通过首选项更改文本大小

Question

I was wondering if anyone could help me with a question.

How would I change the text size of a textView depending on preferences? within my preferences I have a radiogroup and would like the text size to change based on which radio button is checked. I have came up with the following but this does not work.

SharedPreferences getData = PreferenceManager.getDefaultSharedPreferences(getBaseContext());
    String values = getData.getString("list", "4");

    if (values.contentEquals("1")){
        tv1.setTextSize(20);
    }

The following is for the menu I want to change:

setListAdapter(new ArrayAdapter<String>(MainMenu.this, R.layout.mylist, classes));

Answer 1

probably you didn't declare the list parameter right in your SharedPreferences .

My bet is that getString return 4 because "list" doesn't has a value.

so what heppens if you change to:

 if (values.contentEquals("4")){
        tv1.setTextSize(20);
    }