The **InputMethodExtensionAbility** module provides the **InputMethodExtensionAbility** and **InputMethodExtensionContext** APIs that you can implement to develop input methods and manage their lifecycles.
> **NOTE**
>
> The initial APIs of this module are supported since API version 9. Newly added APIs will be marked with a superscript to indicate their earliest API version.
> The APIs of this module can be used only in the stage model.
## Modules to Import
```
import InputMethodExtensionAbility from '@ohos.inputmethodextensionability';
| context | [InputMethodExtensionContext](js-apis-inputmethod-extension-context.md) | Yes| No| Context of the **InputMethodExtension**, which is inherited from **ExtensionContext**.|
## InputMethodExtensionAbility.onCreate()
onCreate(want: Want): void;
Called when the **InputMethodExtension** ability is started to implement initialization.
| want | [Want](js-apis-application-Want.md) | Yes| Information related to the **InputMethodExtension** ability, including the ability name and bundle name. |
The **InputMethodExtensionContext** module, inherited from **ExtensionContext**, provides context for **InputMethodExtension** abilities.
You can use the APIs of this module to start, terminate, connect, and disconnect abilities.
> **NOTE**
>
> The initial APIs of this module are supported since API version 9. Newly added APIs will be marked with a superscript to indicate their earliest API version.
> The APIs of this module can be used only in the stage model.
## Modules to Import
```
import InputMethodExtensionContext from '@ohos.inputmethodextensioncontext';
```
## Usage
Before using the **InputMethodExtensionContext** module, you must define a child class that inherits from **InputMethodExtensionAbility**.
Switches to another input method. This API uses an asynchronous callback to return the result. This API can be used only in the stage model.
Switches to another input method. This API can be used only in the stage model. It uses an asynchronous callback to return the result. If the required two parameters are not passed in, an exception is thrown.
Switches to another input method. This API uses a promise to return the result. This API can be used only in the stage model.
Switches to another input method. This API can be used only in the stage model. It uses a promise to return the result. If the required parameter is not passed in, an exception is thrown.
In the following API examples, you must first use [getInputMethodController](#inputmethodgetinputmethodcontroller) to obtain an **InputMethodController** instance, and then call the APIs using the obtained instance.
In the following API examples, you must first use **[getInputMethodController](#inputmethodgetinputmethodcontroller)** to obtain an **InputMethodController** instance, and then call the APIs using the obtained instance.
Shows this soft keyboard. This API uses an asynchronous callback to return the result. If the required parameter is not passed in, an exception is thrown.
Hides this soft keyboard. This API uses an asynchronous callback to return the result. If the required parameter is not passed in, an exception is thrown.
In the following API examples, you must first use [getInputMethodSetting](#inputmethodgetinputmethodcontroller) to obtain an **InputMethodSetting** instance, and then call the APIs using the obtained instance.
In the following API examples, you must first use **[getInputMethodSetting](#inputmethodgetinputmethodcontroller)** to obtain an **InputMethodSetting** instance, and then call the APIs using the obtained instance.
Obtains a list of activated or deactivated input methods. This API uses an asynchronous callback to return the result. If the required two parameters are not passed in, an exception is thrown.
| enable | boolean | Yes | Whether to return a list of activated input methods. The value **true** means to return a list of activated input methods, and **false** means to return a list of deactivated input methods. |
| callback | Array<[InputMethodProperty](#inputmethodproperty8)> | Yes | Callback used to return a list of activated or deactivated input methods. |
Obtains a list of activated or deactivated input methods. This API uses a promise to return the result. If any parameter is passed in, an exception is thrown.
| enable | boolean | Yes | Whether to return a list of activated input methods. The value **true** means to return a list of activated input methods, and **false** means to return a list of deactivated input methods.|
Obtains the list of installed input methods. This API uses an asynchronous callback to return the result.
Obtains a list of installed input methods. This API uses an asynchronous callback to return the result. If the required parameter is not passed in, an exception is thrown.
Displays a dialog box for selecting an input method. This API uses an asynchronous callback to return the result.
Displays a dialog box for selecting an input method. This API uses an asynchronous callback to return the result. If the required parameter is not passed in, an exception is thrown.
Displays a dialog box for selecting an input method. This API uses an asynchronous callback to return the result.
Displays a dialog box for selecting an input method. This API uses a promise to return the result. If any parameter is passed in, an exception is thrown.
The **Timer** module provides basic timer capabilities. You can use the APIs of this module to execute functions at the specified time.
> **NOTE**
>
> The initial APIs of this module are supported since API version 3. Newly added APIs will be marked with a superscript to indicate their earliest API version.
## setTimeout
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@@ -7,6 +12,8 @@ setTimeout(handler[,delay[,…args]]): number
Sets a timer for the system to call a function after the timer goes off.
