How do I create a custom Android keyboard with numbers-only?

Question

I need to create a custom keyboard containing numbers only.
But all the tutorials I found are about regular keyboards (qwerty).

I need a layout like this, but I don't know where to even start with it.

Note, that just using the numbers or phone input method for my editTexts won't do.

Or you can just make your own buttons and layout below the PIN edit text with the numbers. — HendraWD, Dec 05 '16 at 16:02
"Note, that just using the numbers or phone input method for my editTexts won't do" -- creating a custom input method editor will not help you, then, as the user does not have to use your custom input method editor when typing into your `EditText` widgets. It sounds like this should not be an `EditText` at all, but, as HendraWD suggests, just a set of buttons, which you use to populate a `TextView` as visual feedback. — CommonsWare, Dec 05 '16 at 16:03
@shuvro I tried that, but it didn't work for unknown reasons — keinabel, Dec 05 '16 at 16:14
@bigdestroyer I did, but there are only tutorials for qwerty keyboards. And I think I need some way to use GridLayout to achieve this kind of keyboard. — keinabel, Dec 05 '16 at 16:15

score 1 · Answer 1 · answered Dec 08 '16 at 21:56

I did it basically like in this tutorial:

https://code.tutsplus.com/tutorials/create-a-custom-keyboard-on-android--cms-22615

But replaced the qwerty.xml code with this

<Keyboard xmlns:android="http://schemas.android.com/apk/res/android"
android:keyWidth="23.4375%p"
android:keyHeight="10%p" >

<Row>
    <Key android:codes="49"    android:keyLabel="1"  android:keyEdgeFlags="left" />
    <Key android:codes="50"    android:keyLabel="2" />
    <Key android:codes="51"    android:keyLabel="3" />
    <Key android:codes="-5"     android:keyLabel="Del" android:isRepeatable="true" android:horizontalGap="6.25%p" android:keyEdgeFlags="right"/>
</Row>
<Row>
    <Key android:codes="52"    android:keyLabel="4" android:keyEdgeFlags="left"  />
    <Key android:codes="53"    android:keyLabel="5" />
    <Key android:codes="54"    android:keyLabel="6" android:keyEdgeFlags="right"/>
</Row>
<Row>
    <Key android:codes="55"    android:keyLabel="7" android:keyEdgeFlags="left" />
    <Key android:codes="56"    android:keyLabel="8" />
    <Key android:codes="57"    android:keyLabel="9" android:keyEdgeFlags="right"/>
    <Key android:codes="-2"  android:keyLabel="123" android:horizontalGap="6.25%p"/>
</Row>
<Row>
    <Key android:codes="0"  android:keyLabel="ABC" android:keyEdgeFlags="left" />
    <Key android:codes="46"    android:keyLabel="."/>
    <Key android:codes="48"    android:keyLabel="0" />
    <Key android:codes="10" android:keyLabel="Ent" android:horizontalGap="6.25%p" android:keyEdgeFlags="right" />
</Row>

123 and ABC is just navigating between other keyboards. Delete them if not needed.

score 0 · Accepted Answer · answered Dec 05 '16 at 17:04

I now went for using no keyboard and using GridLayout instead.

<GridLayout
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentBottom="true"
    android:layout_alignParentEnd="true"
    android:layout_alignParentLeft="true"
    android:layout_alignParentRight="true"
    android:layout_alignParentStart="true"
    android:layout_gravity="center"
    android:columnCount="3"
    android:orientation="horizontal"
    android:weightSum="3">

    <Button
        android:layout_columnWeight="1"
        android:text="1" />

    <Button
        android:layout_columnWeight="1"
        android:text="2" />

    <Button
        android:layout_columnWeight="1"
        android:text="3" />

    <Button
        android:layout_columnWeight="1"
        android:text="4" />

    <Button
        android:layout_columnWeight="1"
        android:text="5" />

    <Button
        android:layout_columnWeight="1"
        android:text="6" />

    <Button
        android:layout_columnWeight="1"
        android:text="7" />

    <Button
        android:layout_columnWeight="1"
        android:text="8" />

    <Button
        android:layout_columnWeight="1"
        android:text="9" />

    <Button
        android:layout_columnWeight="1"
        android:layout_column="1"
        android:text="0" />
</GridLayout>

How do I create a custom Android keyboard with numbers-only?

2 Answers2