Develop Reference

Clickable Text + Image using TextView in Android

How to put an clickable image in between string using a single TextView.
Using SpannableString, I am able to color part of string. But how to add a colored image? Any suggestion would be really appreciated.

This is not possible for a single TextView element. TextViews are not meant to contain images in the middle of them.
You can, however, add drawable resources to the top, right/start, left/end, or bottom of a given TextView by leveraging the drawableTop, drawableBottom, etc. attributes. But again, no way of adding an image in the middle of a TextView by using only one of them.
If you really want that specific effect, I would group a few XML components into any ViewGroup like a ConstraintLayout to get exactly what you want; e.g.
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<TextView
android:id="#+id/text_part_1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="first part of the text"
android:textSize="16dp"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toStartOf="#id/image"/>
<ImageView
android:id="#+id/image"
android:layout_width="50dp"
android:layout_height="50dp"
android:background="#color/white"
app:layout_constraintStart_toStartOf="#id/text_part_1"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintEnd_toEndOf="#id/text_part_2"/>
<TextView
android:id="#+id/text_part_2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="first part of the text"
android:textSize="16dp"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toEndOf="#id/image"/>
</androidx.constraintlayout.widget.ConstraintLayout>

Custom Layout is not being centered inside a listview using constraintLayout

I'm trying to center the items of my listview which are a custom view to the center of a constraint layout but they only show at the left side.
I tried setting the horizontal bias of both the constraint and the list view to 50 and to 100 but the listView still doesn't show the Items in the center or anywhere else other than at the start. I tried using layout_centerhorizontal="true" but that does not work either. Bare in mind that the listview is being inflated inside a fragment which is inside a ViewPager.
UPDATE:
I fixed it by wrapping the custom_item xml inside a linear layout which filled the entire screen horizontally and added horizontal center gravity to the item.
Here is my xml:
<androidx.constraintlayout.widget.ConstraintLayout
android:id="#+id/parentConstraint_tutor_fragment_loged"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginTop="32dp"
android:layout_marginBottom="8dp"
android:visibility="visible"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.0">
<ListView
android:id="#+id/tutorListView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:divider="#null"
android:dividerHeight="0dp"
android:listSelector="#android:color/transparent"
android:overScrollMode="never"
android:scrollbars="none"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.0"/>
</androidx.constraintlayout.widget.ConstraintLayout>
And here is the custom_Item:
<?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="323dp"
android:layout_height="68dp"
android:layout_gravity="center_horizontal"
android:background="#drawable/tutor_entry_panel_phones_selector">
<ImageView
android:id="#+id/tutorIcon_cell"
android:layout_width="35dp"
android:layout_height="33dp"
android:layout_marginStart="12dp"
android:layout_marginLeft="12dp"
android:scaleType="fitCenter"
android:tint="#color/BlueColor"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:srcCompat="#drawable/login_tutor_icon" />
<TextView
android:id="#+id/userLogin_nameTextV"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginStart="4dp"
android:layout_marginLeft="4dp"
android:layout_marginEnd="22dp"
android:layout_marginRight="22dp"
android:gravity="center"
android:textColor="#color/BlueColor"
android:textSize="16sp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toStartOf="#+id/deleteIconPhones"
app:layout_constraintStart_toEndOf="#+id/tutorIcon_cell"
app:layout_constraintTop_toTopOf="parent" />
<ImageView
android:id="#+id/deleteIconPhones"
android:layout_width="32dp"
android:layout_height="36dp"
android:layout_marginEnd="16dp"
android:layout_marginRight="16dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
I just need the custom view inside the listview to be in the center of the constraint layout. here is a Screenshot of the current state:
https://ibb.co/88KVQvq
desired state will be with the custom_item in the middle and not in the beginning of the constraintLayout:
https://ibb.co/XbtWJkw
custom_item snapshot:
https://ibb.co/rkDXmGs
Blueprint view of the viewpager in which this fragment is contained (Im trying to get the custom_item centered inside the viewpager's fragment):
https://ibb.co/XVR02Kq

If it is a custom_listView then Do change in the custom_layout.xml - (Whatever you gave the name of the layout) and check it again.

First of all, all these parameters in <ConstraintLayout ...> element are unnecessary:
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.0"
They don't have any meaning. Those parameters are used on elements inside ConstraintLayout, not on Layout itself. Layout fills all available space (in case of activity, it is whole screen), whatever layout are you using. Generally, just use match_parent/wrap_content in width/height, and that's it.
Secondly, based on your screen I cannot say where the ViewPager is located. It looks like ViewPager itself is left aligned in whole activity, but I am not sure. If it is, than it is the reason why everything squashed to left side. You can activate Developer Options on your device, then find and activate option Show Layout Bounds, than you will see on your screen borders of all rendered elements and see if this is the case.
Additionally, your item does not have very proper layout. If you want to chain these three elements, all of them should have all four layout_constraintXxx_toYyyOf elements. You can find it described here. I am not sure that this is the cause of your problem, but certainly is something that might cause the issue. Also, unless you really need to use ConstraintLayout, I would advise to use here LinearLayout, or even just plain text/button with drawableStart and drawableEnd set. It is documented on TextView class (Button is just a subclass of a TextView.)

moving items inside constraint layout cardview

This is my layout I am using for a activity.
<?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="com.example.phocast.AboutMeActivity">
<android.support.v7.widget.CardView
android:id="#+id/cv_abtme"
android:layout_width="369dp"
android:layout_height="260dp"
android:layout_marginBottom="8dp"
android:layout_marginEnd="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="101dp"
android:background="#color/colorPrimaryLight"
app:cardBackgroundColor="#color/bgcol_abtme"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.883">
<ImageView
android:id="#+id/imageView2"
android:layout_width="120sp"
android:layout_height="120sp"
app:srcCompat="#drawable/ic_face_black_24dp" />
<ImageView
android:id="#+id/iv1_abtme"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#id/tv_abtme"
app:srcCompat="#drawable/about_icon_facebook" />
<TextView
android:id="#+id/textView4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:fontFamily="serif-monospace"
android:lineSpacingExtra="12sp"
android:text="#string/facebook_id"
android:textSize="18sp" />
<TextView
android:id="#+id/tv_abtme"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:fontFamily="cursive"
android:text="#string/user_name"
android:textAppearance="#style/TextAppearance.AppCompat.Large"
android:textSize="36sp" />
</android.support.v7.widget.CardView>
....
</android.support.constraint.ConstraintLayout>
The output looks like:
The problem is I can't move the items inside the cardview either programatically or using drag in design view of android studio.
Like, for say, I want to have
Imageview iv1_abtme(the facebook icon) below the tv_abtme
textview4 horizentally aligned to iv1_abtme
etc.
Can anyone kindly help me on what is going wrong here(why I cant simply drag items)

CardView is based on a FrameLayout and the documentation there clearly says:
Generally, FrameLayout should be used to hold a single child view, because it can be difficult to organize child views in a way that's scalable to different screen sizes without the children overlapping each other. You can, however, add multiple children to a FrameLayout and control their position within the FrameLayout by assigning gravity to each child, using the android:layout_gravity attribute.
So, to solve your problem, your CardView needs to have a single child that is a view group for your views, such as LinearLayout, RelativeLayout, or ConstraintLayout.

Can't keep views from overlapping even when I use layout_margin

I can't figure out how to render my listItems correctly. Everything seems fine until the text title is too long. Looking at the pics below, I have the Title anchored on the left side of the listItem View and to the right of the imageView. I've even tried anchoring the right side to the right edge of the entire view but with no success. If the user enters a title too long the views overlap.
I want the title to be centered between the imageview and the left side of the entire listItem view. I have provided pics of how this all renders. Any help would be greatly appreciated. When the title gets long enough, it wraps the text which is fine. At this point I'd even settle for the trailing ... but I would prefer to have the text wrap. I just don't want to overlap the imageview. I have also posted the xml code
<?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="wrap_content"
android:orientation="vertical"
android:padding="5dp"
android:id="#+id/list_item_container">
<TextView
android:id="#+id/match_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAlignment="center"
android:textSize="16sp"
tools:text="Match Name"
app:layout_constraintTop_toTopOf="parent"
android:layout_marginTop="16dp"
app:layout_constraintRight_toLeftOf="#+id/imageView"
android:layout_marginRight="8dp"
android:layout_marginLeft="8dp"
app:layout_constraintLeft_toLeftOf="parent"/>
<TextView
android:id="#+id/match_date"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
tools:text="Match Date"
android:textAlignment="center"
android:layout_marginStart="8dp"
android:layout_marginEnd="8dp"
app:layout_constraintRight_toLeftOf="#+id/imageView"
android:layout_marginRight="8dp"
android:layout_marginLeft="8dp"
app:layout_constraintLeft_toLeftOf="parent"
android:layout_marginTop="8dp"
app:layout_constraintTop_toBottomOf="#+id/match_name"
app:layout_constraintBottom_toBottomOf="parent"
android:layout_marginBottom="8dp"/>
<ImageView
android:id="#+id/imageView"
android:layout_width="60dp"
android:layout_height="45dp"
android:layout_alignParentEnd="true"
android:layout_alignParentTop="true"
android:layout_marginEnd="8dp"
android:layout_weight="1"
app:srcCompat="#drawable/ic_more_vert_black_24dp"
app:layout_constraintTop_toTopOf="parent"
android:layout_marginTop="8dp"
android:layout_marginRight="68dp"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintBottom_toBottomOf="parent"
android:layout_marginBottom="8dp"
app:layout_constraintVertical_bias="0.484"/>
<TextView
android:id="#+id/match_id_hidden"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text=""
android:visibility="invisible"
tools:layout_editor_absoluteY="67dp"
tools:layout_editor_absoluteX="24dp"/>
</android.support.constraint.ConstraintLayout>

Inside the ConstraintLayout try to always use "0dp" for your heights and widths and always set the app:layout_constraint..._to...Of for all 4 sides for all your views. Examine the outcome and then fine tune to get the expected result. Do this in the XML instead of in the visual editor; in my experience it is quicker and it avoids the layout_editor_absolute... settings.

Set android:layout_width="0dp" for both your TextViews. In a ConstraintLayout, a value of "0dp" basically means match the constraints. A value of "wrap_content" doesn't take constraints into account when measuring the views, just when positioning them.

ImageView changes position in ConstraintLayout when reusing for RecyclerView

I have some issues regarding the new Constraint Layout.
I am using RecyclerView, and the layout for the item is based on a Constraint Layout with 2 TextViews and 1 ImageView inside it.
In the design view, from Android Studio, everything looks fine, but on the actual device (a S5 with Lineage OS), the ImageView changes its position in some activities.
If I scroll down, the items are how they are supposed to be and when scroll back up, everything goes back to normal.
I mention that I am reusing the same layout file for 3 fragments with Recycler view.
This is the layout for 1 list item.
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/cont_item_root"
android:layout_width="match_parent"
android:layout_height="72dp"
android:background="#drawable/bottom_border"
android:paddingRight="16dp"
android:paddingTop="8dp"
android:paddingBottom="8dp"
android:paddingEnd="16dp"
android:paddingStart="16dp"
android:paddingLeft="16dp">
<TextView
android:id="#+id/lbl_item_title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="8dp"
android:layout_marginTop="0dp"
android:gravity="center"
android:text="wqewqwewqeqw"
android:textColor="#android:color/black"
android:textSize="16sp"
app:layout_constraintBottom_toTopOf="#+id/lbl_item_desc"
app:layout_constraintHorizontal_bias="0.008"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="1.0" />
<TextView
android:id="#+id/lbl_item_desc"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"
android:textSize="14sp"
android:text="weqweweqweweqeweqwe"
android:layout_marginRight="0dp"
android:layout_marginEnd="72dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="#+id/lbl_item_title"
android:layout_marginBottom="7dp"
app:layout_constraintRight_toRightOf="#+id/lbl_item_title"
app:layout_constraintHorizontal_bias="0.0"/>
<ImageView
android:id="#+id/lbl_item_save"
android:contentDescription="#string/bookmarked"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/ic_star_border_black_24dp"
android:layout_marginEnd="8dp"
app:layout_constraintTop_toTopOf="parent"
android:layout_marginTop="8dp"
app:layout_constraintBottom_toBottomOf="parent"
android:layout_marginBottom="8dp"
android:layout_marginStart="8dp"
android:layout_marginRight="24dp"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintLeft_toRightOf="#+id/lbl_item_desc"
android:layout_marginLeft="8dp"
app:layout_constraintHorizontal_bias="1.0" />
On the phone, in the first fragment, everything is fine, no matter in which order I open it. But if I open the second or the third fragment, things are getting messed up.
Does anybody know what could influence the ImageView (the star) to move?
Thank you!

Found out the answer.
The parent layout, that was containing the RecyclerView, was using Constraint Layout as well, and it seems that there were some conflicts between them.
After changing the root layout to RelativeLayout or LinearLayout, everything went back to normal.