android-constraintlayout

问题 I'm using constraintLyout v 1.0.1. I would like to include in my xml a sub ConstraintLayout corresponding to a part of my global layout (which itself is a ConstraintLayout). I split the layout in two xmls in order to use this sub part elsewhere I tried this but I have no control on where to place my sub constraint layout in the parent. I wonder if I have to place everything in the same xml file or if their is a solution to use separate files. tmp_1.xml <android.support.constraint

问题 I'm using Android Studio 3.0 with the latest update on macOS recently the constraint layout editor stopped working. It's working when i run on the code on emulator/device but for the design and preview tabs it doesn't show up. I'm using constraint layout 1.0.2 i tried the other versions as well not working. i have tried support library 26, 26-beta1 and 26-beta2 no good there as well. 回答1: I have face same issue while i update my Android Studio . it's because of your support library latest

问题 I'm working with a android project and I used ConstraintLayout . I want to design the layout as two block will be stay in horizontal line . Both block will get 50% of width . I attach a screenshot for better understanding. Please let me know, how can I do this with ConstraintLayout. Thanks in advanced! 回答1: There are Two ways you can do this. Using Chain Constraint Using Guideline Constraint 1st : Using Chain Constraint <?xml version="1.0" encoding="utf-8"?> <android.support.constraint

问题 I am creating a layout .I want to set my custom toolbar (Which is another layout) to the top of layout and the FrameLayout just below the toolbar . But the FrameLayout should get rest of the layout 's height(match_parent).How to achieve this using constraint layout ? Thank you in advance. 回答1: Use 0dp that is match_contraint in ConstraintLayout. Like android:layout_height="0dp" 回答2: Solution: I'm assuming that you have your toolbar as another xml file, something like this: toolbar.xml

问题 Is there a way to have a layout with the 4 square buttons. The buttons should scale based on the width of the screen. I might have come across some ways of doing this dynamically in code, but is there a way to do it in the xml layout directly? I'm new to the new ConstraintLayout in Android, but if it is possible using that, I'd appreciate being pointed to in the right direction to try it out. Thanks. 回答1: Take a look on these <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android=

问题 I've seven buttons in a vertical chain using a landscape constraint layout. At run time I size my buttons so they fit between the appbar and navigation bar. I also position a horizontal guide (guide1) to begin at the bottom of the app bar and another one, guide2, at the top of the navbar. I've constrained the top button (1 or 7) to guide 1 and the bottom button (7 of 7) to guide2. During the same run time I'm able to pull the new width of the button by calling the following method. int

问题 What is the best way of supporting different screen sizes when using a constrainLayout? The problem: When I change the device to any device with a screen size of less than 4.7" the button at the bottom tends to go below the bottom edge of the screen. I have anchored the button and I thought that all the views will be shrunk to accommodate the rest. My code : <?xml version="1.0" encoding="utf-8"?> <android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res

问题 I have created a custom view and inserted logging for an estimated performance comparison public class CustomInAppKeyboard extends LinearLayoutCompat { private static final String TAG = "MyKeyboard"; @Override protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { super.onMeasure(widthMeasureSpec, heightMeasureSpec); if(BuildConfig.DEBUG){ Log.e("CustomInAppKeyboard", "w:" + widthMeasureSpec + " :: " + MeasureSpec.toString(widthMeasureSpec)); Log.e("CustomInAppKeyboard", "h:"

问题 In Constraint Layout, how to convert the xml attribute: app:layout_constrainedWidth=”true|false” in code? 回答1: If you want to set constrainedWidth/Height programatically, then you've to take ConstraintLayout.LayoutParams for your view and set the flag named constrainedWidth or constrainedHeight at your will. I.e. ConstraintLayout.LayoutParams lp = (ConstraintLayout.LayoutParams) myView.getLayoutParams(); // View for which we need to set constrainedWidth. lp.constrainedWidth = true/false;

问题 I just began learning Constraint Layout and it's pretty cool, I have come to topic ConstraintSet and got stuck. I have seen an example of ConstraintSet in developer documentation but I am not able to get the idea, I have implemented the code as it is and it's working but I am really unclear about the concept. How constraints work in different ConstraintSet is all I want to know about. Here is what i have done: activity_main.xml <?xml version="1.0" encoding="utf-8"?> <android.support