I recently started using Android Studio because I wanted to create an app for my Android device.
I chose the bottom navigation activity as a template and added a spinner. I put the spinner in the highest possible position under the page title, but when I launch the app from debugging on my Android 10 phone, there is a large white space between my spinner and my page title. But there isn’t any in the preview.
I have a Xiaomi Redmi Note 8T Global if that matters.
My fragment 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="match_parent"
tools:context=".ui.myfragment.MyFragment"
tools:layout_editor_absoluteY="81dp">
<Spinner
android:id="@+id/myspinner"
android:layout_width="391dp"
android:layout_height="wrap_content"
android:minHeight="48dp"
android:spinnerMode="dropdown"
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"
tools:ignore="SpeakableTextPresentCheck" />
</androidx.constraintlayout.widget.ConstraintLayout>
Preview in the android studio
what it looks like in the app
Thank’s in advance
5
Answers
I looked into my MainActivity.xml file and there was a line of Code:
android:paddingTop="?attr/actionBarSize">
just remove it and no more white bar!Credits to franvillacis, who made me look again into my MainActivity.xml
Try removing
tools:layout_editor_absoluteY="81dp"
from your constraintLayout.Absolute layout lets you specify exact locations (x/y coordinates) of its children.
Remove below lines from your code to solve the issue::
tools:layout_editor_absoluteY="81dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintVertical_bias="0.0"
Try this to solve the issue::
It generally works alike it is (without the messy preview settings):
While the actual difference is, that the Activity has a different theme than the XML preview. The one theme has an
ActionBar
– and the other one doesn’t (some.NoActionBar
theme). So you may want to apply the same theme inAndroidManifest.xml
, which you use for the the XML preview.