public class ExampleActivity extends AppCompatActivity {
 private final static String TAG = ExampleActivity.class.getSimpleName();
 String butterKnifeStr;
 Drawable butterKnifeDrawable;
 Button butterKnifeBtn;
 ImageView butterKnifeIv;

 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_butter_knife);
  initResource();
  initViews();
 }

 private void initViews() {
  butterKnifeBtn = (Button) findViewById(R.id.btn_butter_knife);
  butterKnifeBtn.setOnClickListener(new View.OnClickListener() {
   @Override
   public void onClick(View v) {
    Log.e(TAG, "onButterKnifeBtnClick");
   }
  });
  butterKnifeIv = (ImageView) findViewById(R.id.iv_butter_knife);
  butterKnifeBtn.setText(butterKnifeStr);
  butterKnifeIv.setImageDrawable(butterKnifeDrawable);
 }

 private void initResource() {
  butterKnifeStr = getString(R.string.title_btn_butter_knife);
  butterKnifeDrawable = getDrawable(R.mipmap.ic_launcher);
 }
}

public class ButterKnifeActivity extends AppCompatActivity {
 private final static String TAG = ButterKnifeActivity.class.getSimpleName();
 private Unbinder unbinder;
 @BindString(R.string.title_btn_butter_knife)
 String butterKnifeStr;
 @BindDrawable(R.mipmap.ic_launcher)
 Drawable butterKnifeDrawable;
 @BindView(R.id.btn_butter_knife)
 Button butterKnifeBtn;
 @BindView(R.id.iv_butter_knife)
 ImageView butterKnifeIv;

 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_butter_knife);
  unbinder = ButterKnife.bind(this);
  initViews();
 }

 private void initViews() {
  butterKnifeBtn.setText(butterKnifeStr);
  butterKnifeIv.setImageDrawable(butterKnifeDrawable);
 }

 @OnClick(R.id.btn_butter_knife)
 public void onButterKnifeBtnClick(View view) {
  Log.e(TAG, "onButterKnifeBtnClick");
 }

 @Override
 protected void onDestroy() {
  super.onDestroy();
  unbinder.unbind();
 }
}

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

apply plugin: 'com.neenbedankt.android-apt'

android {
 ...
}

dependencies {
 compile 'com.jakewharton:butterknife:8.1.0'
 apt 'com.jakewharton:butterknife-compiler:8.1.0'
}

class ExampleActivity extends Activity {
 @BindView(R.id.title) TextView title;
 @BindView(R.id.subtitle) TextView subtitle;
 @BindView(R.id.footer) TextView footer;

 @Override public void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.simple_activity);
 ButterKnife.bind(this);
 // TODO Use fields...
 }
}

public class FancyFragment extends Fragment {
 @BindView(R.id.button1) Button button1;
 @BindView(R.id.button2) Button button2;
 private Unbinder unbinder;

 @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
 View view = inflater.inflate(R.layout.fancy_fragment, container, false);
 unbinder = ButterKnife.bind(this, view);
 // TODO Use fields...
 return view;
 }

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

public class MyAdapter extends BaseAdapter {
 @Override public View getView(int position, View view, ViewGroup parent) {
 ViewHolder holder;
 if (view != null) {
  holder = (ViewHolder) view.getTag();
 } else {
  view = inflater.inflate(R.layout.whatever, parent, false);
  holder = new ViewHolder(view);
  view.setTag(holder);
 }

 holder.name.setText("John Doe");
 // etc...

 return view;
 }

 static class ViewHolder {
 @BindView(R.id.title) TextView name;
 @BindView(R.id.job_title) TextView jobTitle;

 public ViewHolder(View view) {
  ButterKnife.bind(this, view);
 }
 }
}

@BindView(R.id.btn_butter_knife)
Button butterKnifeBtn;
@BindViews({R.id.tv_butter_knife1,R.id.tv_butter_knife2,R.id.tv_butter_knife3})
List<TextView> textViews;

@BindString(R.string.title_btn_butter_knife)
 String butterKnifeStr;//string注解使用
 @BindDrawable(R.mipmap.ic_launcher)
 Drawable butterKnifeDrawable;//Drawable注解使用
 @BindBitmap(R.mipmap.ic_launcher)
 Bitmap butterKnifeBitmap;;//Bitmap注解使用
 @BindArray(R.array.day_of_week)
 String weeks[];//数组
 @BindColor(R.color.colorPrimary)
 int colorPrimary;//color注解使用
 @BindDimen(R.dimen.activity_horizontal_margin)
 Float spacer;

 /**
  * 带参数
  */
 @OnClick(R.id.btn_butter_knife)
 public void onButterKnifeBtnClick() {
 }

 /**
  * 带参数
  */
 @OnClick(R.id.btn_butter_knife)
 public void onButterKnifeBtnClick(View view) {
  Log.e(TAG, "onButterKnifeBtnClick");
 }

 /**
  * 带参数
  * @param button
  */
 @OnClick(R.id.btn_butter_knife)
 public void onButterKnifeBtnClick(Button button) {
  Log.e(TAG, "onButterKnifeBtnClick");
 }

 /**
  * 两个不同的button都相应onButterKnifeBtnClick事件回调
  *
  * @param button
  */
 @OnClick({R.id.btn_butter_knife, R.id.btn_butter_knife1})
 public void onButterKnifeBtnClick(Button button) {
  Log.e(TAG, "onButterKnifeBtnClick");
 }

public class FancyButton extends Button {
 @OnClick
 public void onClick() {
 // TODO do something!
 }
}

 editText.addTextChangedListener(new TextWatcher() {
   @Override
   public void beforeTextChanged(CharSequence s, int start, int count, int after) {

   }

   @Override
   public void onTextChanged(CharSequence s, int start, int before, int count) {

   }

   @Override
   public void afterTextChanged(Editable s) {

   }
  });

 @OnTextChanged(value = R.id.nameEditText, callback = OnTextChanged.Callback.BEFORE_TEXT_CHANGED)
 void beforeTextChanged(CharSequence s, int start, int count, int after) {

 }
 @OnTextChanged(value = R.id.nameEditText, callback = OnTextChanged.Callback.TEXT_CHANGED)
 void onTextChanged(CharSequence s, int start, int before, int count) {

 }
 @OnTextChanged(value = R.id.nameEditText, callback = OnTextChanged.Callback.AFTER_TEXT_CHANGED)
 void afterTextChanged(Editable s) {

 }

@Nullable @BindView(R.id.might_not_be_there)
TextView mightNotBeThere;

@Optional @OnClick(R.id.maybe_missing) 
void onMaybeMissingClicked() {
 // TODO ...
}

ButterKnife.apply(nameViews, DISABLE);
ButterKnife.apply(nameViews, ENABLED, false);

static final ButterKnife.Action<View> DISABLE = new ButterKnife.Action<View>() {
 @Override public void apply(View view, int index) {
 view.setEnabled(false);
 }
};
static final ButterKnife.Setter<View, Boolean> ENABLED = new ButterKnife.Setter<View, Boolean>() {
 @Override public void set(View view, Boolean value, int index) {
 view.setEnabled(value);
 }
};

ButterKnife.apply(nameViews, View.ALPHA, 0.0f);

View view = LayoutInflater.from(context).inflate(R.layout.thing, null);
TextView firstName = ButterKnife.findById(view, R.id.first_name);
TextView lastName = ButterKnife.findById(view, R.id.last_name);
ImageView photo = ButterKnife.findById(view, R.id.photo);