Keyboard beeing shown when pressing tab before button - android-studio

Question

I'm very new to Android studio, and i'm trying to build a simple app that when I click a button, it does some calculations. The problem is that when I press tab on the last EditText before the button, the button become focused and a keyboard is shown, I just want the button to remain unfocusable so when the user input every necessary data, he can just click the button
What I tried is setting the property focusable and focusableInTouchMode to false but none of them seem to work and I havent found no other option that made sense for me.
What can I do to stop this behaviour?
Edit:
Manifest file:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.rodolfo.trekking">
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:roundIcon="#mipmap/ic_launcher_round"
android:supportsRtl="true"
android:windowSoftInputMode="stateHidden"
android:theme="#style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN"/>
<category android:name="android.intent.category.LAUNCHER"/>
</intent-filter>
</activity>
</application>
</manifest>
Edit 2:
XML Layout:
ersion="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<EditText
android:layout_width="wrap_content"
android:layout_height="0dp"
android:inputType="number"
android:ems="10"
android:id="#+id/edTempo"
android:importantForAutofill="no"
android:layout_marginTop="8dp"
app:layout_constraintTop_toBottomOf="#+id/textView3" android:layout_marginStart="8dp"
app:layout_constraintStart_toStartOf="#+id/textView" android:layout_marginEnd="8dp"
app:layout_constraintEnd_toEndOf="#+id/textView"/>
<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:inputType="number"
android:ems="10"
android:id="#+id/edTrecho"
android:importantForAutofill="no"
android:layout_marginTop="8dp"
app:layout_constraintTop_toBottomOf="#+id/textView2" android:layout_marginStart="8dp"
app:layout_constraintStart_toStartOf="#+id/btCalcular" android:layout_marginEnd="8dp"
app:layout_constraintEnd_toEndOf="#+id/btCalcular"/>
<EditText
android:layout_width="wrap_content"
android:layout_height="0dp"
android:inputType="number"
android:ems="10"
android:id="#+id/edVelocidade"
android:importantForAutofill="no"
android:layout_marginTop="8dp"
app:layout_constraintTop_toBottomOf="#+id/textView" android:layout_marginStart="8dp"
app:layout_constraintStart_toStartOf="parent" android:layout_marginEnd="8dp"
app:layout_constraintEnd_toEndOf="parent"/>
<TextView
android:text="#string/velocidade"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/textView"
android:layout_marginTop="64dp"
app:layout_constraintTop_toBottomOf="#+id/edTempo" app:layout_constraintStart_toStartOf="#+id/textView2"
app:layout_constraintEnd_toEndOf="#+id/textView2"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/textView2"
android:text="#string/trecho"
app:layout_constraintStart_toStartOf="#+id/edTrecho"
app:layout_constraintEnd_toEndOf="#+id/edTrecho" android:layout_marginTop="8dp"
app:layout_constraintTop_toBottomOf="#+id/edVelocidade"/>
<TextView
android:text="#string/tempo"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/textView3"
android:layout_marginTop="8dp"
app:layout_constraintTop_toTopOf="parent" app:layout_constraintStart_toStartOf="#+id/edTempo"
app:layout_constraintEnd_toEndOf="#+id/edTempo"/>
<Button
android:text="#string/calcular"
android:layout_width="210dp"
android:layout_height="42dp"
android:id="#+id/btCalcular" app:layout_constraintStart_toStartOf="parent" android:layout_marginStart="8dp"
app:layout_constraintEnd_toEndOf="parent" android:layout_marginEnd="8dp"
tools:text="#string/calcular" android:layout_marginTop="84dp"
app:layout_constraintTop_toBottomOf="#+id/edTrecho" app:layout_constraintHorizontal_bias="0.487"
android:focusableInTouchMode="false"
style="#style/Widget.AppCompat.Button" android:autoText="false" android:editable="false"/>
</android.support.constraint.ConstraintLayou
t>

Answer 1

Set this in your manifest file
android:windowSoftInputMode="stateHidden"