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我正在學習如何使用Facebook SDK，並且我喜歡在應用程序中加入一個類似按鈕來測試它，不幸的是我做錯了事，所以你可以請顯示一個樣例或應用類似按鈕的代碼，這裏是正在處理的類。Android :: Facebook like button
/**
* Copyright 2010-present Facebook.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.PACKAGE_NAME;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import android.app.AlertDialog;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.location.Location;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentManager;
import android.text.TextUtils;
import android.util.Log;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
import com.facebook.FacebookAuthorizationException;
import com.facebook.FacebookException;
import com.facebook.FacebookOperationCanceledException;
import com.facebook.FacebookRequestError;
import com.facebook.Request;
import com.facebook.Response;
import com.facebook.Session;
import com.facebook.SessionState;
import com.facebook.UiLifecycleHelper;
import com.facebook.model.GraphObject;
import com.facebook.model.GraphPlace;
import com.facebook.model.GraphUser;
import com.facebook.widget.FacebookDialog;
import com.facebook.widget.FriendPickerFragment;
import com.facebook.widget.LoginButton;
import com.facebook.widget.PickerFragment;
import com.facebook.widget.PlacePickerFragment;
import com.facebook.widget.ProfilePictureView;
import com.facebook.widget.WebDialog;
import com.facebook.widget.WebDialog.OnCompleteListener;
public class FacebookClass extends FragmentActivity {
private static final String PERMISSION = "publish_actions";
private static final Location SEATTLE_LOCATION = new Location("") {
{
setLatitude(47.6097);
setLongitude(-122.3331);
}
};
private final String PENDING_ACTION_BUNDLE_KEY = "com.PACKAGE_NAME:PendingAction";
private Button postStatusUpdateButton;
// private Button postPhotoButton;
private Button pickFriendsButton;
// private Button pickPlaceButton;
private LoginButton loginButton;
private ProfilePictureView profilePictureView;
private TextView greeting;
private PendingAction pendingAction = PendingAction.NONE;
private ViewGroup controlsContainer;
private GraphUser user;
private GraphPlace place;
private List<GraphUser> tags;
private boolean canPresentShareDialog;
private enum PendingAction {
NONE, POST_PHOTO, POST_STATUS_UPDATE
}
private UiLifecycleHelper uiHelper;
private Session.StatusCallback callback = new Session.StatusCallback() {
@Override
public void call(Session session, SessionState state,
Exception exception) {
onSessionStateChange(session, state, exception);
}
};
private FacebookDialog.Callback dialogCallback = new FacebookDialog.Callback() {
@Override
public void onError(FacebookDialog.PendingCall pendingCall,
Exception error, Bundle data) {
Log.d("HelloFacebook", String.format("Error: %s", error.toString()));
}
@Override
public void onComplete(FacebookDialog.PendingCall pendingCall,
Bundle data) {
Log.d("HelloFacebook", "Success!");
}
};
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
uiHelper = new UiLifecycleHelper(this, callback);
uiHelper.onCreate(savedInstanceState);
if (savedInstanceState != null) {
String name = savedInstanceState
.getString(PENDING_ACTION_BUNDLE_KEY);
pendingAction = PendingAction.valueOf(name);
}
// try {
// PackageInfo info = getPackageManager().getPackageInfo(
// "com.facebook.samples.hellofacebook",
// PackageManager.GET_SIGNATURES);
// for (android.content.pm.Signature signature : info.signatures) {
// MessageDigest md = MessageDigest.getInstance("SHA");
// md.update(signature.toByteArray());
// Log.d("YOURHASH KEY:",
// Base64.encodeToString(md.digest(), Base64.DEFAULT));
// }
// } catch (NameNotFoundException e) {
// System.out.println();
// } catch (NoSuchAlgorithmException e) {
// System.out.println();
// } catch (Exception e) {
// // TODO: handle exception
// System.out.println();
// }
setContentView(R.layout.activity_more);
loginButton = (LoginButton) findViewById(R.id.login_button);
loginButton
.setUserInfoChangedCallback(new LoginButton.UserInfoChangedCallback() {
@Override
public void onUserInfoFetched(GraphUser user) {
FacebookClass.this.user = user;
updateUI();
// It's possible that we were waiting for this.user to
// be populated in order to post a
// status update.
handlePendingAction();
}
});
profilePictureView = (ProfilePictureView) findViewById(R.id.profilePicture);
greeting = (TextView) findViewById(R.id.greeting);
postStatusUpdateButton = (Button) findViewById(R.id.postStatusUpdateButton);
postStatusUpdateButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
onClickPostStatusUpdate();
}
});
// postPhotoButton = (Button) findViewById(R.id.postPhotoButton);
// postPhotoButton.setOnClickListener(new View.OnClickListener() {
// public void onClick(View view) {
// onClickPostPhoto();
// }
// });
pickFriendsButton = (Button) findViewById(R.id.pickFriendsButton);
pickFriendsButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
onClickPickFriends();
}
});
// pickPlaceButton = (Button) findViewById(R.id.pickPlaceButton);
// pickPlaceButton.setOnClickListener(new View.OnClickListener() {
// public void onClick(View view) {
// onClickPickPlace();
// }
// });
controlsContainer = (ViewGroup) findViewById(R.id.main_ui_container);
final FragmentManager fm = getSupportFragmentManager();
Fragment fragment = fm.findFragmentById(R.id.fragment_container);
if (fragment != null) {
// If we're being re-created and have a fragment, we need to a) hide
// the main UI controls and
// b) hook up its listeners again.
controlsContainer.setVisibility(View.GONE);
if (fragment instanceof FriendPickerFragment) {
setFriendPickerListeners((FriendPickerFragment) fragment);
} else if (fragment instanceof PlacePickerFragment) {
setPlacePickerListeners((PlacePickerFragment) fragment);
}
}
// Listen for changes in the back stack so we know if a fragment got
// popped off because the user
// clicked the back button.
fm.addOnBackStackChangedListener(new FragmentManager.OnBackStackChangedListener() {
@Override
public void onBackStackChanged() {
if (fm.getBackStackEntryCount() == 0) {
// We need to re-show our UI.
controlsContainer.setVisibility(View.VISIBLE);
}
}
});
canPresentShareDialog = FacebookDialog.canPresentShareDialog(this,
FacebookDialog.ShareDialogFeature.SHARE_DIALOG);
}
@Override
protected void onResume() {
super.onResume();
uiHelper.onResume();
updateUI();
}
@Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
uiHelper.onSaveInstanceState(outState);
outState.putString(PENDING_ACTION_BUNDLE_KEY, pendingAction.name());
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
uiHelper.onActivityResult(requestCode, resultCode, data, dialogCallback);
}
@Override
public void onPause() {
super.onPause();
uiHelper.onPause();
}
@Override
public void onDestroy() {
super.onDestroy();
uiHelper.onDestroy();
}
private void onSessionStateChange(Session session, SessionState state,
Exception exception) {
if (pendingAction != PendingAction.NONE
&& (exception instanceof FacebookOperationCanceledException || exception instanceof FacebookAuthorizationException)) {
new AlertDialog.Builder(FacebookClass.this)
.setTitle(R.string.cancelled)
.setMessage(R.string.permission_not_granted)
.setPositiveButton(R.string.ok, null).show();
pendingAction = PendingAction.NONE;
} else if (state == SessionState.OPENED_TOKEN_UPDATED) {
handlePendingAction();
}
updateUI();
}
private void updateUI() {
Session session = Session.getActiveSession();
boolean enableButtons = (session != null && session.isOpened());
postStatusUpdateButton.setEnabled(enableButtons
|| canPresentShareDialog);
// postPhotoButton.setEnabled(enableButtons);
pickFriendsButton.setEnabled(enableButtons);
// pickPlaceButton.setEnabled(enableButtons);
if (enableButtons && user != null) {
profilePictureView.setProfileId(user.getId());
greeting.setText(getString(R.string.hello_user, user.getFirstName()));
} else {
profilePictureView.setProfileId(null);
greeting.setText(null);
}
}
@SuppressWarnings("incomplete-switch")
private void handlePendingAction() {
PendingAction previouslyPendingAction = pendingAction;
// These actions may re-set pendingAction if they are still pending, but
// we assume they
// will succeed.
pendingAction = PendingAction.NONE;
switch (previouslyPendingAction) {
case POST_PHOTO:
postPhoto();
break;
case POST_STATUS_UPDATE:
postStatusUpdate();
break;
}
}
private interface GraphObjectWithId extends GraphObject {
String getId();
}
private void showPublishResult(String message, GraphObject result,
FacebookRequestError error) {
String title = null;
String alertMessage = null;
if (error == null) {
title = getString(R.string.success);
String id = result.cast(GraphObjectWithId.class).getId();
alertMessage = getString(R.string.successfully_posted_post,
message, id);
} else {
title = getString(R.string.error);
alertMessage = error.getErrorMessage();
}
new AlertDialog.Builder(this).setTitle(title).setMessage(alertMessage)
.setPositiveButton(R.string.ok, null).show();
}
private void onClickPostStatusUpdate() {
performPublish(PendingAction.POST_STATUS_UPDATE, canPresentShareDialog);
}
private FacebookDialog.ShareDialogBuilder createShareDialogBuilder() {
return new FacebookDialog.ShareDialogBuilder(this)
.setName("Hi")
.setDescription("Hello D")
.setLink(
"LINK")
.setPicture(
"http://tctechcrunch2011.files.wordpress.com/2013/03/facebook-android-clean1.png?w=259");
}
// ///////////////////////////////////
private void publishFeedDialog() {
Bundle params = new Bundle();
params.putString("name", "Facebook SDK for Android");
params.putString("caption",
"Build great social apps and get more installs.");
params.putString(
"description",
"The Facebook SDK for Android makes it easier and faster to develop Facebook integrated Android apps.");
params.putString("link", "https://developers.facebook.com/android");
params.putString("picture",
"https://raw.github.com/fbsamples/ios-3.x-howtos/master/Images/iossdk_logo.png");
WebDialog feedDialog = (new WebDialog.FeedDialogBuilder(this,
Session.getActiveSession(), params)).setOnCompleteListener(
new OnCompleteListener() {
@Override
public void onComplete(Bundle values,
FacebookException error) {
if (error == null) {
// When the story is posted, echo the success
// and the post Id.
final String postId = values.getString("post_id");
if (postId != null) {
Toast.makeText(getApplicationContext(),
"Posted story, id: " + postId,
Toast.LENGTH_SHORT).show();
} else {
// User clicked the Cancel button
Toast.makeText(getApplicationContext(),
"Publish cancelled", Toast.LENGTH_SHORT)
.show();
}
} else if (error instanceof FacebookOperationCanceledException) {
// User clicked the "x" button
Toast.makeText(getApplicationContext(),
"Publish cancelled", Toast.LENGTH_SHORT)
.show();
} else {
// Generic, ex: network error
Toast.makeText(getApplicationContext(),
"Error posting story", Toast.LENGTH_SHORT)
.show();
}
}
}).build();
feedDialog.show();
}
// //////////////////////////////////
// private FacebookDialog.OpenGraphActionDialogBuilder
// createActionDialogBuilder() {
//
// new FacebookDialog.OpenGraphActionDialogBuilder(MoreActivity.this,
// OpenGraphAction.this.setType("me/PROJECT_NAME:start"), "like",
// "");
// return null;
//
// }
private void postStatusUpdate() {
if (canPresentShareDialog) {
// FacebookDialog shareDialog = createActionDialogBuilder().build();
// publishFeedDialog();
FacebookDialog shareDialog = createShareDialogBuilder().build();
uiHelper.trackPendingDialogCall(shareDialog.present());
} else if (user != null && hasPublishPermission()) {
final String message = getString(R.string.status_update,
user.getFirstName(), (new Date().toString()));
Request request = Request.newStatusUpdateRequest(
Session.getActiveSession(), message, place, tags,
new Request.Callback() {
@Override
public void onCompleted(Response response) {
showPublishResult(message,
response.getGraphObject(),
response.getError());
}
});
request.executeAsync();
} else {
pendingAction = PendingAction.POST_STATUS_UPDATE;
}
}
private void onClickPostPhoto() {
performPublish(PendingAction.POST_PHOTO, false);
}
private void postPhoto() {
if (hasPublishPermission()) {
Bitmap image = BitmapFactory.decodeResource(this.getResources(),
R.drawable.icon);
Request request = Request.newUploadPhotoRequest(
Session.getActiveSession(), image, new Request.Callback() {
@Override
public void onCompleted(Response response) {
showPublishResult(getString(R.string.photo_post),
response.getGraphObject(),
response.getError());
}
});
request.executeAsync();
} else {
pendingAction = PendingAction.POST_PHOTO;
}
}
private void showPickerFragment(PickerFragment<?> fragment) {
fragment.setOnErrorListener(new PickerFragment.OnErrorListener() {
@Override
public void onError(PickerFragment<?> pickerFragment,
FacebookException error) {
String text = getString(R.string.exception, error.getMessage());
Toast toast = Toast.makeText(FacebookClass.this, text,
Toast.LENGTH_SHORT);
toast.show();
}
});
FragmentManager fm = getSupportFragmentManager();
fm.beginTransaction().replace(R.id.fragment_container, fragment)
.addToBackStack(null).commit();
controlsContainer.setVisibility(View.GONE);
// We want the fragment fully created so we can use it immediately.
fm.executePendingTransactions();
fragment.loadData(false);
}
private void onClickPickFriends() {
final FriendPickerFragment fragment = new FriendPickerFragment();
setFriendPickerListeners(fragment);
showPickerFragment(fragment);
}
private void setFriendPickerListeners(final FriendPickerFragment fragment) {
fragment.setOnDoneButtonClickedListener(new FriendPickerFragment.OnDoneButtonClickedListener() {
@Override
public void onDoneButtonClicked(PickerFragment<?> pickerFragment) {
onFriendPickerDone(fragment);
}
});
}
private void onFriendPickerDone(FriendPickerFragment fragment) {
FragmentManager fm = getSupportFragmentManager();
fm.popBackStack();
String results = "";
List<GraphUser> selection = fragment.getSelection();
tags = selection;
if (selection != null && selection.size() > 0) {
ArrayList<String> names = new ArrayList<String>();
for (GraphUser user : selection) {
names.add(user.getName());
}
results = TextUtils.join(", ", names);
} else {
results = getString(R.string.no_friends_selected);
}
showAlert(getString(R.string.you_picked), results);
}
private void onPlacePickerDone(PlacePickerFragment fragment) {
FragmentManager fm = getSupportFragmentManager();
fm.popBackStack();
String result = "";
GraphPlace selection = fragment.getSelection();
if (selection != null) {
result = selection.getName();
} else {
result = getString(R.string.no_place_selected);
}
place = selection;
showAlert(getString(R.string.you_picked), result);
}
private void onClickPickPlace() {
final PlacePickerFragment fragment = new PlacePickerFragment();
fragment.setLocation(SEATTLE_LOCATION);
fragment.setTitleText(getString(R.string.pick_seattle_place));
setPlacePickerListeners(fragment);
showPickerFragment(fragment);
}
private void setPlacePickerListeners(final PlacePickerFragment fragment) {
fragment.setOnDoneButtonClickedListener(new PlacePickerFragment.OnDoneButtonClickedListener() {
@Override
public void onDoneButtonClicked(PickerFragment<?> pickerFragment) {
onPlacePickerDone(fragment);
}
});
fragment.setOnSelectionChangedListener(new PlacePickerFragment.OnSelectionChangedListener() {
@Override
public void onSelectionChanged(PickerFragment<?> pickerFragment) {
if (fragment.getSelection() != null) {
onPlacePickerDone(fragment);
}
}
});
}
private void showAlert(String title, String message) {
new AlertDialog.Builder(this).setTitle(title).setMessage(message)
.setPositiveButton(R.string.ok, null).show();
}
private boolean hasPublishPermission() {
Session session = Session.getActiveSession();
return session != null
&& session.getPermissions().contains("publish_actions");
}
private void performPublish(PendingAction action, boolean allowNoSession) {
Session session = Session.getActiveSession();
if (session != null) {
pendingAction = action;
if (hasPublishPermission()) {
// We can do the action right away.
handlePendingAction();
return;
} else if (session.isOpened()) {
// We need to get new permissions, then complete the action when
// we get called back.
session.requestNewPublishPermissions(new Session.NewPermissionsRequest(
this, PERMISSION));
return;
}
}
if (allowNoSession) {
pendingAction = action;
handlePendingAction();
}
}
}
任何幫助？
檢查這個帖子，有結構良好的庫來解決這個問題：http://stackoverflow.com/a/23853937/1891118 –