Add a submenu in an Android Keyboard?-CodePudding

I'm trying to create a custom Android Keyboard, just trying to learn the process.

I've been relatively successful, as I'm just learning the basics for now:

My question is, how can I achieve this effect from the usual keyboard in which I keep a key pressed and a list of more options will pop up?

Any help is appreciated.

CodePudding user response：

Just for someone in the future that might need this, the main method to do it is using xml keyboards:

<?xml version="1.0" encoding="utf-8"?>
<Keyboard xmlns:android="http://schemas.android.com/apk/res/android"
    android:keyWidth="10%p"
    android:horizontalGap="4px"
    android:verticalGap="4px"
    android:keyHeight="45dp">

    <Row>
        <Key android:keyLabel="q" android:popupKeyboard="@xml/qwerty_q" android:keyEdgeFlags="left"/>
        <Key android:keyLabel="w" android:popupKeyboard="@xml/qwerty_w"/>
        <Key android:keyLabel="e" android:popupKeyboard="@xml/qwerty_e"/>
        <Key android:keyLabel="r" android:popupKeyboard="@xml/qwerty_r"/>
        <Key android:keyLabel="t" android:popupKeyboard="@xml/qwerty_t"/>
        <Key android:keyLabel="y" android:popupKeyboard="@xml/qwerty_y"/>
        <Key android:keyLabel="u" android:popupKeyboard="@xml/qwerty_u"/>
        <Key android:keyLabel="i" android:popupKeyboard="@xml/qwerty_i"/>
        <Key android:keyLabel="o" android:popupKeyboard="@xml/qwerty_o"/>
        <Key android:keyLabel="p" android:popupKeyboard="@xml/qwerty_p"/>
    </Row>
</Keyboard>

Then create every relevant keyboard under the folder "xml", with xml formatting:

Formatting within the pop-up keyboard:

<?xml version="1.0" encoding="utf-8"?>

<Keyboard
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:keyWidth="10%p"
    android:horizontalGap="4px"
    android:verticalGap="4px"
    android:keyHeight="40dp">

    <Row android:gravity="center_horizontal">
        <Key android:keyLabel="s" android:keyEdgeFlags="left"/>
        <Key android:keyLabel="ſ"/>
        <Key android:keyLabel="ƨ"/>
        <Key android:keyLabel="ß"/>
        <Key android:keyLabel="σ"/>
        <Key android:keyLabel="ς"/>
    </Row>
</Keyboard>

There is an option as well to add pop-up characters, but I'm not sure if that support entering full strings, which you might want to if needing to input ".com", ".net", &c.

<?xml version="1.0" encoding="utf-8"?>

<Keyboard
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:keyWidth="10%p"
    android:horizontalGap="4px"
    android:verticalGap="4px"
    android:keyHeight="40dp">

    <Row android:gravity="center_horizontal">
        <Key android:keyLabel=".com" android:keyOutputText=".com">
        <Key android:keyLabel=".net" android:keyOutputText=".net">
        <Key android:keyLabel=".jpg" android:keyOutputText=".jpg">
        <Key android:keyLabel="·e·" android:keyOutputText="·e·"/>
    </Row>
</Keyboard>