first of all I am new to Android-Development.
My question is regards alignment of different views in Android Studio/Development.
Specifically the properly height-alignment of an icon and text.
Icon-Text-Alignment
As you can see, I tried to align the text with the icon. However the result looks slightly different in the emulator.
Here is my .xml-file:
<?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=".DashboardActivity">
<TextView
android:id="#+id/textView3"
android:layout_width="0dp"
android:layout_height="50dp"
android:layout_marginStart="32dp"
android:layout_marginTop="32dp"
android:layout_marginBottom="352dp"
android:fontFamily="#font/poppins_medium"
android:text="Dashboard"
android:textAlignment="viewStart"
android:textColor="#color/colorText"
android:textSize="30sp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toStartOf="#+id/imageView10"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.04" />
<ImageView
android:id="#+id/imageView10"
android:layout_width="40dp"
android:layout_height="40dp"
android:layout_marginEnd="32dp"
app:layout_constraintBottom_toBottomOf="#+id/textView3"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toEndOf="#+id/textView3"
app:layout_constraintTop_toTopOf="#+id/textView3"
app:srcCompat="#drawable/ic_settings_black_24dp" />
</androidx.constraintlayout.widget.ConstraintLayout>
My questions are:
1. How can i fix the alignment of these two views?
2. Why is the result in the emulator different?
3. Is there a best-practice to align views properly?
<?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=".DashboardActivity">
<TextView
android:id="#+id/textView3"
android:layout_width="0dp"
android:layout_height="50dp"
android:layout_marginStart="32dp"
android:layout_marginTop="32dp"
android:layout_marginBottom="352dp"
android:fontFamily="#font/poppins_medium"
android:text="Dashboard"
android:textAlignment="viewStart"
android:textColor="#color/colorText"
android:textSize="30sp"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintEnd_toStartOf="#+id/imageView10" />
<ImageView
android:id="#id/imageView10"
android:layout_width="40dp"
android:layout_height="40dp"
android:layout_marginEnd="32dp"
app:srcCompat="#drawable/ic_settings_black_24dp"
app:layout_constraintTop_toTopOf="#id/textView3"
app:layout_constraintBottom_toBottomOf="#id/textView3"
app:layout_constraintEnd_toEndOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
You can do this simply by using a custom toolbar and adding a menu to it.
Try using Custom toolbar :
<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="match_parent"
android:orientation="vertical"
tools:context=".terminalShortActivity">
<androidx.appcompat.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="#4EACE2"
app:popupTheme="#style/ThemeOverlay.AppCompat">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center_vertical"
android:orientation="horizontal">
<TextView
style="#style/TextAppearance.AppCompat.Widget.ActionBar.Title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Terminal Shortcuts"
android:textColor="#FFFFFF" />
</LinearLayout>
</androidx.appcompat.widget.Toolbar>
</LinearLayout>
So I dig into the alignment issue a little further and came up with a few "solutions". Generally speaking and to answer my questions the "Custom Toolbar" is not the right solution to align the views.
The problem lies in the padding of fonts. Android take the whole view to align views and not as assumed the "text" only. Therefore the alignment looks off.
Different paddings/fonts
Poppinsmedium: without padding
Poppinsmedium: with padding; normal state
Android-Font: with padding; normal state
The bottom-padding can be eliminated with the following code:
android:includeFontPadding="false"
Or check this thread for more in-depth knowledge of the issues of font-padding.
To align views, now I am using Chain-Constraints and do it without padding. It looks like the best-way to align views, especially Text-Views. However, I have to say that despite the deleting of the bottom padding it is necessary to adjust the alignment a littlebit with the vertical-bias.
For reference:
constraintlayout.com
Android-Doc: constrain-chain
Related
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 am trying to center the text in a TextView, which itself is contained in a constraint layout. The problem is, wrap_content does not wrap the text tightly enough, which causes it to be off-center. I tried all gravities, making it fill the parent and then use gravities, etc. and can't think of a solution and did not find anything useful when googling.
Problem can be seen well in the layout preview:
badge.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"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:textAlignment="center"
tools:layout_height="32dp"
tools:layout_width="32dp">
<ImageView
android:id="#+id/badge_background"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:src="#drawable/circle_accent"
android:visibility="gone"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:visibility="visible"/>
<TextView
android:id="#+id/badge_counter"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:foregroundGravity="center"
android:gravity="center"
android:textAlignment="center"
android:textColor="#color/white"
android:visibility="gone"
app:layout_constraintBottom_toBottomOf="#+id/badge_background"
app:layout_constraintLeft_toLeftOf="#id/badge_background"
app:layout_constraintRight_toRightOf="#id/badge_background"
app:layout_constraintTop_toTopOf="#id/badge_background"
tools:text="21"
tools:visibility="visible" />
<ImageView
android:id="#+id/badge_watched_tick"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/ic_watch"
android:visibility="gone"
app:layout_constraintBottom_toBottomOf="#+id/badge_background"
app:layout_constraintLeft_toLeftOf="#id/badge_background"
app:layout_constraintRight_toRightOf="#id/badge_background"
app:layout_constraintTop_toTopOf="#id/badge_background"/>
</androidx.constraintlayout.widget.ConstraintLayout>
Try to use round drawable as TextView background
My problem is that the controls (checkboxes, buttons etc) which I have placed are not visible on my emulator.
Below is my XML 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"
tools:context=".MainActivity">
<Button
android:id="#+id/btn1"
android:layout_width="match_parent"
android:layout_height="52dp"
android:text="#string/btn1"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="1.0"
app:layout_constraintStart_toStartOf="parent"
tools:ignore="MissingConstraints"
tools:layout_editor_absoluteY="0dp" />
<Button
android:id="#+id/btn2"
android:layout_width="match_parent"
android:layout_height="77dp"
android:text="#string/btn2"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="parent"
tools:ignore="MissingConstraints"
tools:layout_editor_absoluteY="68dp" />
<fragment
android:id="#+id/fragment"
android:name="com.example.mypc.fragmentactivity.Fragment1"
android:layout_width="222dp"
android:layout_height="285dp"
android:layout_marginBottom="40dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
tools:ignore="MissingConstraints" />
Here is my XML (design view):
Here is my emulator window:
Is there is something wrong in my XML file?
Please provide me solution for this.
How should I handle this?
You are using ConstraintLayout without relative positioning.
According to developer site:
Relative positioning is one of the basic building blocks of creating layouts in ConstraintLayout. Those constraints allow you to position a given widget relative to other. You can constrain a widget on the horizontal and vertical axis:
Horizontal Axis: left, right, start and end sides
Vertical Axis: top, bottom sides, and text baseline
Here is the solution which may help you:
<?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"
tools:context=".MainActivity">
<Button
android:id="#+id/btn1"
android:layout_width="match_parent"
android:layout_height="52dp"
android:text="#string/btn1"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintBottom_toBottomOf="#id/btn2"/>
<Button
android:id="#+id/btn2"
android:layout_width="match_parent"
android:layout_height="77dp"
android:text="#string/btn2"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="#id/btn1"
android:layout_marginTop="10dp"/>
</android.support.constraint.ConstraintLayout>
I have used relative positioning to solve the problem. If you are using constraint layout then without relative positioning your views will get overlap with each other.
Because you didn't align properly the second button. it seems like second button overlap first one.
try this one
<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"
tools:context=".activites.HomeActivity"
android:layout_margin="6dp">
<Button
android:id="#+id/btnOne"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginEnd="8dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:text="Button One"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<Button
android:id="#+id/btnTwo"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginEnd="8dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:text="Button Two"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/btnOne" />
<fragment
android:id="#+id/fragment"
android:layout_width="222dp"
android:layout_height="285dp"
android:layout_marginBottom="40dp"
android:layout_marginTop="8dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/btnTwo"
tools:ignore="MissingConstraints" />
</android.support.constraint.ConstraintLayout>
output would be like this
In your code your elements are overflowing each other at one position that is why they are not visible.
My suggestion is do not constraint Layout at initial stage of learning android.
Use Linear Layout in place of constraint Layout.
Since in constraint Layout Layout Editor uses constraints to determine the position of a UI element within the layout. You have to give many constraint XML attributes like.
app:layout_editor_absoluteX="73dp"
app:layout_editor_absoluteY="176dp"
app:layout_constraintLeft_creator="1"
app:layout_constraintTop_creator="1"
app:layout_constraintRight_creator="1"
to specify the position of elements in layout.
Use Linear Layout in place of Constraint Layout and give
orientation:"vetical"
to view all your elements.
The layout_editor attributes are only used for the editor preview and have no effect on the final layouts. You should position your elements using the ConstraintLayout specific attributes.
It's used to just for preview purpose.
tools:layout_editor_absoluteY="68dp"
Simply use LinearLayout instead of ConstraintLayout. Also provide orientation vertical to that LinearLayout.
It will helps you
<?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="match_parent"
android:orientation="vertical"
tools:context=".MainActivity">
<Button
android:id="#+id/btn1"
android:layout_width="match_parent"
android:layout_height="52dp"
android:text="#string/btn1" />
<Button
android:id="#+id/btn2"
android:layout_width="match_parent"
android:layout_height="77dp"
android:text="#string/btn2" />
<fragment
android:id="#+id/fragment"
android:name="com.example.mypc.fragmentactivity.Fragment1"
android:layout_width="222dp"
android:layout_height="285dp"
android:layout_marginBottom="40dp" />
</LinearLayout>
I have an XML file with an ImageView and a TextView. Everytime that the TextView is populated, the text goes off of the screen. I looked at other people who have had the same problem and the common solution seems to be to set the Textview's width to 0dp. This hasn't worked for me. Wondering if anyone knows why?
Here is my constraintLayout XML file:
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
xmlns:app="http://schemas.android.com/apk/res-auto">
<ImageView
android:id="#+id/weather_icon"
app:layout_constraintRight_toLeftOf="#id/weather_data"
android:layout_width="50dp"
android:layout_height="match_parent" />
<TextView
android:id="#+id/weather_data"
android:text="EXAMPLE"
android:textStyle="bold"
android:paddingRight="16dp"
style="#style/TextAppearance.AppCompat.Large"
app:layout_constraintLeft_toRightOf="#id/weather_icon"
app:layout_constraintEnd_toEndOf="parent"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
Here is what it looks like, text is clearly getting cut off:
I got the solution of your problem just use it:
<?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">
<ImageView
android:id="#+id/weather_icon"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toLeftOf="#id/weather_data"
android:layout_width="50dp"
android:layout_height="wrap_content" />
<TextView
android:id="#+id/weather_data"
android:text="EXAMPLE "
android:textStyle="bold"
android:paddingRight="16dp"
style="#style/TextAppearance.AppCompat.Large"
app:layout_constraintLeft_toRightOf="#id/weather_icon"
app:layout_constraintRight_toRightOf="parent"
android:layout_width="0dp"
android:layout_height="wrap_content"/>
</android.support.constraint.ConstraintLayout>
You should set the width of your TextView to match_constraint which, in the XML, will be 0dp.
And I see you're using both left/right and start/end notations. Stick to only one of them.
I encourage you to use the start/end notation because there might be devices using your app that their language is one that reads from right to left, i.e.: Arabic, so using the start/end you don't have to worry about these devices.
Thanks to Sandeep and Martin. I combined their suggestions and this works well in the layout:
<ImageView
android:id="#+id/weather_icon"
app:layout_constraintEnd_toStartOf="#id/weather_data"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
android:layout_width="50dp"
android:layout_height="wrapcontent" />
<TextView
android:id="#+id/weather_data"
android:text="EXAMPLE"
android:textStyle="bold"
android:paddingRight="16dp"
app:layout_constraintStart_toEndOf="#id/weather_icon"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="parent"
style="#style/TextAppearance.AppCompat.Large"
android:layout_width="0dp"
android:layout_height="wrap_content" />
I'm begginer with Android Studio and I'm trying to center vertically content of ConstraintLayout, but without success. I've tried to use android:gravity="center" and I removed the app:layout_editor_absoluteY of all the elements, but not happens... So, how can I centralize 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:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#layout/gradient"
android:gravity="center"
tools:context="com.test.test.MainActivity"
tools:layout_editor_absoluteY="81dp"
tools:layout_editor_absoluteX="0dp">
<EditText
android:id="#+id/txtEmail"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:ems="10"
android:hint="#string/lblEmail"
android:inputType="textEmailAddress"
android:textColorHint="#color/colorGray"
android:background="#color/colorWhite"
android:padding="15dp" />
<EditText
android:id="#+id/txtSenha"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:layout_marginTop="8dp"
android:ems="10"
android:hint="#string/lblSenha"
android:inputType="textPassword"
android:textColorHint="#color/colorGray"
android:background="#color/colorWhite"
android:padding="15dp"
app:layout_constraintTop_toBottomOf="#+id/txtEmail" />
<Button
android:id="#+id/btnEntrar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:text="#string/lblEntrar"
app:layout_constraintTop_toBottomOf="#+id/txtSenha" />
</android.support.constraint.ConstraintLayout>
ConstraintLayout is pretty flexible in the arrangements you can make, but from your description I think a "Packed Chain" would fit what your asking for.
A "Chain" means that all the Views in a line constrain to each other in both directions, so the top view constrains to the next view down and that next view constrains back up to the top view and so on down the chain. You then have some options for how the chain behaves. So in your example(extra stuff removed for simplicity):
<android.support.constraint.ConstraintLayout
....
android:layout_width="match_parent"
android:layout_height="match_parent">
<EditText
android:id="#+id/txtEmail"
android:layout_width="match_parent"
android:layout_height="wrap_content"
...
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintBottom_toTopOf="#+id/txtSenha"
app:layout_constraintVertical_chainStyle="packed" />
<EditText
android:id="#+id/txtSenha"
android:layout_width="match_parent"
android:layout_height="wrap_content"
...
app:layout_constraintTop_toBottomOf="#+id/txtEmail"
app:layout_constraintBottom_toTopOf="#+id/btnEntrar"/>
<Button
android:id="#+id/btnEntrar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
...
app:layout_constraintTop_toBottomOf="#+id/txtSenha"
app:layout_constraintBottom_toBottomOf="parent"/>
</android.support.constraint.ConstraintLayout>
In a chain, the top view(or left for horizontal chains) is the "head" where you can change the behaviour of the chain, in this case the chainStyle is packed meaning the views all cram together. By default they will be packed in the centre of the screen, but you can change this by altering the attributes in the "head" view, eg app:layout_constraintVertical_bias="0.9" would put them 90% of the way down the screen instead.
More about chains (including diagrams) in the ConstraintLayout guidance here.