As you may know Android material design is inspired from paper and ink concept. Individually die-cut cards or perforated 4-up in letter-size sheets. Also keep in mind this does not has an effect on API 21 and above as the clipping is automatically done.
On pre-Lollipop platforms, CardView does not clip the bounds of the Card for the rounded corners. Sets the padding between the Card's edges and the children of CardView. Depending on platform version or getUseCompatPadding settings, CardView may update these values before calling setPadding int, int, int, int. Updates the backward compatible maximum elevation of the CardView. Instead, it adds padding to content so that it won't overlap with the rounded corners.
You can disable this behavior by setting this field to false. Setting this value on Lollipop and above does not have any effect unless you have enabled compatibility padding. CardView adds additional padding to draw shadows on platforms before Lollipop. This may cause Cards to have different sizes between Lollipop and before Lollipop. If you need to align CardView with other Views, you may need api version specific dimension resources to account for the changes.
As an alternative, you can set this flag to true and CardView will add the same padding values on platforms Lollipop and after. Since setting this flag to true adds unnecessary gaps in the UI, default value is false. Content and code samples on this page are subject to the licenses described in the Content License.
Last updated April 17, Unfortunately this property, as of now is not supported on devices running API 20 or low. Instead when an image covering the full CardView is displayed on these devices, a padding is added to the image to prevent the overlapping corners. To make the edges overlap this property can be used. In this case you may need to use an image with round corners. Also keep in mind this does not has an effect on API 21 and above as the clipping is automatically done. Since when a card is displayed on screen, usually multiple views are added inside it.
Fortunately Android CardView supports this unique property, through which the padding for CardView content can be set once and for all. This property defines the elevation of CardView. As you may know this one of the core concepts of Android material design. According to the elevation defined, Android system dynamically shows the shadow of any material on screen. In this tutorial we would use a RecyclerView to show a list of CardViews. Since this tutorial is not about the working of Android RecyclerView, we would not be discussing the detailed working of RecyclerView.
If you wish to learn in detail about it, please refer to this RecyclerView tutorial. Next lets have a look at the main class where RecyclerView adapter is defined. As mentioned in the opening lines of this tutorial, recently an update to support v7 library was released.
This update deprecated an important method called getPosition. This method was used to return the position of view holder item. But now two new methods, getlayoutPosition and getadapterPosition are introduced instead of it. These methods return the position of layout in view holder and adapter position, respectively.
The later one gives the position basis on the items currently in the adapter. For better understanding, please have a look at the full source code below:.
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