I have an app with an expanded button implemented.
The button shrinks and expands perfectly fine in constraint layout or any other layout except in motion layout.
In which the button does not get expanded after shrink and in the extended state when the state of the button change to shrink on the click of a button then the text gets disappears but the size remains the same.
Version of material design link "implementation 'com.google.android.material:material:1.3.0-beta01'"
<com.google.android.material.floatingactionbutton.ExtendedFloatingActionButton
android:id="#+id/btn_call_helpline"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="#dimen/dimen_20dp"
android:text="#string/txt_emergency"
android:textColor="#color/color_white"
app:backgroundTint="#color/red"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintBottom_toBottomOf="parent"
app:cornerRadius="#dimen/dimen_20dp"
app:elevation="#dimen/dimen_10dp"
app:icon="#drawable/ic_baseline_call_24"
app:iconTint="#color/color_white"
app:rippleColor="#color/color_white" />
I have verified the code and it does not have any such constraint that prevents shrinking and expanding.
The FAB seems to be having trouble with being measured twice. (motionLayout needs to do that)
A Simple work around is to wrap the fab in a container
Like linearLayout
put the LinearLayout in MotionLayout
<LinearLayout
android:id="#+id/fabwrap"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="20dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintBottom_toBottomOf="parent"
>
<com.google.android.material.floatingactionbutton.ExtendedFloatingActionButton
android:id="#+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="hello"
android:textColor="#color/white"
app:backgroundTint="#F00"
app:icon="#drawable/ic_battery"/>
</LinearLayout>
Related
I have a constraint layout with 3 buttons as shown below.
<androidx.appcompat.widget.AppCompatImageButton
android:id="#+id/img_subscribe"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="#dimen/dp20"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
android:visibility="gone"
/>
<androidx.appcompat.widget.AppCompatImageButton
android:id="#+id/img_start_over"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="#dimen/dp45"
app:layout_constraintStart_toEndOf="#id/img_subscribe"
app:layout_constraintTop_toTopOf="parent"
android:visibility="gone"
/>
<androidx.appcompat.widget.AppCompatImageButton
android:id="#+id/img_trailer"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="#dimen/dp45"
app:layout_goneMarginLeft="#dimen/dp20"
app:layout_constraintStart_toEndOf="#id/img_start_over"
app:layout_constraintTop_toTopOf="parent"
android:visibility="visible"
/>
I want to give gone margin for third button only when first two are not visible. But in this current code if the it is taking gone margin when immediate previous button is not visible. How can I make the 3rd button to take the gone margin if and only if the first two are not visible.
Any suggestions appreciated.
This is a great use case for Chains in constraint layout.
Chains in constraintlayout
Instead of using a linear layout chain your buttons together. The 3rd button will take the gone margin as you want it to
I am creating a dialog with two buttons aligned right in relation to the parent ConstraintLayout.
Everything is fine, until the text of the buttons becomes very long. When the text of either or both buttons is lengthy, the buttons extend beyond the bounds of the parent, causing clipping of the text, as shown in the image below. I would like to handle cases where there is longer text.
i.e. The desired behavior would be
buttons should wrap text when text is long
buttons should stay within bounds of parent and obey parent padding
buttons should stay aligned right of parent
When button text is short, the layout works as intended:
When button text is long:
Cancel text is truncated when cancel button text is long. This is happening because the button itself is being pushed past the parent's boundaries.
Cancel text pushed beyond parent boundaries when ok button's text is long, again, because the button is pushed beyond the parent's boundaries.
Layout code
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingBottom="#dimen/dialog_padding"
android:paddingLeft="#dimen/dialog_padding"
android:paddingRight="#dimen/dialog_padding"
android:paddingTop="#dimen/dialog_padding">
<TextView
android:id="#+id/dialog_title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="#dimen/dialog_text_margin"
tools:text="Dialog title" />
<TextView
android:id="#+id/dialog_content"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="#dimen/dialog_text_margin"
app:layout_constraintTop_toBottomOf="#id/dialog_title"
tools:text="Dialog text content" />
<Button
android:id="#+id/cancel_btn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_constraintEnd_toStartOf="#id/ok_btn"
app:layout_constraintTop_toBottomOf="#id/dialog_content"
tools:text="Dismiss" />
<Button
android:id="#+id/ok_btn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toBottomOf="#id/dialog_content"
tools:text="Accept" />
</android.support.constraint.ConstraintLayout>
Things that I've tried to no avail:
adding app:layout_constraintStart_toStartOf="parent" to the cancel button causes the buttons to no longer be aligned right, and so that solution is incorrect
constraining the end of the dismiss button to the start of the accept button causes buttons to no longer be aligned right
using layout_width="0dp" for the buttons and using app:layout_constrainedWidth="true" has no effect
Here are two screen shots of what I think you are trying to accomplish.
First, with some short text:
Now with some long text:
I took a few liberties with the layout and introduced a guideline at 33% of the width that the button are constrained to. You didn't specify how much the button could expand horizontally, so I made this assumption.
The XML for this layout follows. I set the width of the buttons to 0dp or match_constraints so their size would adjust. The buttons have also been placed into a packed chain that groups the two buttons together. The horizontal bias is set to 0.5 now, but increasing it will move the group to the right if it starts to creep left on you.
The ConstraintLayout documentation has some good descriptions of these features and how to use them.
<android.support.constraint.Guideline
android:id="#+id/guideline"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.33" />
<TextView
android:id="#+id/dialog_title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="#dimen/dialog_text_margin"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:text="Dialog title" />
<Button
android:id="#+id/cancel_btn"
android:layout_width="0dp"
android:layout_height="wrap_content"
app:layout_constraintEnd_toStartOf="#+id/ok_btn"
app:layout_constraintHorizontal_chainStyle="packed"
app:layout_constraintStart_toEndOf="#+id/guideline"
app:layout_constraintTop_toBottomOf="#+id/dialog_title"
tools:text="Dismiss" />
<Button
android:id="#+id/ok_btn"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginEnd="8dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toEndOf="#+id/cancel_btn"
app:layout_constraintTop_toTopOf="#+id/cancel_btn"
tools:text="Accept" />
I created two rows of ImageButtons through chains and used the packed style to close the gap between the two rows. However there is a lot of extra space surrounding the overall ImageButtons rows on the top and bottom.
When I try to use layout_constraintVertical_bias="0.1" on the top row buttons and layout_constraintVertical_bias="0.9" on the bottom row buttons to remove the gap it only shifts the rows up to the top of the layout. I know chain constraint details should be in the parent view but is there anyway to get the children of the chain to adapt a bias as well? I know this can be done by changing the width to 0dp but when I do that the images on the bottom become wider than the images at the top due to an uneven number of buttons.
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<ImageButton
android:id="#+id/button1"
android:layout_width="80dp"
android:layout_height="wrap_content"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintBottom_toTopOf="#id/button4"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toLeftOf="#id/button2"
app:layout_constraintVertical_chainStyle="packed"/>
<ImageButton
android:id="#+id/button2"
android:layout_width="80dp"
android:layout_height="wrap_content"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintBottom_toTopOf="#id/button4"
app:layout_constraintLeft_toRightOf="#+id/button1"
app:layout_constraintRight_toLeftOf="#id/button3"
app:layout_constraintVertical_bias="1"/>
<ImageButton
android:id="#+id/button3"
android:layout_width="80dp"
android:layout_height="wrap_content"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintBottom_toTopOf="#id/button5"
app:layout_constraintLeft_toRightOf="#id/button2"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintVertical_chainStyle="packed"/>
<ImageButton
android:id="#+id/button4"
android:layout_width="80dp"
android:layout_height="wrap_content"
app:layout_constraintTop_toBottomOf="#id/button1"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toLeftOf="#id/button5"
app:layout_constraintBottom_toBottomOf="parent"/>
<ImageButton
android:id="#+id/button5"
android:layout_width="80dp"
android:layout_height="wrap_content"
app:layout_constraintTop_toBottomOf="#id/button3"
app:layout_constraintLeft_toRightOf="#id/button4"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintBottom_toBottomOf="parent"/>
</android.support.constraint.ConstraintLayout>
Edit:
This is what I'm trying to accomplish below. I basically want the arrows to push up to the red line while the ImageButtons stay in the place they are at right now so there is a gap between the buttons and the top and bottom edge of the layout. I attempted to shrink the gap in the second image using vertical bias but as you can see it only worked for the top row of buttons and not the buttons on the bottom row.
So, the question is really "why is my ConstraintLayout so tall?" If you can use a later release of ConstraintLayout (1.1.0-beta3 is the latest), this problem will go away. If you can't use a beta release, there is a work-around but upgrading is the best solution. Ping back if you can't use a beta release.
I have the following ConstraintLayout in my Android application:
<android.support.constraint.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/white">
<ImageView
android:id="#+id/image_icon"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/icon"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
/>
<TextView
android:id="#+id/instructions"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="#dimen/spacing_large"
android:text="#string/instruction"
app:layout_constraintTop_toBottomOf="#id/support_ic"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
/>
<Button
android:id="#+id/call_button"
android:layout_marginTop="#dimen/spacing_large"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#null"
android:text="#string/phone"
android:textSize="18sp"
android:textColor="#drawable/button"
app:layout_constraintTop_toBottomOf="#+id/instructions"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
/>
<EditText
android:id="#+id/message_content"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:lines="8"
android:hint="#string/support_message_hint"
android:textColorHint="#color/text_hint"
android:inputType="textCapSentences|textMultiLine"
android:background="#color/background_gray"
android:padding="#dimen/spacing_small"
android:textColor="#color/black"
app:layout_constraintBottom_toTopOf="#+id/send_button"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintEnd_toEndOf="parent"
android:gravity="top|left"
app:layout_constraintHorizontal_weight="1"
app:layout_constraintVertical_weight="1"
/>
<Button
android:id="#+id/send_button"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:text="#string/support_send"
android:background="#color/button_blue"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintEnd_toEndOf="parent" />
</android.support.constraint.ConstraintLayout>
When I open the keyboard, the view adjusts and the bottom two widgets (the button and the editText) move with the keyboard. My problem however, is that whenever this happens, the #id/call_button Button lays on top of the editText. I do not want this. I want the editText to overlay the button when the keyboard is open.
Is there any way to make the editText take precedent when overlapping other widgets in this scenario? I tried adding editText.bringToFront() in my onCreate method, but that didn't do anything.
Also, I am trying to avoid nesting the bottom two widgets (the button and the editText) inside of their own layout. I want them all to remain in the same ConstraintLayout. Thank you for the help ahead of time.
I added android:elevation="4dp" to the editText's xml and it worked.
Material Design guidelines specify that Buttons use elevation in both their pressed (8dp elevation) and upressed (2dp elevation) states. https://material.io/guidelines/material-design/elevation-shadows.html#elevation-shadows-elevation-android
Which view you see when two are stacked on top of each other at the same elevation is dependent on the ordering of those views in your layout (e.g. why you expected the views written later to overlay the views written earlier), but elevation takes precedence over this.
As you've found, you can add elevation to your other views to make them "higher" than your button, but this is a bit ugly and might have some unwanted side-effects. I think a better choice would be to set the manifest attribute android:windowSoftInputMode="adjustPan" on your activity. This will cause your activity's view to slide up when the keyboard opens, rather than resizing.
I am trying to show textview on the top of Floating Action Button. Inside FrameLayout, I have 1 FAB and 1 TextView:
<FrameLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|start"
android:padding="#dimen/fab_margin">
<android.support.design.widget.FloatingActionButton
android:id="#+id/fabAddSeller"
android:layout_width="70dp"
android:layout_height="70dp"
app:backgroundTint="#3780f4"
android:stateListAnimator="#null"/>
<TextView
android:id="#+id/tvSellRecordCount"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#drawable/sell_record_counter"
android:layout_gravity="top|end"
android:text="12"
android:textColor="#FFFFFF"
android:textSize="10sp" />
</FrameLayout>
According to this answer, I have added
android:stateListAnimator="#null"
to FAB - no difference. I have put TextView after FAB - no effect.
How to show another view on top of FloatingActionButton?
In Android Studio, I could fix after adding an elevation to the text view:
android:elevation="6dp"
It seems that FAB has 5dp of elevation.
However, I'm not sure if this totally works to you since elevation is available for API>=21.
Try to make some tests in real devices...
Maybe, android:stateListAnimator="#null" is enough in real devices/emulator.
UPDATE
After adding app:elevation, this fix started to work with older APIs as well
app:elevation="6dp"
android:elevation="6dp"
Replace FrameLayout with RelativeLayout and add
<android.support.design.widget.FloatingActionButton
...
android:layout_below="#+id/tvSellRecordCount"
...
/>