Zxing 二维码识别库 横屏修改成竖屏

camera.setDisplayOrientation(90);

不知道为什么,Zxing用的是横屏,也许是因为外国人习惯横屏拍照的原因把,但是,在国内,很多人不习惯,呵呵,我用着也不习惯.所以还是该成竖屏,以适合国内人的习惯吧.

修改方法:

1.在DecodeHandler.java中,修改decode方法

PlanarYUVLuminanceSource source = CameraManager.get().buildLuminanceSource(data, width, height);

byte[] rotatedData = new byte[data.length];

for (int y = 0; y < height; y++) {

 for (int x = 0; x < width; x++)
  rotatedData[x * height + height - y - 1] = data[x + y * width];

 }

int tmp = width; // Here we are swapping, that's the difference to #11
width = height;
height = tmp;
PlanarYUVLuminanceSource source = CameraManager.get().buildLuminanceSource(rotatedData, width, height);

2.在CameraManager.java中,修改代码:

// 注释掉
// rect.left = rect.left * cameraResolution.x / screenResolution.x;
// rect.right = rect.right * cameraResolution.x / screenResolution.x;
// rect.top = rect.top * cameraResolution.y / screenResolution.y;
// rect.bottom = rect.bottom * cameraResolution.y / screenResolution.y;

//修改成这样的
rect.left = rect.left * cameraResolution.y / screenResolution.x;
rect.right = rect.right * cameraResolution.y / screenResolution.x;
rect.top = rect.top * cameraResolution.x / screenResolution.y;
rect.bottom = rect.bottom * cameraResolution.x / screenResolution.y;

3.在CameraConfigurationManager.java中,在setDesiredCameraParameters方法中添加一句

camera.setDisplayOrientation(90);

4.在AndroidManifest.xml中,把Activity的属性android:screenOrientation="landscape" 改为

android:screenOrientation="portrait"

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