Change Android System Font programmatically

Question

I am working on an android app and is clueless about how I can change the default font on android. I don't want to root the system in order to change the font. The font must be changed throughout the system.

you might be searching for this : http://stackoverflow.com/questions/2711858/is-it-possible-to-set-a-custom-font-for-entire-of-application — Astyan, Mar 03 '17 at 15:38

score 1 · Answer 1 · answered Sep 18 '14 at 18:46

The only problem with setTypeface() is that, if you want it app wide, you have to utilize it with every view. This either means tons of redundant code or writing custom view classes that set the font on inflation. OR you can use these two nifty little methods within a helper class to set your applications fonts via reflection:

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();
    }
}

Then to set a font do something like MyHelperClass.setDefaultFont(this, "DEFAULT", "fonts/FONT_NAME.ttf");

That will set your default font for your app to your FONT_NAME.ttf font file.

score 0 · Answer 2 · answered Sep 18 '14 at 18:38

0

you can put your custom font in assets/fonts

it neds to end with .ttf extension and than

Typeface tf = Typeface.createFromAsset(getContext().getAssets(),
        "fonts/yourFont.ttf");
    setTypeface(tf);

answered Sep 18 '14 at 18:38

Kiloreux

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score 0 · Answer 3 · answered Sep 18 '14 at 18:42

0

Create assets/fonts

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Example code:

  number_text = (TextView)findViewById(R.id.hour_progress_number);
  number_text.setTypeface(Typeface.createFromAsset(getAssets(), "fonts/roboto-thin.ttf"));

  minute_text = (TextView)findViewById(R.id.minute_progress_number);
  minute_text.setTypeface(Typeface.createFromAsset(getAssets(), "fonts/roboto-thin.ttf"));

answered Sep 18 '14 at 18:42

Rohit Tigga

2,373
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1

The answer is that you cannot do this. Applications don't have access to that part of the system (without, as you said, root access). – Kevin Coppock Sep 18 '14 at 20:54
2

are you sure about that? – Rohit Tigga Sep 19 '14 at 02:49

Change Android System Font programmatically

3 Answers3