android-constraintlayout

问题 I'm little confused about ConstraintLayout in Android. I was learning about it and first thing I get confused about it why android use separate xml namespace for it? xmlns:app="http://schemas.android.com/apk/res-auto" ConstraintLayout is part of Layout then why google didn't added it in the old namespace? xmlns:android="http://schemas.android.com/apk/res/android" and why android required to write full qualified name in XML? android.support.constraint.ConstraintLayout why not just

问题 I am trying to build a simple layout with three views using ConstrainLayout: When the text in the left view is very long, I want to see this: But what I get instead is this - the left view growth too much to the right and hides middle view. Here is my code: <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

问题 I am trying to build a simple layout with three views using ConstrainLayout: When the text in the left view is very long, I want to see this: But what I get instead is this - the left view growth too much to the right and hides middle view. Here is my code: <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

问题 I am using alpha4 implementation 'androidx.constraintlayout:constraintlayout:2.0.0-alpha4' of constraint layout. First I created a single layout and do onswipe animation it is working perfectly with motion layout then I patched the layout with a recyclerview. Now problem comes into picture Issue: If I am doing onswipe in a particular item of rv then it's getting lagged. Suppose I am doing swipe on the 1st item of the rv now after full swipe you will find that same swiped has already happen

问题 In an android application I am attempting to programmatically add customized ConstraintLayout views to a vertically oriented LinearLayout . I set the LayoutParams to MATCH_PARENT for width and WRAP_CONTENT for height in the ConstraintLayout s. However, when I run the application the ConstraintView is all scrunched up and the content is overlapping. Below are some relevant snippets and a screenshot of my application. How do I go about correcting this issue? public class ItemView extends

问题 I have a listview inside my ConstraintLayout and I read its supposed to automatically be scrollable, but the list just gets cut-off at the bottom with more items left to be displayed and its not scrollable, I dont know if Im setting some atribute wrong or if I have to add something for listview to scroll?? Here is my code <?xml version="1.0" encoding="utf-8"?> <android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas

问题 I have two views - A and B. They have different heights. How to vertically align the centers of these views inside ConstraintLayout ? For example, in the XML below, I would like the center of img_change_picture to be aligned with the center of txt_change_picture . <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

问题 I have two views - A and B. They have different heights. How to vertically align the centers of these views inside ConstraintLayout ? For example, in the XML below, I would like the center of img_change_picture to be aligned with the center of txt_change_picture . <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

问题 I have added 3 buttons in a ConstraintLayout. I have added a button to disable or enable these buttons. If I was using normal LinearLayout. I could have put all the buttons in a Linear Layout and enable or disable that particular layout. But I am using ConstraintLayout. So I need to disable or enable all of these buttons, I believe that there must be a way in ConstraintLayout to group different views. Kindly guide me how to group views in ConstriantLayout <Button android:text="Button" android

问题 I have a fragment that replaces FrameLayout. In this fragment, if I had only RecyclerView, I could set its height to match_parent and everything could work well. However, if I have multiple elements that need to be over the top of RecyclerView, the RecyclerView cannot be fit into the screen. Code for the first scenario: <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools=