Question

使用intent我将图像捕获到imageview中，但在设置时它会旋转90或270。如何限制这种旋转？

Intent i=new Intent(MediaStore.ACTION_IMAGE_CAPTURE);                           i.putExtra(MediaStore.EXTRA_OUTPUT,Uri.parse("file:///"+mProfile_Image));
startActivityForResult(i, 1);                                       

// Set to imageview

mProfileImage.setImageURI(Uri.parse("file:///"+mProfile_Image));


// here imageview is the path

Answer 1

您无需限制旋转。

尝试以下

Uri imageUri = Uri.parse(path);
        String imagePath = path;

        int rotate = 0;
// initializing
    int dpWidth = 100;
    int dpHeight = 100;
        try {
            getContentResolver().notifyChange(imageUri, null);
            File imageFile = new File(imagePath);
            ExifInterface exif = new ExifInterface(imageFile.getAbsolutePath());
            int orientation = exif.getAttributeInt(
                    ExifInterface.TAG_ORIENTATION,
                    ExifInterface.ORIENTATION_NORMAL);

            switch (orientation) {
            case ExifInterface.ORIENTATION_ROTATE_270:
                rotate = 270;
                break;
            case ExifInterface.ORIENTATION_ROTATE_180:
                rotate = 180;
                break;
            case ExifInterface.ORIENTATION_ROTATE_90:
                rotate = 90;
                break;
            }
        } catch (Exception e) {
            e.printStackTrace();
        }

        dpWidth = (int) ((outMetrics.widthPixels / density) * .75);

        dpHeight = (int) ((outMetrics.heightPixels / density) * .75);

        Matrix matrix = new Matrix();
        matrix.postRotate(rotate);

这将有助于您显示正确的图像

修改

此代码不用于永久旋转图像。所以每当你想在inmageView中显示图像时，只需旋转并添加。

修改1

使用此功能在imageview中设置图像

Bitmap bm = BitmapFactory.decodeFile(path); Bitmap bm = Bitmap.createBitmap(bm, 0, 0, bm.getWidth(), bm.getHeight(), matrix, true); imageView.setImageBitmap(bm);

Answer 2

将您的活动方向设置为肖像并试一试。

<activity 
        android:name="YourActivityName"
        android:screenOrientation="portrait">
</activity>

关于ImageView方向

2 个答案: