Layout separately and included here for better readability. Let's see the skeleton of the activity_main.xml and then later add the required element code. ![]() This positioning is very important to get parallax to work properly. Whatever element was added in the last, those elements will be placed at the top. Collapsing toolbar layout is like a FrameLayout. Firstly we need to have a collapsing toolbar layout which we can add to the main activity XML. Here, we will be creating an app to display a list of books with a parallax scrolling effect. Implementation 'androidx.recyclerview:recyclerview:1.1.0' Implementation "ordinatorlayout:coordinatorlayout:1.1.0" We will look into the same type of parallax example in this blog. Some designs include a parallax scroll effect with a header image, along with Tabs. Parallax in Android will come under material design scroll animations. Most of the gaming applications use this effect to give an effect of objects moving back with only one object in focus. Parallax scrolling can be a really interesting technique to use to give parts of your app a bit more life and character. It's a technique in computer graphics and web design, where background images move by the camera slower than foreground images, creating an illusion of depth in a 2D scene and adding to the immersion. Yes, this technique has been derived from the Mathematical principle itself. Parallax sounds like a mathematical word. Implementing the Parallax effect in Android App Let’s understand what this is about and also an app sample to know how to use it. To provide users with a good experience, many effects are available in the UI/UX space. An app with a good user experience will have good user ratings and popularity. Additionally, it’s background color will change depending on it’s position in the ViewPager.In recent times, every application in Android is giving more importance to user experience. For the sake of displaying some content, the Fragment will display a RecyclerView. Let’s start by creating a dummy Fragment. In case you forgot, the Tabs need a ViewPager to work with, so let’s take care of that in our Activity.java. Ensures the TabLayout sticks to the bottom of the header. Otherwise when you start scrolling, the Toolbar scrolls off screen.ĥ6. Makes sure the Toolbar consistently is pinned to the top. Telling our Toolbar to have a bottom margin of the same, avoids the overlap issue I showed you above.Ĥ9. TabLayout by default has a height of 48dp. So this attribute ensures the Toolbar stays on top.Ĥ8. Remember that CollapsingToolbarLayout is an extension of FrameLayout. The flag that triggers the parallax effect upon scrolling.ģ6 – 41 Scrim that makes Tab text more readable against the busy header background.Ĥ7. We don’t want the Toolbar title to collapse. This is not the Flexible Space with Image pattern. ![]() ![]() The total height that we want our collapsible header View to have.Ģ5. Some of the attributes here make the parallax scroll work. So now that you have an idea of the layout structure, behold the full XML layout code! Whatever element you place last, is what appears on the top. This positioning is important to get the parallax scrolling to work. So take note of the ordering of elements inside. The CollapsingToolbarLayout is like a super FrameLayout. So before I straight away paste the entire code here, let’s look at the layout skeleton. Here is the layout. So clearly, the plug and play doesn’t work. Unlike the typical Material Design Tabs attached to the Toolbar, Tabs here are transparent.
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