Zxing Vertical Screen Switch Android

Zxing Vertical Screen Switch Android

Zxingdemo downloaded on google is a horizontal screen state

I simply changed the activity to a vertical screen android:screenorientation= "Portrait" in Androidmanifest.xml.

The screen is positive, but the shooting screen is still sideways.

Checked some online information, combined with their own manual commissioning

Summarize here to share

Steps:

1) Change the screenorientation of <activity/> label captureactivity in Androidmanifest.xml to

android:screenorientation= "Portrait"

2) Replace Getframingrectinpreview () in the Cameramanager.java class with the original left right top bottom

            Vertical screen      rect.left = Rect.left * cameraresolution.y/screenresolution.x;       Rect.right = Rect.right * cameraresolution.y/screenresolution.x;       Rect.top = Rect.top * CAMERARESOLUTION.X/SCREENRESOLUTION.Y;       

3) void Setdesiredcameraparameters (Camera camera) method in Cameraconfigurationmanager.java

Increase before Setparameters

Camera.setdisplayorientation (90);

4) The decode (byte[] data, int width, int height) method in Decodehandler.java

Planaryuvluminancesource Source = Cameramanager.get (). Buildluminancesource (data, width, height);

Previously added:

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 is swapping, that's the difference to #11  width = height;  height = tmp;  data = Rotateddata;

5) Replace the Cameraconfigurationmanager initfromcameraparameters (camera camera) method with the following

This method prevents the screen from stretching after the vertical screen

/** * Reads, one time, values from the camera that is needed by the app. */void initfromcameraparameters (camera camera) { Camera.parameters Parameters = camera.getparameters ();p Reviewformat = Parameters.getpreviewformat (); previewformatstring = Parameters.get ("Preview-format"); LOG.D (TAG, "Default Preview format:" + Previewformat + '/' + previewformatstring); WindowManager manager = (WindowManager) context.getsystemservice (context.window_service);D isplay 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 all something like 480*320, and 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);}

This zxing horizontal screen to switch to vertical screen

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Resources

http://download.csdn.net/detail/aaawqqq/7278133