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!
<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