What is the use of coordinatorlayout?
CoordinatorLayout is a super-powered FrameLayout. CoordinatorLayout is intended for two primary use cases: As a top-level application decor or chrome layout. As a container for a specific interaction with one or more child views.
What is the difference between coordinatorlayout and framelayout?
If you have used a FrameLayout before, you should be very comfortable using CoordinatorLayout. If you haven’t used a FrameLayout, do not worry, it is pretty straightforward. By default, if you add multiple children to a FrameLayout, they would overlap each other. A FrameLayout should be used most often to hold a single child view.
How can I interact with the child views of a coordinatorlayout?
By specifying (CoordinatorLayout.Behavior Behaviors) for child views of a CoordinatorLayout you can provide many different interactions within a single parent and those views can also interact with one another.
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What is CoordinatorLayout used for?
CoordinatorLayout is a super-powered FrameLayout . CoordinatorLayout is intended for two primary use cases: As a top-level application decor or chrome layout. As a container for a specific interaction with one or more child views.
How do you use coordinate layout?
By using Coordinator layout you can easily handle and animate the transitions of views present in a Coordinator Layout....Implementing Scroll-Based BehaviorA CoordinatorLayout as the base layout.An AppBarLayout and a FAB as a child of the CoordinatorLayout.And finally, a CollapsingToolbarLayout as a child of AppBarLayout.
What is FrameLayout Android?
FrameLayout is designed to block out an area on the screen to display a single item. Generally, FrameLayout should be used to hold a single child view, because it can be difficult to organize child views in a way that's scalable to different screen sizes without the children overlapping each other.
What is collapsing Toolbar Android?
Android CollapsingToolbarLayout is a wrapper for Toolbar which implements a collapsing app bar. It is designed to be used as a direct child of a AppBarLayout. This type of layout is commonly seen in the Profile Screen of the Whatsapp Application.
Why we use coordinate layout in android?
Android CoordinatorLayout is a super-powered FrameLayout. It has a lot more to offer than it seems. It has additional level of control over it's child views. It coordinates the animations and transitions of child views with one another.
What is app bar layout?
AppBarLayout is a vertical LinearLayout which implements many of the features of material designs app bar concept, namely scrolling gestures. Children should provide their desired scrolling behavior through AppBarLayout.
What is Android RelativeLayout?
RelativeLayout is a view group that displays child views in relative positions. The position of each view can be specified as relative to sibling elements (such as to the left-of or below another view) or in positions relative to the parent RelativeLayout area (such as aligned to the bottom, left or center).
What is a ViewPager in Android?
Layout manager that allows the user to flip left and right through pages of data. You supply an implementation of a PagerAdapter to generate the pages that the view shows. ViewPager is most often used in conjunction with android.
What is a CardView?
CardView is a new widget in Android that can be used to display any sort of data by providing a rounded corner layout along with a specific elevation. CardView is the view that can display views on top of each other.
What is Toolbar Android?
In Android applications, Toolbar is a kind of ViewGroup that can be placed in the XML layouts of an activity. It was introduced by the Google Android team during the release of Android Lollipop(API 21). The Toolbar is basically the advanced successor of the ActionBar.
How do I know if my collapsed Toolbar is collapsing?
@Atieh to further explain it, when the collapsing toolbar is fully expanded the offset value is equal to zero (offset == 0) ... I changed the if condition to verticalOffset < -710 then the problem solved. ... To detect if fully collapsed check if Math.abs(offset) == appBarLayout.More items...•
How do I set a custom Toolbar on Android?
Add a Toolbar to an ActivityAdd the v7 appcompat support library to your project, as described in Support Library Setup.Make sure the activity extends AppCompatActivity : ... In the app manifest, set the
How do I find a location with coordinates?
Enter coordinates to find a placeOn your computer, open Google Maps.In the search box, enter your coordinates. Here are examples of formats that work: Decimal degrees (DD): 41.40338, 2.17403. Degrees, minutes, and seconds (DMS): 41°24'12.2"N 2°10'26.5"E. Degrees and decimal minutes (DMM): 41 24.2028, 2 10.4418.
How do you enter coordinates in Autocad?
To show the panel, click the View tab then, right-click to the side of the available panels and click Show Panels > Coordinates. The Coordinates panel will be displayed. To set the coordinate system to World from the Ribbon Home tab > UCS panel, click the World button.
What is a coordinator layout?
The CoordinatorLayout is a new layout, introduced with the Android Design Support Library. The CoordinatorLayout is a super-powered FrameLayout (according to the official documentation ). If you have used a FrameLayout before, you should be very comfortable using CoordinatorLayout. If you haven’t used a FrameLayout, do not worry, it is pretty straightforward.
What is the addition to the Activity class?
The only addition we make to the Activity class is to implement an OnClickListener on the Button, to show a Snackbar. We set the root View for the Snackbar to the CoordinatorLayout. This way, the CoordinatorLayout knows about the Snackbar and the FAB, and the transition animation is handled automatically, to make sure that both widgets do not overlap.
Does coordinatorlayout automatically do all this?
The CoordinatorLayout automatically does all this already. However, you might want to define your own reactions and behaviors, rather than use the default and standard behaviors. It is remarkably easy to do. The complexity lies in how unique a behavior you want, and not in implementing a behavior.
Can you add multiple children to a framelayout?
By default, if you add multiple children to a FrameLayout, they would overlap each other. A FrameLayout should be used most often to hold a single child view. The main appeal of the CoordinatorLayout is its ability to coordinate the animations and transitions of the views within it.
Is the coordinator layout a relative layout?
Unlike the previous example, this time the CoordinatorLayout is not the root layout. Rather, the root layout is a RelativeLayout, and the CoordinatorLayout is it’s only child. This is because we do not want the CoordinatorLayout’s children to slide out of view of the screen. Within the CoordinatorLayout, we have a NestedScrollView that contains a single LinearLayout. The LinearLayout, contains multiple CardViews.
What is coordinator layout?
The Coordinator Layout is described as a “ a super-powered FrameLayout” according to the docs. It is used to facilitate how views within your layout interact with each other. This is done by creating or assigning specific Behaviors to these views. These Behaviors are core to what makes Material Design unique, and include familiar interactions such as sliding drawers and panels to swipe-dismissable elements and buttons that stick to other elements as they move and animate.
What are behaviors in coordinator layouts?
Behaviors are at the core of CoordinatorLayouts. They represent interactions between 2 or more views in the same layout. They are normally categorized into the following:
What is a scroll based behavior?
When a RecyclerView and AppBar both exist in a CoordinatorLayout, when the RecyclerView scrolls, it will push the AppBar upwards a bit, and then minimize the AppBar , so as to continue scrolling seamlessly as shown in Figure 2 (on the left). Scroll-Based Behaviors involve a little more work to get them going and we shall not focus much on them for now.
What happens when a layout finds a dependency?
Once the layout has found a dependency, it shall begin observing that dependency. For instance, once the FloatingActionButton has identified that it depends on the BottomSheet, this method will listen for changes on the BottomSheet and inform the FloatingActionButton. Example code (EC-5) below shows this. Here is where the logic to handle the interaction goes.
Does the bottomsheet anchor itself to the appbarlayout?
As we can see, this method checks to see the type of views in the CoordinatorLayout, in our case an AppBarLayout and BottomSheet, for the AppBarLayout, it will anchor itself to it, and for the BottomSheet, it will hide itself or translate upwards depending on various conditions.
What is coordinator layout?
Coordinator Layout is used to manage the transactions and animation of various views present in an Activity. Before Coordinator Layout, Frame Layout was used, but using more than one views in Frame Layout results in overlapping of views over one another. At the end of the blog, we did some examples to have a clear understanding. Hope you enjoyed the blog.
What is layout based behavior?
Layout-Based: Layout-Based behaviors are used to shift one view to some other place when you perform a certain operation. For example, whenever you click on a Floating Action Button (FAB), then that FAB will be moved up and one Snackbar will come from the bottom of the screen. After a few seconds, the Snackbar will be gone and the FAB will come to its original place.
Can you use more than one framelayout?
Also, it is advised not to use more than one element in our FrameLayout. The reason behind this is, you have to explicitly handle the motions or you may say the animations of all the views that are present on a particular page of your mobile application.
Is scrollbasedactivity already created?
We have already created the ScrollBasedActivity, so let's use the same.
What is behavior in a layout?
Behaviors may be used to implement a variety of interactions and additional layout modifications ranging from sliding drawers and panels to swipe-dismissable elements and buttons that stick to other elements as they move and animate.
Does a coordinatorlayout have an anchor?
Children of a CoordinatorLayout may have an anchor . This view id must correspond to an arbitrary descendant of the CoordinatorLayout, but it may not be the anchored child itself or a descendant of the anchored child. This can be used to place floating views relative to other arbitrary content panes.
Can you specify behavior for child views of a coordinatorlayout?
View classes can specify a default behavior when used as a child of a CoordinatorLayout using the CoordinatorLayout.DefaultBehavior annotation.
What is coordinator layout?
CoordinatorLayout is a general-purpose container that allows for coordinating interactive behaviorsbetween its children. CoordinatorLayout manages interactions between its children, and as such needs to contain all the View s that interact with each other. The two general cases supported by CoordinatorLayout are:
What is app:layout_anchor?
app:layout_anchor: This attribute can be set on children of the CoordinatorLayout to attach them to another view. The value would be the id of an anchor view that this view should position relative to. Note that, the anchor view can be any child View (a child of a child of a child of a CoordinatorLayout, for example).
What is Android layout gravity?
android:layout_gravity: Specifies the gravity of the child relative to the parent. If you specify an Anchor using app:layout_anchor, then this attribute would be ignored. And you have to use app:layout_anchorGravity to position the child. Do not use both of these together in any view. It may cause of unexpected result.
What does app:layout_anchorgravity mean?
app:layout_anchorGravity: Specifies how an object should position relative to an anchor, on both the X and Y axes, within its parent’s bounds.
Can you specify behavior for child views of a coordinatorlayout?
By specifying Behaviors for child views of a CoordinatorLayout you can provide many different interactions within a single parent and those views can also interact with one another.
What Is Coordinator layout?
Behaviors in Android Application
- Whenever a view is interacting with the other then it is done with the help of Behaviors. We create a particular behavior for a particular view and these behaviors are responsible for animations between the views. Some of the common Material Design behaviors are sliding drawers, swipe-dismissal, floating action button, a sticky buttonthat stick on some other view. So, broadly these …
Project Setup
- Open Android Studio and create a project
- Activity: EmptyActivity
- Project Name: CoordinatorLayout-Example
- Language: Kotlin
Implementing Scroll-Based Behavior
- Scroll-Based behaviors are mostly used behaviors. Here we scroll one view to overlap on to the other view. So, here in this example, we will implement the same behavior as used in the WhatsApp application. We have already created the ScrollBasedActivity, so let's use the same. The layout of this file contains: 1. A CoordinatorLayout as the base layout 2. An AppBarLayout a…
Implementing Layout-Based Behavior
- Here in this activity, we will create a Floating Action Button and on clicking the FAB, a Snackbar will come from the bottom of the screen and it will be disappeared after a few seconds.So, here is what we will have in our Activity: 1. A CoordinatorLayout as our base layout 2. Inside the base layout, we will have an AppBarLayout, a floating action button, and some content for the page. H…
Conclusion
- In this blog, we learned how to use Coordinator Layout in our application. Coordinator Layout is used to manage the transactions and animation of various views present in an Activity. Before Coordinator Layout, Frame Layout was used, but using more than one views in Frame Layout results in overlapping of views over one another. At the end of the blog, we did some examples t…