# BillingFlowParams


```
public class BillingFlowParams
```

<br />

*** ** * ** ***

Parameters to initiate a purchase flow. See `https://developer.android.com/reference/com/android/billingclient/api/BillingClient#launchBillingFlow(android.app.Activity,com.android.billingclient.api.BillingFlowParams)`.

## Summary

| ### Nested types |
|---|
| `public class https://developer.android.com/reference/com/android/billingclient/api/BillingFlowParams.Builder` Helps to construct `https://developer.android.com/reference/com/android/billingclient/api/BillingFlowParams` that are used to initiate a purchase flow. |
| `public final class https://developer.android.com/reference/com/android/billingclient/api/BillingFlowParams.ProductDetailsParams` Params that describe the product to be purchased and the offer to purchase with. |
| `public class https://developer.android.com/reference/com/android/billingclient/api/BillingFlowParams.ProductDetailsParams.Builder` Helps to construct a `https://developer.android.com/reference/com/android/billingclient/api/BillingFlowParams.ProductDetailsParams`. |
| `public class https://developer.android.com/reference/com/android/billingclient/api/BillingFlowParams.ProductDetailsParams.SubscriptionProductReplacementParams` Params that describe a subscription product replacement behavior. |
| `public class https://developer.android.com/reference/com/android/billingclient/api/BillingFlowParams.ProductDetailsParams.SubscriptionProductReplacementParams.Builder` Helps to construct ReplacementParams. |
| `@https://developer.android.com/reference/java/lang/annotation/Retention.html(value = https://developer.android.com/reference/java/lang/annotation/java.lang.annotation.RetentionPolicy.html#SOURCE) public annotation https://developer.android.com/reference/com/android/billingclient/api/BillingFlowParams.ProductDetailsParams.SubscriptionProductReplacementParams.ReplacementMode` Supported replacement modes to replace an existing product with a new one. |
| `public class https://developer.android.com/reference/com/android/billingclient/api/BillingFlowParams.SubscriptionUpdateParams` Params that describe a subscription update. |
| `public class https://developer.android.com/reference/com/android/billingclient/api/BillingFlowParams.SubscriptionUpdateParams.Builder` Helps to construct `https://developer.android.com/reference/com/android/billingclient/api/BillingFlowParams.SubscriptionUpdateParams`. |
| `@https://developer.android.com/reference/java/lang/annotation/Retention.html(value = https://developer.android.com/reference/java/lang/annotation/java.lang.annotation.RetentionPolicy.html#SOURCE) public annotation https://developer.android.com/reference/com/android/billingclient/api/BillingFlowParams.SubscriptionUpdateParams.ReplacementMode` Supported replacement modes to replace an existing subscription with a new one. |

| ### Public methods |
|---|---|
| `https://developer.android.com/reference/com/android/billingclient/api/DeveloperBillingOptionParams` | `https://developer.android.com/reference/com/android/billingclient/api/BillingFlowParams#getDeveloperBillingOptionParams()()` Returns the `https://developer.android.com/reference/com/android/billingclient/api/DeveloperBillingOptionParams`. |
| `static https://developer.android.com/reference/com/android/billingclient/api/BillingFlowParams.Builder` | `https://developer.android.com/reference/com/android/billingclient/api/BillingFlowParams#newBuilder()()` Constructs a new `https://developer.android.com/reference/com/android/billingclient/api/BillingFlowParams.Builder` instance. |

## Public methods

### getDeveloperBillingOptionParams

```
public DeveloperBillingOptionParams getDeveloperBillingOptionParams()
```

Returns the `https://developer.android.com/reference/com/android/billingclient/api/DeveloperBillingOptionParams`.

### newBuilder

```
public static BillingFlowParams.Builder newBuilder()
```

Constructs a new `https://developer.android.com/reference/com/android/billingclient/api/BillingFlowParams.Builder` instance.