0
我在我的android應用程序中有一個Facebook登錄選項。如何在使用android-facebook api時忽略安裝在設備上的Facebook android應用程序？
當我的設備上沒有安裝Facebook應用程序時，此登錄工作正常。但是，當安裝facebook應用程序時，會在少數情況下產生問題。
那麼，如何告訴我的應用程序的Facebook登錄，以忽略如果Facebook應用程序已安裝並以前面的方式繼續（假設Facebook應用程序未安裝）？
這是當我點擊fbLoginButton稱爲活動：
public class Example extends Activity {
public static final String APP_ID = myAppIdHere;
private LoginButton mLoginButton;
private TextView mText;
private Button mRequestButton;
private Button mPostButton;
private Button mDeleteButton;
private Button mUploadButton;
public static Activity ExampleActivity;
private Facebook mFacebook;
private AsyncFacebookRunner mAsyncRunner;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
ExampleActivity = this;
if (APP_ID == null) {
Util.showAlert(this, "Warning", "Facebook Applicaton ID must be " +
"specified before running this example: see Example.java");
}
setContentView(R.layout.facebook);
mLoginButton = (LoginButton) findViewById(R.id.login);
mFacebook = new Facebook(APP_ID);
mAsyncRunner = new AsyncFacebookRunner(mFacebook);
SessionStore.restore(mFacebook, this);
SessionEvents.addAuthListener(new SampleAuthListener());
SessionEvents.addLogoutListener(new SampleLogoutListener());
mLoginButton.init(this, mFacebook);
}
@Override
protected void onActivityResult(int requestCode, int resultCode,
Intent data) {
mFacebook.authorizeCallback(requestCode, resultCode, data);
}
public class SampleAuthListener implements AuthListener {
public void onAuthSucceed() {
}
public void onAuthFail(String error) {
}
}
public class SampleLogoutListener implements LogoutListener {
public void onLogoutBegin() {
}
public void onLogoutFinish() {
}
}
這是LoginButton類：
public class LoginButton extends ImageButton {
public static Facebook mFb;
public static String facebookID;
public static String firstName;
public static String lastName;
public static String email = "";
public static String sex;
private Handler mHandler;
private SessionListener mSessionListener = new SessionListener();
private String[] mPermissions = new String[] { "read_stream", "email" };
private Activity mActivity;
public LoginButton(Context context) {
super(context);
}
public LoginButton(Context context, AttributeSet attrs) {
super(context, attrs);
}
public LoginButton(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
}
public void init(final Activity activity, final Facebook fb) {
init(activity, fb, new String[] {});
}
public void init(final Activity activity, final Facebook fb,
final String[] permissions) {
mActivity = activity;
mFb = fb;
mPermissions = new String[] { "read_stream", "email" };
;
mHandler = new Handler();
setBackgroundColor(Color.TRANSPARENT);
setAdjustViewBounds(true);
if(mFb.isSessionValid()){
getUser();
SessionEvents.onLogoutBegin();
AsyncFacebookRunner asyncRunner = new AsyncFacebookRunner(mFb);
asyncRunner.logout(getContext(), new LogoutRequestListener());
}else{
setImageResource(R.drawable.login_button);
drawableStateChanged();
}
SessionEvents.addAuthListener(mSessionListener);
SessionEvents.addLogoutListener(mSessionListener);
setOnClickListener(new ButtonOnClickListener());
}
private final class ButtonOnClickListener implements OnClickListener {
public void onClick(View arg0) {
if (mFb.isSessionValid()) {
getUser();
SessionEvents.onLogoutBegin();
AsyncFacebookRunner asyncRunner = new AsyncFacebookRunner(mFb);
asyncRunner.logout(getContext(), new LogoutRequestListener());
} else {
mFb.authorize(mActivity, mPermissions,
new LoginDialogListener());
}
}
}
private final class LoginDialogListener implements DialogListener {
public void onComplete(Bundle values) {
SessionEvents.onLoginSuccess();
}
public void onFacebookError(FacebookError error) {
SessionEvents.onLoginError(error.getMessage());
}
public void onError(DialogError error) {
SessionEvents.onLoginError(error.getMessage());
}
public void onCancel() {
SessionEvents.onLoginError("Action Canceled");
}
}
private class LogoutRequestListener extends BaseRequestListener {
public void onComplete(String response, final Object state) {
mHandler.post(new Runnable() {
public void run() {
SessionEvents.onLogoutFinish();
}
});
}
}
private class SessionListener implements AuthListener, LogoutListener {
public void onAuthSucceed() {
setImageResource(R.drawable.logout_button);
SessionStore.save(mFb, getContext());
}
public void onAuthFail(String error) {
}
public void onLogoutBegin() {
}
public void onLogoutFinish() {
SessionStore.clear(getContext());
setImageResource(R.drawable.login_button);
}
}
public static void getUser() {
try {
JSONObject json = Util.parseJson(mFb.request("me"));
facebookID = json.getString("id");
firstName = json.getString("first_name");
lastName = json.getString("last_name");
email = json.getString("email");
sex = json.getString("gender");
String mFirstName = firstName;
String mLastName = lastName;
String mEmail = email;
String mSex = sex;
Log.d("User Details", "You are logged in : " + facebookID
+ mFirstName + "." + mLastName + " Email is: " + mEmail
+ "-" + mSex);
SharedPreferences.Editor editor = SignUpActivity.settings.edit();
// Set "hasLoggedIn" to true
editor.putBoolean("hasLoggedIn", true);
editor.putString("fbEmail", email);
editor.putString("fbId", facebookID);
editor.putString("fbSex", sex);
editor.putString("fbFirstname", firstName);
editor.putString("fbLastname", lastName);
// Commit the edits!
editor.commit();
} catch (Exception e) {
// TODO: handle exception
Log.d("Exception in getUser", "+++++" + e.toString());
}
}
}
這是SessionEvents類：
public class SessionEvents {
private static LinkedList<AuthListener> mAuthListeners = new LinkedList<AuthListener>();
private static LinkedList<LogoutListener> mLogoutListeners = new LinkedList<LogoutListener>();
public static void addAuthListener(AuthListener listener) {
mAuthListeners.add(listener);
}
public static void removeAuthListener(AuthListener listener) {
mAuthListeners.remove(listener);
}
public static void addLogoutListener(LogoutListener listener) {
mLogoutListeners.add(listener);
}
public static void removeLogoutListener(LogoutListener listener) {
mLogoutListeners.remove(listener);
}
public static void onLoginSuccess() {
LoginButton.getUser();
for (AuthListener listener : mAuthListeners) {
listener.onAuthSucceed();
}
}
public static void onLoginError(String error) {
for (AuthListener listener : mAuthListeners) {
listener.onAuthFail(error);
}
}
public static void onLogoutBegin() {
for (LogoutListener l : mLogoutListeners) {
l.onLogoutBegin();
}
}
public static void onLogoutFinish() {
for (LogoutListener l : mLogoutListeners) {
l.onLogoutFinish();
}
}
public static interface AuthListener {
public void onAuthSucceed();
public void onAuthFail(String error);
}
public static interface LogoutListener {
public void onLogoutBegin();
public void onLogoutFinish();
}
}
這是SessionStore類：
public class SessionStore extends Activity{
private static final String TOKEN = "access_token";
private static final String EXPIRES = "expires_in";
private static final String KEY = "facebook-session";
public static boolean save(Facebook session, Context context) {
Context contextObj = Example.ExampleActivity;
Intent i=new Intent(contextObj , SignUpActivity.class);
contextObj.startActivity(i);
Editor editor =
context.getSharedPreferences(KEY, Context.MODE_PRIVATE).edit();
editor.putString(TOKEN, session.getAccessToken());
editor.putLong(EXPIRES, session.getAccessExpires());
return editor.commit();
}
public static boolean restore(Facebook session, Context context) {
SharedPreferences savedSession =
context.getSharedPreferences(KEY, Context.MODE_PRIVATE);
session.setAccessToken(savedSession.getString(TOKEN, null));
session.setAccessExpires(savedSession.getLong(EXPIRES, 0));
return session.isSessionValid();
}
public static void clear(Context context) {
Editor editor =
context.getSharedPreferences(KEY, Context.MODE_PRIVATE).edit();
editor.clear();
editor.commit();
}
}
這是BaseRequestListener類：
public abstract class BaseRequestListener implements RequestListener {
public void onFacebookError(FacebookError e, final Object state) {
Log.e("Facebook", e.getMessage());
e.printStackTrace();
}
public void onFileNotFoundException(FileNotFoundException e,
final Object state) {
Log.e("Facebook", e.getMessage());
e.printStackTrace();
}
public void onIOException(IOException e, final Object state) {
Log.e("Facebook", e.getMessage());
e.printStackTrace();
}
public void onMalformedURLException(MalformedURLException e,
final Object state) {
Log.e("Facebook", e.getMessage());
e.printStackTrace();
}
}
毫無疑問這將是更好的解決比避免這個問題？ Facebook應用程序安裝時發生了什麼？ – Rawkode
當我點擊我的應用程序中的Facebook登錄按鈕...它帶我到一個fbLoginButton ...點擊這個需要我到Facebook應用程序登錄屏幕（如果fb應用程序已安裝，否則將採取對話）。 ...當我輸入我的FB憑據，並打開去...它要求允許應用程序使用我的信息，我點擊好吧...然後它帶我回到fbLoginButton ....我再次點擊它並一次又一次地做同樣的過程......在第三次或第四次嘗試之後，它會登錄到我的應用程序中....所以最近怎麼了？ –
如果你想我可以粘貼代碼和圖像 –