使用google Zxing 二维码 竖屏拉伸问题解决方法
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Zxing是google提供的二维码扫描工程
默认是横屏的 转换成竖屏后图片出现拉伸
这里提供解决办法:
Zxing 修改 CameraConfigurationManager.java文件的
void initFromCameraParameters(Camera camera)方法
在 Log.d(TAG, "Screen resolution: " + screenResolution);这句之后增加
[java] view plaincopy
Point screenResolutionForCamera = new Point();
screenResolutionForCamera.x = screenResolution.x;
screenResolutionForCamera.y = screenResolution.y;
// preview size is always something like 480*320, other 320*480
if (screenResolution.x < screenResolution.y) {
screenResolutionForCamera.x = screenResolution.y;
screenResolutionForCamera.y = screenResolution.x;
}
在把其后的
[java] view plaincopy
cameraResolution = getCameraResolution(parameters, screenResolution);
中的screenResolution改为 screenResolutionForCamera
如下:
[java] view plaincopy
cameraResolution = getCameraResolution(parameters, screenResolutionForCamera);
修改后函数:
void initFromCameraParameters(Camera camera) {
Camera.Parameters parameters = camera.getParameters();
previewFormat = parameters.getPreviewFormat();
previewFormatString = parameters.get("preview-format");
WindowManager manager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
Display display = manager.getDefaultDisplay();
screenResolution = new Point(display.getWidth(), display.getHeight());
//如果是竖屏,宽高反一下。
Point screenResolutionForCamera = new Point();
screenResolutionForCamera.x = screenResolution.x;
screenResolutionForCamera.y = screenResolution.y;
// preview size is always something like 480*320, other 320*480
if (screenResolution.x < screenResolution.y) {
screenResolutionForCamera.x = screenResolution.y;
screenResolutionForCamera.y = screenResolution.x;
}
//cameraResolution = getCameraResolution(parameters, screenResolution);
cameraResolution = getCameraResolution(parameters, screenResolutionForCamera);
double beish = 0;
if (cameraResolution.y >= 700) {
beish = 5.4;
} else if (cameraResolution.y >= 600 && cameraResolution.y < 700) {
beish = 6;
} else if (cameraResolution.y >= 500 && cameraResolution.y < 600) {
beish = 6.7;
} else if (cameraResolution.y >= 400 && cameraResolution.y < 500) {
beish = 7.4;
} else if (cameraResolution.y >= 300 && cameraResolution.y < 400) {
beish = 8;
} else if (cameraResolution.y < 300) {
beish = 8.7;
}
if (cameraResolution.y >= 600) {
System.out.println(beish);
// cameraResolution.y = cameraResolution.y
// - (BigDecimal.valueOf(cameraResolution.y).divide(BigDecimal.valueOf(beish)).intValue());
}
}
Camera.Parameters parameters = camera.getParameters();
previewFormat = parameters.getPreviewFormat();
previewFormatString = parameters.get("preview-format");
WindowManager manager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
Display display = manager.getDefaultDisplay();
screenResolution = new Point(display.getWidth(), display.getHeight());
//如果是竖屏,宽高反一下。
Point screenResolutionForCamera = new Point();
screenResolutionForCamera.x = screenResolution.x;
screenResolutionForCamera.y = screenResolution.y;
// preview size is always something like 480*320, other 320*480
if (screenResolution.x < screenResolution.y) {
screenResolutionForCamera.x = screenResolution.y;
screenResolutionForCamera.y = screenResolution.x;
}
//cameraResolution = getCameraResolution(parameters, screenResolution);
cameraResolution = getCameraResolution(parameters, screenResolutionForCamera);
double beish = 0;
if (cameraResolution.y >= 700) {
beish = 5.4;
} else if (cameraResolution.y >= 600 && cameraResolution.y < 700) {
beish = 6;
} else if (cameraResolution.y >= 500 && cameraResolution.y < 600) {
beish = 6.7;
} else if (cameraResolution.y >= 400 && cameraResolution.y < 500) {
beish = 7.4;
} else if (cameraResolution.y >= 300 && cameraResolution.y < 400) {
beish = 8;
} else if (cameraResolution.y < 300) {
beish = 8.7;
}
if (cameraResolution.y >= 600) {
System.out.println(beish);
// cameraResolution.y = cameraResolution.y
// - (BigDecimal.valueOf(cameraResolution.y).divide(BigDecimal.valueOf(beish)).intValue());
}
}
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