Can you change the android keyboard text font programmatically?

Question

To be frank the title says it all really, I'm trying to change an input method service, KeyboardView key font. Of course.. it's not as simple as

android:keyTextFont="sans-serif".

Have a look at [this][1] and [this][2]. Should solve your problem! [1]: http://stackoverflow.com/a/4949412/4127441 [2]: http://stackoverflow.com/a/11718016/4127441 — rgv, Jul 08 '15 at 20:27

Ankush Bist · Accepted Answer · 2017-02-02T11:42:40.580

import java.lang.reflect.Field; 
import android.content.Context;
import android.graphics.Typeface;

public final class FontsOverride {

public static void setDefaultFont(Context context,
        String staticTypefaceFieldName, String fontAssetName) {
    final Typeface regular = Typeface.createFromAsset(context.getAssets(),
            fontAssetName);
    replaceFont(staticTypefaceFieldName, regular);
}

protected static void replaceFont(String staticTypefaceFieldName,
        final Typeface newTypeface) {
    try {
           final Field staticField = Typeface.class
                .getDeclaredField(staticTypefaceFieldName);
           staticField.setAccessible(true);
           staticField.set(null, newTypeface);
        } catch (NoSuchFieldException e) {
          e.printStackTrace();
        } catch (IllegalAccessException e) {
        e.printStackTrace();
    }
  }
}

add this class to your code.

public final class Application extends android.app.Application {
@Override
public void onCreate() {
    super.onCreate();
    FontsOverride.setDefaultFont(this, "DEFAULT", "fonts/GeezEdit.ttf");
    FontsOverride.setDefaultFont(this, "MONOSPACE", "fonts/GeezEdit.ttf");
    /*FontsOverride.setDefaultFont(this, "MONOSPACE", "MyFontAsset2.ttf");
    FontsOverride.setDefaultFont(this, "SERIF", "MyFontAsset3.ttf");
    FontsOverride.setDefaultFont(this, "SANS_SERIF", "MyFontAsset4.ttf");*/
  }
}

..... here you can see that the some fonts/fontname are added. These are the external font files which you can use to overrite into your keyboard view/labels.

add this Application name into the android manifest file application name

example

 <application
    android:name=".Application"
    android:allowBackup="false"
    android:installLocation="internalOnly"
    android:label="@string/ime_name"
    android:theme="@style/AppTheme" >.......

now update the above overrited font name into your style. base theme or the theme which you are using at your manifest application.

example

 <!-- Application theme. -->
<style name="AppTheme" parent="AppBaseTheme">
    <item name="android:typeface">monospace</item>
</style>

score 0 · Answer 2 · edited May 23 '17 at 11:53

0

Yes, it can be done pragmatically by overriding KeyboardView's onDraw() method.

Here is an example of someone adding text above keys: Customize the appearance of a <Key>

To change text font code would be something like this:

public class MyKeyboardView extends KeyboardView {
@Override
public void onDraw(Canvas canvas) {
    Paint paint = new Paint();
    paint.setTextAlign(Paint.Align.CENTER);
    Typeface font = Typeface.createFromAsset(context.getAssets(),
        "fonts/Hippie.otf"); //Insert your font here.
    paint.setTypeface(font);

    List<Key> keys = getKeyboard().getKeys();
    for(Key key: keys) {
        if(key.label != null)
            canvas.drawText(key.label.toString(), key.x, key.y, paint);
        }
    }
}

Code not tested

edited May 23 '17 at 11:53

Community

1
1

answered Jul 08 '15 at 20:41

Phillip

255
1
12

Sorry I'd like to re-iterate, I\m explicitly using InputMethodService, for which there isn't an override of onDraw instead there's just onCreateInputView which cannot take Canvas canvas. – Mike Armstrong Jul 09 '15 at 14:33
Are you inflating a KeyboardView within the onCreateInputView? – Phillip Jul 09 '15 at 16:34

score 0 · Answer 3 · answered Nov 26 '15 at 10:04

You have to create a new class that extends KeyboardView.

package com.example.xyz;
...
...
public class CustomKeyboardView extends KeyboardView{
    @Override
    public void onDraw(Canvas canvas) {
        Paint mPaint = new Paint();
            mPaint.setTextAlign(Paint.Align.CENTER);
            mPaint.setTextSize(40);
            mPaint.setColor(Color.BLACK);

            Typeface font = Typeface.createFromAsset(mContext.getAssets(),"normal_font.ttf");
            mPaint.setTypeface(font);

            if (key.label != null) {
                String keyLabel = key.label.toString();
                if (caps) {
                    keyLabel = keyLabel.toUpperCase();
                }
                canvas.drawText(keyLabel, key.x + (key.width / 2),
                        key.y + (key.height / 2) , mPaint);
            } else if (key.icon != null) {
                key.icon.setBounds(key.x, key.y, key.x + key.width, key.y + key.height);
                key.icon.draw(canvas);
            }
    }
}

Where the .ttf file is the font file from the Assets folder of your project.

Now, in the keyboard layout (.xml) file, replace the <KeyboardView/> with <com.example.xyz.CustomKeyboardView/>

Can you change the android keyboard text font programmatically?

3 Answers3

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