- // Get the current layout parameters. Using coordinator layout parameters allows the `setBehavior()` command and using app bar layout parameters allows the `setScrollFlags()` command.
- CoordinatorLayout.LayoutParams swipeRefreshLayoutParams = (CoordinatorLayout.LayoutParams) swipeRefreshLayout.getLayoutParams();
- AppBarLayout.LayoutParams toolbarLayoutParams = (AppBarLayout.LayoutParams) toolbar.getLayoutParams();
- AppBarLayout.LayoutParams findOnPageLayoutParams = (AppBarLayout.LayoutParams) findOnPageLinearLayout.getLayoutParams();
- AppBarLayout.LayoutParams tabsLayoutParams = (AppBarLayout.LayoutParams) tabsLinearLayout.getLayoutParams();
-
- // Add the scrolling behavior to the layout parameters.
- if (scrollAppBar) {
- // Enable scrolling of the app bar.
- swipeRefreshLayoutParams.setBehavior(new AppBarLayout.ScrollingViewBehavior());
- toolbarLayoutParams.setScrollFlags(AppBarLayout.LayoutParams.SCROLL_FLAG_SCROLL | AppBarLayout.LayoutParams.SCROLL_FLAG_ENTER_ALWAYS | AppBarLayout.LayoutParams.SCROLL_FLAG_SNAP);
- findOnPageLayoutParams.setScrollFlags(AppBarLayout.LayoutParams.SCROLL_FLAG_SCROLL | AppBarLayout.LayoutParams.SCROLL_FLAG_ENTER_ALWAYS | AppBarLayout.LayoutParams.SCROLL_FLAG_SNAP);
- tabsLayoutParams.setScrollFlags(AppBarLayout.LayoutParams.SCROLL_FLAG_SCROLL | AppBarLayout.LayoutParams.SCROLL_FLAG_ENTER_ALWAYS | AppBarLayout.LayoutParams.SCROLL_FLAG_SNAP);
- } else {
- // Disable scrolling of the app bar.
- swipeRefreshLayoutParams.setBehavior(null);
- toolbarLayoutParams.setScrollFlags(0);
- findOnPageLayoutParams.setScrollFlags(0);
- tabsLayoutParams.setScrollFlags(0);
-
- // Expand the app bar if it is currently collapsed.
- appBarLayout.setExpanded(true);
- }
-
- // Apply the modified layout parameters.
- swipeRefreshLayout.setLayoutParams(swipeRefreshLayoutParams);
- toolbar.setLayoutParams(toolbarLayoutParams);
- findOnPageLinearLayout.setLayoutParams(findOnPageLayoutParams);
- tabsLinearLayout.setLayoutParams(tabsLayoutParams);
+ // Adjust the layout and scrolling parameters if the app bar is at the top of the screen.
+ if (!bottomAppBar) {
+ // Get the current layout parameters. Using coordinator layout parameters allows the `setBehavior()` command and using app bar layout parameters allows the `setScrollFlags()` command.
+ CoordinatorLayout.LayoutParams swipeRefreshLayoutParams = (CoordinatorLayout.LayoutParams) swipeRefreshLayout.getLayoutParams();
+ AppBarLayout.LayoutParams toolbarLayoutParams = (AppBarLayout.LayoutParams) toolbar.getLayoutParams();
+ AppBarLayout.LayoutParams findOnPageLayoutParams = (AppBarLayout.LayoutParams) findOnPageLinearLayout.getLayoutParams();
+ AppBarLayout.LayoutParams tabsLayoutParams = (AppBarLayout.LayoutParams) tabsLinearLayout.getLayoutParams();
+
+ // Add the scrolling behavior to the layout parameters.
+ if (scrollAppBar) {
+ // Enable scrolling of the app bar.
+ swipeRefreshLayoutParams.setBehavior(new AppBarLayout.ScrollingViewBehavior());
+ toolbarLayoutParams.setScrollFlags(AppBarLayout.LayoutParams.SCROLL_FLAG_SCROLL | AppBarLayout.LayoutParams.SCROLL_FLAG_ENTER_ALWAYS | AppBarLayout.LayoutParams.SCROLL_FLAG_SNAP);
+ findOnPageLayoutParams.setScrollFlags(AppBarLayout.LayoutParams.SCROLL_FLAG_SCROLL | AppBarLayout.LayoutParams.SCROLL_FLAG_ENTER_ALWAYS | AppBarLayout.LayoutParams.SCROLL_FLAG_SNAP);
+ tabsLayoutParams.setScrollFlags(AppBarLayout.LayoutParams.SCROLL_FLAG_SCROLL | AppBarLayout.LayoutParams.SCROLL_FLAG_ENTER_ALWAYS | AppBarLayout.LayoutParams.SCROLL_FLAG_SNAP);
+ } else {
+ // Disable scrolling of the app bar.
+ swipeRefreshLayoutParams.setBehavior(null);
+ toolbarLayoutParams.setScrollFlags(0);
+ findOnPageLayoutParams.setScrollFlags(0);
+ tabsLayoutParams.setScrollFlags(0);
+
+ // Expand the app bar if it is currently collapsed.
+ appBarLayout.setExpanded(true);
+ }