Today I present an Android horizontally scrolling view that snaps to child pages neatly and supports nested vertically scrolling child views.
ViewPager in Android API is a convenient component to switch screens. But if you would like to create your own component for this, it's not very hard.
This SnappingHorizontalScrollView properties:
- Swipe to next or previous screen like ViewPager.
- Containing OnScreenSwitchListener to handle event when pages is switched.
- Can add directly many child views to it.
- Can add a vertical ScrollView in each page to scroll vertically.
This is full source code (for more details, I commented in code):
And now, define a demo layout to use it! activity_main.xml:
In MainActivity, there are some important methods:
- Inflate layout from xml (item_layout.xml) and adding layouts to horizontal scroll view (inflateLayoutsToHorizontalView(ViewGroup layout) method).
- Set custom external font for TextView (setFontText() method).
Full MainActivity code:
This is item_layout.xml:
Result screens (click for full size):
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Final thoughts
In almost cases, ViewPager is better approach. If you want to experienced how to create a custom component, you can use it! :)