Android 使用ZXing扫描在部分手机上扫描变形解决办法

项目中用ZXing做的二维码扫描,在部分6.0的手机上扫描变形了，网上找了老半天终于是修改成功了，记录下解决办法。

修改CameraConfigurationManager.java下的findBestPreviewSizeValue()方法中的一句代码：

float newDiff = Math.abs(screenResolution.x * 1.0f / newY - screenResolution.y * 1.0f / newX);

private static Point findBestPreviewSizeValue(
            CharSequence previewSizeValueString, Point screenResolution) {
int bestX = 0;
int bestY = 0;
float diff = Integer.MAX_VALUE;
for (String previewSize : COMMA_PATTERN.split(previewSizeValueString)) {

            previewSize = previewSize.trim();
int dimPosition = previewSize.indexOf('x');
if (dimPosition < 0) {
                Log.w(TAG, "Bad preview-size: " + previewSize);
continue;
            }

int newX;
int newY;
try {
                newX = Integer.parseInt(previewSize.substring(0, dimPosition));
                newY = Integer.parseInt(previewSize.substring(dimPosition + 1));
            } catch (NumberFormatException nfe) {
                Log.w(TAG, "Bad preview-size: " + previewSize);
continue;
            }

// int newDiff = Math.abs(newX - screenResolution.x) + Math.abs(newY - screenResolution.y);
float newDiff = Math.abs(screenResolution.x * 1.0f / newY - screenResolution.y * 1.0f / newX);
if (newDiff == 0) {
                bestX = newX;
                bestY = newY;
break;
            } else if (newDiff < diff) {
                bestX = newX;
                bestY = newY;
                diff = newDiff;
            }

        }

if (bestX > 0 && bestY > 0) {
return new Point(bestX, bestY);
        }
return null;
    }