仕組みは次のとおりです。
ステップ1：次の行を追加して、buildLuminanceSource(..) indecode（byte [] data、int width、int height）の前にデータを回転させます
DecodeHandler.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);
_ステップ2：getFramingRectInPreview()。を変更します
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;
_手順3：initFromCameraParameters(...)の横長モードのチェックを無効にします
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;
}
_手順4：次の行を追加して、カメラを回転しますinsetDesiredCameraParameters(...)
CameraConfigurationManager.Java
_camera.setDisplayOrientation(90);
_ステップ5：アクティビティの方向をポートレートに設定することを忘れないでください。つまり、マニフェスト
すべての方向をサポートし、アクティビティを回転するときに自動的に変更するには、変更する必要があるのはCameraManager.Javaクラスだけです。
そして、このメソッドを削除しますgetCurrentOrientation（）fromCaptureActivity.Java
CameraManager.Javaで次の変数を作成します：
int resultOrientation;
これをopenDriver（..）メソッドに追加：
setCameraDisplayOrientation(context, Camera.CameraInfo.CAMERA_FACING_BACK, theCamera);//this can be set after camera.setPreviewDisplay(); in api13+.
****このメソッドを作成****リンク： http://developer.Android.com/reference/Android/hardware/Camera.html
public static void setCameraDisplayOrientation(Context context,int cameraId, Android.hardware.Camera camera) {
Android.hardware.Camera.CameraInfo info = new Android.hardware.Camera.CameraInfo();
Android.hardware.Camera.getCameraInfo(cameraId, info);
Display display = ((WindowManager)context.getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay();
int degrees = 0;
switch (display.getRotation()) {
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;
}
if (info.facing == Camera.CameraInfo.CAMERA_FACING_FRONT) {
resultOrientation = (info.orientation + degrees) % 360;
resultOrientation = (360 - resultOrientation) % 360; // compensate the mirror
} else { // back-facing
resultOrientation = (info.orientation - degrees + 360) % 360;
}
camera.setDisplayOrientation(resultOrientation);
}
****今getFramingRectInPreview（）****を変更します
if(resultOrientation == 180 || resultOrientation == 0){//to work with landScape and reverse landScape
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;
}else{
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;
}
そして、このメソッドを変更しますpublic PlanarYUVLuminanceSource buildLuminanceSource（..）
if(resultOrientation == 180 || resultOrientation == 0){//TODO: This is to use camera in landScape mode
// Go ahead and assume it's YUV rather than die.
return new PlanarYUVLuminanceSource(data, width, height, rect.left, rect.top, rect.width(), rect.height(), false);
}else{
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;
return new PlanarYUVLuminanceSource(rotatedData, width, height, rect.left, rect.top, rect.width(), rect.height(), false);
}
私のzxlibのフォークを使用できます https://github.com/rusfearuth/zxing-lib-without-landscape-only 。横モードのみを無効にしました。ランドスケープ/ポートレートを設定して、正しいカメラビューを表示できます。
_CameraConfigurationManager.Java_にcamera.setDisplayOrientation(90);を追加するとうまくいきました。
AnyOrientationCaptureActivityを作成し、デフォルトのCaptureActivityをオーバーライドすると、機能します。
public void scanCode() {
IntentIntegrator integrator = new IntentIntegrator(this);
integrator.setDesiredBarcodeFormats(CommonUtil.POSEIDON_CODE_TYPES);
integrator.setPrompt("Scan");
integrator.setCameraId(0);
integrator.setBeepEnabled(false);
integrator.setBarcodeImageEnabled(false);
integrator.setOrientationLocked(false);
//Override here
integrator.setCaptureActivity(AnyOrientationCaptureActivity.class);
integrator.initiateScan();
}
//create AnyOrientationCaptureActivity extend CaptureActivity
public class AnyOrientationCaptureActivity extends CaptureActivity {
}
マニフェストで定義する
<activity
Android:name=".views.AnyOrientationCaptureActivity"
Android:screenOrientation="fullSensor"
Android:stateNotNeeded="true"
Android:theme="@style/zxing_CaptureTheme"
Android:windowSoftInputMode="stateAlwaysHidden"></activity>
zxing 3.0の場合、作業用ライブラリ https://github.com/xiaowei4895/zxing-Android-portrait ポートレートモードの場合
ありがとうございました
最適なライブラリのみのソリューションはこれだと思います...
https://github.com/SudarAbisheck/ZXing-Orient
Maven形式のプロジェクトの依存関係としてbuild.gradleに含めることができます...
dependencies {
compile ''me.sudar:zxing-orient:2.1.1@aar''
}
これは、上記のソリューションの同期バージョンになるはずです
https://github.com/zxing/zxing/tree/4b124b109d90ac2960078ce68e15a39885fc1b5b
@royleeの変更に加えて、可能な限り最高のプレビューとQRコード認識品質を得るために、CameraConfigurationManager.Javaに以下を適用する必要がありました
diff --git a/Android/src/com/google/zxing/client/Android/camera/CameraConfigurationManager.Java b/Android/src/com/google/zxing/client/Android/camera/CameraConfigurationManager.Java
index cd9d0d8..4f12c8c 100644
--- a/Android/src/com/google/zxing/client/Android/camera/CameraConfigurationManager.Java
+++ b/Android/src/com/google/zxing/client/Android/camera/CameraConfigurationManager.Java
@@ -56,21 +56,24 @@ public final class CameraConfigurationManager {
Display display = manager.getDefaultDisplay();
int width = display.getWidth();
int height = display.getHeight();
- // We're landscape-only, and have apparently seen issues with display thinking it's portrait
+ // We're landscape-only, and have apparently seen issues with display thinking it's portrait
// when waking from sleep. If it's not landscape, assume it's mistaken and reverse them:
+ /*
if (width < height) {
Log.i(TAG, "Display reports portrait orientation; assuming this is incorrect");
int temp = width;
width = height;
height = temp;
}
+ */
screenResolution = new Point(width, height);
Log.i(TAG, "Screen resolution: " + screenResolution);
- cameraResolution = findBestPreviewSizeValue(parameters, screenResolution, false);
+ cameraResolution = findBestPreviewSizeValue(parameters, screenResolution, true);//
Log.i(TAG, "Camera resolution: " + cameraResolution);
}
void setDesiredCameraParameters(Camera camera) {
+ camera.setDisplayOrientation(90);
Camera.Parameters parameters = camera.getParameters();
if (parameters == null) {
@@ -99,7 +102,7 @@ public final class CameraConfigurationManager {
Point getScreenResolution() {
return screenResolution;
}
-
+
public void setFrontCamera(boolean newSetting) {
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
boolean currentSetting = prefs.getBoolean(PreferencesActivity.KEY_FRONT_CAMERA, false);
@@ -109,12 +112,12 @@ public final class CameraConfigurationManager {
editor.commit();
}
}
-
+
public boolean getFrontCamera() {
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
return prefs.getBoolean(PreferencesActivity.KEY_FRONT_CAMERA, false);
}
-
+
public boolean getTorch() {
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
return prefs.getBoolean(PreferencesActivity.KEY_FRONT_LIGHT, false);
@@ -181,7 +184,14 @@ public final class CameraConfigurationManager {
Camera.Size defaultSize = parameters.getPreviewSize();
bestSize = new Point(defaultSize.width, defaultSize.height);
}
+
+ // FIXME: test the bestSize == null case!
+ // swap width and height in portrait case back again
+ if (portrait) {
+ bestSize = new Point(bestSize.y, bestSize.x);
+ }
return bestSize;
+
}
private static String findSettableValue(Collection<String> supportedValues,