Android获取最新拍摄照片的路径

Question

我正在从我的应用启动相机来拍照。它也可以在图库中找到。

常见的问题是如何知道照片的路径。建议的解决方案是：

1. 自己保存路径，然后使用EXTRA_OUTPUT发送过来
2. 从图库中的最后一张照片开始。

解决方案 1 isn't reliable.

我正在尝试使用以下代码使解决方案 2 工作：

public static String getTakenPhotoPath(Context context) {
    try {
        String[] projection = {MediaStore.Images.Media.DATA};
        Cursor cursor = context.getContentResolver().query(
                MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
                projection, null, null, null);

        int column_index_data = cursor
                .getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
        cursor.moveToLast();

        return cursor.getString(column_index_data);
    } catch (Exception ex) {
        ex.printStackTrace();

        return null;
    }
}

这不会返回最新照片的路径；它返回前一个。在询问最新照片的路径之前，我正在这样做：

private void addToGallery(Uri urlType, String path) {
    if (!Strings.isNullOrEmpty(path)) {
        ContentValues values = new ContentValues();
        // Add the date meta data to ensure the image is added at the front of the gallery
        values.put(MediaStore.Images.Media.DATE_ADDED, System.currentTimeMillis());
        values.put(MediaStore.Images.Media.DATE_TAKEN, System.currentTimeMillis());
        values.put(MediaStore.MediaColumns.DATA, path);

        getContentResolver().insert(urlType, values);

        Intent mediaScanIntent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
        Uri contentUri = Uri.fromFile(new File(path));
        mediaScanIntent.setData(contentUri);
        sendBroadcast(mediaScanIntent);
    }
}

Answer 1

您可以这样做：当您打开相机时，您可以在给定的代码中传递您自己的首选位置，以便将来拍摄图像。而在onActivityResult你可以直接使用那个图片路径供你使用。

 File image ;
    Intent photoCaptureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
            File imagesFolder = new    File(Environment.getExternalStorageDirectory(), "MyImages");
            imagesFolder.mkdirs(); // <----
            image = new File(imagesFolder, getFileName());
            Uri uriSavedImage = Uri.fromFile(image);
            photoCaptureIntent.putExtra(MediaStore.EXTRA_OUTPUT, uriSavedImage);
            startActivityForResult(photoCaptureIntent, PICK_FROM_CAMERA);


    private String getFileName() {
            SimpleDateFormat formatter = new SimpleDateFormat("yyyy_MM_dd_HH_mm_ss");
            Date now = new Date();
            String fileName = formatter.format(now) + ".jpg";
            return fileName;
        }


@Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        try {
            setResult(resultCode, data);


            switch (requestCode) {
                case PICK_FROM_CAMERA:
                    try {
                        if (resultCode != RESULT_CANCELED) {
                            Intent upload = new Intent(EditProfile.this, ImageCropingFucAtivity.class);
                            prefs.edit().putBoolean("FromCamera", true).commit();
                            upload.putExtra(CropImage.IMAGE_PATH, image.toString());
                            upload.putExtra(CropImage.SCALE, true);
                            upload.putExtra(CropImage.ASPECT_X, 2);
                            upload.putExtra(CropImage.ASPECT_Y, 2);
                            startActivity(upload);
                            imageSelected = true;
                            finish();
                        }

                    } catch (Exception e) {
                        e.printStackTrace();
                    }

                    break;

                  }
        } catch (Exception e) {
            e.printStackTrace();
        }

    }