i got this one activity wherein i need to hide actionbar on the login interface then once login it will show the action bar.i got one activity only. if i put getActionBar on the main activity it gives me error.
heres the code:
@SuppressLint("NewApi") public class MainActivity extends Activity { ViewPager viewPager; PagerAdapter adapter; ProgressDialog pDialog; ImageView imgLogo; Menu menu1; ImageView header; ImageView footer; int[] bookCover = new int[] { R.drawable.image1, R.drawable.image2, R.drawable.image3, }; @SuppressLint("NewApi") @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); setupFacebookConnect(savedInstanceState); imgLogo = (ImageView)findViewById(R.id.logo); share = (ImageView) findViewById(R.id.share); // Locate the ViewPager in viewpager_main.xml viewPager = (ViewPager) findViewById(R.id.pager); // Pass results to ViewPagerAdapter Class adapter = new ViewPagerAdapter(this, bookCover); // Binds the Adapter to the ViewPager viewPager.setAdapter(adapter); final OnPageChangeListener pageChangeListener = new ViewPager.SimpleOnPageChangeListener() { @SuppressLint("NewApi") @Override public void onPageSelected(int position) { final int pos = position; share.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { switch(pos) { case 0: break; case 1: break; case 2: break; case 3: break; } } }); // When changing pages, reset the action bar actions since they are dependent // on which page is currently active. An alternative approach is to have each // fragment expose actions itself (rather than the activity exposing actions), // but for simplicity, the activity provides the actions in this sample. invalidateOptionsMenu(); } }; viewPager.setOnPageChangeListener(pageChangeListener); pageChangeListener.onPageSelected(0); facebook_connect = (Button) findViewById(R.id.facebook_login); facebook_connect.setOnClickListener(new OnClickListener() { @Override public void onClick(View arg0) { if (isFacebookConnected()) { disConnectFacebook(); } else { connectFacebook(); } } }); // Shared Preferences mSharedPreferences = getApplicationContext().getSharedPreferences("MyPref", 0); } @SuppressLint({ "InlinedApi", "NewApi" }) @Override public boolean onCreateOptionsMenu(Menu menu) { this.menu1 = menu; super.onCreateOptionsMenu(menu); getMenuInflater().inflate(R.menu.main, menu); menu.findItem(R.id.action_previous).setEnabled(viewPager.getCurrentItem() > 0); // Add either a "next" or "finish" button to the action bar, depending on which page // is currently selected. MenuItem item = menu.add(Menu.NONE, R.id.action_next, Menu.NONE,(viewPager.getCurrentItem() == adapter.getCount() - 1) ? R.string.action_finish : R.string.action_next); item.setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM | MenuItem.SHOW_AS_ACTION_WITH_TEXT); return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { int itemId = item.getItemId(); if (itemId == R.id.action_previous) { // Go to the previous step in the wizard. If there is no previous step, // setCurrentItem will do nothing. viewPager.setCurrentItem(viewPager.getCurrentItem() - 1); return true; } else if (itemId == R.id.action_next) { // Advance to the next step0.0 in the wizard. If there is no next step, setCurrentItem // will do nothing. viewPager.setCurrentItem(viewPager.getCurrentItem() + 1); return true; } return super.onOptionsItemSelected(item); } private Session.StatusCallback statusCallback = new FBSessionStatus(); public void setupFacebookConnect(Bundle savedInstanceState) { Settings.addLoggingBehavior(LoggingBehavior.INCLUDE_ACCESS_TOKENS); Session session = Session.getActiveSession(); if (session == null) { if (savedInstanceState != null) { session = Session.restoreSession(this, null, statusCallback, savedInstanceState); } if (session == null) { session = new Session(this); } Session.setActiveSession(session); if (session.getState().equals(SessionState.CREATED_TOKEN_LOADED)) { session.openForRead(new Session.OpenRequest(this) .setCallback(statusCallback)); } } } public boolean isFacebookConnected() { Session session = Session.getActiveSession(); return (session.isOpened()) ? true : false; } public void connectFacebook() { Session session = Session.getActiveSession(); if (!session.isOpened() && !session.isClosed()) { getActionBar().show(); session.openForRead(new Session.OpenRequest(this) .setCallback(statusCallback)); } else { Session.openActiveSession(this, true, statusCallback); } } @Override public void onStart() { super.onStart(); Session.getActiveSession().addCallback(statusCallback); } @Override public void onStop() { super.onStop(); Session.getActiveSession().removeCallback(statusCallback); } @Override protected void onSaveInstanceState(Bundle outState) { super.onSaveInstanceState(outState); Session session = Session.getActiveSession(); Session.saveSession(session, outState); } @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); Session.getActiveSession().onActivityResult(this, requestCode, resultCode, data); } public class FBSessionStatus implements Session.StatusCallback { @Override public void call(Session session, SessionState state, Exception exception) { onSessionStateChange(session, state, exception); } } public void disConnectFacebook() { Session session = Session.getActiveSession(); if (!session.isClosed()) { session.closeAndClearTokenInformation(); viewPager.setVisibility(View.INVISIBLE); MenuItem item1 = menu1.findItem(R.id.action_next); item1.setVisible(false); MenuItem item2 = menu1.findItem(R.id.action_previous); item2.setVisible(false); imgLogo.setVisibility(View.VISIBLE); //btnLoginTwitter.setVisibility(View.VISIBLE); share.setVisibility(View.INVISIBLE); } } private void onSessionStateChange(Session session, SessionState state, Exception exception) { // Check if the user is authenticated and // a deep link needs to be handled. if (state.isOpened()) { MenuItem item1 = menu1.findItem(R.id.action_next); item1.setVisible(true); MenuItem item2 = menu1.findItem(R.id.action_previous); item2.setVisible(true); //getActionBar().show(); share.setVisibility(View.VISIBLE); //btnLoginTwitter.setVisibility(View.INVISIBLE); //btnShare.setVisibility(View.VISIBLE); viewPager.setVisibility(View.VISIBLE); imgLogo.setVisibility(View.INVISIBLE); } } public void shareImage(String name, String caption, String desc, String link, String picture ) { Bundle params = new Bundle(); params.putString("name", name); params.putString("caption", caption); params.putString("description", desc); params.putString("link", link); //params.putString("picture", "https://www.facebook.com/photo.php?fbid=10203610233686079&set=a.10203610230766006.1073741829.1523023247&type=1&theater"); params.putString("picture", picture); WebDialog feedDialog = ( new WebDialog.FeedDialogBuilder(MainActivity.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(MainActivity.this, "Successfuly posted!", Toast.LENGTH_SHORT).show(); } else { // User clicked the Cancel button Toast.makeText(MainActivity.this, "Publish cancelled", Toast.LENGTH_SHORT).show(); } } else if (error instanceof FacebookOperationCanceledException) { // User clicked the "x" button Toast.makeText(MainActivity.this, "Publish cancelled", Toast.LENGTH_SHORT).show(); } else { // Generic, ex: network error Toast.makeText(MainActivity.this, "Error posting story", Toast.LENGTH_SHORT).show(); } } }) .build(); feedDialog.show(); } @SuppressWarnings("unused") private boolean isSubsetOf(Collection<String> subset, Collection<String> superset) { for (String string : subset) { if (!superset.contains(string)) { return false; } } return true; } }
NoActionBar”. If we want to remove the ActionBar only from specific activities, we can create a child theme with the AppTheme as it's parent, set windowActionBar to false and windowNoTitle to true and then apply this theme on an activity level by using the android:theme attribute in the AndroidManifest. xml file.
The app bar, also known as the action bar, is one of the most important design elements in your app's activities, because it provides a visual structure and interactive elements that are familiar to users.
In Android applications, Toolbar is a kind of ViewGroup that can be placed in the XML layouts of an activity. It was introduced by the Google Android team during the release of Android Lollipop(API 21). The Toolbar is basically the advanced successor of the ActionBar.
For class extending Activity :
getActionBar().hide(); getActionBar().show();
For class extending AppCompatActivity :
getSupportActionBar().hide(); getSupportActionBar().show();
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With