FindViewById returns null for action_bar_title

Question

I tried to set my own font in the ActionBar header: How to set a custom font in the ActionBar header? . So, in Activity onCreate:

int titleId = getResources().getIdentifier("action_bar_title", "id", "android");
TextView yourTextView = (TextView) findViewById(titleId);
yourTextView.setTextColor(getResources().getColor(R.color.black));
yourTextView.setTypeface(face);

but findViewByIdreturns null. Why?

I use the support library:

import android.support.v7.app.ActionBarActivity;

Answer 1

It seems to be broken in Lollipop. I don't know if there is a better alternative, but you can do something like this if you use the toolbar:

import android.content.Context;
import android.support.v7.widget.Toolbar;
import android.util.AttributeSet;
import android.view.Gravity;
import android.view.View;
import android.widget.TextView;

import org.apache.commons.lang3.reflect.FieldUtils;

public class MyToolbar extends Toolbar {

    protected TextView mmTitleTextView;

    public MyToolbar(Context context) {
        super(context);
    }

    public MyToolbar(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public MyToolbar(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
    }

    // API

    public TextView getTitleTextView() {
        if (mmTitleTextView == null) {
            try {
                mmTitleTextView = (TextView) FieldUtils.readField(this, "mTitleTextView", true);
            } catch (IllegalArgumentException e) {
                e.printStackTrace();
            } catch (IllegalAccessException e) {
                e.printStackTrace();
            }
        }

        return mmTitleTextView;
    }
}

And about your activity:

private MyToolbar mActionBarToolbar;
protected Toolbar getActionBarToolbar() {
    if (mActionBarToolbar == null) {
        mActionBarToolbar = (FWToolbar) findViewById(R.id.toolbar_actionbar);
        if (mActionBarToolbar != null) {
            setSupportActionBar(mActionBarToolbar);
        }
    }
    return mActionBarToolbar;
}
@Override
public void setContentView(int layoutResID) {
    super.setContentView(layoutResID);

    getActionBarToolbar();
}
protected void onPostCreate(Bundle savedInstanceState) {
    super.onPostCreate(savedInstanceState);

    if (mActionBarToolbar != null) {
        Typeface typeface = Typeface.createFromAsset(c.getAssets(), "fonts/font.ttf");
        mActionBarToolbar.getTitleTextView().setTypeface(typeface);
    }
}

Answer 2

, . : ActionBar View Lollipop

TextView, , TextView , :

Toolbar toolbar = (Toolbar) findViewById(R.id.action_bar);
TextView textView = (TextView) toolbar.getChildAt(0);