Java Code Examples for com.google.android.material.appbar.AppBarLayout#addOnOffsetChangedListener()

The following examples show how to use com.google.android.material.appbar.AppBarLayout#addOnOffsetChangedListener() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.

Example 1

Source File: AppBarStateChangeListener.java From GSYVideoPlayer with Apache License 2.0

6 votes

@Override
public final void onOffsetChanged(AppBarLayout appBarLayout, int i) {
    if (i == 0) {
        if (mCurrentState != State.EXPANDED) {
            onStateChanged(appBarLayout, State.EXPANDED);
        }
        mCurrentState = State.EXPANDED;
    } else if (Math.abs(i) >= appBarLayout.getTotalScrollRange()) {
        if (mCurrentState != State.COLLAPSED) {
            onStateChanged(appBarLayout, State.COLLAPSED);
        }
        mCurrentState = State.COLLAPSED;
    } else {
        if (mCurrentState != State.IDLE) {
            onStateChanged(appBarLayout, State.IDLE);
        }
        mCurrentState = State.IDLE;
    }
    appBarLayout.addOnOffsetChangedListener(this);
}

Example 2

Source File: ScrollingActivity.java From GSYVideoPlayer with Apache License 2.0

6 votes

private void initView() {
    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
    detailPlayer = (LandLayoutVideo) findViewById(R.id.detail_player);
    root = (CoordinatorLayout) findViewById(R.id.root_layout);

    setSupportActionBar(toolbar);
    toolBarLayout = (CollapsingToolbarLayout) findViewById(R.id.toolbar_layout);
    toolBarLayout.setTitle(getTitle());

    fab = (FloatingActionButton) findViewById(R.id.fab);
    fab.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            detailPlayer.startPlayLogic();
            root.removeView(fab);
        }
    });

    appBar = (AppBarLayout) findViewById(R.id.app_bar);
    appBar.addOnOffsetChangedListener(appBarStateChangeListener);
}

Example 3

Source File: FlexibleSpaceExampleActivity.java From CoordinatorExamples with Apache License 2.0

6 votes

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

	mFab = findViewById(R.id.flexible_example_fab);

	Toolbar toolbar = (Toolbar) findViewById(R.id.flexible_example_toolbar);
	toolbar.setNavigationOnClickListener(new View.OnClickListener() {
		@Override public void onClick(View v) {
			onBackPressed();
		}
	});

	AppBarLayout appbar = (AppBarLayout) findViewById(R.id.flexible_example_appbar);
	appbar.addOnOffsetChangedListener(this);
}

Example 4

Source File: MaterialUpConceptActivity.java From CoordinatorExamples with Apache License 2.0

6 votes

@Override
public void onCreate(Bundle savedInstanceState) {
	super.onCreate(savedInstanceState);
	setContentView(R.layout.activity_material_up_concept);

	TabLayout tabLayout = (TabLayout) findViewById(R.id.materialup_tabs);
	ViewPager viewPager  = (ViewPager) findViewById(R.id.materialup_viewpager);
	AppBarLayout appbarLayout = (AppBarLayout) findViewById(R.id.materialup_appbar);
	mProfileImage = (ImageView) findViewById(R.id.materialup_profile_image);

	Toolbar toolbar = (Toolbar) findViewById(R.id.materialup_toolbar);
	toolbar.setNavigationOnClickListener(new View.OnClickListener() {
		@Override public void onClick(View v) {
			onBackPressed();
		}
	});

	appbarLayout.addOnOffsetChangedListener(this);
	mMaxScrollSize = appbarLayout.getTotalScrollRange();

	viewPager.setAdapter(new TabsAdapter(getSupportFragmentManager()));
	tabLayout.setupWithViewPager(viewPager);
}

Example 5

Source File: CollapsingToolbarLayoutActivity.java From Android-skin-support with MIT License

5 votes

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_collapsing_toolbar_layout);
    mIvPlaceholder = (ImageView) findViewById(R.id.main_iv_placeholder);
    mLlTitleContainer = (LinearLayout) findViewById(R.id.main_ll_title_container);
    mFlTitleContainer = (FrameLayout) findViewById(R.id.main_fl_title);
    mAblAppBar = (AppBarLayout) findViewById(R.id.main_abl_app_bar);
    mTvToolbarTitle = (TextView) findViewById(R.id.main_tv_toolbar_title);
    mTbToolbar = (Toolbar) findViewById(R.id.main_tb_toolbar);
    mTbToolbar.setTitle("");

    // AppBar的监听
    mAblAppBar.addOnOffsetChangedListener(new AppBarLayout.OnOffsetChangedListener() {
        @Override
        public void onOffsetChanged(AppBarLayout appBarLayout, int verticalOffset) {
            int maxScroll = appBarLayout.getTotalScrollRange();
            float percentage = (float) Math.abs(verticalOffset) / (float) maxScroll;
            handleAlphaOnTitle(percentage);
            handleToolbarTitleVisibility(percentage);
        }
    });

    findViewById(R.id.small_photo).setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            startActivity(new Intent(CollapsingToolbarLayoutActivity.this, SettingsActivity.class));
        }
    });

    initParallaxValues(); // 自动滑动效果
}

Example 6

Source File: AppBarSwipeRefreshLayout.java From materialistic with Apache License 2.0

5 votes

@Override
protected void onAttachedToWindow() {
    super.onAttachedToWindow();
    if (getContext() instanceof Activity) {
        mAppBar = (AppBarLayout) ((Activity) getContext()).findViewById(R.id.appbar);
        if (mAppBar != null) {
            mAppBar.addOnOffsetChangedListener(this);
        }
    }
}

Example 7

Source File: AppBarLayoutUtil.java From SmoothRefreshLayout with MIT License

4 votes

public AppBarLayoutUtil(View view) {
    if (view instanceof AppBarLayout) {
        mAppBarLayout = (AppBarLayout) view;
        mAppBarLayout.addOnOffsetChangedListener(mListener);
    }
}

Example 8

Source File: TransitionMusicAlbumDemoFragment.java From material-components-android with Apache License 2.0

4 votes

@Override
public void onViewCreated(@NonNull View view, @Nullable Bundle bundle) {
  View container = view.findViewById(R.id.container);
  Toolbar toolbar = view.findViewById(R.id.toolbar);
  AppBarLayout appBarLayout = view.findViewById(R.id.app_bar_layout);
  FloatingActionButton fab = view.findViewById(R.id.fab);
  ImageView albumImage = view.findViewById(R.id.album_image);
  TextView albumTitle = view.findViewById(R.id.album_title);
  TextView albumArtist = view.findViewById(R.id.album_artist);
  RecyclerView songRecyclerView = view.findViewById(R.id.song_recycler_view);

  long albumId = getArguments().getLong(ALBUM_ID_KEY, 0L);
  Album album = MusicData.getAlbumById(albumId);

  // Set the transition name which matches the list/grid item to be transitioned from for
  // the shared element transition.
  ViewCompat.setTransitionName(container, album.title);

  appBarLayout.addOnOffsetChangedListener(
      (appBarLayout1, verticalOffset) -> {
        float verticalOffsetPercentage =
            (float) Math.abs(verticalOffset) / (float) appBarLayout1.getTotalScrollRange();
        if (verticalOffsetPercentage > 0.2F && fab.isOrWillBeShown()) {
          fab.hide();
        } else if (verticalOffsetPercentage <= 0.2F && fab.isOrWillBeHidden()) {
          fab.show();
        }
      });

  // Set up toolbar
  ViewCompat.setElevation(toolbar, 0F);
  toolbar.setNavigationOnClickListener(v -> getActivity().onBackPressed());

  // Set up album info area
  albumImage.setImageResource(album.cover);
  albumTitle.setText(album.title);
  albumArtist.setText(album.artist);

  // Set up track list
  songRecyclerView.setLayoutManager(new LinearLayoutManager(requireContext()));
  TrackAdapter adapter = new TrackAdapter();
  songRecyclerView.setAdapter(adapter);
  adapter.submitList(album.tracks);
}

Example 9

Source File: LibraryFragment.java From Jockey with Apache License 2.0

4 votes

@Nullable
@Override
public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container,
                         @Nullable Bundle savedInstanceState) {

    mBinding = FragmentLibraryBinding.inflate(inflater, container, false);
    mViewModel = new LibraryViewModel(getContext(), getFragmentManager(), mPrefStore, mThemeStore);
    mBinding.setViewModel(mViewModel);

    if (savedInstanceState != null) {
        mViewModel.setPage(savedInstanceState.getInt(KEY_SAVED_PAGE, mViewModel.getPage()));
    }

    Observable.combineLatest(mMusicStore.isLoading(), mPlaylistStore.isLoading(),
            (musicLoading, playlistLoading) -> {
                return musicLoading || playlistLoading;
            })
            .compose(bindToLifecycle())
            .subscribe(mViewModel::setLibraryRefreshing, throwable -> {
                Timber.e(throwable, "Failed to update refresh indicator");
            });

    mMusicStore.loadAll();
    mPlaylistStore.loadPlaylists();

    ViewPager pager = mBinding.libraryPager;
    AppBarLayout appBarLayout = mBinding.libraryAppBarLayout;

    appBarLayout.addOnOffsetChangedListener((layout, verticalOffset) ->
            pager.setPadding(pager.getPaddingLeft(),
                    pager.getPaddingTop(),
                    pager.getPaddingRight(),
                    layout.getTotalScrollRange() + verticalOffset));

    mBinding.libraryTabs.setupWithViewPager(mBinding.libraryPager);

    setupToolbar(mBinding.toolbar);
    setHasOptionsMenu(true);

    return mBinding.getRoot();
}

Example 10

Source File: ViewTaskFragment.java From opentasks with Apache License 2.0

4 votes

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
    mShowFloatingActionButton = !getResources().getBoolean(R.bool.has_two_panes);

    mRootView = inflater.inflate(R.layout.fragment_task_view_detail, container, false);
    mContent = (ViewGroup) mRootView.findViewById(R.id.content);
    mDetailView = (TaskView) inflater.inflate(R.layout.task_view, mContent, false);
    mContent.addView(mDetailView);
    mAppBar = (AppBarLayout) mRootView.findViewById(R.id.appbar);
    mToolBar = (Toolbar) mRootView.findViewById(R.id.toolbar);
    mToolBar.setOnMenuItemClickListener(this);
    mToolBar.setTitle("");
    mAppBar.addOnOffsetChangedListener(this);

    animate(mToolBar.findViewById(R.id.toolbar_title), 0, View.INVISIBLE);

    mFloatingActionButton = (FloatingActionButton) mRootView.findViewById(R.id.floating_action_button);
    showFloatingActionButton(false);
    mFloatingActionButton.setOnClickListener(v -> completeTask());

    // Update the toolbar color until the actual is loaded for the task

    mListColor = new ValueColor(getArguments().getInt(ARG_STARTING_COLOR)).argb();
    updateColor();

    mRestored = savedInstanceState != null;

    if (savedInstanceState != null)
    {
        if (mContent != null && mContentSet != null)
        {
            // register for content updates
            mContentSet.addOnChangeListener(this, null, true);

            // register observer
            if (mTaskUri != null)
            {
                mAppContext.getContentResolver().registerContentObserver(mTaskUri, false, mObserver);
            }
        }
    }
    else if (mTaskUri != null)
    {
        Uri uri = mTaskUri;
        // pretend we didn't load anything yet
        mTaskUri = null;
        loadUri(uri);
    }

    return mRootView;
}