在Android Zxing相机在人像模式 [英] Zxing Camera in Portrait mode on Android
问题描述
我要显示在人像
取向 Zxing
的摄像头。
I want to show portrait
orientation on Zxing
's camera.
如何才能做到这一点?
推荐答案
下面是它如何工作的。
第1步:添加以下行到的德code(byte []的数据,诠释前旋转数据buildLuminanceSource(..)
宽度,高度INT)的
Step 1: Add following lines to rotate data before buildLuminanceSource(..)
in decode(byte[] data, int width, int height)
德codeHandler.java:
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;
width = height;
height = tmp;
PlanarYUVLuminanceSource source = activity.getCameraManager().buildLuminanceSource(rotatedData, width, height);
第2步:修改 getFramingRectIn preVIEW()
Step 2: Modify getFramingRectInPreview()
.
CameraManager.java
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;
第3步:禁用检查景观模式 initFromCameraParameters(...)
Step 3: Disable the check for Landscape Mode in initFromCameraParameters(...)
CameraConfigurationManager.java
//remove the following
if (width < height) {
Log.i(TAG, "Display reports portrait orientation; assuming this is incorrect");
int temp = width;
width = height;
height = temp;
}
第四步:添加下面一行到 setDesiredCameraParameters旋转摄像头(...)
Step 4: Add following line to rotate camera insetDesiredCameraParameters(...)
CameraConfigurationManager.java
camera.setDisplayOrientation(90);
第五步:不要忘记设置的活动方向为纵向。即:清单
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