Butterknife Fragment Button not working

Question

I have a Fragment that I am using Butterknife with.

public class FooFragment extends Fragment {
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.foo, container, false);

        ButterKnife.inject(this, view);

        return view;
    }

    @OnClick(R.id.some_btn)
    public void someButtonOnClick() {
        // do something
    }
}

However, the someButtonOnClick method is never called when the button is tapped on the screen.

Thoughts on what I am doing wrong with the Butterknife framework?

Here is the layout that is being used:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:background="@color/White">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">

        <Button
            android:id="@+id/some_btn"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:layout_margin="@dimen/xsmall_margin"
            android:background="@drawable/some_btn_selection" />

        <Button
            android:id="@+id/some_other_btn"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:layout_margin="@dimen/xsmall_margin"
            android:background="@drawable/some_other_btn_selection" />
    </LinearLayout>
</LinearLayout>

Answer 1

For latest ButterKnife 8.0.1 June -2016

InjectView and inject has been replaced with BindView and bind This are the steps to follow:-

down vote unaccept From the Butterknife github page:

Add this to you project-level build.gradle:

buildscript {
  repositories {
    mavenCentral()
   }
  dependencies {
    classpath 'com.neenbedankt.gradle.plugins:android-apt:1.8'
  }
}

Add this to your module-level build.gradle:

apply plugin: 'android-apt'

android {
  ...
}

dependencies {
  compile 'com.jakewharton:butterknife:8.0.1'
  apt 'com.jakewharton:butterknife-compiler:8.0.1'
}

And then use Butterknife like this

 private Unbinder unbinder;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        View calcView = inflater.inflate(R.layout.content_main, container, false);

        unbinder = ButterKnife.bind(this, calcView);

        return calcView;
    }

    @Override
    public void onDestroyView() {
        super.onDestroyView();
        unbinder.unbind();
    }


    @OnClick(R.id.one)
    public void one() {

        Toast.makeText(getActivity(), "Working", Toast.LENGTH_SHORT).show();
        result.setText(result.getText().toString() + 1);
    }

Answer 2

Just use this structure:

@OnClick(R.id.some_btn)
public void someButtonOnClick(View view) {
    // do something
}

This is described here http://developer.android.com/reference/android/R.attr.html#onClick

Answer 3

This works for me:

@Override
 public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    View view = inflater.inflate(R.layout.fragment_home, container, false);
    ButterKnife.bind(getActivity(), view);
    return view;
}

Answer 4

If you are still having issue. Clean the project and try to run. It should fix. If you still have issue, call someButtonOnClick() in onCreate and run and remove it and again run it. It should work. It worked for me.