# A2uiFormatStringFunction

Artifact: [androidx.a2ui:a2ui-model](https://developer.android.com/jetpack/androidx/releases/a2ui) [View Source](https://cs.android.com/search?q=file:androidx/a2ui/model/catalog/functions/A2uiFormatStringFunction.kt+class:androidx.a2ui.model.catalog.functions.A2uiFormatStringFunction) Added in [1.0.0-alpha02](https://developer.android.com/jetpack/androidx/releases/a2ui#1.0.0-alpha02)

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```
public final class A2uiFormatStringFunction implements A2uiFunction
```

<br />

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Performs string interpolation of data model values and other functions.

Use this `https://developer.android.com/reference/androidx/a2ui/model/catalog/A2uiFunction` to format strings with expressions.

## Summary

| ### Public fields |
|---|---|
| `static final @https://developer.android.com/reference/androidx/annotation/NonNull https://developer.android.com/reference/androidx/a2ui/model/catalog/functions/A2uiFormatStringFunction` | `https://developer.android.com/reference/androidx/a2ui/model/catalog/functions/A2uiFormatStringFunction#INSTANCE()` |

| ### Public methods |
|---|---|
| `https://developer.android.com/reference/java/lang/Object.html` | `https://developer.android.com/reference/androidx/a2ui/model/catalog/functions/A2uiFormatStringFunction#execute(kotlin.collections.Map,androidx.a2ui.model.protocol.A2uiExecutionContext)( @https://developer.android.com/reference/androidx/annotation/NonNull https://developer.android.com/reference/java/util/Map.html<@https://developer.android.com/reference/androidx/annotation/NonNull https://developer.android.com/reference/java/lang/String.html, @https://developer.android.com/reference/androidx/annotation/NonNull https://developer.android.com/reference/java/lang/Object.html> args, @https://developer.android.com/reference/androidx/annotation/NonNull https://developer.android.com/reference/androidx/a2ui/model/protocol/A2uiExecutionContext executionContext )` Interpolates the given string with bindings. |
| `@https://developer.android.com/reference/androidx/annotation/NonNull https://developer.android.com/reference/androidx/a2ui/model/catalog/A2uiFunctionDefinition` | `https://developer.android.com/reference/androidx/a2ui/model/catalog/functions/A2uiFormatStringFunction#getDefinition()()` The definition of the function. |

## Public fields

### INSTANCE

```
public static final @NonNull A2uiFormatStringFunction INSTANCE
```

## Public methods

### execute

```
public Object execute(
    @NonNull Map<@NonNull String, @NonNull Object> args,
    @NonNull A2uiExecutionContext executionContext
)
```

Interpolates the given string with bindings.

| Parameters |
|---|---|
| `@https://developer.android.com/reference/androidx/annotation/NonNull https://developer.android.com/reference/java/util/Map.html<@https://developer.android.com/reference/androidx/annotation/NonNull https://developer.android.com/reference/java/lang/String.html, @https://developer.android.com/reference/androidx/annotation/NonNull https://developer.android.com/reference/java/lang/Object.html> args` | arguments containing the "value" string to format |
| `@https://developer.android.com/reference/androidx/annotation/NonNull https://developer.android.com/reference/androidx/a2ui/model/protocol/A2uiExecutionContext executionContext` | context allowing to execute other functions, evaluate dynamic payloads and resolving data bindings |

| Returns |
|---|---|
| `https://developer.android.com/reference/java/lang/Object.html` | the formatted string |

### getDefinition

```
public @NonNull A2uiFunctionDefinition getDefinition()
```

The definition of the function.