在android中从服务器下载图像后，图像方向会发生变化

当我使用各自的url从服务器下载图像时，图像得到了完美的下载，但问题是下载的图像已经改变了方向，如何处理这个问题，我如何改变图像的方向？提前感谢。

首先将该图像保存到SD卡，然后尝试下面的代码，看看它是否工作。对我来说，它工作得很好

File f = new File(filePath);
ExifInterface exif = new ExifInterface(f.getPath());
int orientation = exif.getAttributeInt(ExifInterface.TAG_ORIENTATION, ExifInterface.ORIENTATION_NORMAL);

int angle = 0;

if (orientation == ExifInterface.ORIENTATION_ROTATE_90) {
angle = 90;
} else if (orientation == ExifInterface.ORIENTATION_ROTATE_180) {
angle = 180;
} else if (orientation == ExifInterface.ORIENTATION_ROTATE_270) {
angle = 270;
}

Matrix mat = new Matrix();
mat.postRotate(angle);
BitmapFactory.Options options = new BitmapFactory.Options();
options.inSampleSize = 2;

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首先，将该图像保存到SD卡，然后尝试下面的代码，看看它是否工作。对我来说，它工作得很好

File f = new File(filePath);
ExifInterface exif = new ExifInterface(f.getPath());
int orientation = exif.getAttributeInt(ExifInterface.TAG_ORIENTATION, ExifInterface.ORIENTATION_NORMAL);

int angle = 0;

if (orientation == ExifInterface.ORIENTATION_ROTATE_90) {
angle = 90;
} else if (orientation == ExifInterface.ORIENTATION_ROTATE_180) {
angle = 180;
} else if (orientation == ExifInterface.ORIENTATION_ROTATE_270) {
angle = 270;
}

Matrix mat = new Matrix();
mat.postRotate(angle);
BitmapFactory.Options options = new BitmapFactory.Options();
options.inSampleSize = 2;

---

只需使用鼠标以相反方向旋转图像

Matrix matrix=new Matrix();
imageView.setScaleType(ScaleType.MATRIX);   //required
float angle = 180f;//Use your value
matrix.postRotate( angle, imageView.getDrawable().getBounds().width()/2, imageView.getDrawable().getBounds().height()/2);
imageView.setImageMatrix(matrix);

---

只需使用鼠标以相反方向旋转图像

Matrix matrix=new Matrix();
imageView.setScaleType(ScaleType.MATRIX);   //required
float angle = 180f;//Use your value
matrix.postRotate( angle, imageView.getDrawable().getBounds().width()/2, imageView.getDrawable().getBounds().height()/2);
imageView.setImageMatrix(matrix);

---

ExiFinInterface用于在android中旋转图像

ExifInterface exif;
    try {
        exif = new ExifInterface(filePath);

        int orientation = exif.getAttributeInt(
                ExifInterface.TAG_ORIENTATION, 0);
        Log.d("EXIF", "Exif: " + orientation);
        Matrix matrix = new Matrix();
        if (orientation == 6) {
            matrix.postRotate(90);
            Log.d("EXIF", "Exif: " + orientation);
        } else if (orientation == 3) {
            matrix.postRotate(180);
            Log.d("EXIF", "Exif: " + orientation);
        } else if (orientation == 8) {
            matrix.postRotate(270);
            Log.d("EXIF", "Exif: " + orientation);
        }
        bmp = Bitmap.createBitmap(bmp, 0, 0, bmp.getWidth(),
                bmp.getHeight(), matrix, true);
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } 

---

ExiFinInterface用于在android中旋转图像

ExifInterface exif;
    try {
        exif = new ExifInterface(filePath);

        int orientation = exif.getAttributeInt(
                ExifInterface.TAG_ORIENTATION, 0);
        Log.d("EXIF", "Exif: " + orientation);
        Matrix matrix = new Matrix();
        if (orientation == 6) {
            matrix.postRotate(90);
            Log.d("EXIF", "Exif: " + orientation);
        } else if (orientation == 3) {
            matrix.postRotate(180);
            Log.d("EXIF", "Exif: " + orientation);
        } else if (orientation == 8) {
            matrix.postRotate(270);
            Log.d("EXIF", "Exif: " + orientation);
        }
        bmp = Bitmap.createBitmap(bmp, 0, 0, bmp.getWidth(),
                bmp.getHeight(), matrix, true);
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } 

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先发布代码。先发布代码。谢谢Sripathi，你的解决方案对我非常有效，谢谢你节省了我的时间。谢谢Sripathi，你的解决方案对我非常有效，谢谢你节省了我的时间。