Java Code Examples for androidx.viewpager.widget.ViewPager#addOnPageChangeListener()

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    requestWindowFeature(Window.FEATURE_NO_TITLE);
    setContentView(R.layout.activity_views);


    mFragments.add(new CircleMenuFragment());

    tabs.add("环形菜单");


    mSectionsPagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager());
    mViewPager = (ViewPager) findViewById(R.id.container);
    mViewPager.setAdapter(mSectionsPagerAdapter);
    TabLayout tabLayout = (TabLayout) findViewById(R.id.tabs);
    mViewPager.addOnPageChangeListener(new TabLayout.TabLayoutOnPageChangeListener(tabLayout));
    tabLayout.setupWithViewPager(mViewPager);
    tabLayout.addOnTabSelectedListener(new TabLayout.ViewPagerOnTabSelectedListener(mViewPager));

}
 

private void setupViewPager(ViewPager viewPager) {
    String[] titles = {getString(R.string.crashes), getString(R.string.exceptions)};
    mainPagerAdapter = new MainPagerAdapter(getSupportFragmentManager(), titles);
    viewPager.setAdapter(mainPagerAdapter);

    viewPager.addOnPageChangeListener(new SimplePageChangeListener() {
        @Override
        public void onPageSelected(int position) {
            selectedTabPosition = position;
        }
    });

    Intent intent = getIntent();
    if (intent != null && !intent.getBooleanExtra(Constants.LANDING, false)) {
        selectedTabPosition = 1;
    }
    viewPager.setCurrentItem(selectedTabPosition);
}
 

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_multi_fragments);

    mSectionsPagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager());

    // Set up the ViewPager with the sections adapter.
    mViewPager = (ViewPager) findViewById(R.id.container);
    mViewPager.setAdapter(mSectionsPagerAdapter);

    TabLayout tabLayout = (TabLayout) findViewById(R.id.tabs);

    mViewPager.addOnPageChangeListener(new TabLayout.TabLayoutOnPageChangeListener(tabLayout));
    tabLayout.addOnTabSelectedListener(new TabLayout.ViewPagerOnTabSelectedListener(mViewPager));
    tabLayout.setupWithViewPager(mViewPager);

}
 

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_screen_slide);

    // Instantiate a ViewPager and a PagerAdapter.
    mPager = (ViewPager) findViewById(R.id.pager);
    mPagerAdapter = new ScreenSlidePagerAdapter(getSupportFragmentManager());
    mPager.setAdapter(mPagerAdapter);
    mPager.addOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() {
        @Override
        public void onPageSelected(int position) {
            // 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();
        }
    });
}
 

@Override
    public void setupViewPager(ViewPager viewPager) {

        final ViewPagerAdapter adapter = new ViewPagerAdapter(getSupportFragmentManager());
        adapter.addFragment(UserOverviewFragment.newInstance(), getString(R.string.title_tab_user_overview));
        adapter.addFragment(UserQuestsFragment.newInstance(), getString(R.string.title_tab_user_quests));
        adapter.addFragment(UserProjectsFragment.newInstance(), getString(R.string.title_tab_user_projects));
//        adapter.addFragment(UserMarksFragment.newInstance(), getString(R.string.tab_user_marks));
//        adapter.addFragment(UserProjectsDoingFragment.newInstance(), getString(R.string.tab_user_projects));
        adapter.addFragment(UserExpertisesFragment.newInstance(), getString(R.string.title_tab_user_expertises));
        adapter.addFragment(UserAchievementsFragment.newInstance(), getString(R.string.title_tab_user_achievements));
        adapter.addFragment(UserSkillsFragment.newInstance(), getString(R.string.title_tab_user_skills));
        adapter.addFragment(UserPartnershipsFragment.newInstance(), getString(R.string.title_tab_user_partnerships));
        adapter.addFragment(UserPatronagesFragment.newInstance(), getString(R.string.title_tab_user_patronages));

        if (AppSettings.Advanced.getAllowAdvancedData(this)) {
            adapter.addFragment(UserAppsFragment.newInstance(), getString(R.string.title_tab_user_apps));
        }

        viewPager.setAdapter(adapter);

        ((CustomViewPager) viewPager).disableSwiping(getString(R.string.title_tab_user_projects));

        viewPager.addOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() {
            @Override
            public void onPageSelected(int position) {
                selectedTab = position;
                app.mFirebaseAnalytics.setCurrentScreen(UserActivity.this, "User Profile -> " + adapter.getItem(position).getClass().getSimpleName(), null /* class override */);
            }
        });
        app.mFirebaseAnalytics.setCurrentScreen(UserActivity.this, "User Profile -> " + UserOverviewFragment.class.getSimpleName(), null /* class override */);
    }
 

/**
 * You must call this AFTER setting the Adapter for the ViewPager, or it won't display the right amount of points.
 *
 * @param viewPager
 */
public void setViewPager(ViewPager viewPager) {
    this.viewPager = viewPager;
    viewPager.addOnPageChangeListener(this);
    size = viewPager.getAdapter().getCount();
    invalidate();
}
 

public void setViewPager(ViewPager pager) {
    this.pager = pager;

    if (pager.getAdapter() == null) {
        throw new IllegalStateException(
                "ViewPager does not have adapter instance.");
    }

    pager.addOnPageChangeListener(pageListener);

    notifyDataSetChanged();
}
 

private void init(Context context) {
    this.context = context;
    setElevation(DimenUtils.dip2px(context, 4));
    size8 = DimenUtils.dip2px(context, 8);
    setOrientation(VERTICAL);
    colorTab = ContextCompat.getColor(context, R.color.bg_primary);
    colorTabSize = ContextCompat.getColor(context, R.color.bg_secondary);

    viewPager = new ViewPager(context);
    viewPager.setLayoutParams(new LayoutParams(LMP, LWC, 1));
    viewPager.addOnPageChangeListener(this);
    dotImageResourseId = R.drawable.dot_bg;
    addView(viewPager);

    dotContainer = new LinearLayout(context);
    dotContainer.setOrientation(LinearLayout.HORIZONTAL);
    dotContainer.setLayoutParams(new LayoutParams(LMP, DimenUtils.dip2px(context, 16)));
    dotContainer.setGravity(Gravity.CENTER_HORIZONTAL);
    addView(dotContainer);

    tabContainer = new LinearLayout(context);
    tabContainer.setOrientation(LinearLayout.HORIZONTAL);
    tabContainer.setGravity(Gravity.CENTER_VERTICAL);
    tabContainer.setBackgroundColor(ContextCompat.getColor(context, R.color.bg_primary));
    tabContainer.setLayoutParams(new LayoutParams(LMP, DimenUtils.dip2px(context, 36)));
    addView(tabContainer);
}
 

public void setViewPager(ViewPager viewPager) {
    this.viewPager = viewPager;
    viewPager.addOnPageChangeListener(this);
    setPageCount(viewPager.getAdapter().getCount());
    viewPager.getAdapter().registerDataSetObserver(new DataSetObserver() {
        @Override
        public void onChanged() {
            setPageCount(InkPageIndicator.this.viewPager.getAdapter().getCount());
            invalidate();
        }
    });
}
 

private void initViewPager(Context context) {
  mViewPager = new ViewPager(context);
  mViewPager.setLayoutParams(new ViewGroup.LayoutParams(
      ViewGroup.LayoutParams.MATCH_PARENT,
      ViewGroup.LayoutParams.MATCH_PARENT));

  mPagerAdapter = new InnerPagePagerAdapter();
  mViewPager.setAdapter(mPagerAdapter);
  mViewPager.addOnPageChangeListener(new InnerPageChangeListener());

  getContainerView().addView(mViewPager);
}
 

public void setViewPager(ViewPager viewPager) {
    this.viewPager = viewPager;
    viewPager.addOnPageChangeListener(this);
    setPageCount(viewPager.getAdapter().getCount());
    viewPager.getAdapter().registerDataSetObserver(new DataSetObserver() {
        @Override
        public void onChanged() {
            setPageCount(DynamicPageIndicator.this.viewPager.getAdapter().getCount());
        }
    });
    setCurrentPageImmediate();
}
 

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_featurepager);

    Toolbar toolbar = findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);
    getSupportActionBar().setDisplayHomeAsUpEnabled(true);

    Bundle extras = getIntent().getExtras();
    featuresList = extras.getParcelableArrayList(FeatureUtilities.KEY_FEATURESLIST);
    isReadOnly = extras.getBoolean(FeatureUtilities.KEY_READONLY);

    selectedFeature = featuresList.get(0);
    PagerAdapter featureAdapter = new FeaturePageAdapter(this, featuresList, isReadOnly, getSupportFragmentManager());

    ViewPager featuresPager = findViewById(R.id.featurePager);
    // ViewPager viewPager = new ViewPager(this);
    featuresPager.setAdapter(featureAdapter);
    featuresPager.addOnPageChangeListener(this);

    getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_HIDDEN);

    tableNameView = findViewById(R.id.tableNameView);
    dbNameView = findViewById(R.id.databaseNameView);
    featureCounterView = findViewById(R.id.featureCounterView);

    onPageSelected(0);
}
 

@Override
public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
    super.onViewCreated(view, savedInstanceState);
    mViewPager = (ViewPager) view;
    mAdapter = new BasePagerAdapter();
    mViewPager.addOnPageChangeListener(this);
    initCells();
    YcShareElement.postStartTransition(getActivity());
}
 

protected void setupWithViewPager(@NonNull TabLayout tabLayout, @NonNull ViewPager viewPager) {
    final PagerAdapter adapter = viewPager.getAdapter();
    if (adapter == null) {
        throw new IllegalArgumentException("ViewPager does not have a PagerAdapter set");
    }

    setTabsFromPagerAdapter(tabLayout, adapter, viewPager.getCurrentItem());

    viewPager.getAdapter().registerDataSetObserver(mInternalDataSetObserver);

    viewPager.addOnPageChangeListener(mInternalTabLayoutOnPageChangeListener);
    viewPager.addOnAdapterChangeListener(mInternalOnAdapterChangeListener);

    tabLayout.addOnTabSelectedListener(mInternalOnTabSelectedListener);
}
 

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    mFragmentList.add(new TabFragment(titles[0], colors[0]));
    mFragmentList.add(new TabFragment(titles[1], colors[1]));
    mFragmentList.add(new TabFragment(titles[2], colors[2]));
    mFragmentList.add(new TabFragment(titles[3], colors[3]));
    ViewPager viewPager = findViewById(R.id.viewPager);
    FragmentStatePagerAdapter adapter = new FragmentStatePagerAdapter(getSupportFragmentManager()) {
        @Override
        public Fragment getItem(int position) {
            return mFragmentList.get(position);
        }

        @Override
        public int getCount() {
            return mFragmentList.size();
        }
    };
    viewPager.setAdapter(adapter);
    TabLayout tabLayout = findViewById(R.id.tabLayout);
    tabLayout.setupWithViewPager(viewPager);
    tabBubbleAnimator = new TabBubbleAnimator(tabLayout);
    tabBubbleAnimator.addTabItem(titles[0], R.drawable.ic_grid, colors[0]);
    tabBubbleAnimator.addTabItem(titles[1], R.drawable.ic_clock,colors[1]);
    tabBubbleAnimator.addTabItem(titles[2], R.drawable.ic_folder, colors[2]);
    tabBubbleAnimator.addTabItem(titles[3], R.drawable.ic_menu, colors[3]);
    tabBubbleAnimator.setUnselectedColorId(Color.BLACK);
    tabBubbleAnimator.highLightTab(0);
    viewPager.addOnPageChangeListener(tabBubbleAnimator);
}
 

@Override
public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    final View view = super.onCreateView(inflater, container, savedInstanceState);
    viewPager = (ViewPager) (view != null ? view.findViewById(R.id.fragment_device_detail_child_view_pager) : null);
    if (viewPager != null) {
        viewPager.setOffscreenPageLimit(1);
    }
    populate();

    viewPager.removeOnPageChangeListener(onPageChangeListener);
    viewPager.addOnPageChangeListener(onPageChangeListener);
    return view;
}
 

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    mFragmentList.add(new TabFragment(titles[0]));
    mFragmentList.add(new TabFragment(titles[1]));
    mFragmentList.add(new TabFragment(titles[2]));
    mFragmentList.add(new TabFragment(titles[3]));
    ViewPager viewPager = findViewById(R.id.view_pager);
    FragmentStatePagerAdapter adapter = new FragmentStatePagerAdapter(getSupportFragmentManager()) {
        @Override
        public Fragment getItem(int position) {
            return mFragmentList.get(position);
        }

        @Override
        public int getCount() {
            return mFragmentList.size();
        }
    };
    viewPager.setAdapter(adapter);
    TabLayout tabLayout = findViewById(R.id.tabLayout);
    tabLayout.setupWithViewPager(viewPager);
    tabFlashyAnimator = new TabFlashyAnimator(tabLayout);
    tabFlashyAnimator.addTabItem(titles[0], R.drawable.ic_events);
    tabFlashyAnimator.addTabItem(titles[1], R.drawable.ic_highlights);
    tabFlashyAnimator.addTabItem(titles[2], R.drawable.ic_search);
    tabFlashyAnimator.addTabItem(titles[3], R.drawable.ic_settings, R.color.colorAccent, getResources().getDimension(R.dimen.big_text));
    tabFlashyAnimator.highLightTab(0);
    viewPager.addOnPageChangeListener(tabFlashyAnimator);
    Handler handler = new Handler();
    handler.postDelayed(new Runnable() {
        @Override
        public void run() {
            tabFlashyAnimator.setBadge(1, 2);
        }
    }, 1000);
    handler.postDelayed(new Runnable() {
        @Override
        public void run() {
            tabFlashyAnimator.setBadge(20, 2);
        }
    }, 2000);
    handler.postDelayed(new Runnable() {
        @Override
        public void run() {
            tabFlashyAnimator.setBadge(200, 2);
        }
    }, 3000);
}
 

@Override
protected void onCreate(Bundle savedInstanceState) {
	super.onCreate(savedInstanceState);
	setContentView(R.layout.activity_main);

	Toolbar toolbar = findViewById(R.id.toolbar);
	setSupportActionBar(toolbar);

	// Create the adapter that will return a fragment for each of the three
	// primary sections of the activity.
	SectionsPagerAdapter mSectionsPagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager());

	// Set up the ViewPager with the sections adapter.
	ViewPager mViewPager = findViewById(R.id.container);
	mViewPager.setAdapter(mSectionsPagerAdapter);

	TabLayout tabLayout = findViewById(R.id.tabs);
	tabLayout.setupWithViewPager(mViewPager);

	mViewPager.addOnPageChangeListener(onPageChangeListener);

	fabAdd = findViewById(R.id.fab);
	fabAdd.setOnClickListener(new View.OnClickListener() {
		@Override
		public void onClick(View view) {
			Intent intent = new Intent(MainActivity.this, KeyEditActivity.class);
			startActivityForResult(intent, KEY_EDIT_REQUEST);
		}
	});

	// attempt extraction in activity, to make service start faster
	StunnelProcessManager.checkAndExtract(this);
	StunnelProcessManager.setupConfig(this);

	// Create the NotificationChannel, but only on API 26+ because
	// the NotificationChannel class is new and not in the support library
	if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
		CharSequence name = getString(R.string.notification_channel);
		String description = getString(R.string.notification_desc);
		int importance = NotificationManager.IMPORTANCE_DEFAULT;
		NotificationChannel channel = new NotificationChannel(CHANNEL_ID, name, importance);
		channel.setDescription(description);
		// Register the channel with the system; you can't change the importance
		// or other notification behaviors after this
		NotificationManager notificationManager = getSystemService(NotificationManager.class);
		if (notificationManager != null) {
			notificationManager.createNotificationChannel(channel);
		}
	}
}
 

@Override
protected void onCreate(Bundle savedInstanceState) {
	super.onCreate(savedInstanceState);
	setContentView(R.layout.activity_actionbar);

	//turn on up button
	getSupportActionBar().setDisplayHomeAsUpEnabled(true);

	
	FragmentManager fragmentManager = getSupportFragmentManager();
	if (savedInstanceState != null) {
		one = (PageFragment) fragmentManager.getFragment(savedInstanceState, "ONE");
		two = (PageFragment) fragmentManager.getFragment(savedInstanceState, "TWO");
		three = (PageFragment) fragmentManager.getFragment(savedInstanceState, "THREE");
		four = (PageFragment) fragmentManager.getFragment(savedInstanceState, "FOUR");
		five = (PageFragment) fragmentManager.getFragment(savedInstanceState, "FIVE");
		//since survived, need to clean up or I can't add them to the pagers adapter again.
		FragmentTransaction remove = fragmentManager.beginTransaction();
		remove.remove(one);
		remove.remove(two);
		remove.remove(three);
		remove.remove(four);
		remove.remove(five);
		if (!remove.isEmpty()) {
			remove.commit();
			fragmentManager.executePendingTransactions();
		}
	} else {
		one = PageFragment.create(1);
		two = PageFragment.create(2);
		three = PageFragment.create(3);
		four = PageFragment.create(4);
		five = PageFragment.create(5);
	}

	viewPager = (ViewPager) findViewById(R.id.pager);
	mPagerAdapter = new myFragmentPagerAdapter(5);
	viewPager.setAdapter(mPagerAdapter);
	//viewPager.setCurrentItem(2);
	//we need to know when a page has changed, so we can change/fix the next/previous/finish buttons
	viewPager.addOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() {
		@Override
		public void onPageSelected(int position) {
			supportInvalidateOptionsMenu();
		}
	});
}
 

@SuppressWarnings("PMD.CyclomaticComplexity") public EmojiView(final Context context,
    final OnEmojiClickListener onEmojiClickListener,
    final OnEmojiLongClickListener onEmojiLongClickListener, @NonNull final EmojiPopup.Builder builder) {
  super(context);

  View.inflate(context, R.layout.emoji_view, this);

  setOrientation(VERTICAL);
  setBackgroundColor(builder.backgroundColor != 0 ? builder.backgroundColor : Utils.resolveColor(context, R.attr.emojiBackground, R.color.emoji_background));
  themeIconColor = builder.iconColor != 0 ? builder.iconColor : Utils.resolveColor(context, R.attr.emojiIcons, R.color.emoji_icons);

  final TypedValue value = new TypedValue();
  context.getTheme().resolveAttribute(R.attr.colorAccent, value, true);
  themeAccentColor = builder.selectedIconColor != 0 ? builder.selectedIconColor : value.data;

  final ViewPager emojisPager = findViewById(R.id.emojiViewPager);
  final View emojiDivider = findViewById(R.id.emojiViewDivider);
  emojiDivider.setBackgroundColor(builder.dividerColor != 0 ? builder.dividerColor : Utils.resolveColor(context, R.attr.emojiDivider, R.color.emoji_divider));

  if (builder.pageTransformer != null) {
    emojisPager.setPageTransformer(true, builder.pageTransformer);
  }

  final LinearLayout emojisTab = findViewById(R.id.emojiViewTab);
  emojisPager.addOnPageChangeListener(this);

  final EmojiCategory[] categories = EmojiManager.getInstance().getCategories();

  emojiTabs = new ImageButton[categories.length + 2];
  emojiTabs[0] = inflateButton(context, R.drawable.emoji_recent, R.string.emoji_category_recent, emojisTab);
  for (int i = 0; i < categories.length; i++) {
    emojiTabs[i + 1] = inflateButton(context, categories[i].getIcon(), categories[i].getCategoryName(), emojisTab);
  }
  emojiTabs[emojiTabs.length - 1] = inflateButton(context, R.drawable.emoji_backspace, R.string.emoji_backspace, emojisTab);

  handleOnClicks(emojisPager);

  emojiPagerAdapter = new EmojiPagerAdapter(onEmojiClickListener, onEmojiLongClickListener, builder.recentEmoji, builder.variantEmoji);
  emojisPager.setAdapter(emojiPagerAdapter);

  final int startIndex = emojiPagerAdapter.numberOfRecentEmojis() > 0 ? 0 : 1;
  emojisPager.setCurrentItem(startIndex);
  onPageSelected(startIndex);
}