Example usage for android.content.pm Signature toByteArray

Introduction

In this page you can find the example usage for android.content.pm Signature toByteArray.

Prototype

public byte[] toByteArray() 

Source Link

Usage

From source file:com.letsgood.sampleapp.SignInActivity.java

private void printFacebookKeyHash() {
    // Add code to print out the key hash
    try {/*from  www  .j a v  a 2 s.c  o  m*/
        PackageInfo info = getPackageManager().getPackageInfo("com.letsgood.sampleapp",
                PackageManager.GET_SIGNATURES);
        for (Signature signature : info.signatures) {
            MessageDigest md = MessageDigest.getInstance("SHA");
            md.update(signature.toByteArray());
            Log.d("KeyHash:", Base64.encodeToString(md.digest(), Base64.DEFAULT));
        }
    } catch (PackageManager.NameNotFoundException e) {

    } catch (NoSuchAlgorithmException e) {

    }
}

---

From source file:com.socialapp.eventmanager.LoginActivity.java

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    if (savedInstanceState != null) {
        userSkippedLogin = savedInstanceState.getBoolean(USER_SKIPPED_LOGIN_KEY);
    }//  w  w w  . ja va2s.c om

    try {
        PackageInfo info = getPackageManager().getPackageInfo("com.socialapp.eventmanager",
                PackageManager.GET_SIGNATURES);
        for (Signature signature : info.signatures) {
            MessageDigest md = MessageDigest.getInstance("SHA");
            md.update(signature.toByteArray());
            String keyHash = Base64.encodeToString(md.digest(), Base64.DEFAULT);
            Log.d("************* KeyHash:", Base64.encodeToString(md.digest(), Base64.DEFAULT));
        }
    } catch (PackageManager.NameNotFoundException e) {

    } catch (NoSuchAlgorithmException e) {

    }

    FacebookSdk.sdkInitialize(getApplicationContext());

    callbackManager = CallbackManager.Factory.create();

    accessTokenTracker = new AccessTokenTracker() {
        @Override
        protected void onCurrentAccessTokenChanged(AccessToken oldAccessToken, AccessToken currentAccessToken) {

            checkAndRedirectOnFBLogin();

            if (isResumed) {
                FragmentManager manager = getSupportFragmentManager();
                int backStackSize = manager.getBackStackEntryCount();
                for (int i = 0; i < backStackSize; i++) {
                    manager.popBackStack();
                }
                if (currentAccessToken != null) {
                    // showFragment(SELECTION, false);
                } else {
                    showFragment(SPLASH, true);
                }
            }
        }
    };

    setContentView(R.layout.activity_login);

    FragmentManager fm = getSupportFragmentManager();
    SplashFragment splashFragment = (SplashFragment) fm.findFragmentById(R.id.splashFragment);
    fragments[SPLASH] = splashFragment;

    FragmentTransaction transaction = fm.beginTransaction();
    // for(int i = 0; i < fragments.length; i++) {
    transaction.hide(fragments[0]);
    // }
    transaction.commit();

    splashFragment.setSkipLoginCallback(new SplashFragment.SkipLoginCallback() {
        @Override
        public void onSkipLoginPressed() {
            userSkippedLogin = true;
            //showFragment(SELECTION, false);
        }
    });

    accessTokenTracker.startTracking();

    SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
    String userLoggedIn = prefs.getString("email", null);
    if (userLoggedIn != null) {
        Intent intent = new Intent(this, MainActivity.class);
        startActivity(intent);
    }
}

---

From source file:com.example.yudiandrean.socioblood.LoginActivity.java

@Override
public void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);

    //FacebookSdk.sdkInitialize(this.getApplicationContext());
    setContentView(R.layout.activity_login);

    try {/*from  w w  w . j  a va  2s.c om*/
        PackageInfo info = getPackageManager().getPackageInfo(getPackageName(), PackageManager.GET_SIGNATURES);
        for (Signature signature : info.signatures) {
            MessageDigest md = MessageDigest.getInstance("SHA");
            md.update(signature.toByteArray());
            Log.d("KeyHash:", Base64.encodeToString(md.digest(), Base64.DEFAULT));
        }
    } catch (PackageManager.NameNotFoundException e) {
    } catch (NoSuchAlgorithmException e) {
    }

    TwitterAuthConfig authConfig = new TwitterAuthConfig(TWITTER_KEY, TWITTER_SECRET);
    Fabric.with(this, new Twitter(authConfig));
    //instantiate callbacks manager
    //mCallbackManager = CallbackManager.Factory.create();

    inputEmail = (EditText) findViewById(R.id.email);
    inputPassword = (EditText) findViewById(R.id.password);
    Btnregister = (Button) findViewById(R.id.registerbtn);
    btnLogin = (Button) findViewById(R.id.login);
    passreset = (Button) findViewById(R.id.passres);
    //        facebookLogin = (LoginButton) findViewById(R.id.facebook_login);
    //facebookLogin.setReadPermissions(permissionNeeds);

    session = new SessionManager(getApplicationContext());

    // Check if user is already logged in or not
    if (session.isLoggedIn()) {
        // User is already logged in. Take him to main activity
        Intent intent = new Intent(LoginActivity.this, FeedActivity.class);
        startActivity(intent);
        finish();
    }

    //        accessTokenTracker = new AccessTokenTracker() {
    //            @Override
    //            protected void onCurrentAccessTokenChanged(
    //                    AccessToken oldAccessToken,
    //                    AccessToken currentAccessToken) {
    //                // App code
    //            }
    //        };
    //
    //        profileTracker = new ProfileTracker() {
    //            @Override
    //            protected void onCurrentProfileChanged(
    //                    Profile oldProfile,
    //                    Profile currentProfile) {
    //                // App code
    //            }
    //        };

    passreset.setOnClickListener(new View.OnClickListener() {
        public void onClick(View view) {
            Intent myIntent = new Intent(view.getContext(), PasswordReset.class);
            startActivityForResult(myIntent, 0);
            finish();
        }
    });

    Btnregister.setOnClickListener(new View.OnClickListener() {
        public void onClick(View view) {
            Intent myIntent = new Intent(view.getContext(), Register.class);
            startActivityForResult(myIntent, 0);
            finish();
        }
    });

    /**
     * Login button click event
     * A Toast is set to alert when the Email and Password field is empty
     **/
    btnLogin.setOnClickListener(new View.OnClickListener() {

        public void onClick(View view) {

            if ((!inputEmail.getText().toString().equals(""))
                    && (!inputPassword.getText().toString().equals(""))) {
                NetAsync(view);
            } else if ((!inputEmail.getText().toString().equals(""))) {
                Toast.makeText(getApplicationContext(), "Password field empty", Toast.LENGTH_SHORT).show();
            } else if ((!inputPassword.getText().toString().equals(""))) {
                Toast.makeText(getApplicationContext(), "Email field empty", Toast.LENGTH_SHORT).show();
            } else {
                Toast.makeText(getApplicationContext(), "Email and Password field are empty",
                        Toast.LENGTH_SHORT).show();
            }
        }
    });

    //        //facebook login
    //        facebookLogin.registerCallback(mCallbackManager, new FacebookCallback<LoginResult>() {
    //
    //
    //            @Override
    //            public void onSuccess(LoginResult loginResults) {
    //                //login ok  get access token
    //                AccessToken.getCurrentAccessToken();
    //
    //
    //            }
    //
    //            @Override
    //            public void onCancel() {
    //
    //                Toast.makeText(getApplicationContext(),
    //                        "Login Cancelled", Toast.LENGTH_SHORT).show();
    //            }
    //
    //
    //            @Override
    //            public void onError(FacebookException e) {
    //                Toast.makeText(getApplicationContext(),
    //                        "Login Failed!", Toast.LENGTH_SHORT).show();
    //            }
    //        });

    //Session Manager

    //        TwitterSession session =
    //                Twitter.getSessionManager().getActiveSession();
    //        TwitterAuthToken authToken = session.getAuthToken();
    //        String token = authToken.token;
    //        String secret = authToken.secret;

    //Guest Authentication
    TwitterCore.getInstance().logInGuest(new Callback<AppSession>() {
        @Override
        public void success(Result<AppSession> result) {
            AppSession guestAppSession = result.data;
        }

        @Override
        public void failure(TwitterException exception) {
            // unable to get an AppSession with guest auth
        }
    });

}

---

From source file:facebook.hellofriends.app.MyFaceBookActivity.java

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    try {//  ww  w .j  a  va2  s. co m
        PackageInfo info = getPackageManager().getPackageInfo("com.example.in", PackageManager.GET_SIGNATURES);
        for (Signature signature : info.signatures) {
            MessageDigest md = MessageDigest.getInstance("SHA");
            md.update(signature.toByteArray());
            Log.d("KeyHash:", Base64.encodeToString(md.digest(), Base64.DEFAULT));
            System.out.println("Key hash::::::::::::" + md.digest() + " " + Base64.DEFAULT);
        }
    } catch (NameNotFoundException e) {

    } catch (NoSuchAlgorithmException e) {

    }

    uiHelper = new UiLifecycleHelper(this, callback);
    uiHelper.onCreate(savedInstanceState);
    logger = AppEventsLogger.newLogger(this);
    if (savedInstanceState != null) {
        String name = savedInstanceState.getString(PENDING_ACTION_BUNDLE_KEY);
        pendingAction = PendingAction.valueOf(name);
    }

    setContentView(R.layout.main);

    loginButton = (LoginButton) findViewById(R.id.login_button);
    loginButton.setUserInfoChangedCallback(new LoginButton.UserInfoChangedCallback() {
        @Override
        public void onUserInfoFetched(GraphUser user) {
            MyFaceBookActivity.this.user = user;
            updateUI();
            System.out.println("hello:::::::::::::" + user);
            logger.logEvent(AppEventsConstants.EVENT_NAME_ACTIVATED_APP);
            logger.logEvent("Login Button pressed By " + user);
            // 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);
            }
        }
    });

    // Can we present the share dialog for regular links?
    canPresentShareDialog = FacebookDialog.canPresentShareDialog(this,
            FacebookDialog.ShareDialogFeature.SHARE_DIALOG);
    // Can we present the share dialog for photos?
    canPresentShareDialogWithPhotos = FacebookDialog.canPresentShareDialog(this,
            FacebookDialog.ShareDialogFeature.PHOTOS);
}

---

From source file:com.amansoni.tripbook.activity.FacebookActivity.java

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    // Add code to print out the key hash
    try {//w  ww . j  a v  a 2  s.c o  m
        PackageInfo info = getPackageManager().getPackageInfo("com.amansoni.tripbook",
                PackageManager.GET_SIGNATURES);
        for (Signature signature : info.signatures) {
            MessageDigest md = MessageDigest.getInstance("SHA");
            md.update(signature.toByteArray());
            Log.d("KeyHash:", Base64.encodeToString(md.digest(), Base64.DEFAULT));
        }
    } catch (PackageManager.NameNotFoundException e) {

    } catch (NoSuchAlgorithmException e) {

    }
    uiHelper = new UiLifecycleHelper(this, callback);
    uiHelper.onCreate(savedInstanceState);

    if (savedInstanceState != null) {
        String name = savedInstanceState.getString(PENDING_ACTION_BUNDLE_KEY);
        pendingAction = PendingAction.valueOf(name);
    }

    setContentView(R.layout.facebook_activity);

    loginButton = (LoginButton) findViewById(R.id.login_button);
    loginButton.setUserInfoChangedCallback(new LoginButton.UserInfoChangedCallback() {
        @Override
        public void onUserInfoFetched(GraphUser user) {
            FacebookActivity.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);
            }
        }
    });

    // Can we present the share dialog for regular links?
    canPresentShareDialog = FacebookDialog.canPresentShareDialog(this,
            FacebookDialog.ShareDialogFeature.SHARE_DIALOG);
    // Can we present the share dialog for photos?
    canPresentShareDialogWithPhotos = FacebookDialog.canPresentShareDialog(this,
            FacebookDialog.ShareDialogFeature.PHOTOS);
}

---

From source file:com.namnv.project.kidpaint.HelloFacebookSampleActivity.java

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    // Add code to print out the key hash
    try {//from  ww w.j a  v a  2s  . c o  m
        PackageInfo info = getPackageManager().getPackageInfo("com.facebook.samples.hellofacebook",
                PackageManager.GET_SIGNATURES);
        for (Signature signature : info.signatures) {
            MessageDigest md = MessageDigest.getInstance("SHA");

            md.update(signature.toByteArray());
            Log.d("KeyHash:", Base64.encodeToString(md.digest(), Base64.DEFAULT));
        }
    } catch (PackageManager.NameNotFoundException e) {

    } catch (NoSuchAlgorithmException e) {

    }

    uiHelper = new UiLifecycleHelper(this, callback);
    uiHelper.onCreate(savedInstanceState);

    if (savedInstanceState != null) {
        String name = savedInstanceState.getString(PENDING_ACTION_BUNDLE_KEY);
        pendingAction = PendingAction.valueOf(name);
    }

    setContentView(R.layout.sample_main);

    loginButton = (LoginButton) findViewById(R.id.login_button);
    loginButton.setUserInfoChangedCallback(new LoginButton.UserInfoChangedCallback() {
        @Override
        public void onUserInfoFetched(GraphUser user) {
            HelloFacebookSampleActivity.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);
            }
        }
    });

    // Can we present the share dialog for regular links?
    canPresentShareDialog = FacebookDialog.canPresentShareDialog(this,
            FacebookDialog.ShareDialogFeature.SHARE_DIALOG);
    // Can we present the share dialog for photos?
    canPresentShareDialogWithPhotos = FacebookDialog.canPresentShareDialog(this,
            FacebookDialog.ShareDialogFeature.PHOTOS);
}

---

From source file:com.game.simple.Game3.java

private void printKeyHash() {
    // Add code to print out the key hash
    try {/*  w  w w.ja  va 2  s .c o m*/
        PackageInfo info = getPackageManager().getPackageInfo("com.game.simple", PackageManager.GET_SIGNATURES);
        for (Signature signature : info.signatures) {
            MessageDigest md = MessageDigest.getInstance("SHA");
            md.update(signature.toByteArray());
            Log.d("KeyHash:", Base64.encodeToString(md.digest(), Base64.DEFAULT));
        }
    } catch (NameNotFoundException e) {
        Log.d("KeyHash:", e.toString());
    } catch (NoSuchAlgorithmException e) {
        Log.d("KeyHash:", e.toString());
    }
}

---

From source file:util.facebook.FBManager.java

@Override
public void onCreate(Bundle savedInstanceState) {
    if (Define.g_bDebugTest) {
        try {//from ww w. j  a v a2  s  . c  om
            PackageInfo info = getApplicationContext().getPackageManager()
                    .getPackageInfo("com.wh.BluffingGirlEN", PackageManager.GET_SIGNATURES);
            for (Signature signature : info.signatures) {
                MessageDigest md = MessageDigest.getInstance("SHA");
                md.update(signature.toByteArray());
                Log.d("GameApp", "GameApp:" + Base64.encodeToString(md.digest(), Base64.DEFAULT));
            }
        } catch (NameNotFoundException e) {
            Log.e("GameApp:" + "name not found", "GameApp:" + e.toString());
        } catch (NoSuchAlgorithmException e) {
            Log.e("GameApp:" + "no such an algorithm", "GameApp:" + e.toString());
        }
    }

    super.onCreate(savedInstanceState);
    //here to change  fb application id for new session,
    //Define.MyLog(m_strAppID);
    //Session l_NewSession = new Session.Builder(getBaseContext()).setApplicationId(m_strAppID).build();
    //Session.setActiveSession(l_NewSession);

    uiHelper = new UiLifecycleHelper(this, callback);
    uiHelper.onCreate(savedInstanceState);
    if (savedInstanceState != null) {
        String name = savedInstanceState.getString(PENDING_ACTION_BUNDLE_KEY);
        pendingAction = PendingAction.valueOf(name);
    }
    setContentView(R.layout.fbmanagerlayout);
    loginButton = (LoginButton) findViewById(R.id.login_button);
    if (loginButton != null) {
        loginButton.setUserInfoChangedCallback(new LoginButton.UserInfoChangedCallback() {
            @Override
            public void onUserInfoFetched(GraphUser user) {
                FBManager.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);
            }
        }
    });

    // Can we present the share dialog for regular links?
    canPresentShareDialog = FacebookDialog.canPresentShareDialog(this,
            FacebookDialog.ShareDialogFeature.SHARE_DIALOG);
    // Can we present the share dialog for photos?
    canPresentShareDialogWithPhotos = FacebookDialog.canPresentShareDialog(this,
            FacebookDialog.ShareDialogFeature.PHOTOS);
}

---

From source file:org.technovanza.technovanza14.HelloFacebookSampleActivity.java

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    Parse.initialize(this, "jWNXwn3j7fmaub8bFMWYy3sRWJgXCMaqCljKOUyn",
            "AmQgVA2i3Gc45vHfYwqfPcJJzAyvwihvmgYcRx86");

    uiHelper = new UiLifecycleHelper(this, callback);
    uiHelper.onCreate(savedInstanceState);

    try {//  ww  w  .j av a 2  s  . c o m
        PackageInfo info = getPackageManager().getPackageInfo(getPackageName(), PackageManager.GET_SIGNATURES);
        for (Signature signature : info.signatures) {
            MessageDigest md = MessageDigest.getInstance("SHA");
            md.update(signature.toByteArray());
            String sign = Base64.encodeToString(md.digest(), Base64.DEFAULT);
            Log.e("MY KEY HASH:", sign);
            Toast.makeText(getApplicationContext(), sign, Toast.LENGTH_LONG).show();
            Log.d("mohit", "Signature" + sign);
            System.out.println("Signature" + sign);

            //  TextView tvmyName = (TextView)findViewById(R.id.txtv);
            //    /tvmyName.setText(Base64.encodeToString((md.digest()));

        }
    } catch (NameNotFoundException e) {
        Log.d("mohit", "Exception 1" + e);
    } catch (NoSuchAlgorithmException e) {
        Log.d("mohit", "Exception 2" + e);

    }

    if (savedInstanceState != null) {
        String name = savedInstanceState.getString(PENDING_ACTION_BUNDLE_KEY);
        pendingAction = PendingAction.valueOf(name);
    }

    setContentView(R.layout.main);

    loginButton = (LoginButton) findViewById(R.id.login_button);
    loginButton.setUserInfoChangedCallback(new LoginButton.UserInfoChangedCallback() {
        @Override
        public void onUserInfoFetched(GraphUser user) {
            HelloFacebookSampleActivity.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();
        }
    });
    inviteFriends = (Button) findViewById(R.id.inviteFriends);
    inviteFriends.setOnClickListener(new View.OnClickListener() {
        public void onClick(View view) {
            onClickInviteFriends();
        }
    });

    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();
        }
    });
    technoPage = (Button) findViewById(R.id.TechnoPage);
    technoPage.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            //TODO Auto-generated method stub

            Intent facebookIntent = getOpenFacebookIntent(HelloFacebookSampleActivity.this);
            startActivity(facebookIntent);
        }
    });

    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);
            }
        }
    });

    // Can we present the share dialog for regular links?
    canPresentShareDialog = FacebookDialog.canPresentShareDialog(this,
            FacebookDialog.ShareDialogFeature.SHARE_DIALOG);
    // Can we present the share dialog for photos?
    canPresentShareDialogWithPhotos = FacebookDialog.canPresentShareDialog(this,
            FacebookDialog.ShareDialogFeature.PHOTOS);
}

---

From source file:com.jrummyapps.android.safetynet.SafetyNetHelper.java

@SuppressLint("PackageManagerGetSignatures")
private List<String> getApkCertificateDigests() {
    List<String> apkCertificateDigests = new ArrayList<>();
    PackageManager pm = context.getPackageManager();
    PackageInfo packageInfo;/*from   www .  ja v  a2s .  co  m*/
    try {
        packageInfo = pm.getPackageInfo(context.getPackageName(), PackageManager.GET_SIGNATURES);
    } catch (PackageManager.NameNotFoundException wtf) {
        return apkCertificateDigests;
    }
    Signature[] signatures = packageInfo.signatures;
    for (Signature signature : signatures) {
        try {
            MessageDigest md = MessageDigest.getInstance(SHA_256);
            md.update(signature.toByteArray());
            byte[] digest = md.digest();
            apkCertificateDigests.add(Base64.encodeToString(digest, Base64.NO_WRAP));
        } catch (NoSuchAlgorithmException ignored) {
        }
    }
    return apkCertificateDigests;
}

---

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