How to change fragment's textView's text from activity

Question

I cannot find how to change fragment's `textview` from an `Activity`. I have 4 files : ``` MainActivity.java activity_main.xml FragmentClass.java frag_class.xml ``` frag_class.xml has textView, I want to change the text from MainActivity.java. FragmentClass extends Fragment, this fragment is displayed in MainActivity FragmentClass has: ``` public void changeText(String text){ TextView t = (TextView) this.getView().findViewById(R.id.tView); t.setText(text); } ``` and in MainActivity I tried this: ``` FragmentClass fc = new FragmentClass(); fc.changeText("some text"); ``` But sadly this code gives me NullPointerException at `fc.changeText("some text");` I've also tried changing the text directly from MainActivity with: ``` TextView t = (TextView) this.getView().findViewById(R.id.tView); t.setText(text); ``` which Failed. [EDIT] The full code is here

Accepted Answer

@Lalit answer is correct but I see that you dont need to create a function like fragment_obj.updateTextView();. I set all my view as class level objects and was able to update the textview directly.

```
fragmentRegister.textViewLanguage.setText("hello mister how do you do");
```

Note: If you need to perform more than one action then having a function is the way to go.

How to change fragment's textView's text from activity

Solution

Problem