android - 从 SD 卡上传图片到 Facebook - Android

Question

我想从 SD 卡上传一张图片到 Facebook。可以通过 URL 在 Facebook 上发布图片，但如果我从 SD 卡传递图片，则不会发布。

我正在传递 byteArray 而不是用于上传图像的字符串，但我仍然没有得到输出。谁能帮我解决这个问题？

我的代码:

    byte[] data = null;        
    params.putString(Facebook.TOKEN, facebook.getAccessToken());
    params.putString("link", "https://www.facebook.com/pages/My-Short-Sale-Score/242779072468511");
    params.putByteArray("picture",data);

    Facebook facebook = new Facebook("318633718220473");

    mAsyncRunner = new AsyncFacebookRunner(facebook);  
    mAsyncRunner.request(null, params, "POST", new SampleUploadListener(), null);

   facebook.dialog(this, "stream.publish", params,

              new DialogListener() {
                   @Override
                   public void onComplete(Bundle values){} 

                   @Override
                   public void onFacebookError(FacebookError error) {}

                   @Override
                   public void onError(DialogError e) {}

                   @Override
                   public void onCancel() {}
              }
        );              
}

 public class SampleUploadListener extends BaseRequestListener {

        public void onComplete(final String response, final Object state) {
            try {
                // process the response here: (executed in background thread)
                Log.d("Facebook-Example", "Response: " + response.toString());
                JSONObject json = Util.parseJson(response);
                final String src = json.getString("src");

                // then post the processed result back to the UI thread
                // if we do not do this, an runtime exception will be generated
                // e.g. "CalledFromWrongThreadException: Only the original
                // thread that created a view hierarchy can touch its views."

            } catch (JSONException e) {
                Log.w("Facebook-Example", "JSON Error in response");
            } catch (FacebookError e) {
                Log.w("Facebook-Example", "Facebook Error: " + e.getMessage());
            }
        }

        @Override
        public void onFacebookError(FacebookError e, Object state) {    
        }
 }

Answer 1

从 SD 卡上的文件路径创建一个文件对象，例如

File ff = new File("Your sdcard file path");
        bb = decode(ff);
    }       
    ByteArrayOutputStream stream = new ByteArrayOutputStream();
    bb.compress(Bitmap.CompressFormat.PNG, 100, stream);
    byte[] byteArray = stream.toByteArray();
    Bundle params = new Bundle();
    params.putString("method", "photos.upload");
    params.putString("caption", msg);
    params.putByteArray("image", byteArray);
    try {

        facebook.request("me/feed", params, "POST");

    } catch (FileNotFoundException fileNotFoundException) {
        fileNotFoundException.printStackTrace();
    } catch (MalformedURLException malformedURLException) {
        malformedURLException.printStackTrace();
    } catch (IOException ioException) {
        ioException.printStackTrace();
    }
    AsyncFacebookRunner mAsyncRunner = new AsyncFacebookRunner(facebook);
    mAsyncRunner.request(null, params, "POST", new SampleUploadListener(),
            null);

// code for decode method

private Bitmap decode(File f) {
    try {
        //Decode image size
        BitmapFactory.Options o = new BitmapFactory.Options();
        o.inJustDecodeBounds = true;
        BitmapFactory.decodeStream(new FileInputStream(f),null,o);

        //The new size we want to scale to
        final int REQUIRED_SIZE=70;

        //Find the correct scale value. It should be the power of 2.
        int scale=1;
        while(o.outWidth/scale/2>=REQUIRED_SIZE && o.outHeight/scale/2>=REQUIRED_SIZE)
            scale*=2;

        //Decode with inSampleSize
        BitmapFactory.Options o2 = new BitmapFactory.Options();
        o2.inSampleSize=scale;
        return BitmapFactory.decodeStream(new FileInputStream(f), null, o2);
    } catch (FileNotFoundException e) {}

    return null;
}