i am new to android development. I want to know how to use the attribute android:layout_gravity and can i use this option to position a view at center of the screen width.??
I tried the following but it's aligning at top
<?xml version="1.0" encoding="utf-8"?>
<TableLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<TextView
android:id="#+id/textview"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="Table Layout" />
<TableRow>
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="0.2"
android:text="Username"
android:textAppearance="?android:attr/textAppearanceMedium" />
<EditText
android:id="#+id/editText1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_weight="0.8"
android:hint="username" />
</TableRow>
<TableRow>
<TextView
android:id="#+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="0.2"
android:text="Password"
android:textAppearance="?android:attr/textAppearanceMedium" />
<EditText
android:id="#+id/editText2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="0.8"
android:hint="password"
android:inputType="textPassword" />
</TableRow>
<TableRow>
<Button
android:id="#+id/button1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_weight="0.5"
android:text="SAVE" />
<Button
android:id="#+id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="0.5"
android:text="CANCLE" />
</TableRow>
</TableLayout>
and my output is :
In Android there is
android:gravity and android:layout_gravity
android:gravity - Is used to move the content of the View or Layout to which this property is set.
android:layout_gravity - Is used to move the View or Layout itself to any position.
Here is a nice demo and explanation of how it works.
gravity and layout_gravity
<Button
android:id="#+id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="0.5"
android:text="CANCEL"
android:gravity="LEFT"
android:orientation="horizontal"
/>
Related
I am trying to display the entire content of each item in ListView. I read other posts (1)(2), but none of them worked.
Things I tried so far:
(1) I added android:minHeight="?android:attr/listPreferredItemHeight" to TextView
(2) Just in case, I added android:minHeight="?android:attr/listPreferredItemHeight" to ListView
(3) I added android:height=wrap_content to TextView
(4) I added android:height=wrap_content to to ListView
(5) I added (1) and (3)
(6) I added (2) and (4)
(7) I added convertView.setMinimumHeight(100); in my java file
Here is my file with ListView:
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".FragmentNotes"
android:theme="#style/FontStyle"
android:id="#+id/fragment_note_id">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/colorPrimary"
android:orientation="vertical">
<TextView
android:id="#+id/white_background_round"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_centerInParent="true"
android:layout_marginLeft="10dp"
android:layout_marginTop="10dp"
android:layout_marginRight="10dp"
android:layout_marginBottom="10dp"
android:background="#drawable/white_background_round" />
<RelativeLayout
android:id="#+id/title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignTop="#+id/white_background_round"
android:layout_centerHorizontal="true"
android:layout_marginTop="15dp">
<TextView
android:id="#+id/title_string"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Notes"
android:textColor="#color/colorPrimary"
android:textSize="45sp"
android:textStyle="bold"
android:layout_marginBottom="10sp"/>
<ImageView
android:id="#+id/title_image"
android:layout_width="70dp"
android:layout_height="70dp"
android:layout_alignTop="#+id/title_string"
android:layout_alignBottom="#+id/title_string"
android:layout_marginLeft="20dp"
android:layout_toEndOf="#+id/title_string"
android:background="#drawable/ic_note_english" />
</RelativeLayout>
<ImageView
android:id="#+id/button_background"
android:layout_width="wrap_content"
android:layout_marginTop="10dp"
android:layout_height="30dp"
android:layout_alignStart="#+id/white_background_round"
android:layout_alignEnd="#+id/white_background_round"
android:layout_marginRight="60dp"
android:layout_marginLeft="60dp"
android:layout_below="#+id/title"
android:background="#drawable/light_background_round_english" />
<Button
android:id="#+id/btn_my_notes"
android:layout_width="wrap_content"
android:layout_height="30dp"
android:layout_alignTop="#+id/button_background"
android:layout_alignStart="#+id/button_background"
android:layout_alignBottom="#+id/button_background"
android:layout_toStartOf="#+id/centerline"
android:text="My Notes"
android:textColor="#color/colorPrimary"
android:textStyle="bold"
android:background="#android:color/transparent"
android:elevation="10dp"/>
<Button
android:id="#+id/btn_all_notes"
android:layout_width="wrap_content"
android:layout_height="30dp"
android:layout_alignTop="#+id/button_background"
android:layout_alignEnd="#+id/button_background"
android:layout_alignBottom="#+id/button_background"
android:layout_toEndOf="#+id/centerline"
android:text="All Notes"
android:textColor="#color/colorPrimary"
android:textStyle="bold"
android:background="#android:color/transparent"
android:elevation="10dp"/>
<TextView
android:id="#+id/centerline"
android:layout_width="1dp"
android:layout_height="10dp"
android:layout_alignBottom="#+id/button_background"
android:layout_centerHorizontal="true"
android:layout_below="#+id/title"
android:background="#color/colorPrimary"
android:layout_margin="5dp"
android:layout_alignTop="#+id/button_background"/>
<ListView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignRight="#+id/white_background_round"
android:layout_alignLeft="#id/white_background_round"
android:layout_alignBottom="#id/white_background_round"
android:layout_below="#+id/button_background"
android:layout_margin="10sp"
android:id="#+id/list_view" />
<com.google.android.material.floatingactionbutton.FloatingActionButton
android:id="#+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:clickable="true"
android:layout_margin="20dp"
android:layout_alignBottom="#id/white_background_round"
android:layout_alignRight="#id/white_background_round"
android:src="#drawable/ic_add_white"/>
</RelativeLayout>
</FrameLayout>
And here is my file with TextView:
<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/listview_item_text"
android:textColor="#color/colorPrimary"
android:text="1) When anyone brings a grain offering to the Lord, their offering is to be of the finest flour. They are to pour olive oil on it, put incense on it"
android:textSize="20dp"
android:paddingLeft="20sp"
android:paddingRight="20sp"
android:paddingTop="10sp"
android:paddingBottom="10sp"
android:textStyle="bold"
android:lineSpacingMultiplier="1.5"
android:layout_width="fill_parent"
android:singleLine="true"
android:layout_height="wrap_content"/>
Any help will be greatly appreciated.
Just in case anyone needs this answer, I found that the problem was TextView's line android:singleLine="true". I removed the line, and now I can see all contents for each item in ListView.
Having three textView, the content size varies. Want to show ellipsis if the content to to big.
|[aaa][bbb][ccc] |
|[aaaaaaa...][bbbbbb.][ccc]|
|[aaa][bbbbbb.......][c...]|
|[aaaa...][bbbb...][ccc...]|
could not find a solution using constraintLayout for it. This one does not do wanted,
but if it can set the the [a] with a maxWidth by percentage of the parent width, so that it can leave some width for the [b] and [c]
something like (but it does not exist)
android:maxWidth="50%"
Any suggestion?what is
<?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:background="#android:color/white"
android:padding="22dp">
<TextView
android:id="#+id/greenTextView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="8dp"
android:ellipsize="end"
android:maxLines="1"
android:textColor="#android:color/holo_green_dark"
app:layout_constraintEnd_toStartOf="#id/blueTextView"
app:layout_constraintHorizontal_chainStyle="packed"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:text="Firdsfgsdfgasdsdfasdsdfsds" />
<TextView
android:id="#+id/blueTextView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="8dp"
android:ellipsize="end"
android:maxLines="1"
android:textColor="#android:color/holo_blue_dark"
app:layout_constrainedWidth="true"
app:layout_constraintBaseline_toBaselineOf="#id/greenTextView"
app:layout_constraintEnd_toStartOf="#id/orangetextView"
app:layout_constraintStart_toEndOf="#id/greenTextView"
app:layout_constraintTop_toTopOf="parent"
tools:text="Secoasdfsdfsdfsdfsdf.." />
<TextView
android:id="#+id/orangetextView"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginEnd="8dp"
android:ellipsize="end"
android:maxLines="1"
android:textColor="#android:color/holo_orange_dark"
app:layout_constraintBaseline_toBaselineOf="#id/blueTextView"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toEndOf="#id/blueTextView"
tools:text="Third Very Long Text 123456789" />
</androidx.constraintlayout.widget.ConstraintLayout>
It's a simple workaround for that, to achieving the logic of percentage for width we can use two vertical Guideline that can split the screen into three sections:
This is a simple code I wrote for you:
<?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:background="#android:color/white"
android:padding="22dp">
<TextView
android:id="#+id/greenTextView"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:ellipsize="end"
android:maxLines="1"
android:textColor="#android:color/holo_green_dark"
app:layout_constraintEnd_toStartOf="#+id/guideline"
app:layout_constraintHorizontal_chainStyle="packed"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:text="Firdsfgsdfgasdsdfasdsdfsds" />
<TextView
android:id="#+id/blueTextView"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:ellipsize="end"
android:maxLines="1"
android:textColor="#android:color/holo_blue_dark"
app:layout_constrainedWidth="true"
app:layout_constraintBaseline_toBaselineOf="#id/greenTextView"
app:layout_constraintEnd_toStartOf="#+id/guideline3"
app:layout_constraintStart_toStartOf="#+id/guideline"
app:layout_constraintTop_toTopOf="parent"
tools:text="Secoasdfsdfsdfsdfsdf.." />
<TextView
android:id="#+id/orangetextView"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginEnd="8dp"
android:ellipsize="end"
android:maxLines="1"
android:textColor="#android:color/holo_orange_dark"
app:layout_constraintBaseline_toBaselineOf="#id/blueTextView"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="#+id/guideline3"
tools:text="Third Very Long Text 123456789" />
<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="0.33" />
<androidx.constraintlayout.widget.Guideline
android:id="#+id/guideline3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.66" />
</androidx.constraintlayout.widget.ConstraintLayout>
you can customize spaces by margins, any comments or modifications please tell me,cheers
hey last few days I am exploring about the constraint layout.the concept of barrier I can understand but when i implement I can't get the correct output.
I want to set the barrier in the right direction to reference Id's. But barrier doesn't work.it should set for the views which are nameLabel and passionLabel. please help me. thank you in advance. This is the current output
<?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/activity_main_barriers"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="#+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginTop="16dp"
android:layout_marginEnd="8dp"
android:fontFamily="#font/roboto_bold"
android:text="#string/barriers"
android:textColor="#color/black"
android:textSize="25sp"
android:textStyle="bold"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<ImageView
android:id="#+id/header"
android:layout_width="0dp"
android:layout_height="149dp"
android:layout_marginTop="8dp"
android:scaleType="centerCrop"
android:src="#drawable/arun"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="#+id/textView" />
<TextView
android:id="#+id/title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:layout_marginEnd="8dp"
android:fontFamily="#font/roboto_bold"
android:text="Arun Pandian"
android:textColor="#color/colorPrimaryDark"
android:textSize="24sp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.032"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/header" />
<!--#string/hobbies-->
<TextView
android:id="#+id/passionLabel"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:labelFor="#+id/etPassion"
android:text="#string/passion"
android:textColor="#color/colorPrimaryDark"
android:textSize="15sp"
app:layout_constraintBaseline_toBaselineOf="#+id/etPassion"
app:layout_constraintStart_toStartOf="#+id/nameLabel" />
<TextView
android:id="#+id/nameLabel"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:fontFamily="#font/roboto_italic"
android:labelFor="#+id/cameraType"
android:text="#string/name"
android:textColor="#color/colorPrimaryDark"
android:textSize="15sp"
app:layout_constraintBaseline_creator="1"
app:layout_constraintBaseline_toBaselineOf="#+id/etName"
app:layout_constraintLeft_creator="1"
app:layout_constraintStart_toStartOf="#+id/title"
app:layout_editor_absoluteX="16dp"
app:layout_editor_absoluteY="189dp"
tools:layout_constraintBaseline_creator="0"
tools:layout_constraintLeft_creator="0" />
<EditText
android:id="#+id/etPassion"
android:layout_width="217dp"
android:layout_height="wrap_content"
android:layout_marginTop="16dp"
android:ems="10"
android:inputType="textPersonName"
android:text="Developing softwares"
app:layout_constraintEnd_toEndOf="#+id/etName"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="#+id/etName"
app:layout_constraintTop_toBottomOf="#+id/etName"
app:layout_editor_absoluteX="73dp"
app:layout_editor_absoluteY="225dp"
tools:layout_constraintLeft_creator="1"
tools:layout_constraintRight_creator="1"
tools:layout_constraintTop_creator="0" />
<EditText
android:id="#+id/etName"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginStart="16dp"
android:layout_marginTop="16dp"
android:layout_marginEnd="148dp"
android:inputType="textPersonName"
android:text="Arun Pandian"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toEndOf="#+id/tvName"
app:layout_constraintTop_toBottomOf="#+id/title"
tools:layout_constraintLeft_creator="1"
tools:layout_constraintRight_creator="1"
tools:layout_constraintTop_creator="0" />
<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="nameLabel,passionLabel"
tools:layout_editor_absoluteX="411dp" />
</android.support.constraint.ConstraintLayout>
Try this:
you have to give both edittext start constraint to barrier.
Also when I see in My android studio xml my output is same as you post in your question image. check http://prntscr.com/mkdtgb
But when I see in device it's working
<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/activity_main_barriers"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="#+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginTop="16dp"
android:layout_marginEnd="8dp"
android:text="barriers"
android:textColor="#android:color/black"
android:textSize="25sp"
android:textStyle="bold"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<ImageView
android:id="#+id/header"
android:layout_width="0dp"
android:layout_height="149dp"
android:layout_marginTop="8dp"
android:scaleType="centerCrop"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="#+id/textView" />
<TextView
android:id="#+id/title"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginStart="15dp"
android:layout_marginTop="8dp"
android:layout_marginEnd="8dp"
android:text="Arun Pandian"
android:textColor="#color/colorPrimaryDark"
android:textSize="24sp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/header" />
<!--#string/hobbies-->
<TextView
android:id="#+id/passionLabel"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:labelFor="#+id/etPassion"
android:text="passios"
android:textColor="#color/colorPrimaryDark"
android:textSize="15sp"
app:layout_constraintBaseline_toBaselineOf="#+id/etPassion"
app:layout_constraintStart_toStartOf="#+id/nameLabel" />
<EditText
android:id="#+id/etPassion"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginTop="16dp"
android:ems="10"
android:inputType="textPersonName"
android:layout_marginStart="16dp"
android:text="Developing softwares"
app:layout_constraintEnd_toEndOf="#+id/etName"
app:layout_constraintStart_toEndOf="#+id/barrier2"
app:layout_constraintTop_toBottomOf="#+id/etName" />
<TextView
android:id="#+id/nameLabel"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:labelFor="#+id/cameraType"
android:text="namegfhfgdfgdfgdfgdfgdfgdf"
android:textColor="#color/colorPrimaryDark"
android:textSize="15sp"
app:layout_constraintBaseline_toBaselineOf="#+id/etName"
app:layout_constraintStart_toStartOf="parent" />
<EditText
android:id="#+id/etName"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginStart="16dp"
android:layout_marginTop="16dp"
android:inputType="textPersonName"
android:text="Arun Pandian"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toEndOf="#+id/barrier2"
app:layout_constraintTop_toBottomOf="#+id/title" />
<android.support.constraint.Barrier
android:id="#+id/barrier2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:barrierDirection="end"
app:constraint_referenced_ids="nameLabel,passionLabel" />
</android.support.constraint.ConstraintLayout>
I resolved this issue by updating the ConstraintLayout library
From
implementation 'com.android.support.constraint:constraint-layout:2.0.0-alpha2'
To this
implementation 'com.android.support.constraint:constraint-layout:2.0.0-alpha3'
I had a similar issue when using
implementation 'com.android.support.constraint:constraint-layout:1.1.3'
The same code was working in one project but not in another, both using the same version of the constraint-layout
If it works on device and but not in the layout editor, then try to force refresh the layout in the editor
This seems to be a rendering bug in the Preview in Android Studio 3.3.
The barrier will works at runtime on the emulator.
Suppose i have a horizontal GuideLine at 30% of parent and a View (suppose a Button) how can i make that view be centered on the guideline?
Like this:
Update:
The view i'm using here has height based on ratio, and soltuion on answers doesnt works.
Here is current 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"
tools:context=".MainActivity">
<ImageView
android:id="#+id/imgLogo"
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_constraintBottom_toBottomOf="#id/guideline_30"
app:layout_constraintDimensionRatio="H,1:1"
app:layout_constraintEnd_toStartOf="#+id/guidelineV_75"
app:layout_constraintStart_toEndOf="#+id/guidelineV_25"
app:layout_constraintTop_toTopOf="#+id/guideline_30"
app:srcCompat="#drawable/ic_launcher_background" />
<android.support.constraint.Guideline
android:id="#+id/guideline_30"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.3" />
<android.support.constraint.Guideline
android:id="#+id/guidelineV_25"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.25" />
<android.support.constraint.Guideline
android:id="#+id/guidelineV_75"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.75" />
</android.support.constraint.ConstraintLayout>
Using fix width or height
Need to use same Guideline for both top and bottom constraint like:
app:layout_constraintTop_toTopOf="#id/guideline_30"
app:layout_constraintBottom_toBottomOf="#id/guideline_30"
xml:
<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">
<ImageView
android:id="#+id/imgLogo"
android:layout_width="150dp"
android:layout_height="150dp"
app:layout_constraintTop_toTopOf="#id/guideline_30"
app:layout_constraintBottom_toBottomOf="#id/guideline_30"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintEnd_toEndOf="parent"
android:src="#drawable/splash_logo" />
<android.support.constraint.Guideline
android:id="#+id/guideline_30"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.30" />
</android.support.constraint.ConstraintLayout>
output:
Using width and height based on the ratio
As you are using both width and height based on ratio so that it's not centered.
But to get your desired result you can also set Guideline = 0.15 (0.3 / 2) and modify constraintTop and constraintBotttom
xml:
<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">
<ImageView
android:id="#+id/imgLogo"
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_constraintDimensionRatio="H,1:1"
app:layout_constraintEnd_toStartOf="#+id/guidelineV_75"
app:layout_constraintStart_toEndOf="#+id/guidelineV_25"
app:layout_constraintTop_toTopOf="#+id/guideline_15"
app:srcCompat="#drawable/ic_launcher_background" />
<android.support.constraint.Guideline
android:id="#+id/guideline_15"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.15" />
<android.support.constraint.Guideline
android:id="#+id/guidelineV_25"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.25" />
<android.support.constraint.Guideline
android:id="#+id/guidelineV_75"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.75" />
</android.support.constraint.ConstraintLayout>
output:
You need to constraint both the top and the bottom of the View to the guideline, like so:
<android.support.constraint.Guideline
android:id="#+id/guideline"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.3" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_constraintTop_toTopOf="#id/guideline"
app:layout_constraintBottom_toBottomOf="#id/guideline" />
In ConstraintLayout, for centering the View over Vertical axis of any other View Component (e.g. Guidelines, TextViews, ImageViews, layouts, etc.), you can simply follow these two steps, in XML:-
1) app:layout_constraintTop_toTopOf="#id/componentId"
2) app:layout_constraintBottom_toBottomOf="#id/componentId"
This will Equally distribute the component's View in the Vertical center.
BONUS:-
For centering the View in the Horizontal axis, use
1) app:layout_constraintLeft_toLeftOf="#id/componentId"
or
app:layout_constraintStart_toStartOf="#id/componentId"
2) app:layout_constraintRight_toRightOf="#id/componentId"
or
app:layout_constraintEnd_toEndeOf="#id/componentId"
I have a radio group with three radio buttons
I put the text on the left hand side of radio button with below command
android:drawableRight="#drawable/abc_btn_radio_material"
but the default button color is black and I can't change its color using android:theme command, does anyone know how can I change the default color?
my full radio group code:
<RadioGroup
android:id="#+id/main_loading_radioGroup"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_marginRight="6dp"
android:layout_marginTop="6dp"
android:checkedButton="#+id/main_wall_load"
android:orientation="vertical">
<RadioButton
android:id="#+id/main_wall_load"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:button="#null"
android:drawableRight="#drawable/abc_btn_radio_material"
android:theme="#style/MyRadioButton"
android:layout_gravity="right"
android:text="A"
android:textColor="#000000"
android:textSize="12sp"/>
<RadioButton
android:id="#+id/main_roof_load"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:button="#null"
android:layout_gravity="right"
android:drawableRight="#drawable/abc_btn_radio_material"
android:text="AA"
android:textSize="12sp"/>
<RadioButton
android:id="#+id/main_stairCase_load"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:button="#null"
android:layout_gravity="right"
android:drawableRight="#drawable/abc_btn_radio_material"
android:text="AAA"
android:textColor="#000000"
android:textSize="12sp"/>
</RadioGroup>
Try This code,
Make this file in your res/drawable
radiobutton_drawable.xml
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="#drawable/radio_uncheck" android:state_checked="false" android:state_focused="true" />
<item android:drawable="#drawable/radio_uncheck" android:state_checked="false" android:state_focused="false" />
<item android:drawable="#drawable/radio_check" android:state_checked="true" android:state_focused="true" />
<item android:drawable="#drawable/radio_check" android:state_checked="true" android:state_focused="false" />
</selector>
activity_main.xml:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingTop="#dimen/activity_vertical_margin">
<RadioGroup xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/main_loading_radioGroup"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:orientation="vertical">
<RadioButton
android:id="#+id/main_wall_load"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:button="#android:color/transparent"
android:checked="true"
android:drawablePadding="30dp"
android:drawableRight="#drawable/radiobutton_drawable"
android:text="A"
android:textColor="#000000"
android:textSize="12sp" />
<RadioButton
android:id="#+id/main_roof_load"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:button="#android:color/transparent"
android:drawablePadding="24dp"
android:drawableRight="#drawable/radiobutton_drawable"
android:text="AA"
android:textSize="12sp" />
<RadioButton
android:id="#+id/main_stairCase_load"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:button="#android:color/transparent"
android:drawablePadding="18dp"
android:drawableRight="#drawable/radiobutton_drawable"
android:text="AAA"
android:textColor="#000000"
android:textSize="12sp" />
</RadioGroup>
</RelativeLayout>
These are the drawables which i have used for checked and unchecked state of radio button,
Hereby, i am attaching screenshot,
Hope it will help you!!!