我想与Facebook上的状态共享多个图像，但我无法发布所有这些图像。我正在创建一个来自SD卡的图像的数组列表，并将每个图像转换为字节对象。以下是上传的代码。任何人都可以让我知道我缺乏代码或更好的方式来实现这一要求。
以下是分享按钮上的代码：
public void loginToFacebook() {
String hashKey = showHashKey(MainActivity.this);
Log.d("hashKey", ">>> " + hashKey);
mPrefs = getPreferences(MODE_PRIVATE);
String access_token = mPrefs.getString("access_token", null);
long expires = mPrefs.getLong("access_expires", 0);
if (access_token != null) {
facebook.setAccessToken(access_token);
if (facebook.isSessionValid()) {
Session session = facebook.getSession();
postToWall();
}
Log.d("FB Sessions", "" + facebook.isSessionValid());
}
if (expires != 0) {
facebook.setAccessExpires(expires);
}
if (!facebook.isSessionValid()) {
facebook.authorize(this, new String[] { "publish_stream" },
new DialogListener() {
@Override
public void onCancel() {
// Function to handle cancel event
Log.e("Face onCancel", "-> ok");
}
@Override
public void onComplete(Bundle values) {
// Function to handle complete event
// Edit Preferences and update facebook acess_token
SharedPreferences.Editor editor = mPrefs.edit();
editor.putString("access_token",
facebook.getAccessToken());
editor.putLong("access_expires",
facebook.getAccessExpires());
editor.commit();
postToWall();
// Making show access tokens button visible
}
@Override
public void onError(DialogError error) {
Log.e("Face onError", "-> " + error);
// Function to handle error
}
@Override
public void onFacebookError(FacebookError fberror) {
// Function to handle Facebook errors
Log.e("Face onFacebookError", "-> " + fberror);
}
});
}
}
public String showHashKey(Context context) {
String hashkey = "";
try {
PackageInfo info = context.getPackageManager().getPackageInfo(
"com.example.demofacebook", PackageManager.GET_SIGNATURES); // Your
// package
// name
// here
for (Signature signature : info.signatures) {
MessageDigest md = MessageDigest.getInstance("SHA");
md.update(signature.toByteArray());
// Log.v("KeyHash:", Base64.encodeToString(md.digest(),
// Base64.DEFAULT));
hashkey = Base64.encodeToString(md.digest(), Base64.DEFAULT);
}
} catch (NameNotFoundException e) {
} catch (NoSuchAlgorithmException e) {
}
return hashkey;
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
facebook.authorizeCallback(requestCode, resultCode, data);
if (data != null) {
if (facebook.getSession() != null) {
Session.getActiveSession().addCallback(statusCallback);
Session.getActiveSession().onActivityResult(MainActivity.this,
requestCode, resultCode, data);
}
}
// Session.getActiveSession().onActivityResult(this, requestCode,
// resultCode, data);
// Session.getActiveSession().onActivityResult(this, requestCode,
// resultCode, data);
// publishFeedDialog();
}
public void postToWall() {
publishStory();
}
@Override
protected void onSaveInstanceState(Bundle outState) {
// TODO Save current session
super.onSaveInstanceState(outState);
Session session = Session.getActiveSession();
Session.saveSession(session, outState);
}
private class SessionStatusCallback implements Session.StatusCallback {
@Override
public void call(Session session, SessionState state,
Exception exception) {
// Check if Session is Opened or not, if open & clicked on share
// button publish the story
if (session != null && state.isOpened()) {
Log.d("FbShare", "Session is opened");
if (session.getPermissions().contains("publish_actions")) {
Log.d("FbShare", "Starting share");
publishAction();
} else {
Log.d("FbShare", "Session dont have permissions");
publishStory();
}
} else {
Log.d("FbShare", "Invalid fb Session");
}
}
}
private void publishStory() {
Session session = Session.getActiveSession();
if (session != null && session.getState().isOpened()) {
checkSessionAndPost();
} else {
Log.d("FbShare", "Session is null");
// session = new Session(ShareActivity.this);
session = new Session.Builder(this).setApplicationId(APP_ID)
.build();
Session.setActiveSession(session);
session.addCallback(statusCallback);
Log.d("FbShare", "Session info - " + session);
try {
Log.d("FbShare", "Opening session for read");
session.openForRead(new Session.OpenRequest(MainActivity.this));
} catch (UnsupportedOperationException exception) {
exception.printStackTrace();
Log.d("FbShare", "Exception Caught");
Toast.makeText(MainActivity.this,
"Unable to post your score on facebook",
Toast.LENGTH_LONG).show();
}
}
}
private void checkSessionAndPost() {
Session session = Session.getActiveSession();
session.addCallback(statusCallback);
Log.d("FbShare",
"Session Permissions Are - " + session.getPermissions());
if (session.getPermissions().contains("publish_actions")) {
publishAction();
} else {
session.requestNewPublishPermissions(new Session.NewPermissionsRequest(
MainActivity.this, permissions));
}
}
// filePaths is arraylist of the images from sdcard
private void publishAction() {
final Bundle params = new Bundle();
FileInputStream stream = null;
byte[] imgData = null;
try {
params.putString("name", "Hello Wednesday test 20 Nov");
params.putString("caption", "test 20 Nov");
params.putString("link", "");
String[] byteStrings = new String[3];
for (int i = 0; i < filePaths.size(); i++) {
Log.i("PASSED FILE", "==== " + filePaths.get(i));
Log.i("PICTURE FILE", "==== " + "picture" + (i + 1));
stream = new FileInputStream(filePaths.get(i));
Bitmap bitmap = BitmapFactory.decodeStream(stream);
ByteArrayOutputStream bos = new ByteArrayOutputStream();
bitmap.compress(CompressFormat.JPEG, 100, bos);
imgData = bos.toByteArray();
byteStrings[i] = filePaths.get(i).toString();
params.putByteArray("picture" + i + 1, imgData);
}
// params.putStringArray("images" , byteStrings);
} catch (FileNotFoundException e) {
e.printStackTrace();
}
// params.putString(
// "description",
// "");
// params.putString("picture", ""+imgData);
// params.putByteArray("picture2", imgData);
// params.putByteArray("picture3", imgData);
// params.putStringArrayList("picture", filePaths);
new Thread(new Runnable() {
@SuppressWarnings("unused")
@Override
public void run() {
try {
final String response = facebook.request("me/photos",
params, "POST");
runOnUiThread(new Runnable() {
@Override
public void run() {
Toast.makeText(getApplicationContext(),
"Post uploaded successfully",
Toast.LENGTH_SHORT).show();
Utility.dismissCustomProgressDialog();
}
});
} catch (FileNotFoundException e) {
e.printStackTrace();
Utility.dismissCustomProgressDialog();
} catch (MalformedURLException e) {
e.printStackTrace();
Utility.dismissCustomProgressDialog();
} catch (IOException e) {
e.printStackTrace();
Utility.dismissCustomProgressDialog();
}
}
}) {
}.start();
}
答案 0 :(得分：2)
您正在混合使用Session（在SDK的v3.0中引入）和Facebook（现已弃用），它们都管理您的访问令牌并帮助您发出请求。这使得您的逻辑很难破译。请坚持只使用Session，并删除所有使用已弃用的代码（Facebook类中的所有内容）。
其次，有一个辅助方法可以帮助您上传照片，它位于Request类中：https://developers.facebook.com/docs/reference/android/3.0/Request#newUploadPhotoRequest(Session,%20Bitmap,%20Callback)。它也被重载以获取位图或文件。
如果您要上传多张照片，可以创建多个请求，然后将其添加到批处理中，例如：
Request r1 = Request.newUploadPhotoRequest(...);
Request r2 = Request.newUploadPhotoRequest(...);
RequestBatch batch = new RequestBatch(r1, r2);
batch.executeAsync();
最后，me / photos端点只接受“source”（图像），“message”和“place”参数，并且不接受“caption”或“link”。请参阅此处的详细文档https://developers.facebook.com/docs/reference/api/user/#photos