android-constraintlayout

I want to add some views to a ConstraintLayout in java. This is the layout xml: <?xml version="1.0" encoding="utf-8"?> <android.support.constraint.ConstraintLayout xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:id="@+id/constraint_layout" xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent"> </android.support.constraint.ConstraintLayout> and this is the code of the activity: public class MainActivity extends AppCompatActivity { private ConstraintLayout

I have a constraint layout (alpha9) with views spread all over it, and I have one particular ImageView that I need to replicate and add more of like it. The layout is like so : The main purpose is to animate 5 of those "coin" imageViews when the button is pressed. The imageViews i need to generated sha'll have exact properties of the the imageView behind the Button down below (with same constraints) What i tried to do is the following : private ImageView generateCoin() { ImageView coin = new ImageView(this); constraintLayout.addView(coin,-1,originCoinImage.getLayoutParams());//originCoinImage

I'm using the new Constraint layout to build my layout. I need to have Button that occupies almost the entire screen width and that was easy using constraints. As you can see in the image I am setting the width to 0dp (Any size), but the text don't stick at the center what's usually the normal for a button text. I've tried: - set gravity to center - set textAlignment to center Looks like this properties can't work with 0dp width (Any size). So I've tried to set the width to match_parent using gravity center. It's a little bit to the right. Does any one know how to fix that behavior ? Note that

I find that there is a quick way to create animation with ConstraintSet for ConstrainLayout Activity. Faster than use TransitionManager for RelativeLayout ConstraintSet use two xml file for an Activity. One for the first position and next one for the destination. I want to create something like this: https://media.giphy.com/media/2UwXdWEoLWe9iQMFIY/giphy.gif But there is no clearly instruction show how to use it in Java. Anyone had done this can show me the source code or link to some post like that. Thanks for reading the post. This is possible with ConstraintSet . They key is two have two

I am trying to add TextViews one below another at runtime in a Constraint Layout. But I always end up with just one textview and the rest hiding behind it. I tried several things including chaining the view, but nothing seems to work. private void method(int position) { ConstraintSet set = new ConstraintSet(); TextView textView = new TextView(getContext()); int textViewId = 100 + position; //previousTextViewId = textViewId; textView.setId(textViewId); ConstraintLayout.LayoutParams layoutParams = new ConstraintLayout.LayoutParams(0, WRAP_CONTENT); layoutParams.rightToRight = PARENT_ID;

If I use 1.0.2, the 3 images' width is average, and the height of them is computed by the radio which I set. If I use 1.1.0, the height of them is 0dp and I can't see nothing, unless I set android:layout_height="match_parent" in the root ConstraintLayout . Is it a bug? Here is my code: <android.support.constraint.ConstraintLayout android:layout_width="match_parent" android:layout_height="wrap_content"> <ImageView android:id="@+id/iv0" android:layout_width="0dp" android:layout_height="0dp" android:background="#FF0000" app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintRight