I have one TextView aligned to the left and centered vertically. Two groups of ImageView and TextView are both aligned to the right, with two layout configurations, one with image on the right, another with image on the left.
The hello world text can be very long. I want it to expand to fill the whole width without covering up the left text.
I have added app:layout_constraintStart_toEndOf="#id/text1" to constraint the right group (image + text) not to overlap with the left text. However, it does not behave as I expected.
How to make it not overlapping using only ConstraintLayout?
Text1 will be covered up if the right text is too long, which is not expected. Be noted that the image on the second row is gone too.
code:
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.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="wrap_content">
<androidx.appcompat.widget.AppCompatTextView
android:id="#+id/text1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:text="Text1" />
<androidx.appcompat.widget.AppCompatTextView
android:id="#+id/row1_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_constraintEnd_toStartOf="#id/row1_image"
app:layout_constraintHorizontal_bias="1"
app:layout_constraintHorizontal_chainStyle="packed"
app:layout_constraintStart_toEndOf="#id/text1"
app:layout_constraintTop_toTopOf="parent"
tools:text="Hello World" />
<androidx.appcompat.widget.AppCompatImageView
android:id="#+id/row1_image"
android:layout_width="22dp"
android:layout_height="22dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toEndOf="#id/row1_text"
app:layout_constraintTop_toTopOf="parent"
tools:src="#drawable/ic_confirm" />
<androidx.constraintlayout.widget.Barrier
android:id="#+id/horizontal_barrier"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:barrierDirection="bottom"
app:constraint_referenced_ids="row1_text,row1_image" />
<androidx.appcompat.widget.AppCompatImageView
android:id="#+id/row2_image"
android:layout_width="22dp"
android:layout_height="22dp"
app:layout_constraintEnd_toStartOf="#id/row2_text"
app:layout_constraintHorizontal_bias="1"
app:layout_constraintHorizontal_chainStyle="packed"
app:layout_constraintStart_toEndOf="#id/text1"
app:layout_constraintTop_toTopOf="#id/horizontal_barrier"
tools:src="#drawable/ic_confirm" />
<androidx.appcompat.widget.AppCompatTextView
android:id="#+id/row2_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toEndOf="#id/row2_image"
app:layout_constraintTop_toTopOf="#id/horizontal_barrier"
tools:text="Hello World" />
</androidx.constraintlayout.widget.ConstraintLayout>
expected to be like below if the right text is too long. It can achieved by LinearLayout and RelativeLayout
Kindly check the Constraintlayout version. Use app:layout_constrainedWidth="true"
with android:layout_width="wrap_content"
You can use Guidelines to stop your text from expanding more than needed.
let's take this layout for example:
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.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"
tools:context=".MainActivity">
<TextView
android:layout_width="0dp"
android:layout_height="match_parent"
android:gravity="center"
android:text="longgggggg texttttttttttttttttexttttttttttttttttexttttttttttttttttexttttttttttttttt"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="#+id/guideline2"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:id="#+id/textView"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:text="TextView"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toStartOf="#+id/guideline2"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<androidx.constraintlayout.widget.Guideline
android:id="#+id/guideline2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.18" />
And because of app:layout_constraintGuide_percent="0.18" and android:layout_width="0dp" on both text views the long textView will not exit its constraints.
I had a similar issue, the problem was that I was mixing left and start, so the view was constrained from Right to Left, but the left was set as constraintStartToParent.
Changing everything to start / end solved the issue.
Related
basically I have an layout as shown in the image. I am using a Guideline to restrict the width of the blue box. This means the ConstraintLayout itself hase full screen width and the blue box has its layout_constraintEnd_toStartOf="#id/guideline".
The blue box is just the background color of the TextView with the text, there aren't any additional containers or anything.
In order for the blue box to respect the constraints for its width calculations I have to set layout_constrainedWidth="true" on the box. As you can see the width is then restricted but the problem is that wrap_content does not work correctly afterwards.
The first box shows that if the text is only a single line, then the behaviour is as expected but if the text spans multiple lines (as in the second box) wrap_content breaks and the box is always "full width" (start of screen until the guideline).
Did somebody experience something similar? Is this a bug or did I misunderstood something. The same broken behaviour can be observed with the grey box on the right side.
I assume this has to do with the breaking behaviour of the TextView but is there a fix or workaround? As far as I know outside of an ConstraintLayout the width would be equal to the text so I assume this is a bug.
Edit XML code:
This is the basice code of one of the "bubbles" and as already mentioned I would like the view to really be as wide as the text.
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.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="wrap_content">
<TextView
android:id="#+id/text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#drawable/chat_message_history_receiver_background"
android:fontFamily="#font/nunito_semibold"
android:includeFontPadding="false"
android:paddingStart="15dp"
android:paddingTop="10dp"
android:paddingEnd="15dp"
android:paddingBottom="10dp"
android:textColor="#FFFFFF"
android:textSize="17sp"
app:layout_constrainedWidth="true"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toStartOf="#id/guideline"
app:layout_constraintStart_toEndOf="#id/profile_image"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintWidth_default="wrap"
app:layout_constraintWidth_max="wrap"
tools:text="Just testing something, somehowthisisnotworking" />
<app.jooy.messenger.ui.components.generic.profile_image.ProfileImage
android:id="#+id/profile_image"
android:layout_width="35dp"
android:layout_height="35dp"
android:layout_marginEnd="10dp"
app:layout_constraintHorizontal_chainStyle="packed"
app:layout_constraintHorizontal_bias="0"
app:layout_constraintVertical_bias="1"
app:backgroundColor="#color/colorPrimary"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toStartOf="#id/text"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<androidx.constraintlayout.widget.Guideline
android:id="#+id/guideline"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.85" />
</androidx.constraintlayout.widget.ConstraintLayout>
And here is the output of this particular xml code:
Try with this, adjust margin and padding as per your need. and change the android:layout_marginBottom of the guide as per your need.
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.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:paddingStart="10dp"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:id="#+id/text"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:background="#color/colorPrimaryDark"
android:includeFontPadding="false"
android:paddingStart="15dp"
android:paddingTop="10dp"
android:paddingEnd="15dp"
android:paddingBottom="10dp"
android:textColor="#FFFFFF"
android:textSize="17sp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/guide"
app:layout_constraintWidth_percent=".8"
tools:text="Just testing something, Some how this is not working" />
<app.jooy.messenger.ui.components.generic.profile_image.ProfileImage
android:id="#+id/profile_image"
android:layout_width="35dp"
android:layout_height="35dp"
android:layout_marginStart="5dp"
app:backgroundColor="#color/colorPrimary"
app:layout_constraintStart_toStartOf="#id/text"
app:layout_constraintTop_toTopOf="parent" />
<View
android:id="#+id/guide"
android:layout_width="0dp"
android:layout_height="0.2dp"
android:layout_marginBottom="10dp"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintBottom_toBottomOf="#id/profile_image"
app:layout_constraintVertical_bias="1"
app:layout_constraintTop_toTopOf="#id/profile_image" />
</androidx.constraintlayout.widget.ConstraintLayout>
I have two TextViews, one above the other. I would like the vertical middle of the two TextViews to be at the same position as the vertical middle of the ImageView. (This is so, regardless of the amount of text that may go into either TextView, everything will always look neat, vertically.)
I created what I need perfectly using two LinearLayouts (as the space above the title is the same as the space beneath the description):
But Android Studio was unable to covert it to ConstraintLayout successfully, as it just dumped the TextViews at the bottom of the layout. I've played with a lot of attributes, but could not quite arrive at the desired layout.
My question is similar to this one, except that I am trying to center_vertical align a pair of views rather than a single one - which means I have no view edge to align to the centre of the ImageView/container.
Is it possible to achieve what I'm after with ConstraintLayout? (I expect I may be able to do it with a single RelativeLayout, but I would like to use the layout_constraintDimensionRatio attribute on my ImageView which presumably leave me needing to use ConstraintLayout.)
In case it helps, here's the code for my aforementioned LinearLayout:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
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:orientation="horizontal">
<ImageView
android:id="#+id/imageView"
android:layout_width="#dimen/resources_list_image_size"
android:layout_height="#dimen/resources_list_image_size"
android:layout_marginEnd="#dimen/activity_horizontal_margin"
android:layout_marginRight="#dimen/activity_horizontal_margin"
android:layout_gravity="center_vertical"
android:contentDescription="#string/resource_image"
android:scaleType="centerCrop"/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:orientation="vertical">
<TextView
android:id="#+id/textViewTitle"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textAppearance="#style/MyTextAppearanceMedium"
tools:text="Title" />
<TextView
android:id="#+id/textViewDescription"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textAppearance="#style/MyTextAppearanceSmall"
tools:text="Description" />
</LinearLayout>
</LinearLayout>
Update: Solution
Thanks to Ben P's answer, this is my final code:
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.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="wrap_content">
<!-- Add guideline to align imageView to. -->
<androidx.constraintlayout.widget.Guideline
android:id="#+id/guideline"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.3" />
<ImageView
android:id="#+id/imageView"
android:layout_width="0dp"
android:layout_height="0dp"
android:contentDescription="#string/resource_image"
android:scaleType="centerCrop"
app:layout_constraintDimensionRatio="H,1:1"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintEnd_toStartOf="#id/guideline"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintBottom_toBottomOf="parent"/>
<TextView
android:id="#+id/textViewTitle"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginStart="#dimen/activity_horizontal_margin"
android:layout_marginLeft="#dimen/activity_horizontal_margin"
app:layout_constraintBottom_toTopOf="#id/textViewDescription"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toEndOf="#id/imageView"
app:layout_constraintTop_toTopOf="parent"
android:textAppearance="#style/MyTextAppearanceMedium"
app:fontFamily="#font/roboto_slab_regular"
app:layout_constraintVertical_chainStyle="packed"
tools:text="#string/enter_title_colon" />
<TextView
android:id="#+id/textViewDescription"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginStart="#dimen/activity_horizontal_margin"
android:layout_marginLeft="#dimen/activity_horizontal_margin"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toEndOf="#id/imageView"
app:layout_constraintTop_toBottomOf="#id/textViewTitle"
app:fontFamily="#font/roboto_slab_light"
android:textAppearance="#style/MyTextAppearanceSmall"
tools:text="Description" />
</androidx.constraintlayout.widget.ConstraintLayout>
It sounds like you could solve this problem by using a packed chain anchored to the top and bottom of the ImageView. You'll also need to use horizontal bias and a constrained width in order to get wrapping to work correctly.
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.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">
<View
android:id="#+id/anchor"
android:layout_width="80dp"
android:layout_height="80dp"
android:layout_margin="64dp"
android:background="#caf"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintTop_toTopOf="parent"/>
<TextView
android:id="#+id/one"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_constraintVertical_chainStyle="packed"
app:layout_constraintHorizontal_bias="0"
app:layout_constrainedWidth="true"
app:layout_constraintTop_toTopOf="#id/anchor"
app:layout_constraintStart_toEndOf="#id/anchor"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintBottom_toTopOf="#id/two"/>
<TextView
android:id="#+id/two"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_constraintHorizontal_bias="0"
app:layout_constrainedWidth="true"
app:layout_constraintTop_toBottomOf="#id/one"
app:layout_constraintStart_toEndOf="#id/anchor"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintBottom_toBottomOf="#id/anchor"/>
</androidx.constraintlayout.widget.ConstraintLayout>
The important attributes here are:
app:layout_constraintVertical_chainStyle="packed" on the first view, which causes the two textviews to stack right on top of each other
app:layout_constraintHorizontal_bias="0" on both views, which means that when the text is not long enough to reach the edge of the screen it will stick to the edge of the anchor view
app:layout_constrainedWidth="true" on both views, which prevents the textview from ever being wider than its constraints, and so the text wraps to a new line
If you want to use ConstraintLayout you could use something like this:
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.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">
<ImageView
android:id="#+id/imageView"
android:layout_width="200dp"
android:layout_height="200dp"
android:contentDescription="description"
android:scaleType="centerCrop"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<LinearLayout
android:id="#+id/linearLayout"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintBottom_toBottomOf="#+id/imageView"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toEndOf="#+id/imageView"
app:layout_constraintTop_toTopOf="#+id/imageView">
<TextView
android:id="#+id/textViewTitle"
android:layout_width="match_parent"
android:layout_height="wrap_content"
tools:text="Title" />
<TextView
android:id="#+id/textViewDescription"
android:layout_width="match_parent"
android:layout_height="wrap_content"
tools:text="Description" />
</LinearLayout>
</androidx.constraintlayout.widget.ConstraintLayout>
You can use this layout:
<?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">
<TextView
android:id="#+id/textView2"
android:layout_width="0dp"
android:layout_height="0dp"
android:background="#color/colorAccent"
android:text="I am 5% of the screen height"
app:layout_constraintBottom_toTopOf="#+id/textView3"
app:layout_constraintEnd_toEndOf="#+id/textView3"
app:layout_constraintHeight_percent="0.05"
app:layout_constraintHorizontal_bias="1.0"
app:layout_constraintStart_toStartOf="#+id/textView3"
app:layout_constraintTop_toTopOf="#+id/imageView2" />
<TextView
android:id="#+id/textView3"
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_constraintHeight_percent="0.15"
android:layout_marginStart="8dp"
android:layout_marginEnd="8dp"
android:background="#color/colorPrimary"
android:text="I am 15% of the screen height (And the image is 20% screen size in height) "
app:layout_constraintBottom_toBottomOf="#+id/imageView2"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toEndOf="#+id/imageView2"
app:layout_constraintTop_toBottomOf="#+id/textView2" />
<ImageView
android:id="#+id/imageView2"
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_constraintHeight_percent="0.20"
app:layout_constraintDimensionRatio="1:1"
android:scaleType="fitXY"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:srcCompat="#drawable/rose" />
</android.support.constraint.ConstraintLayout>
It will look like this:
One important thing about this layout:
You can control your aspect ratio (for the image) with app:layout_constraintDimensionRatio="x:y" and by passing "1:1" make it square
And by the way - I am using support library for no reason on this example, you can use androidx
I have ConstraintLayout with two TextView inside:
<androidx.constraintlayout.widget.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="wrap_content">
<TextView
android:id="#+id/first"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<TextView
android:id="#+id/second"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintLeft_toRightOf="#+id/first"
app:layout_constraintRight_toRightOf="parent"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</androidx.constraintlayout.widget.ConstraintLayout>
I want to place the first one at the top left-corner of parent container and to place the second one at the top-right parent's corner. But both textviews can have text with any length. And when first one has very long text it overlaps the second textview. I can solve this problem by wrapping both textviews in LinearLayout. But this way seems to me inelegant. Maybe there is another way to do it? I mean with ConstraintLayout's feautures
First of all, remove the wrap_content from your widths as this makes the left/right constraints irrelevant. Use 0dp in its place to make it adhere to the constraints' rules.
Then create a horizontal chain between the views and have it as spread, so that the views don’t overlap at any point and they also stay at the edges of the screen at all times.
Finally, align the texts accordingly so that the left one aligns to the start of the view and the right one aligns to the end. In the example below you see that no matter how long the text is, the views don’t overlap and stick to their sides.
NOTE: It is considered better practice to use start/end constraints (as in my code) instead of left/right in order to cater for devices with different text direction. You can also modify the code below by adding the appropriate margins to have the text farther away from the edges of the screen.
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.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">
<TextView
android:id="#+id/first"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:textAlignment="viewStart"
app:layout_constraintEnd_toStartOf="#+id/second"
app:layout_constraintHorizontal_chainStyle="spread"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:text="#tools:sample/lorem/random" />
<TextView
android:id="#+id/second"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:textAlignment="viewEnd"
app:layout_constrainedWidth="true"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_chainStyle="spread"
app:layout_constraintStart_toEndOf="#id/first"
app:layout_constraintTop_toTopOf="parent"
tools:text="#tools:sample/lorem/random" />
</androidx.constraintlayout.widget.ConstraintLayout>
use this
<androidx.constraintlayout.widget.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="wrap_content">
<TextView
android:id="#+id/first"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="chauhan"/>
<TextView
android:id="#+id/second"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintRight_toRightOf="parent"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="mehul"/>
</androidx.constraintlayout.widget.ConstraintLayout>
<androidx.constraintlayout.widget.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="wrap_content">
<TextView
android:id="#+id/first"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<TextView
android:id="#+id/second"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintLeft_toRightOf="#+id/first"
app:layout_constraintRight_toRightOf="parent"
android:gravity="right"
android:layout_width="0dp"
android:layout_height="wrap_content" />
</androidx.constraintlayout.widget.ConstraintLayout>
This way second TextView won't overlap first one for sure, but there might happen that first is too long so that there is no place for second one. If that could be the case I would recommend setting maxWidth to first TextView, so that in worst case scenario there is some space left for second TextView.
Also I added graviti to second one to keep text on right side of TextView.
<androidx.constraintlayout.widget.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="wrap_content">
<TextView
android:id="#+id/first"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
android:layout_width="0dp"
app:layout_constraintRight_toLeftOf="#+id/second"
android:layout_height="wrap_content" />
<TextView
android:id="#+id/second"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintLeft_toRightOf="#+id/first"
app:layout_constraintRight_toRightOf="parent"
android:layout_width="0dp"
android:layout_height="wrap_content" />
</androidx.constraintlayout.widget.ConstraintLayout>
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<androidx.appcompat.widget.AppCompatTextView
android:id="#+id/tvFirst"
android:layout_width="0dp"
android:layout_height="wrap_content"
app:layout_constraintEnd_toStartOf="#+id/tvSecond"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<androidx.appcompat.widget.AppCompatTextView
android:id="#+id/tvSecond"
android:layout_width="0dp"
android:layout_height="wrap_content"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toEndOf="#+id/tvFirst"
app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
I am attempting to design a chat item in a RecyclerView with constraint layout but a can't set the flexible width correctly.
Android constraint layout:
<?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:id="#+id/receive_message_wrapper"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:id="#+id/receive_message_label"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAlignment="textStart"
android:textColor="#color/receive_message_box_text"
android:background="#drawable/message_recieve"
android:padding="#dimen/message_box_padding"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintEnd_toStartOf="#id/receive_time_label"
app:layout_constraintHorizontal_chainStyle="spread_inside"
/>
<TextView
android:id="#+id/receive_time_label"
android:layout_width="wrap_content"
app:layout_constrainedWidth="true"
android:layout_height="wrap_content"
android:text="timestamp"
android:textAlignment="textEnd"
android:layout_marginStart="#dimen/space_between_message_element"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toEndOf="#id/receive_message_label"
app:layout_constraintEnd_toEndOf="parent"
tools:ignore="HardcodedText"
/>
</android.support.constraint.ConstraintLayout>
It works well but if I show some longer message, the timestamp is hidden by receive message label.
The solution from anber is good, but the chat content textView will have extended width, even when the content is very short, which may become not good.
I also did something very similar. Finally I used a solution as:
use a LinearLayout (or any other layout) which has width=0 (match_constraint) to replace the TextView
move TextView as child of above layout, and set its width=wrap_content
Thus the time will show anyway, and the chat content width is still wrapped.
UPD. My previous solution was incorrect as #aimin-pan mentioned.
you should set for you message textView
android:layout_width="wrap_content" and app:layout_constrainedWidth="true", and right constraint before left side of time textView.
And time textView just align on top-right of parent.
In this case if you have short text it will be wrap context:
And if the text is long it will also correct wrap:
Full xml:
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.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="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
android:layout_marginEnd="8dp"
android:text="Button"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:id="#+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:layout_marginEnd="8dp"
android:background="#F00"
android:text="asdf asdf aasdf"
app:layout_constrainedWidth="true"
app:layout_constraintEnd_toStartOf="#+id/button"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
In your time TextView remove this line
app:layout_constraintStart_toEndOf="#id/receive_message_label"
So, the time label is not constrained to the message, but only the message to the time.
Set also the message label width to 0dp
android:layout_width="0dp"
Place a Blank View After Time textView
<View
android:id="#+id/view"
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_constraintBottom_toBottomOf="#+id/constraintLayout3"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toEndOf="#+id/constraintLayout3"
app:layout_constraintTop_toTopOf="#+id/constraintLayout3" />
Consider the following layout:
<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:id="#+id/container"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:id="#+id/text_view"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:ellipsize="end"
android:maxLines="1"
android:padding="8dp"
android:textSize="18sp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:text="Text" />
<ImageView
android:layout_width="48dp"
android:layout_height="48dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0"
app:layout_constraintStart_toEndOf="#id/text_view"
app:layout_constraintTop_toTopOf="parent"
tools:background="#android:color/black" />
</android.support.constraint.ConstraintLayout>
The image view (or button, or any other widget, important is that it has a fixed size) is aligned right/end of a TextView with a size of wrap_content, thus, the text itself only takes the space it needs.
What I now want is, when the text expands (aka if it's longer), that the button gets aligned to the right of the parent, and the text view only gets the width that is left and gets ellipsized.
At the moment, the image view is pushed outside and the text gets ellipsized once it fills the whole parent.
I tried to fix this by adding a endToEnd="parent" constraint the the image and setting the horizontal bias to 0 (see code), but that doesn't work.
Any suggestions on what I could do instead?
In order to prevent the ImageView from getting pushed outside the parent you need to constrain the end of the TextView to the start of the ImageView to create a chain. Now to ensure that the TextView only takes the space it needs but also has its constraints enforced, you need to add app:layout_constrainedWidth="true" attribute to your TextView.
If you want the ImageView to stay immediately to the right of the TextView can use packed chain style with a horizontal bias of 0.
If you want the ImageView to be aligned to the right of the parent you can use the spread_inside chain style without bias.
The resulting XML with above changes might look like 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:id="#+id/container"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:id="#+id/text_view"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:ellipsize="end"
android:maxLines="1"
android:padding="8dp"
android:textSize="18sp"
app:layout_constrainedWidth="true"
app:layout_constraintHorizontal_bias="0"
app:layout_constraintHorizontal_chainStyle="packed"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toStartOf="#id/image_view"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:text="Text" />
<ImageView
android:id="#+id/image_view"
android:layout_width="48dp"
android:layout_height="48dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toEndOf="#id/text_view"
app:layout_constraintTop_toTopOf="parent"
tools:background="#android:color/black" />
</android.support.constraint.ConstraintLayout>
EDIT: As requested in the comment, here's how it would work with a Barrier sparating the 3 TextViews and the ImageView. In this case you don't specify the constraints for the ends of the TextViews thus you no longer have them chained horizontally. Instead, you create a Barrier with the direction being the end of all TextViews that are referenced in the Barrier. This will ensure that the Barrier is always at the end of the widest TextView. The last thing to do is to constrain the start side of the ImageView to the Barrier.
Example 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"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/container"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:id="#+id/text_view1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:ellipsize="end"
android:maxLines="1"
android:padding="8dp"
android:textSize="18sp"
app:layout_constraintHorizontal_bias="0"
app:layout_constraintBottom_toTopOf="#id/text_view2"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:text="Text1" />
<TextView
android:id="#+id/text_view2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:ellipsize="end"
android:maxLines="1"
android:padding="8dp"
android:textSize="18sp"
app:layout_constraintHorizontal_bias="0"
app:layout_constraintBottom_toTopOf="#id/text_view3"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#id/text_view1"
tools:text="Text2" />
<TextView
android:id="#+id/text_view3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:ellipsize="end"
android:maxLines="1"
android:padding="8dp"
android:textSize="18sp"
app:layout_constraintHorizontal_bias="0"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#id/text_view2"
tools:text="Text3" />
<android.support.constraint.Barrier
android:id="#+id/barrier"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:barrierDirection="end"
app:constraint_referenced_ids="text_view1,text_view2,text_view3" />
<ImageView
android:id="#+id/image_view"
android:layout_width="48dp"
android:layout_height="48dp"
app:layout_constraintHorizontal_bias="0"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toEndOf="#id/barrier"
app:layout_constraintTop_toTopOf="parent"
tools:background="#android:color/black" />
</android.support.constraint.ConstraintLayout>