我正在研究 android 应用程序中的 facebook 集成。我做了很多关于 facebook inn android 的错误处理的搜索，但没有发现任何问题。谁能告诉我如何在 android 中处理这些情况：
1.用户更改了她的密码，这使访问令牌无效。2.用户取消授权您的应用程序。3.用户退出Facebook。
我的 facebook 集成代码在这里：
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 void onSessionStateChange(Session session, SessionState state, Exception exception) {
if ( exception instanceof FacebookOperationCanceledException ||
exception instanceof FacebookAuthorizationException)
{
new AlertDialog.Builder(MainWindow.this)
.setTitle("cancel")
.setMessage("your permission has expired.")
.setPositiveButton("ok", null)
.show();
}
}
private void onClickFacebookRequest()
{
if (session.isOpened())
{
sendRequests();
} else {
StatusCallback callback = new StatusCallback() {
public void call(Session session, SessionState state, Exception exception) {
if (exception != null) {
new AlertDialog.Builder(MainWindow.this)
.setTitle(R.string.login_failed_dialog_title)
.setMessage(exception.getMessage())
.setPositiveButton(R.string.ok_button, null)
.show();
session = createSession();
}
}
};
pendingRequest = true;
session.openForRead(new Session.OpenRequest(this).setCallback(callback));
}
}
private static final List<String> PERMISSIONS = Arrays.asList("publish_actions");
private static final String PENDING_PUBLISH_KEY = "pendingPublishReauthorization";
private void sendRequests()
{
List<String> permissions = quytechApps.getSession().getPermissions();
if (!isSubsetOf(PERMISSIONS, permissions)) {
pendingRequest = true;
Session.NewPermissionsRequest newPermissionsRequest = new Session
.NewPermissionsRequest(this, PERMISSIONS);
session.requestNewPublishPermissions(newPermissionsRequest);
return;
}
showValidationDialog("Please Wait.posting Data on Facebook");
Bitmap image = BitmapFactory.decodeResource(this.getResources(), R.drawable.splash_screen_final4);
ByteArrayOutputStream stream = new ByteArrayOutputStream();
image.compress(Bitmap.CompressFormat.PNG, 100, stream);
byte[] byteArray = stream.toByteArray();
Bundle postParams=new Bundle();
postParams.putByteArray("photo",byteArray);
postParams.putString("message", "Hi Friends I am using Twinqli Chat App.");
Request request = new Request(Session.getActiveSession(), "me/photos", postParams, HttpMethod.POST, new Request.Callback()
{
@Override
public void onCompleted(Response response) {
// TODO Auto-generated method stub
// showPublishResult(getString(R.string.photo_post), response.getGraphObject(), response.getError());
if(response.getError() == null)
{
Log.d("GraphApiSample.java Sucesses","sucess");
dismissValidatingDialog();
}
else
{
dismissValidatingDialog();
session.closeAndClearTokenInformation();
//quytechApps.getSession().
//quytechApps.setSession(null);
// Log.d("GraphApiSample.java",""+response.getError().getErrorMessage());
}
}
});
request.executeAsync();
}
private boolean isSubsetOf(Collection<String> subset, Collection<String> superset) {
for (String string : subset) {
if (!superset.contains(string)) {
return false;
}
}
return true;
}
static final String applicationId = "390611174384274";
boolean pendingRequest;
static final String PENDING_REQUEST_BUNDLE_KEY = "com.facebook.samples.graphapi:PendingRequest";
private Session createSession()
{
Session activeSession = Session.getActiveSession();
if (activeSession == null || activeSession.getState().isClosed())
{
activeSession = new Session.Builder(this).setApplicationId(applicationId).build();
Session.setActiveSession(activeSession);
}
return activeSession;
}
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (qsession.onActivityResult(this, requestCode, resultCode, data) &&
pendingRequest &&
session.getState().isOpened()) {
sendRequests();
}
}
@Override
protected void onRestoreInstanceState(Bundle savedInstanceState) {
super.onRestoreInstanceState(savedInstanceState);
pendingRequest = savedInstanceState.getBoolean(PENDING_REQUEST_BUNDLE_KEY, pendingRequest);
}
@Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
outState.putBoolean(PENDING_REQUEST_BUNDLE_KEY, pendingRequest);
}
谁能帮我 。提前致谢。