android-constraintlayout

问题 Here's the code inner file activity_main.xml: <?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"> <Button android:id="@+id/button" android:layout_width="0dp" android:layout_height="wrap_content" android:text="start" app:layout_constraintEnd_toEndOf="parent" app:layout

问题 Here's the code inner file activity_main.xml: <?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"> <Button android:id="@+id/button" android:layout_width="0dp" android:layout_height="wrap_content" android:text="start" app:layout_constraintEnd_toEndOf="parent" app:layout

问题 <android.support.v4.widget.NestedScrollView 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="wrap_content" android:fillViewport="true"> <android.support.constraint.ConstraintLayout android:layout_width="match_parent" android:layout_height="wrap_content"> ///Content </android.support.constraint.ConstraintLayout> </android

问题 Each time my app crashes because it can't find Landroidx/constraintlayout/widget/R$styleable in classpath. I tried to rebuild, invalidate cache but it always gives me the same error in runtime. I tried both versions 1.1.2 and 1.1.3. And interesting: when using 1.1.3 androidX Jetifier just forces using 1.1.2 as you can see from gradle report Caused by: android.view.InflateException: Binary XML file line #2: Binary XML file line #2: Error inflating class androidx.constraintlayout.widget

问题 I have a progress bar that shows up when I click on the Login button. I made modifications to the layout by adding a Toolbar at the top and it seems this toolbar is now obscuring the progressbar. How can I make this progress bar visible somewhere in the center of the screen? Thank you very much for your help. The layout xml code is as shown below: activity_login.xml <android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http:/

问题 I have this layout of my login activity. I want to overlay progressBar as like it can be done using FrameLayout . How to do this using ConstraintLayout ? <layout> <data> <variable name="vm" type="com.app.android.login.vm" /> </data> <ScrollView 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:fillViewport=

问题 When app:layout_constraintHeight_percent is 0.50 or 0.80 it works fine, but when I set it to 0.99 , the Button go very long and larger than 99% of screen ? <ScrollView xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" xmlns:app="http://schemas.android.com/apk/res-auto" android:fillViewport="true" android:orientation="vertical"> <android.support.constraint.ConstraintLayout android:orientation="vertical" android

问题 I have three elements in layout, two TextViews and one ImageView between them. I'm trying to achieve this behavior: image (arrow) has 9patch image is wide as possible image has set minimal width right and left texts go wider with longer text but only to meet image's minWidth, then new line appears Below are few screenshots from Android Studio layout preview, gained with different layouts. What I have tried: Relative layout: image centered, minWidth set, texts have set toRightOf/toLeftOf

问题 Here my xml layout file: <?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.support.v4.widget.DrawerLayout android:layout_width="0dp" android:layout_height="wrap_content" app:layout_constraintBottom_toBottomOf="parent" app

问题 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