Android findViewById returning null

Question

I'm using a button to call a method that just places input text into a textview. Whenever I use findViewById, it returns null.

public void encode(View view){
  TextView out = (TextView) view.findViewById(R.id.encoderout);
  EditText in = (EditText) view.findViewById(R.id.encoderin);
  out.setText(in.getText().toString());
  out.setTypeface(font);
}

My xml is here

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
          android:orientation="vertical"
          android:layout_width="fill_parent"
          android:layout_height="fill_parent"
    >
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/input"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_weight="1"
    >
    <EditText android:id="@+id/encoderin"
        android:layout_width="0dp"
        android:layout_weight="2"
        android:layout_height="wrap_content"
        android:hint="Text to encode"/>
    <Button android:id="@+id/encoderbutton"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:onClick="encode"
        android:text="Encode!"/>
</LinearLayout>
<TextView android:id="@+id/encoderout"
    android:text="test"
    android:layout_width="fill_parent"
    android:layout_weight="1"
    android:gravity="center"
    android:layout_height="wrap_content"/>
</LinearLayout>

Almost every post I could find said that cleaning the project helped solve the problem but not in this case.

EDIT: ADDITIONAL INFO

I'm using Fragments, and this is my fragment code

public static class Encoder extends Fragment{
  public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    View view = inflater.inflate(R.layout.encoder, container, false);       
    return view;
  }
}

It's calling up into the Activity because of the way buttons work. I can call the find methods fine in the fragment, but not when I have to go back to the activity.

I can verify the view is not null, it prints out fine when the toString is called in the method.

Solution: Never realized that I had to use the main view, thought I was SUPPOSE to use the button view. I'm very new to this (started today) thankyou everyone for the input!

Answer 1

<Button android:id="@+id/encoderbutton"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:onClick="encode"
    android:text="Encode!"/>

The parameter view in callback method encode(View view) in the Java code is supplied with the Button view itself but not the Activity.

See Reference below:

http://developer.android.com/reference/android/widget/Button.html

Answer 2

Fragments don't receive onClicks methods that are declared in the XML. You need to define encode in your Activity instead, then direct the desired behavior to the appropriate Fragment. Annoying, but that's the way it's done. I suggest you just implement the OnClickListener programatically in your Fragment code to avoid intertwining the behavior of your fragment and activity.