用于 EditText 的具有数字和基本数学运算的键盘

Question

How I can have this keyboard

for an EditText?

I tried with InputType but I could not have this keyboard.

I have created this example that shows the answers are not solving the problem:

<?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=".MainActivity">

    <com.google.android.material.textfield.TextInputLayout
        android:id="@+id/textInputLayout"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:layout_constraintTop_toTopOf="parent">

        <!--number-->
        <com.google.android.material.textfield.TextInputEditText
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:hint="hint"
            android:inputType="number" />
    </com.google.android.material.textfield.TextInputLayout>

    <!--numberDecimal|numberSigned-->
    <EditText
        android:id="@+id/editText"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:ems="10"
        android:inputType="numberDecimal|numberSigned"
        android:digits="0123456789.+-*/%()"
        app:layout_constraintTop_toBottomOf="@+id/textInputLayout" />

    <!--numberPassword-->
    <EditText
        android:id="@+id/editText2"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:ems="10"
        android:inputType="numberPassword"
        app:layout_constraintTop_toBottomOf="@+id/editText" />

</androidx.constraintlayout.widget.ConstraintLayout>

the resulted keyboards for the first two input types are same and they are like:

and the last one is like:

Answer 1

You can use this for displaying only numbers:

<EditText
        android:id="@+id/editTextNumber"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:inputType="number" />

Or use this for displaying numbers when you use the EditText for Passwords:

<EditText
        android:id="@+id/editText"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:inputType="numberPassword" />

Please also understand that mostly every phone has another keyboard design, so you may not get the exact keyboard you mentioned in you picture

Answer 2

use this

<EditText
        android:id="@+id/editText3"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:inputType="number" />