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Zxing 竖屏切换 android
Zxing 竖屏切换 android
在google上下载的ZxingDemo 为横屏状态
我简单的在Androidmanifest.xml把Activity换成竖屏android:screenOrientation="portrait"
屏幕虽然正了 但是屏幕上显示的拍摄画面还是横着的
查了一些网上的资料 结合自己手工调试
在这里总结分享一下
步骤:
1) 在AndroidManifest.xml中把 <Activity />标签 CaptureActivity 的screenOrientation修改为
android:screenOrientation="portrait"
2) 在CameraManager.java类中的getFramingRectInPreview()替换掉原先的 left right top bottom
//竖屏 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void setDesiredCameraParameters(Camera camera)方法
在setParameters之前增加
camera.setDisplayOrientation(90);
4) 在DecodeHandler.java中的 decode(byte[] data, int width, int height)方法在
PlanarYUVLuminanceSource source = CameraManager.get().buildLuminanceSource(data, width, height);
之前添加:
byte[] rotatedData = http://www.mamicode.com/new byte[data.length]; >
5) 将CameraConfigurationManager的 initFromCameraParameters(Camera camera)方法整个替换如下该方法防止竖屏后屏幕拉伸
/** * Reads, one time, values from the camera that are needed by the app. */ void initFromCameraParameters(Camera camera) { Camera.Parameters parameters = camera.getParameters(); previewFormat = parameters.getPreviewFormat(); previewFormatString = parameters.get("preview-format"); Log.d(TAG, "Default preview format: " + previewFormat + ‘/‘ + previewFormatString); WindowManager manager = (WindowManager) context .getSystemService(Context.WINDOW_SERVICE); Display display = manager.getDefaultDisplay(); screenResolution = new Point(display.getWidth(), display.getHeight()); Log.d(TAG, "Screen resolution: " + screenResolution); 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, screenResolutionForCamera); // cameraResolution = getCameraResolution(parameters, screenResolution); Log.d(TAG, "Camera resolution: " + screenResolution); }
至此Zxing 横屏就切换为竖屏
不足之处请在下方留言 谢谢
希望对您有用
资源下载地址
http://download.csdn.net/detail/aaawqqq/7278133