode(LuminanceSource source, ScannerResultListener resultListener) {
try {
BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
String decodedContent = qrCodeReader.decode(bitmap, hints).getText();
Timber.d("qr code scanner has successfully decoded content: [%s]", decodedContent);
resultListener.onScanningSuccess(decodedContent);
} catch (ReaderException re) {
Timber.d(re.getMessage(), "qr code scanner can not decode code");
resultListener.onScanningFailure();
} finally {
qrCodeReader.reset();
}
}
只有在上传具有较大尺寸（例如 1242x2688 像素）的图像时才会出现此问题。当我将上传的图像缩小到高度例如 2160 像素时，一切正常，图像被正确扫描。我找不到有关 zxing 尺寸限制的任何信息。
有人知道是为什么吗？
英文:
I cannot understand why I'm getting StackoverflowError. I'm trying to build bitmap from an image to scan QR code. source from decode() method is build in standard way:
if (bitmap != null) {
int[] intArray = new int[bitmap.getWidth() * bitmap.getHeight()];
bitmap.getPixels(intArray, 0, bitmap.getWidth(), 0, 0, bitmap.getWidth(), bitmap.getHeight());
return new RGBLuminanceSource(bitmap.getWidth(), bitmap.getHeight(), intArray);
And than decode() throws error:
source: Method threw 'java.lang'StackOverflowError' exception. Cannot evaluate com.google.zxing.RGBLuminanceSource.toString()
private QRCodeMultiReader qrCodeReader;
public void decode(LuminanceSource source, ScannerResultListener resultListener) {
try {
BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
String decodedContent = qrCodeReader.decode(bitmap, hints).getText();
Timber.d("qr code scanner has successfully decoded content: [%s]", decodedContent);
resultListener.onScanningSuccess(decodedContent);
} catch (ReaderException re) {
Timber.d(re.getMessage(), "qr code scanner can not decode code");
resultListener.onScanningFailure();
} finally {
qrCodeReader.reset();
}
}
It happens only when I upload image with big dimensions (e. g. 1242x2688px). When I downsize uploaded image to height for example 2160px, everything is ok., and image is scanned properly.
I cannot find anything about zxing dimensional restrictions.
Does anybody know why is that?
答案1
得分: 0
问题已解决。
我不得不将Zxing库升级到更新的版本。在我的问题中，3.3.1版本已足够。
但更新的库需要SDK 19+。
英文:
Problem solved.
I had to upgrade Zxing libs to newer version. In my problem 3.3.1 was sufficient.
But newer libs require SDK 19+.
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