我想在Facebook上将照片发布到我的墙上。我已经管理登录并将文本发布到墙上。但是，当我尝试发布图片时，没有任何反应。
我正在使用Android Facebook SDK。
这是我到目前为止所做的：
Bundle params = new Bundle();
params.putString("method", "photos.upload");
Toast.makeText(FacebookPoster.this, "" + getIntent().getExtras().getByteArray("data").length, Toast.LENGTH_SHORT).show();
params.putByteArray("picture", getIntent().getExtras().getByteArray("data"));
AsyncFacebookRunner mAsyncRunner = new AsyncFacebookRunner(facebook);
mAsyncRunner.request(null, params, "POST", new SampleUploadListener(), null);
Toast显示8733，表示字节数组不为空
NB。 Logcat输出一些警告（而不是错误）：
03-02 14:19:29.554: WARN/Bundle(1891): Attempt to cast generated internal exception:
03-02 14:19:29.554: WARN/Bundle(1891): java.lang.ClassCastException: java.lang.String
03-02 14:19:29.554: WARN/Bundle(1891): at android.os.Bundle.getByteArray(Bundle.java:1305)
03-02 14:19:29.554: WARN/Bundle(1891): at com.facebook.android.Util.openUrl(Util.java:155)
03-02 14:19:29.554: WARN/Bundle(1891): at com.facebook.android.Facebook.request(Facebook.java:559)
03-02 14:19:29.554: WARN/Bundle(1891): at com.facebook.android.AsyncFacebookRunner$2.run(AsyncFacebookRunner.java:253)
03-02 14:19:29.584: WARN/Bundle(1891): Key method expected byte[] but value was a java.lang.String. The default value <null> was returned.
（在彼此之下多次显示。）
我做错了什么？
解决。 这就是我做的工作：
facebook.authorize(this, new String[] { "publish_stream" },
new DialogListener() {
@Override
public void onFacebookError(FacebookError e) {
// TODO Auto-generated method stub
}
@Override
public void onError(DialogError dialogError) {
// TODO Auto-generated method stub
}
@Override
public void onComplete(Bundle values) {
postToWall(values.getString(Facebook.TOKEN));
}
@Override
public void onCancel() {
// TODO Auto-generated method stub
}
});
辅助方法：
private void postToWall(String accessToken) {
Bundle params = new Bundle();
params.putString(Facebook.TOKEN, accessToken);
// The byte array is the data of a picture.
params.putByteArray("picture", getIntent().getExtras().getByteArray("data"));
try {
facebook.request("me/photos", params, "POST");
} catch (FileNotFoundException fileNotFoundException) {
makeToast(fileNotFoundException.getMessage());
} catch (MalformedURLException malformedURLException) {
makeToast(malformedURLException.getMessage());
} catch (IOException ioException) {
makeToast(ioException.getMessage());
}
}
答案 0 :(得分：23)
首先，你没有使用图形api来上传图片...你使用旧的api ...尝试使用图形api，简单...
使用以下代码：
Bundle param = new Bundle();
param.putString("message", "picture caption");
param.putByteArray("picture", ImageBytes);
mAsyncRunner.request("me/photos", param, "POST", new SampleUploadListener());
根据错误消息，看起来它在从intent的bundle中获取字节时出错......
答案 1 :(得分：6)
btnLogin.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
facebook.authorize(FbdemoActivity.this, new String[]{ "user_photos,publish_checkins,publish_actions,publish_stream"},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 void postImageonWall() {
byte[] data = null;
Bitmap bi = BitmapFactory.decodeFile("/sdcard/viewitems.png");
ByteArrayOutputStream baos = new ByteArrayOutputStream();
bi.compress(Bitmap.CompressFormat.JPEG, 100, baos);
data = baos.toByteArray();
Bundle params = new Bundle();
params.putString(Facebook.TOKEN, facebook.getAccessToken());
params.putString("method", "photos.upload");
params.putByteArray("picture", data);
AsyncFacebookRunner mAsyncRunner = new AsyncFacebookRunner(facebook);
mAsyncRunner.request(null, params, "POST", new SampleUploadListener(), null);
}
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) {
}
}
试试这段代码，我会使用相同的代码并在Facebook上传图片。
答案 2 :(得分：6)
这是工作代码示例。传递图像路径和消息。
public static void postImageonWall(String FilePath,String msg ) {
try {
Bitmap bi = BitmapFactory.decodeFile(FilePath);
AsyncFacebookRunner mAsyncRunner = new AsyncFacebookRunner(facebook);
ByteArrayOutputStream stream = new ByteArrayOutputStream();
bi.compress(Bitmap.CompressFormat.PNG, 100, stream); // where bm is bitmap from Sdcard
byte[] byteArray = stream.toByteArray();
Bundle param = new Bundle();
param = new Bundle();
param.putString("message", msg);
param.putString("filename", "Dessert Dash");
param.putByteArray("image", byteArray);
param.putString("caption", "Dessert Dash in Android Market Now");
mAsyncRunner.request("me/photos", param, "POST", fbrq, null);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
答案 3 :(得分：4)
private String postwall(String uid)
{
String response = "";
try
{
String DIRECTORY_PATH = "/sdcard/159.jpg";
Bundle params = new Bundle();
Bitmap bitmap = BitmapFactory.decodeFile(DIRECTORY_PATH);
byte[] data = null;
ByteArrayOutputStream baos = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.JPEG, 100, baos);
data = baos.toByteArray();
params.putString("app_id", uid);
params.putString("message", "picture caption");
params.putByteArray("picture", data);
mFacebook.authorize(this, PERMISSIONS, new LoginDialogListener());
mAsyncRunner.request("me/photos", params, "POST", new WallPostRequestListener());
mAsyncRunner.request(response, new WallPostRequestListener());
Log.e("post result", response);
}
catch (Exception e)
{
e.printStackTrace();
}
return response;
}
public class WallPostRequestListener extends BaseRequestListener
{
public void onComplete(final String response)
{
Log.d("Facebook-Example", "Got response: " + response);
String message = "<empty>";
try
{
JSONObject json = Util.parseJson(response);
message = json.getString("message");
}
catch (JSONException e)
{
Log.w("Facebook-Example", "JSON Error in response");
}
catch (FacebookError e)
{
Log.w("Facebook-Example", "Facebook Error: " + e.getMessage());
}
final String text = "Your Wall Post: " + message;
}
}
答案 4 :(得分：2)
我确信Facebook最终会解决这个问题，但暂时这些例子（由其他用户发布）非常具有误导性，因为它们实际上不会发布到用户的墙上（在常规意义上）。相反，他们被添加到用户的照片库，然后碰巧最终在墙上，但不是正常的帖子工作的方式...没有标题和没有标题，如果你添加另一张照片，它最终与第一个并排（而不是作为单独的条目）。所以，当你使用api命令me / feed时，它只是以一种壮观的方式失败，它实际上将一个帖子添加到墙上，但它是一个来自应用程序的空帖子（它甚至忽略了标题和标题）。
希望Facebook能在短期内解决这个问题。
答案 5 :(得分：0)
使用Facebook凭据登录后，从代码中将图像和文本发布到Facebook墙上。
注意：仅在使用Facebook凭据登录您的应用后才适用
sharePhotoToFacebook(); //function called from any UI event
private void sharePhotoToFacebook(){
Bitmap bitmap=null;
String path = Environment.getExternalStorageDirectory().getAbsolutePath()+"/Download/";
try {
File file = new File(path, "image9.jpg");
bitmap = BitmapFactory.decodeFile(file.getAbsolutePath());
}
catch (Exception e){
Log.e("Error" , " Error in loading file");
}
SharePhoto photo = new SharePhoto.Builder()
.setBitmap(bitmap)
.setCaption("A post from Android code")
.build();
SharePhotoContent content = new SharePhotoContent.Builder()
.addPhoto(photo)
.build();
ShareApi.share(content, null);
Toast.makeText(LoginSuccessActivity.this, "Image posted successfully", Toast.LENGTH_LONG).show();
}