Text size within an PreferenceScreen

Question

I have xml file that defines some preference screens like the following example

Answer 1

You can simply add android:textSize inside your theme for preference screen:

e.g :

Your SettingsActivity class :

public class SettingsActivity extends AppCompatActivity {
private Toolbar toolbar;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_settings);

    toolbar = (Toolbar)findViewById(R.id.toolbar_settings);
    setSupportActionBar(toolbar);
    getSupportActionBar().setDisplayHomeAsUpEnabled(true);
    getSupportFragmentManager().beginTransaction()
            .replace(R.id.bodylayout, new PrefsFragment())
            .commit();


}

@Override
protected void onPause() {
    super.onPause();
}
}

PrefsFragment class :

public class PrefsFragment extends PreferenceFragmentCompat implements SharedPreferences.OnSharedPreferenceChangeListener {

    @Override
    public void onCreatePreferences(Bundle bundle, String s) {

    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        final Context myContext = this.getActivity();
    //set your theme
        myContext.setTheme(R.theme.settingsTheme);

        super.onCreate(savedInstanceState);
        addPreferencesFromResource(R.xml.settingspreference);
    //do other stuffs
        }
    //.....
        }