Nexus 5x 6.0系统，部分三星机器，扫描框扫出来的图像颠倒 about android-zxinglibrary HOT 10 OPEN

+1

from android-zxinglibrary.

+1

from android-zxinglibrary.

我的一个6.0系统的机器，也出现了图像颠倒的问题，是怎么回事 @yipianfengye

from android-zxinglibrary.

修改部分源代码后解决问题：

` public void openDriver(Activity activity, SurfaceHolder holder) throws IOException {
if (camera == null) {
camera = Camera.open();
if (camera == null) {
throw new IOException();
}
android.hardware.Camera.CameraInfo info = new android.hardware.Camera.CameraInfo();
android.hardware.Camera.getCameraInfo (0 , info);
int rotation = activity.getWindowManager ().getDefaultDisplay ().getRotation ();
int degrees = 0;
switch (rotation) {
case Surface.ROTATION_0:
degrees = 0;
break;
case Surface.ROTATION_90:
degrees = 90;
break;
case Surface.ROTATION_180:
degrees = 180;
break;
case Surface.ROTATION_270:
degrees = 270;
break;
}
int result;
if (info.facing == Camera.CameraInfo.CAMERA_FACING_FRONT) {
result = (info.orientation + degrees) % 360;
result = (360 - result) % 360; // compensate the mirror
} else {
// back-facing
result = ( info.orientation - degrees + 360) % 360;
}
camera.setDisplayOrientation (result);
camera.setPreviewDisplay(holder);

        if (!initialized) {
            initialized = true;
            configManager.initFromCameraParameters(camera);
        }
        configManager.setDesiredCameraParameters(camera);

        //FIXME
        //     SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
        //�Ƿ�ʹ��ǰ��

// if (prefs.getBoolean(PreferencesActivity.KEY_FRONT_LIGHT, false)) {
// FlashlightManager.enableFlashlight();
// }
FlashlightManager.enableFlashlight();
}
}`

from android-zxinglibrary.

这个要在哪里改？ @wangran99

from android-zxinglibrary.

@bruceyu1994
改这个文件com.uuzuche.lib_zxing.camera.CameraConfigurationManager中的setDesiredCameraParameters方法，作者好像写成固定旋转角度了。
https://github.com/yipianfengye/android-zxingLibrary/blob/master/lib-zxing/src/main/java/com/uuzuche/lib_zxing/camera/CameraConfigurationManager.java

将camera.setDisplayOrientation(90);改成 camera.setDisplayOrientation(getDisplayOrientation());

public int getDisplayOrientation() {
    Camera.CameraInfo info = new Camera.CameraInfo();
    Camera.getCameraInfo(Camera.CameraInfo.CAMERA_FACING_BACK, info);
    WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
    Display display = wm.getDefaultDisplay();

    int rotation = display.getRotation();
    int degrees = 0;
    switch (rotation) {
        case Surface.ROTATION_0:
            degrees = 0;
            break;
        case Surface.ROTATION_90:
            degrees = 90;
            break;
        case Surface.ROTATION_180:
            degrees = 180;
            break;
        case Surface.ROTATION_270:
            degrees = 270;
            break;
    }

    int result;
    if (info.facing == Camera.CameraInfo.CAMERA_FACING_FRONT) {
        result = (info.orientation + degrees) % 360;
        result = (360 - result) % 360;
    } else {
        result = (info.orientation - degrees + 360) % 360;
    }
    return result;
}

from android-zxinglibrary.

在解码的地方也要转成固定角度吧。不然解码偏移了。

from android-zxinglibrary.

@wangran99 哥们 你好，还在关注这个库吗。现在也碰到这个问题，照你说的修改后，摄像头方向显示正确了，但是扫描很不给力额。很难扫出来，请问有其他啥办法没

from android-zxinglibrary.

@wangran99 哥们 你好，还在关注这个库吗。现在也碰到这个问题，照你说的修改后，摄像头方向显示正确了，但是扫描很不给力额。很难扫出来，请问有其他啥办法没

忽然收到个邮件，发现我居然还回复这个了，我改用BGA的扫码了，封装得不错。一个view解决问题。zxing，zbar版本都有。

from android-zxinglibrary.

@jiechic 好的 我了解下，谢谢你

from android-zxinglibrary.