Question

在我的应用程序中，在纵向模式下从相机中单击图像时，图像会旋转，这只适用于三星设备，其余情况下工作正常。我在研究堆栈溢出后实现了以下代码：

android:clipChildren

此代码可帮助我解决三星中的问题，但现在当从相机点击图像时，由于这段代码，它会在其他设备中旋转。

请告诉我如何解决此问题。

Answer 1

如果您确信这只是三星设备问题，您可以检查设备制作并将其添加到if（...）条件。 This库可以提供很大的帮助。

另请参阅Jared Rummler对this问题的回答：

但如果这是设备特定问题，它也可能在其他设备上发生，或者最终可能会在较新的Samsung设备操作系统更新中得到纠正。保持良好的检查。

Answer 2

传递返回度以转换位图，

try {
       ExifInterface exif = new ExifInterface(imgPath);  
        String rotationAmount = exif
                .getAttribute(ExifInterface.TAG_ORIENTATION);
        if (!TextUtils.isEmpty(rotationAmount)) {
            int rotationParam = Integer.parseInt(rotationAmount);
            switch (rotationParam) {
            case ExifInterface.ORIENTATION_NORMAL:
                return 0;
            case ExifInterface.ORIENTATION_ROTATE_90:
                return 90;
            case ExifInterface.ORIENTATION_ROTATE_180:
                return 180;
            case ExifInterface.ORIENTATION_ROTATE_270:
                return 270;
            default:
                return 0;
            }
        } else {
            return 0;
        }
    } catch (Exception ex) {
        return 0;
    }

Answer 3

使用以下课程

 String path="path of your image";

 imageview.setImageBitmap(ExifUtil.rotateBitmap(path, BitmapFactory.decodeFile(path)));

<强> ExifUtil.java

public class ExifUtil {
    /**
     * @see http://sylvana.net/jpegcrop/exif_orientation.html
     */
    public static Bitmap rotateBitmap(String src, Bitmap bitmap) {
        try {
            int orientation = getExifOrientation(src);

            if (orientation == 1) {
                return bitmap;
            }

            Matrix matrix = new Matrix();
            switch (orientation) {
            case 2:
                matrix.setScale(-1, 1);
                break;
            case 3:
                matrix.setRotate(180);
                break;
            case 4:
                matrix.setRotate(180);
                matrix.postScale(-1, 1);
                break;
            case 5:
                matrix.setRotate(90);
                matrix.postScale(-1, 1);
                break;
            case 6:
                matrix.setRotate(90);
                break;
            case 7:
                matrix.setRotate(-90);
                matrix.postScale(-1, 1);
                break;
            case 8:
                matrix.setRotate(-90);
                break;
            default:
                return bitmap;
            }

            try {
                Bitmap oriented = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);
                bitmap.recycle();
                return oriented;
            } catch (OutOfMemoryError e) {
                e.printStackTrace();
                return bitmap;
            }
        } catch (IOException e) {
            e.printStackTrace();
        } 

        return bitmap;
    }

    private static int getExifOrientation(String src) throws IOException {
        int orientation = 1;

        try {
            /**
             * if your are targeting only api level >= 5
             * ExifInterface exif = new ExifInterface(src);
             * orientation = exif.getAttributeInt(ExifInterface.TAG_ORIENTATION, 1);
             */
            if (Build.VERSION.SDK_INT >= 5) {
                Class<?> exifClass = Class.forName("android.media.ExifInterface");
                Constructor<?> exifConstructor = exifClass.getConstructor(new Class[] { String.class });
                Object exifInstance = exifConstructor.newInstance(new Object[] { src });
                Method getAttributeInt = exifClass.getMethod("getAttributeInt", new Class[] { String.class, int.class });
                Field tagOrientationField = exifClass.getField("TAG_ORIENTATION");
                String tagOrientation = (String) tagOrientationField.get(null);
                orientation = (Integer) getAttributeInt.invoke(exifInstance, new Object[] { tagOrientation, 1});
            }
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        } catch (SecurityException e) {
            e.printStackTrace();
        } catch (NoSuchMethodException e) {
            e.printStackTrace();
        } catch (IllegalArgumentException e) {
            e.printStackTrace();
        } catch (InstantiationException e) {
            e.printStackTrace();
        } catch (IllegalAccessException e) {
            e.printStackTrace();
        } catch (InvocationTargetException e) {
            e.printStackTrace();
        } catch (NoSuchFieldException e) {
            e.printStackTrace();
        }

        return orientation;
    }
}

仅在Samasung设备中从相机单击时图像旋转

3 个答案: