Java 上传的照片是反向的-Android应用程序

因此，我们正在尝试在Android应用程序中实现上传图像功能。 在我们的注册页面中，有一个上载按钮，一旦按下，它应该重定向到图像库，一旦选择了图像，它应该显示在ImageView中

下面是我们正在尝试处理的代码的摘录。 问题是，对于某些图像，它可以正确显示，但对于某些图像，它要么向右旋转90度，要么向右旋转180度

可能是什么问题

     public class Register extends AppCompatActivity {

    private String mName = "";
    private String mUsername = "";
    private String mPassword = "";
    private String mCompany = "";
    private String mContact = "";

    private static final int PICK_IMAGE = 100;
    ImageView imageView;
    Uri imageUri;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_register);

        Intent recvdIntent = getIntent();

        mName = recvdIntent.getStringExtra("NAME");
        mUsername = recvdIntent.getStringExtra("USERNAME");
        mPassword = recvdIntent.getStringExtra("PASSWORD");
        mCompany = recvdIntent.getStringExtra("COMPANY");
        mContact = recvdIntent.getStringExtra("CONTACT");

        imageView = (ImageView)findViewById(R.id.imageView);

        Button btnSubmit = (Button) findViewById(R.id.btn_register);
        btnSubmit.setOnClickListener(
                new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        submitUserData();
                        Intent launchIntent = new Intent(Register.this, Category.class);
                        return;
                    }
                }
        );

        Button upload = (Button) findViewById(R.id.btn_upload);
        upload.setOnClickListener(
                new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        openGallery();
                    }
                });
        return;
    }


    private void openGallery() {
        Intent gallery = new Intent(Intent.ACTION_PICK, MediaStore.Images.Media.INTERNAL_CONTENT_URI);
        startActivityForResult(gallery, PICK_IMAGE);
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (resultCode == RESULT_OK && requestCode == PICK_IMAGE) {
            imageUri = data.getData();
            imageView.setImageURI(imageUri);
        }
    }

    public static Bitmap modifyOrientation(Bitmap bitmap, String image_absolute_path) throws IOException {
        ExifInterface ei = new ExifInterface(image_absolute_path);
        int orientation = ei.getAttributeInt(ExifInterface.TAG_ORIENTATION, ExifInterface.ORIENTATION_NORMAL);

        switch (orientation) {
            case ExifInterface.ORIENTATION_ROTATE_90:
                return rotate(bitmap, 90);

            case ExifInterface.ORIENTATION_ROTATE_180:
                return rotate(bitmap, 180);

            case ExifInterface.ORIENTATION_ROTATE_270:
                return rotate(bitmap, 270);

            case ExifInterface.ORIENTATION_FLIP_HORIZONTAL:
                return flip(bitmap, true, false);

            case ExifInterface.ORIENTATION_FLIP_VERTICAL:
                return flip(bitmap, false, true);

            default:
                return bitmap;
        }
    }

    public static Bitmap rotate(Bitmap bitmap, float degrees) {
        Matrix matrix = new Matrix();
        matrix.postRotate(degrees);
        return Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);
    }

    public static Bitmap flip(Bitmap bitmap, boolean horizontal, boolean vertical) {
        Matrix matrix = new Matrix();
        matrix.preScale(horizontal ? -1 : 1, vertical ? -1 : 1);
        return Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);
    }


    private void submitUserData() {
        EditText edtName = (EditText) findViewById(R.id.edt_name);
        EditText edtCompany = (EditText) findViewById(R.id.edt_company);
        EditText edtContact = (EditText) findViewById(R.id.edt_contact);
        EditText edtUsername = (EditText) findViewById(R.id.edt_username);
        EditText edtPassword = (EditText) findViewById(R.id.edt_password);

        TaraApp2 app = (TaraApp2) getApplication();
        app.saveUserData(edtName.getText().toString(),edtUsername.getText().toString(),
                edtPassword.getText().toString(),
                edtCompany.getText().toString(),
                edtContact.getText().toString() );

        finish();
        return;
    }


}

要获取图像的url，请使用此

public static Uri getImageContentUri(Context context, File imageFile) {
        String filePath = imageFile.getAbsolutePath();
        Cursor cursor = context.getContentResolver().query(
                MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
                new String[] { MediaStore.Images.Media._ID },
                MediaStore.Images.Media.DATA + "=? ",
                new String[] { filePath }, null);
        if (cursor != null && cursor.moveToFirst()) {
            int id = cursor.getInt(cursor
                    .getColumnIndex(MediaStore.MediaColumns._ID));
            Uri baseUri = Uri.parse("content://media/external/images/media");
            return Uri.withAppendedPath(baseUri, "" + id);
        } else {
            if (imageFile.exists()) {
                ContentValues values = new ContentValues();
                values.put(MediaStore.Images.Media.DATA, filePath);
                return context.getContentResolver().insert(
                        MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values);
            } else {
                return null;
            }
        }
    }

---

你的安卓设备的版本是什么？为什么要发布所有修改过的内容？你没有使用它。这会分散您的注意力。感谢您的回复，我在Uri selectedImageUri=data.getData；线它无法解析方法getData。对于位图Bitmap=scaleImagethis，选择图像URI；第行，它有一个未处理的异常错误java.io

public static Uri getImageContentUri(Context context, File imageFile) {
        String filePath = imageFile.getAbsolutePath();
        Cursor cursor = context.getContentResolver().query(
                MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
                new String[] { MediaStore.Images.Media._ID },
                MediaStore.Images.Media.DATA + "=? ",
                new String[] { filePath }, null);
        if (cursor != null && cursor.moveToFirst()) {
            int id = cursor.getInt(cursor
                    .getColumnIndex(MediaStore.MediaColumns._ID));
            Uri baseUri = Uri.parse("content://media/external/images/media");
            return Uri.withAppendedPath(baseUri, "" + id);
        } else {
            if (imageFile.exists()) {
                ContentValues values = new ContentValues();
                values.put(MediaStore.Images.Media.DATA, filePath);
                return context.getContentResolver().insert(
                        MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values);
            } else {
                return null;
            }
        }
    }

For accessing picture from your gallery you can use the croperino library. 
https://android-arsenal.com/details/1/4374

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    Croperino.prepareGallery(MainActivity.this);
 }

 @Override
 public void onActivityResult(int requestCode, int resultCode, Intent data) 
 {
    super.onActivityResult(requestCode, resultCode, data);
    switch (requestCode) {   
        case CroperinoConfig.REQUEST_PICK_FILE:
            if (resultCode == Activity.RESULT_OK) {
                CroperinoFileUtil.newGalleryFile(data, MainActivity.this);
                Croperino.runCropImage(CroperinoFileUtil.getmFileTemp(), 
                MainActivity.this, true, 1, 1, 0, 0);
            }
            break;
        case CroperinoConfig.REQUEST_CROP_PHOTO:
            if (resultCode == Activity.RESULT_OK) {
                Uri i = Uri.fromFile(CroperinoFileUtil.getmFileTemp());
                ivMain.setImageURI(i);
                //Do saving / uploading of photo method here.
                //The image file can always be retrieved via 
                CroperinoFileUtil.getmFileTemp()
            }
            break;
        default:
            break;
    }
}