layout_gravity isn't working as expected - just partially

I have the following layout:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">

<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">

<LinearLayout
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content">

<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="start"
android:text="@string/title_day"
android:textStyle="bold"
android:textSize="20sp" />

<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="start"
android:text="Tuesday"
android:textSize="16sp" />

</LinearLayout>

<TextView
android:id="@+id/tv_fail"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="+22"
android:textSize="16sp"
android:layout_gravity="end|center_vertical" />

</LinearLayout>

</LinearLayout>


And this looks like this:

And I want the last TextView with id tv_fail to be pinned to right end of screen. I suppose that

tv_fail

android:layout_gravity="end|center_vertical"


should handle it, but this instruction centers TextView vertically, but doesn't move it to end. How to fix it?

2 Answers
2

I suppose that

android:layout_gravity="end|center_vertical"


should handle it, but this instruction centers TextView vertically, but doesn't move it to end.

This is due to how LinearLayout works; your understanding of layout_gravity is generally correct.

LinearLayout

layout_gravity

LinearLayout takes its children and lays them out in a line, and the children will all be packed towards the "start" of the LinearLayout. In other words, a horizontal LinearLayout will ignore the horizontal component of the layout_gravity attribute of a child.

layout_gravity

There are a few ways to work around this. The one that I think works best for your scenario is to make the TextView stretch to fill all the remaining space in the LinearLayout (using layout_weight), and then have the TextView position its text at the end of its content area (using gravity).

layout_weight

gravity

<TextView
android:id="@+id/tv_fail"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="+22"
android:textSize="16sp"
android:layout_gravity="center_vertical"
android:gravity="end"/>


layout_gravity

layout_gravity

If you just want to set text inside of your last TextView to end then you should use :

text

TextView

android:gravity="end"


for TextView gravity use:

TextView

android:layout_gravity="center"


Difference between android:gravity & android:layout_gravity is that first one arrange content inside of any view with given gravity while second one arranges view according to given gravity.

android:gravity

android:layout_gravity

Updated code:

<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">

<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:orientation="vertical">

<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="start"
android:text="title_day"
android:textSize="20sp"
android:textStyle="bold" />

<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="start"
android:text="Tuesday"
android:textSize="16sp" />

</LinearLayout>

<TextView
android:id="@+id/tv_fail"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="+22"
android:textSize="16sp" />

</LinearLayout>


LinearLayout

ConstraintLayout

ConstraintLayout

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