# ObservableArrayMap Summary:[Ctors](https://developer.android.com/reference/android/databinding/ObservableArrayMap#pubctors)\|[Methods](https://developer.android.com/reference/android/databinding/ObservableArrayMap#pubmethods)\|[Inherited Methods](https://developer.android.com/reference/android/databinding/ObservableArrayMap#inhmethods)\|[\[Expand All\]](https://developer.android.com/reference/android/databinding/ObservableArrayMap#) # ObservableArrayMap ` public class ObservableArrayMap ` ` `` `` extends ArrayMap `` implements `[ObservableMap](https://developer.android.com/reference/android/databinding/ObservableMap)` ` |---|---|---|------------------------------------------------| | [java.lang.Object](http://developer.android.com/reference/java/lang/Object.html) |||| | ↳ | android.support.v4.util.SimpleArrayMap\ ||| | | ↳ | android.support.v4.util.ArrayMap\ || | | | ↳ | android.databinding.ObservableArrayMap\ |
*** ** * ** *** ## Summary | ### Public constructors || |-----------------------------------------------------------------------------------------------------------------------------------|---| | ` `[ObservableArrayMap](https://developer.android.com/reference/android/databinding/ObservableArrayMap#ObservableArrayMap())`() ` | | ### Public methods || |------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | ` void` | ` `[addOnMapChangedCallback](https://developer.android.com/reference/android/databinding/ObservableArrayMap#addOnMapChangedCallback(android.databinding.ObservableMap.OnMapChangedCallback, K, V>))`(`[OnMapChangedCallback](https://developer.android.com/reference/android/databinding/ObservableMap.OnMapChangedCallback)`, K, V> listener) ` Adds a callback to listen for changes to the ObservableMap. | | ` void` | ` `[clear](https://developer.android.com/reference/android/databinding/ObservableArrayMap#clear())`() ` | | ` V` | ` `[put](https://developer.android.com/reference/android/databinding/ObservableArrayMap#put(K, V))`(K k, V v) ` | | ` boolean` | ` `[removeAll](https://developer.android.com/reference/android/databinding/ObservableArrayMap#removeAll(java.util.Collection))`(`[Collection](http://developer.android.com/reference/java/util/Collection.html)` collection) ` | | ` V` | ` `[removeAt](https://developer.android.com/reference/android/databinding/ObservableArrayMap#removeAt(int))`(int index) ` | | ` void` | ` `[removeOnMapChangedCallback](https://developer.android.com/reference/android/databinding/ObservableArrayMap#removeOnMapChangedCallback(android.databinding.ObservableMap.OnMapChangedCallback, K, V>))`(`[OnMapChangedCallback](https://developer.android.com/reference/android/databinding/ObservableMap.OnMapChangedCallback)`, K, V> listener) ` Removes a previously added callback. | | ` boolean` | ` `[retainAll](https://developer.android.com/reference/android/databinding/ObservableArrayMap#retainAll(java.util.Collection))`(`[Collection](http://developer.android.com/reference/java/util/Collection.html)` collection) ` | | ` V` | ` `[setValueAt](https://developer.android.com/reference/android/databinding/ObservableArrayMap#setValueAt(int, V))`(int index, V value) ` | | ### Inherited methods | |-----------------------|---| | [![](https://developer.android.com/static/assets/images/styles/disclosure_down.png)](https://developer.android.com/reference/android/databinding/ObservableArrayMap#)From class` android.support.v4.util.ArrayMap ` |---------------------------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------| | ` boolean` | ` containsAll(`[Collection](http://developer.android.com/reference/java/util/Collection.html)` arg0) ` | | ` `[Set](http://developer.android.com/reference/java/util/Set.html)`<`[Entry](http://developer.android.com/reference/java/util/Map.Entry.html)`>` | ` entrySet() ` | | ` `[Set](http://developer.android.com/reference/java/util/Set.html)`` | ` keySet() ` | | ` void` | ` putAll(`[Map](http://developer.android.com/reference/java/util/Map.html)` arg0) ` | | ` boolean` | ` removeAll(`[Collection](http://developer.android.com/reference/java/util/Collection.html)` arg0) ` | | ` boolean` | ` retainAll(`[Collection](http://developer.android.com/reference/java/util/Collection.html)` arg0) ` | | ` `[Collection](http://developer.android.com/reference/java/util/Collection.html)`` | ` values() ` | || | [![](https://developer.android.com/static/assets/images/styles/disclosure_down.png)](https://developer.android.com/reference/android/databinding/ObservableArrayMap#)From class` android.support.v4.util.SimpleArrayMap ` |---------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------| | ` void` | ` clear() ` | | ` boolean` | ` containsKey(`[Object](http://developer.android.com/reference/java/lang/Object.html)` arg0) ` | | ` boolean` | ` containsValue(`[Object](http://developer.android.com/reference/java/lang/Object.html)` arg0) ` | | ` void` | ` ensureCapacity(int arg0) ` | | ` boolean` | ` equals(`[Object](http://developer.android.com/reference/java/lang/Object.html)` arg0) ` | | ` V` | ` get(`[Object](http://developer.android.com/reference/java/lang/Object.html)` arg0) ` | | ` int` | ` hashCode() ` | | ` int` | ` indexOfKey(`[Object](http://developer.android.com/reference/java/lang/Object.html)` arg0) ` | | ` boolean` | ` isEmpty() ` | | ` K` | ` keyAt(int arg0) ` | | ` V` | ` put(K arg0, V arg1) ` | | ` void` | ` putAll(SimpleArrayMap arg0) ` | | ` V` | ` remove(`[Object](http://developer.android.com/reference/java/lang/Object.html)` arg0) ` | | ` V` | ` removeAt(int arg0) ` | | ` V` | ` setValueAt(int arg0, V arg1) ` | | ` int` | ` size() ` | | ` `[String](http://developer.android.com/reference/java/lang/String.html) | ` toString() ` | | ` V` | ` valueAt(int arg0) ` | || | [![](https://developer.android.com/static/assets/images/styles/disclosure_down.png)](https://developer.android.com/reference/android/databinding/ObservableArrayMap#)From class` `[java.lang.Object](http://developer.android.com/reference/java/lang/Object.html)` ` |------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------| | ` `[Object](http://developer.android.com/reference/java/lang/Object.html) | ` clone() ` | | ` boolean` | ` equals(`[Object](http://developer.android.com/reference/java/lang/Object.html)` arg0) ` | | ` void` | ` finalize() ` | | ` final `[Class](http://developer.android.com/reference/java/lang/Class.html)`` | ` getClass() ` | | ` int` | ` hashCode() ` | | ` final void` | ` notify() ` | | ` final void` | ` notifyAll() ` | | ` `[String](http://developer.android.com/reference/java/lang/String.html) | ` toString() ` | | ` final void` | ` wait(long arg0, int arg1) ` | | ` final void` | ` wait(long arg0) ` | | ` final void` | ` wait() ` | || | [![](https://developer.android.com/static/assets/images/styles/disclosure_down.png)](https://developer.android.com/reference/android/databinding/ObservableArrayMap#)From interface` `[java.util.Map](http://developer.android.com/reference/java/util/Map.html)` ` |------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | ` abstract void` | ` clear() ` | | ` default V` | ` compute(K arg0, `[BiFunction](http://developer.android.com/reference/java/util/function/BiFunction.html)` arg1) ` | | ` default V` | ` computeIfAbsent(K arg0, `[Function](http://developer.android.com/reference/java/util/function/Function.html)` arg1) ` | | ` default V` | ` computeIfPresent(K arg0, `[BiFunction](http://developer.android.com/reference/java/util/function/BiFunction.html)` arg1) ` | | ` abstract boolean` | ` containsKey(`[Object](http://developer.android.com/reference/java/lang/Object.html)` arg0) ` | | ` abstract boolean` | ` containsValue(`[Object](http://developer.android.com/reference/java/lang/Object.html)` arg0) ` | | ` abstract `[Set](http://developer.android.com/reference/java/util/Set.html)`<`[Entry](http://developer.android.com/reference/java/util/Map.Entry.html)`>` | ` entrySet() ` | | ` abstract boolean` | ` equals(`[Object](http://developer.android.com/reference/java/lang/Object.html)` arg0) ` | | ` default void` | ` forEach(`[BiConsumer](http://developer.android.com/reference/java/util/function/BiConsumer.html)` arg0) ` | | ` abstract V` | ` get(`[Object](http://developer.android.com/reference/java/lang/Object.html)` arg0) ` | | ` default V` | ` getOrDefault(`[Object](http://developer.android.com/reference/java/lang/Object.html)` arg0, V arg1) ` | | ` abstract int` | ` hashCode() ` | | ` abstract boolean` | ` isEmpty() ` | | ` abstract `[Set](http://developer.android.com/reference/java/util/Set.html)`` | ` keySet() ` | | ` default V` | ` merge(K arg0, V arg1, `[BiFunction](http://developer.android.com/reference/java/util/function/BiFunction.html)` arg2) ` | | ` abstract V` | ` put(K arg0, V arg1) ` | | ` abstract void` | ` putAll(`[Map](http://developer.android.com/reference/java/util/Map.html)` arg0) ` | | ` default V` | ` putIfAbsent(K arg0, V arg1) ` | | ` default boolean` | ` remove(`[Object](http://developer.android.com/reference/java/lang/Object.html)` arg0, `[Object](http://developer.android.com/reference/java/lang/Object.html)` arg1) ` | | ` abstract V` | ` remove(`[Object](http://developer.android.com/reference/java/lang/Object.html)` arg0) ` | | ` default boolean` | ` replace(K arg0, V arg1, V arg2) ` | | ` default V` | ` replace(K arg0, V arg1) ` | | ` default void` | ` replaceAll(`[BiFunction](http://developer.android.com/reference/java/util/function/BiFunction.html)` arg0) ` | | ` abstract int` | ` size() ` | | ` abstract `[Collection](http://developer.android.com/reference/java/util/Collection.html)`` | ` values() ` | || | [![](https://developer.android.com/static/assets/images/styles/disclosure_down.png)](https://developer.android.com/reference/android/databinding/ObservableArrayMap#)From interface` `[android.databinding.ObservableMap](https://developer.android.com/reference/android/databinding/ObservableMap)` ` |------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | ` abstract void` | ` `[addOnMapChangedCallback](https://developer.android.com/reference/android/databinding/ObservableMap#addOnMapChangedCallback(android.databinding.ObservableMap.OnMapChangedCallback, K, V>))`(`[OnMapChangedCallback](https://developer.android.com/reference/android/databinding/ObservableMap.OnMapChangedCallback)`, K, V> callback) ` Adds a callback to listen for changes to the ObservableMap. | | ` abstract void` | ` `[removeOnMapChangedCallback](https://developer.android.com/reference/android/databinding/ObservableMap#removeOnMapChangedCallback(android.databinding.ObservableMap.OnMapChangedCallback, K, V>))`(`[OnMapChangedCallback](https://developer.android.com/reference/android/databinding/ObservableMap.OnMapChangedCallback)`, K, V> callback) ` Removes a previously added callback. | || ## Public constructors ### ObservableArrayMap ``` ObservableArrayMap () ```

## Public methods ### addOnMapChangedCallback ``` void addOnMapChangedCallback (OnMapChangedCallback, K, V> listener) ``` Adds a callback to listen for changes to the ObservableMap.
| Parameters || |------------|----------------------------------------------------------------------------| | `listener` | `OnMapChangedCallback`: The callback to start listening for events.
| ### clear ``` void clear () ```

### put ``` V put (K k, V v) ```

| Parameters || |-----|------------| | `k` | `K`
| | `v` | `V`
| | Returns || |-----|--------| | `V` |
| ### removeAll ``` boolean removeAll (Collection collection) ```

| Parameters || |--------------|---------------------| | `collection` | `Collection`
| | Returns || |-----------|--------| | `boolean` |
| ### removeAt ``` V removeAt (int index) ```

| Parameters || |---------|--------------| | `index` | `int`
| | Returns || |-----|--------| | `V` |
| ### removeOnMapChangedCallback ``` void removeOnMapChangedCallback (OnMapChangedCallback, K, V> listener) ``` Removes a previously added callback.
| Parameters || |------------|-------------------------------------------------------------------------------------------------| | `listener` | `OnMapChangedCallback`: The callback that no longer needs to be notified of map changes.
| ### retainAll ``` boolean retainAll (Collection collection) ```

| Parameters || |--------------|---------------------| | `collection` | `Collection`
| | Returns || |-----------|--------| | `boolean` |
| ### setValueAt ``` V setValueAt (int index, V value) ```

| Parameters || |---------|--------------| | `index` | `int`
| | `value` | `V`
| | Returns || |-----|--------| | `V` |
| - ## Annotations - [Bindable](https://developer.android.com/reference/android/databinding/Bindable) - [BindingAdapter](https://developer.android.com/reference/android/databinding/BindingAdapter) - [BindingConversion](https://developer.android.com/reference/android/databinding/BindingConversion) - [BindingMethod](https://developer.android.com/reference/android/databinding/BindingMethod) - [BindingMethods](https://developer.android.com/reference/android/databinding/BindingMethods) - [InverseBindingAdapter](https://developer.android.com/reference/android/databinding/InverseBindingAdapter) - [InverseBindingMethod](https://developer.android.com/reference/android/databinding/InverseBindingMethod) - [InverseBindingMethods](https://developer.android.com/reference/android/databinding/InverseBindingMethods) - [InverseMethod](https://developer.android.com/reference/android/databinding/InverseMethod) - ## Interfaces - [DataBindingComponent](https://developer.android.com/reference/android/databinding/DataBindingComponent) - [InverseBindingListener](https://developer.android.com/reference/android/databinding/InverseBindingListener) - [Observable](https://developer.android.com/reference/android/databinding/Observable) - [ObservableList](https://developer.android.com/reference/android/databinding/ObservableList) - [ObservableMap](https://developer.android.com/reference/android/databinding/ObservableMap) - ## Classes - [BaseObservable](https://developer.android.com/reference/android/databinding/BaseObservable) - [CallbackRegistry](https://developer.android.com/reference/android/databinding/CallbackRegistry) - [CallbackRegistry.NotifierCallback](https://developer.android.com/reference/android/databinding/CallbackRegistry.NotifierCallback) - [DataBindingUtil](https://developer.android.com/reference/android/databinding/DataBindingUtil) - [ListChangeRegistry](https://developer.android.com/reference/android/databinding/ListChangeRegistry) - [MapChangeRegistry](https://developer.android.com/reference/android/databinding/MapChangeRegistry) - [MergedDataBinderMapper](https://developer.android.com/reference/android/databinding/MergedDataBinderMapper) - [Observable.OnPropertyChangedCallback](https://developer.android.com/reference/android/databinding/Observable.OnPropertyChangedCallback) - [ObservableArrayList](https://developer.android.com/reference/android/databinding/ObservableArrayList) - [ObservableArrayMap](https://developer.android.com/reference/android/databinding/ObservableArrayMap) - [ObservableBoolean](https://developer.android.com/reference/android/databinding/ObservableBoolean) - [ObservableByte](https://developer.android.com/reference/android/databinding/ObservableByte) - [ObservableChar](https://developer.android.com/reference/android/databinding/ObservableChar) - [ObservableDouble](https://developer.android.com/reference/android/databinding/ObservableDouble) - [ObservableField](https://developer.android.com/reference/android/databinding/ObservableField) - [ObservableFloat](https://developer.android.com/reference/android/databinding/ObservableFloat) - [ObservableInt](https://developer.android.com/reference/android/databinding/ObservableInt) - [ObservableList.OnListChangedCallback](https://developer.android.com/reference/android/databinding/ObservableList.OnListChangedCallback) - [ObservableLong](https://developer.android.com/reference/android/databinding/ObservableLong) - [ObservableMap.OnMapChangedCallback](https://developer.android.com/reference/android/databinding/ObservableMap.OnMapChangedCallback) - [ObservableParcelable](https://developer.android.com/reference/android/databinding/ObservableParcelable) - [ObservableShort](https://developer.android.com/reference/android/databinding/ObservableShort) - [OnRebindCallback](https://developer.android.com/reference/android/databinding/OnRebindCallback) - [PropertyChangeRegistry](https://developer.android.com/reference/android/databinding/PropertyChangeRegistry) - [ViewDataBinding](https://developer.android.com/reference/android/databinding/ViewDataBinding) - [ViewStubProxy](https://developer.android.com/reference/android/databinding/ViewStubProxy)