# SpeculativeLoadingParameters

Artifact: [androidx.webkit:webkit](https://developer.android.com/jetpack/androidx/releases/webkit) [View Source](https://cs.android.com/search?q=file:androidx/webkit/SpeculativeLoadingParameters.java+class:androidx.webkit.SpeculativeLoadingParameters) Added in [1.13.0](https://developer.android.com/jetpack/androidx/releases/webkit#1.13.0)

*** ** * ** ***


```
@RequiresFeature(name = WebViewFeature.PROFILE_URL_PREFETCH, enforcement = "androidx.webkit.WebViewFeature#isFeatureSupported")
@Profile.ExperimentalUrlPrefetch
public final class SpeculativeLoadingParameters
```

<br />

*** ** * ** ***

Parameters for customizing the prefetch. Use the `https://developer.android.com/reference/androidx/webkit/SpeculativeLoadingParameters.Builder` to construct.

## Summary

| ### Nested types |
|---|
| `public final class https://developer.android.com/reference/androidx/webkit/SpeculativeLoadingParameters.Builder` **This class is deprecated.** Use `https://developer.android.com/reference/androidx/webkit/PrerenderParameters` or `https://developer.android.com/reference/androidx/webkit/PrefetchParameters` instead. <br /> |

| ### Public methods |
|---|---|
| `@https://jspecify.dev/docs/api/org/jspecify/annotations/NonNull.html https://developer.android.com/reference/java/util/Map.html<https://developer.android.com/reference/java/lang/String.html, https://developer.android.com/reference/java/lang/String.html>` | `https://developer.android.com/reference/androidx/webkit/SpeculativeLoadingParameters#getAdditionalHeaders()()` |
| `@https://jspecify.dev/docs/api/org/jspecify/annotations/Nullable.html https://developer.android.com/reference/androidx/webkit/NoVarySearchHeader` | `https://developer.android.com/reference/androidx/webkit/SpeculativeLoadingParameters#getExpectedNoVarySearchData()()` |
| `@https://jspecify.dev/docs/api/org/jspecify/annotations/Nullable.html https://developer.android.com/reference/java/lang/Integer.html` | `https://developer.android.com/reference/androidx/webkit/SpeculativeLoadingParameters#getVariationsId()()` |
| `boolean` | `https://developer.android.com/reference/androidx/webkit/SpeculativeLoadingParameters#isJavaScriptEnabled()()` |

## Public methods

### getAdditionalHeaders

Added in [1.13.0](https://developer.android.com/jetpack/androidx/releases/webkit#1.13.0)

```
public @NonNull Map<String, String> getAdditionalHeaders()
```

| Returns |
|---|---|
| `@https://jspecify.dev/docs/api/org/jspecify/annotations/NonNull.html https://developer.android.com/reference/java/util/Map.html<https://developer.android.com/reference/java/lang/String.html, https://developer.android.com/reference/java/lang/String.html>` | The map of the additional headers built using `https://developer.android.com/reference/androidx/webkit/SpeculativeLoadingParameters.Builder`. |

### getExpectedNoVarySearchData

Added in [1.13.0](https://developer.android.com/jetpack/androidx/releases/webkit#1.13.0)

```
public @Nullable NoVarySearchHeader getExpectedNoVarySearchData()
```

| Returns |
|---|---|
| `@https://jspecify.dev/docs/api/org/jspecify/annotations/Nullable.html https://developer.android.com/reference/androidx/webkit/NoVarySearchHeader` | The noVarySearch model built using `https://developer.android.com/reference/androidx/webkit/SpeculativeLoadingParameters.Builder`. |

### getVariationsId

Added in [1.16.0](https://developer.android.com/jetpack/androidx/releases/webkit#1.16.0)

```
public @Nullable Integer getVariationsId()
```

| Returns |
|---|---|
| `@https://jspecify.dev/docs/api/org/jspecify/annotations/Nullable.html https://developer.android.com/reference/java/lang/Integer.html` | The variations id built using `https://developer.android.com/reference/androidx/webkit/SpeculativeLoadingParameters.Builder`. |

### isJavaScriptEnabled

Added in [1.13.0](https://developer.android.com/jetpack/androidx/releases/webkit#1.13.0)

```
public boolean isJavaScriptEnabled()
```

| Returns |
|---|---|
| `boolean` | The javascript enabled setting built using `https://developer.android.com/reference/androidx/webkit/SpeculativeLoadingParameters.Builder`. |