ButterKnife (Butter Knife 6.1.0 API)

java.lang.Object
- butterknife.ButterKnife

```
public final class ButterKnife
extends Object
```
View "injection" utilities. Use this class to simplify finding views and attaching listeners by injecting them.
Injecting views from your activity is as easy as:
```
 public class ExampleActivity extends Activity {
    @InjectView(R.id.title) EditText titleView;
    @InjectView(R.id.subtitle) EditText subtitleView;

    @Override protected void onCreate(Bundle savedInstanceState) {
     super.onCreate(savedInstanceState);
     setContentView(R.layout.example_activity);
     ButterKnife.inject(this);
   }
 }
 
```
Injection can be performed directly on an activity, a view, or a dialog. Alternate objects to inject can be specified along with an activity, view, or dialog.
Group multiple views together into a List or array.
```
  @InjectViews({R.id.first_name, R.id.middle_name, R.id.last_name})
 List nameViews;
 
```
There are three convenience methods for working with view collections:
- apply(List, Action) – Applies an action to each view.
- apply(List, Setter, Object) – Applies a setter value to each view.
- apply(List, Property, Object) – Applies a property value to each view.
To inject listeners to your views you can annotate your methods:
```
  @OnClick(R.id.submit) void onSubmit() {
   // React to button click.
 }
 
```
Any number of parameters from the listener may be used on the method.
```
  @OnItemClick(R.id.tweet_list) void onTweetClicked(int position) {
   // React to tweet click.
 }
 
```
Be default, views are required to be present in the layout for both field and method injections. If a view is optional add the @Optional annotation.
```
  @Optional @InjectView(R.id.title) TextView subtitleView;
 
```
See Also:

InjectView, InjectViews, OnCheckedChanged, OnClick, OnEditorAction, OnFocusChange, OnItemClick, OnItemLongClick, OnItemSelected, OnLongClick, OnPageChange, OnTextChanged, OnTouch

Nested Class Summary

Nested Classes
Modifier and Type	Class and Description
`static interface`	`ButterKnife.Action<T extends android.view.View>` An action that can be applied to a list of views.
`static class`	`ButterKnife.Finder` DO NOT USE: Exposed for generated code.
`static interface`	`ButterKnife.Injector<T>` DO NOT USE: Exposed for generated code.
`static interface`	`ButterKnife.Setter<T extends android.view.View,V>` A setter that can apply a value to a list of views.

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method and Description
`static <T extends android.view.View> void`	`apply(List<T> list, ButterKnife.Action<? super T> action)` Apply the specified `action` across the `list` of views.
`static <T extends android.view.View,V> void`	`apply(List<T> list, ButterKnife.Setter<? super T,V> setter, V value)` Set the `value` using the specified `setter` across the `list` of views.
`static <T extends android.view.View,V> void`	`apply(List<T> list, android.util.Property<? super T,V> setter, V value)` Apply the specified `value` across the `list` of views using the `property`.
`static <T extends android.view.View> T`	`findById(android.app.Activity activity, int id)` Simpler version of `Activity.findViewById(int)` which infers the target type.
`static <T extends android.view.View> T`	`findById(android.app.Dialog dialog, int id)` Simpler version of `Dialog.findViewById(int)` which infers the target type.
`static <T extends android.view.View> T`	`findById(android.view.View view, int id)` Simpler version of `View.findViewById(int)` which infers the target type.
`static void`	`inject(android.app.Activity target)` Inject annotated fields and methods in the specified `Activity`.
`static void`	`inject(android.app.Dialog target)` Inject annotated fields and methods in the specified `Dialog`.
`static void`	`inject(Object target, android.app.Activity source)` Inject annotated fields and methods in the specified `target` using the `source` `Activity` as the view root.
`static void`	`inject(Object target, android.app.Dialog source)` Inject annotated fields and methods in the specified `target` using the `source` `Dialog` as the view root.
`static void`	`inject(Object target, android.view.View source)` Inject annotated fields and methods in the specified `target` using the `source` `View` as the view root.
`static void`	`inject(android.view.View target)` Inject annotated fields and methods in the specified `View`.
`static void`	`reset(Object target)` Reset fields annotated with `@InjectView` and `@InjectViews` to `null`.
`static void`	`setDebug(boolean debug)` Control whether debug logging is enabled.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - setDebug
```
public static void setDebug(boolean debug)
```
    Control whether debug logging is enabled.
  - inject
```
public static void inject(android.app.Activity target)
```
    Inject annotated fields and methods in the specified Activity. The current content view is used as the view root.
    
    Parameters:
    
    target - Target activity for field injection.
  - inject
```
public static void inject(android.view.View target)
```
    Inject annotated fields and methods in the specified View. The view and its children are used as the view root.
    
    Parameters:
    
    target - Target view for field injection.
  - inject
```
public static void inject(android.app.Dialog target)
```
    Inject annotated fields and methods in the specified Dialog. The current content view is used as the view root.
    
    Parameters:
    
    target - Target dialog for field injection.
  - inject
```
public static void inject(Object target,
                          android.app.Activity source)
```
    Inject annotated fields and methods in the specified target using the source Activity as the view root.
    
    Parameters:
    
    target - Target class for field injection.
    
    source - Activity on which IDs will be looked up.
  - inject
```
public static void inject(Object target,
                          android.view.View source)
```
    Inject annotated fields and methods in the specified target using the source View as the view root.
    
    Parameters:
    
    target - Target class for field injection.
    
    source - View root on which IDs will be looked up.
  - inject
```
public static void inject(Object target,
                          android.app.Dialog source)
```
    Inject annotated fields and methods in the specified target using the source Dialog as the view root.
    
    Parameters:
    
    target - Target class for field injection.
    
    source - Dialog on which IDs will be looked up.
  - reset
```
public static void reset(Object target)
```
    Reset fields annotated with @InjectView and @InjectViews to null.
    This should only be used in the onDestroyView method of a fragment.
    
    Parameters:
    
    target - Target class for field reset.
  - apply
```
public static <T extends android.view.View> void apply(List<T> list,
                                                       ButterKnife.Action<? super T> action)
```
    Apply the specified action across the list of views.
  - apply
```
public static <T extends android.view.View,V> void apply(List<T> list,
                                                         ButterKnife.Setter<? super T,V> setter,
                                                         V value)
```
    Set the value using the specified setter across the list of views.
  - apply
```
public static <T extends android.view.View,V> void apply(List<T> list,
                                                         android.util.Property<? super T,V> setter,
                                                         V value)
```
    Apply the specified value across the list of views using the property.
  - findById
```
public static <T extends android.view.View> T findById(android.view.View view,
                                                       int id)
```
    Simpler version of View.findViewById(int) which infers the target type.
  - findById
```
public static <T extends android.view.View> T findById(android.app.Activity activity,
                                                       int id)
```
    Simpler version of Activity.findViewById(int) which infers the target type.
  - findById
```
public static <T extends android.view.View> T findById(android.app.Dialog dialog,
                                                       int id)
```
    Simpler version of Dialog.findViewById(int) which infers the target type.

Class ButterKnife

Nested Class Summary

Method Summary

Methods inherited from class java.lang.Object

Method Detail

setDebug

inject

inject

inject

inject

inject

inject

reset

apply

apply

apply

findById

findById

findById