Reference all textviews

Question

I am trying to set the size of ALL text views in my app to a certain size.

    public void rbFontClicked(View view) {
        // Is the button now checked?
        boolean checked = ((RadioButton) view).isChecked();

        // Check which radio button was clicked
        switch(view.getId()) {
            case R.id.rbsmall:
                if (checked)
                    //eveysingletextview.setTextSize(12)
                    everysingleedittext.setTextSize(12)
                break;

            case R.id.rbmedium:
                if (checked)
                    // do nothing
                break;

            case R.id.rblarge:
                if (checked)
                    // set dimension to large font,
                break;

How would I go about referencing all the textviews? I need to do it for Edittexts aswell, so I don't want to individually reference each view, it would take forever.

TIA.

you want to retrieve all the view in the current hierarchy and check if those are textview or edittext, have I understood correctly? — Blackbelt, Nov 04 '13 at 15:58
You can use style XML files to define your view appearance properties (such as text size). See the following related SO question: http://stackoverflow.com/questions/3078081/setting-global-styles-for-views-in-android and also the Android documentation: http://developer.android.com/guide/topics/ui/themes.html — tiguchi, Nov 04 '13 at 16:13
Well the idea is that the user clicks a radio button and it changes the font for all of the application to large, medium, or small. I should really have put that in the question. — Daniel o Keeffe, Nov 04 '13 at 16:15

score 1 · Accepted Answer · answered Nov 04 '13 at 16:01

1

int size = 10;
switch(view.getId()) {
            case R.id.rbsmall:
                if (checked)
                   size = 12;
                break;  

// other case

}

  ViewGroup root = (ViewGroup) findViewById(R.id.rootLayout);
  int children = root.getChildCount();
  for (int i = 0; i < children; i++) {
      View view  = root.getChildAt(i);
      if (view instanceOf TextView) {
        TextView tmp = (TextView)view;
        view.setText(size);
      }
  }

It is not elegant but it should work. Check for typo

answered Nov 04 '13 at 16:01

Blackbelt

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I understand that this will change all the text views to the size, and another if statement can be put it for edittexts. Is it just a case of findViewById(R.id.other_layout) for x amount of layouts to change it for the whole application, not just the current layout?? – Daniel o Keeffe Nov 04 '13 at 16:07
My assignment id due at midnight tonight - Don't worry about elegence:) – Daniel o Keeffe Nov 04 '13 at 16:08
just for the current layout of course. But you can think to create a static method and call it when you change activity. Imo this approch is wrong. YOu should use styles for those situation. – Blackbelt Nov 04 '13 at 16:16
Ok, i think I have enough to work with. I'm still new to android. I'm going to try and repeat the viewgroup 5 times within the if statements to change the text and edittext views.Don't see any reason at the moment why it won't work,just might be a bit messy. The idea is that the users can select a radion button to change the fontsize,fontcolour and background colour. I don't really understand how that would work using a static method when changing activity. Anyway thanks this is pretty much what i wanted. (y) – Daniel o Keeffe Nov 04 '13 at 16:28

Reference all textviews

1 Answers1