我正在尝试一些教程和示例代码，以从画廊或相机中获取图像，然后裁剪图像并将其上传到服务器。我实现了该代码，因为该代码面临的问题很少。

1. 在 Lollipop 之前的设备中，当我使用照片应用程序裁剪图像时，图像不会反射(reflect)在 ImageView 中，但会显示图像保存时的消息。
2. 在 Nexus 手机中，相机和画廊都无法正常工作。

3. 5.0 versions in few devices when I crop the image am getting the image like shown below

下面是我的代码 fragment 。`

public void getPhoto() {

        final String[] items = new String[] { "Take from camera",
                "Select from gallery" };
        ArrayAdapter<String> adapter = new ArrayAdapter<String>(getActivity(),
                android.R.layout.select_dialog_item, items);
        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());

        builder.setTitle("Select Image");
        builder.setAdapter(adapter, new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog, int item) { // pick from
                                                                    // camera
                if (item == 0) {
                    Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
                    intent.putExtra(
                            "android.intent.extras.CAMERA_FACING",
                            android.hardware.Camera.CameraInfo.CAMERA_FACING_FRONT);
                    mImageCaptureUri = Uri.fromFile(new File(Environment
                            .getExternalStorageDirectory(), "tmp_avatar_"
                            + String.valueOf(System.currentTimeMillis())
                            + ".jpg"));

                    intent.putExtra(android.provider.MediaStore.EXTRA_OUTPUT,
                            mImageCaptureUri);

                    try {
                        intent.putExtra("return-data", true);
                        startActivityForResult(intent, PICK_FROM_CAMERA);
                    } catch (ActivityNotFoundException e) {
                        e.printStackTrace();
                    }
                } else { // pick from file
                    Intent intent = new Intent(Intent.ACTION_PICK);
                    intent.setType("image/*");
                    // startActivityForResult(intent, SELECT_PICTURE);
                    startActivityForResult(intent, PICK_FROM_FILE);
                }
            }
        });

        final AlertDialog dialog = builder.create();
        dialog.show();

    }

    @Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);

        if (resultCode != Activity.RESULT_OK)
            return;

        switch (requestCode) {
        case PICK_FROM_CAMERA:
            doCrop();

            break;

        case PICK_FROM_FILE:
            mImageCaptureUri = data.getData();
            doCrop();
            break;

        case CROP_FROM_CAMERA:
            Bundle extras = data.getExtras();
            if (extras != null) {
                photo = extras.getParcelable("data");
                profile_image = encodeTobase64(photo);
                saveType = "photo";
                try {
                    JSONObject obj = new JSONObject();
                    obj.put("user_id", user_id);
                    obj.put("mode", saveType);
                    obj.put("photo", profile_image);
                    obj.put("is_profile", 1);
                    saveResponse(obj);
                } catch (Exception e) {
                    // TODO: handle exception
                    e.printStackTrace();
                }

            }
            File f = new File(mImageCaptureUri.getPath());
            if (f.exists())
                f.delete();
            break;
        }
    }

    private void doCrop() {
        final ArrayList<CropOption> cropOptions = new ArrayList<CropOption>();
        Intent intent = new Intent("com.android.camera.action.CROP");
        intent.setType("image/*");
        List<ResolveInfo> list = getActivity().getPackageManager()
                .queryIntentActivities(intent, 0);
        int size = list.size();
        if (size == 0) {
            Toast.makeText(getActivity(), "Can not find image crop app",
                    Toast.LENGTH_SHORT).show();
            return;
        } else {
            intent.setData(mImageCaptureUri);
            intent.putExtra("crop", "true");
            intent.putExtra("outputX", 300);
            intent.putExtra("outputY", 300);
            intent.putExtra("aspectX", 1);
            intent.putExtra("aspectY", 1);
            intent.putExtra("scale", true);
            intent.putExtra("circleCrop", new String(""));
            intent.putExtra("return-data", true);
            if (size == 1) {
                Intent i = new Intent(intent);
                ResolveInfo res = list.get(0);

                i.setComponent(new ComponentName(res.activityInfo.packageName,
                        res.activityInfo.name));
                startActivityForResult(i, CROP_FROM_CAMERA);
            } else {
                for (ResolveInfo res : list) {
                    final CropOption co = new CropOption();

                    co.title = getActivity().getPackageManager()
                            .getApplicationLabel(
                                    res.activityInfo.applicationInfo);
                    co.icon = getActivity().getPackageManager()
                            .getApplicationIcon(
                                    res.activityInfo.applicationInfo);
                    co.appIntent = new Intent(intent);
                    co.appIntent
                            .setComponent(new ComponentName(
                                    res.activityInfo.packageName,
                                    res.activityInfo.name));
                    cropOptions.add(co);
                }

                CropOptionAdapter adapter = new CropOptionAdapter(
                        getActivity(), cropOptions);

                AlertDialog.Builder builder = new AlertDialog.Builder(
                        getActivity());
                builder.setTitle("Choose Crop App");
                builder.setAdapter(adapter,
                        new DialogInterface.OnClickListener() {
                            public void onClick(DialogInterface dialog, int item) {
                                startActivityForResult(
                                        cropOptions.get(item).appIntent,
                                        CROP_FROM_CAMERA);
                            }
                        });

                builder.setOnCancelListener(new DialogInterface.OnCancelListener() {
                    @Override
                    public void onCancel(DialogInterface dialog) {

                        if (mImageCaptureUri != null) {
                            getActivity().getContentResolver().delete(
                                    mImageCaptureUri, null, null);
                            mImageCaptureUri = null;
                        }
                    }
                });

                AlertDialog alert = builder.create();

                alert.show();
            }
        }
    }

    public String encodeTobase64(Bitmap image) {
        Bitmap immagex = image;
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        immagex.compress(Bitmap.CompressFormat.JPEG, 100, baos);
        image_Array = baos.toByteArray();
        String imageEncoded = Base64
                .encodeToString(image_Array, Base64.DEFAULT);
        return imageEncoded;
    }

`

在复制这个问题之前在下面发表评论，因为我已经检查了很多但没有找到任何解决方案，如果您需要更多信息，请告诉我。

最佳答案

上周我遇到了同样的问题，我终于解决了，我的情况有点不同，我从服务器获取 Base64 图像然后裁剪

这是代码

byte[] decodedString = Base64.decode(imageJson, Base64.DEFAULT);
Bitmap tmp = BitmapFactory.decodeByteArray(decodedString, 0, decodedString.length);
bitmapDecoded = BitmapFactory.decodeByteArray(decodedString, 0, decodedString.length);

DisplayMetrics metrics = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(metrics);

int h = metrics.heightPixels;
int w = metrics.widthPixels;
Bitmap resized = Bitmap.createScaledBitmap(tmp, tmp.getWidth(), (int) (tmp.getHeight()*1.6), true);
imageView.setImageBitmap(canvas.getCircleBitmap(resized, w,h));

imageJson 是 Base64 中的图像，它是一个字符串，我将它转换为位图，在我获得屏幕大小后，调整大小的位图在这里有一个方形图像，因为我有一个 16/9 图像，这可能是对你没用，最后我在 imageView 中显示位图并使用 Canvas 方法 getCircleBitmap 裁剪它

这是方法

public Bitmap getCircleBitmap(Bitmap bitmap,int width, int height) {
    final Bitmap output = Bitmap.createBitmap(bitmap.getWidth(),
            bitmap.getHeight(), Bitmap.Config.ARGB_8888);
    final Canvas canvas = new Canvas(output);
    final int color = Color.RED;
    final Paint paint = new Paint();
    final Rect rect = new Rect((int)(bitmap.getWidth()*0.054), (int) (height*0.005), (int) (bitmap.getWidth()*0.945), (bitmap.getHeight()));
    final RectF rectF = new RectF(rect);

    paint.setAntiAlias(true);
    canvas.drawARGB(0, 0, 0, 0);
    paint.setColor(color);
    canvas.drawOval(rectF, paint);
    paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));
    canvas.drawBitmap(bitmap, rect, rect, paint);
    bitmap.recycle();

    return output;
}

您可以更改矩形的值以适合您的使用 我在扩展 View 的 Canvas 类中声明了这个方法，真的希望这对你也有帮助，抱歉我的英语不好

关于android - 从相机和图库上传在所有版本中均无法正常工作，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/37234877/