For a RecyclerView to scroll, one of two things must be true: The RecyclerView has a smaller height than all of its items The RecyclerView is inside a scrolling parent ConstraintLayout is not a scrolling parent, so we have to make sure that the RecyclerView is “too small”, which will cause it to let the … Read more
Try this: <?xml version=”1.0″ encoding=”utf-8″?> <android.support.constraint.ConstraintLayout xmlns:android=”http://schemas.android.com/apk/res/android” xmlns:app=”http://schemas.android.com/apk/res-auto” xmlns:tools=”http://schemas.android.com/tools” android:layout_width=”match_parent” android:layout_height=”match_parent” android:orientation=”vertical” android:padding=”20dp”> <android.support.v7.widget.CardView android:id=”@+id/card_1″ android:layout_width=”0dp” android:layout_height=”200dp” android:layout_marginStart=”8dp” android:layout_marginEnd=”8dp” android:layout_marginTop=”8dp” app:layout_constraintStart_toStartOf=”parent” app:layout_constraintEnd_toEndOf=”parent” app:layout_constraintTop_toTopOf=”parent” /> <android.support.v7.widget.CardView android:id=”@+id/card_2″ android:layout_width=”100dp” android:layout_height=”100dp” android:layout_marginBottom=”8dp” android:layout_marginStart=”8dp” android:layout_marginEnd=”8dp” android:layout_marginTop=”0dp” app:cardBackgroundColor=”#69F” app:layout_constraintBottom_toBottomOf=”@+id/card_1″ app:layout_constraintStart_toStartOf=”@+id/card_1″ app:layout_constraintEnd_toEndOf=”@+id/card_1″ app:layout_constraintTop_toBottomOf=”@+id/card_1″ /> </android.support.constraint.ConstraintLayout> Explanation :- This works because of these four lines Following lines sets the blue CardView centered … Read more
I know it’s old but i think to do that without nesting, you have to change top component to something like this. android:layout_height=”wrap_content” android:layout_gravity=”center” <androidx.constraintlayout.widget.ConstraintLayout xmlns:android=”http://schemas.android.com/apk/res/android” android:layout_width=”match_parent” android:layout_height=”wrap_content” android:layout_gravity=”center” xmlns:tools=”http://schemas.android.com/tools” xmlns:app=”http://schemas.android.com/apk/res-auto”>
i had the same issue and i find this solution: you should add this attribute to your recyclerview and it makes your recyclerview wrap_content in the constraint_layout: app:layout_constraintHeight_default=”wrap” let me know if this solution fixed your problem. EDIT : recycler’s height should be 0dp. EDIT 2 : in the newer versions of support library, use … Read more
I was trying to figure this out too. I’ve discovered that one way to do it is to select both views, then right click and select Center Horizontally. This creates the chain, but then you have to adjust any other constraints accordingly. I’m new to Android, so I’m sure there will be other ways….
ConstraintLayout is not part of AppCompat. It’s a standalone library. Add the dependency in your build.gradle file implementation ‘com.android.support.constraint:constraint-layout:1.1.3’ and click Sync now.
I think what you’re looking for is matchConstraintMaxWidth attribute. If you add it to your SeekBar with a value of, say, 200dp, keeping left and right constraints to the parent and a width of 0dp, it will stretch the view’s width up to 200dp, but if there is more room it will stay at 200dp. … Read more
We can set a guideline using percentage by using the tag app:layout_constraintGuide_percent=”0.5″ where 0.5 (50%) being a float value between 0 to 1
In order to android:layout_marginBottom=”20dp” work well, you should use app:layout_constraintBottom_toBottomOf=”parent”
In XML Create a horizontal chain, and then use the app:layout_constraintHorizontal_weight attribute: <?xml version=”1.0″ encoding=”utf-8″?> <android.support.constraint.ConstraintLayout xmlns:android=”http://schemas.android.com/apk/res/android” xmlns:app=”http://schemas.android.com/apk/res-auto” android:layout_width=”match_parent” android:layout_height=”match_parent”> <TextView android:id=”@+id/one” android:layout_width=”0dp” android:layout_height=”48dp” android:background=”#caf” app:layout_constraintLeft_toLeftOf=”parent” app:layout_constraintRight_toLeftOf=”@+id/two” app:layout_constraintHorizontal_weight=”6″/> <TextView android:id=”@+id/two” android:layout_width=”0dp” android:layout_height=”48dp” android:background=”#fac” app:layout_constraintLeft_toRightOf=”@+id/one” app:layout_constraintRight_toRightOf=”parent” app:layout_constraintHorizontal_weight=”4″/> </android.support.constraint.ConstraintLayout> In Java Create your views and add them to the parent ConstraintLayout. You will need to give them … Read more