Question

我试图阅读并显示使用相机Intent拍摄的照片。我的代码基于android docs中的示例：

 public void takeSidePhoto(View view) {
    Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
    if (takePictureIntent.resolveActivity(getPackageManager()) != null) {
        File photoFile = null;
        try {
            photoFile = createImageFile(REQUEST_IMAGE_CAPTURE_SIDE);
        } catch (IOException ex) {

        }
        if (photoFile != null) {
            Uri photoURI = FileProvider.getUriForFile(this, "my.app.package.fileprovider", photoFile);
            imageSide = photoURI.toString();
            takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, photoURI);
            startActivityForResult(takePictureIntent, REQUEST_IMAGE_CAPTURE_SIDE);
        }
    }
}

private File createImageFile(int imageCaptureCode) throws IOException {
    String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
    String imageFileName = "JPEG_" + timeStamp + "_";
    File storageDir = getExternalFilesDir(Environment.DIRECTORY_PICTURES);
    File image = File.createTempFile(
            imageFileName,  /* prefix */
            ".jpg",         /* suffix */
            storageDir      /* directory */
    );
    return image;
}

问题是传递给photoURI的{{1}}是（示例）： takePictureIntent 但是当我用文件管理器浏览我的测试设备存储时，我可以看到拍摄的图片存储在： file:/storage/emulated/0/Android/data/my.app.package/files/Pictures/JPEG_20160921_123241_562024049.jpg

发生了什么以及如何获取真实文件的路径？

Answer 1

在你的try块中做这样的事情来获取路径

if(photoFile.exists()){
String path = photoFile.getAbsolutePath()
}

Answer 2

takeSidePhoto（）方法应具有以下内容：

  Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
        if (takePictureIntent.resolveActivity(getActivity().getPackageManager()) != null) {
            File photoFile = null;
            try {
                photoFile = createImageFile();
                imageUri = Uri.fromFile(photoFile);
            } catch (IOException ex) {
                Toast.makeText(getActivity(), ex.toString(), Toast.LENGTH_SHORT).show();
            }
            if (photoFile != null) {
                takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);
                startActivityForResult(takePictureIntent, CAMERA_REQUEST_CODE);
            }
        } else {
            Toast.makeText(getActivity(), R.string.no_camera_error_message, Toast.LENGTH_SHORT).show();
        }

在createImageFile（）方法中，更改此行File storageDir = getExternalFilesDir(Environment.DIRECTORY_PICTURES);

使用此File storageDir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES);

Answer 3

使用以下代码获取存储目录，并将图像保存到路径中。

String path = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES).toString();

阅读用相机拍摄的照片意图

3 个答案: