Fix issue with custom flow PaymentSheet getting clipped

CHANGELOG.md

@@ -15,6 +15,8 @@
   match new brand guidelines.
 * [FIXED][5480](https://github.com/stripe/stripe-android/pull/5480) `FlowController` now correctly
   preserves the previously selected payment method for guests.
+* [FIXED][5545](https://github.com/stripe/stripe-android/pull/5545) Fix an issue where custom flow 
+  PaymentSheet UI would have the bottom of the form cut off
 
 ## 20.11.0 - 2022-08-29
 This release adds postal code validation for PaymentSheet and fixed a fileprovider naming bug for Identity.

paymentsheet-example/src/androidTestDebug/java/com/stripe/android/TestFieldPopulation.kt

@@ -6,8 +6,11 @@ import androidx.compose.ui.test.performTextInput
 import androidx.test.ext.junit.runners.AndroidJUnit4
 import androidx.test.platform.app.InstrumentationRegistry
 import androidx.test.uiautomator.UiDevice
+import com.stripe.android.model.PaymentMethod
+import com.stripe.android.test.core.AuthorizeAction
 import com.stripe.android.test.core.Automatic
 import com.stripe.android.test.core.Billing
+import com.stripe.android.test.core.Browser
 import com.stripe.android.test.core.Currency
 import com.stripe.android.test.core.Customer
 import com.stripe.android.test.core.DelayedPMs
@@ -90,6 +93,24 @@ class TestFieldPopulation {
         authorizationAction = null
     )
 
+    private val bancontact = TestParameters(
+        lpmRepository.fromCode("bancontact")!!,
+        Customer.New,
+        LinkState.Off,
+        GooglePayState.Off,
+        Currency.EUR,
+        IntentType.Pay,
+        Billing.Off,
+        shipping = Shipping.Off,
+        delayed = DelayedPMs.Off,
+        automatic = Automatic.Off,
+        saveCheckboxValue = false,
+        saveForFutureUseCheckboxVisible = false,
+        useBrowser = Browser.Chrome,
+        authorizationAction = AuthorizeAction.Authorize,
+        merchantCountryCode = "GB"
+    )
+
     @Ignore("Testing of dropdowns is not yet supported")
     fun testDropdowns() {
 
@@ -140,6 +161,18 @@ class TestFieldPopulation {
         }
     }
 
+    @Test
+    fun testSinglePaymentMethodWithoutGooglePayAndKeyboardInput() {
+        testDriver.confirmNewOrGuestComplete(
+            bancontact.copy(
+                supportedPaymentMethods = listOf(PaymentMethod.Type.Bancontact.code)
+            )
+        ) {
+            composeTestRule.onNodeWithText("Full name")
+                .performTextInput("Jenny Rosen")
+        }
+    }
+
     companion object {
         private val lpmRepository = LpmRepository(
             LpmRepository.LpmRepositoryArguments(

paymentsheet-example/src/androidTestDebug/java/com/stripe/android/test/core/PlaygroundTestDriver.kt

@@ -120,7 +120,9 @@ class PlaygroundTestDriver(
         setup(testParameters)
         launchComplete()
 
-        selectors.paymentSelection.click()
+        if (testParameters.supportedPaymentMethods.size > 1) {
+            selectors.paymentSelection.click()
+        }
 
         // This takes a screenshot so that translation strings of placeholders
         // and labels and design can all be verified
@@ -405,6 +407,10 @@ class PlaygroundTestDriver(
             PaymentSheetPlaygroundActivity.USE_SNAPSHOT_RETURNING_CUSTOMER_EXTRA,
             testParameters.snapshotReturningCustomer
         )
+        intent.putExtra(
+            PaymentSheetPlaygroundActivity.SUPPORTED_PAYMENT_METHODS_EXTRA,
+            testParameters.supportedPaymentMethods.toTypedArray()
+        )
         val scenario = ActivityScenario.launch<PaymentSheetPlaygroundActivity>(intent)
         scenario.onActivity { activity ->
 

paymentsheet-example/src/androidTestDebug/java/com/stripe/android/test/core/TestParameters.kt

@@ -1,5 +1,6 @@
 package com.stripe.android.test.core
 
+import com.stripe.android.model.PaymentMethodCode
 import com.stripe.android.paymentsheet.PaymentSheet
 import com.stripe.android.ui.core.forms.resources.LpmRepository.SupportedPaymentMethod
 
@@ -25,7 +26,8 @@ data class TestParameters(
     val forceDarkMode: Boolean? = null,
     val appearance: PaymentSheet.Appearance = PaymentSheet.Appearance(),
     val snapshotReturningCustomer: Boolean = false,
-    val merchantCountryCode: String
+    val merchantCountryCode: String,
+    val supportedPaymentMethods: List<PaymentMethodCode> = listOf()
 )
 
 /**

paymentsheet-example/src/main/java/com/stripe/android/paymentsheet/example/playground/activity/PaymentSheetPlaygroundActivity.kt

@@ -186,7 +186,8 @@ class PaymentSheetPlaygroundActivity : AppCompatActivity() {
                     linkEnabled,
                     setShippingAddress,
                     setAutomaticPaymentMethods,
-                    backendUrl
+                    backendUrl,
+                    intent.extras?.getStringArray(SUPPORTED_PAYMENT_METHODS_EXTRA)?.toList()
                 )
             }
         }
@@ -470,6 +471,7 @@ class PaymentSheetPlaygroundActivity : AppCompatActivity() {
         const val FORCE_DARK_MODE_EXTRA = "ForceDark"
         const val APPEARANCE_EXTRA = "Appearance"
         const val USE_SNAPSHOT_RETURNING_CUSTOMER_EXTRA = "UseSnapshotReturningCustomer"
+        const val SUPPORTED_PAYMENT_METHODS_EXTRA = "SupportedPaymentMethods"
         private const val merchantName = "Example, Inc."
         private const val sharedPreferencesName = "playgroundToggles"
 

paymentsheet-example/src/main/java/com/stripe/android/paymentsheet/example/playground/model/PlaygroundCheckoutModel.kt

@@ -60,7 +60,8 @@ data class CheckoutRequest(
     val set_shipping_address: Boolean,
     val automatic_payment_methods: Boolean,
     val use_link: Boolean,
-    val merchant_country_code: String
+    val merchant_country_code: String,
+    val supported_payment_methods: List<String>?
 )
 
 @Serializable

paymentsheet-example/src/main/java/com/stripe/android/paymentsheet/example/playground/viewmodel/PaymentSheetPlaygroundViewModel.kt

@@ -144,7 +144,8 @@ class PaymentSheetPlaygroundViewModel(
         linkEnabled: Boolean,
         setShippingAddress: Boolean,
         setAutomaticPaymentMethod: Boolean,
-        backendUrl: String
+        backendUrl: String,
+        supportedPaymentMethods: List<String>?
     ) {
         customerConfig.value = null
         clientSecret.value = null
@@ -158,7 +159,8 @@ class PaymentSheetPlaygroundViewModel(
             set_shipping_address = setShippingAddress,
             automatic_payment_methods = setAutomaticPaymentMethod,
             use_link = linkEnabled,
-            merchant_country_code = merchantCountry.value
+            merchant_country_code = merchantCountry.value,
+            supported_payment_methods = supportedPaymentMethods
         )
 
         Fuel.post(backendUrl + "checkout")

paymentsheet/src/main/java/com/stripe/android/paymentsheet/ui/BaseSheetActivity.kt

@@ -1,5 +1,6 @@
 package com.stripe.android.paymentsheet.ui
 
+import android.animation.LayoutTransition
 import android.content.pm.ActivityInfo
 import android.content.res.ColorStateList
 import android.graphics.Insets
@@ -98,6 +99,9 @@ internal abstract class BaseSheetActivity<ResultType> : AppCompatActivity() {
             }
         }
 
+        bottomSheet.layoutTransition.enableTransitionType(LayoutTransition.CHANGING)
+        fragmentContainerParent.layoutTransition.enableTransitionType(LayoutTransition.CHANGING)
+
         bottomSheetController.setup()
 
         bottomSheetController.shouldFinish.observe(this) { shouldFinish ->

paymentsheet/src/test/java/com/stripe/android/paymentsheet/PaymentSheetActivityTest.kt

@@ -1,5 +1,6 @@
 package com.stripe.android.paymentsheet
 
+import android.animation.LayoutTransition
 import android.content.Context
 import androidx.activity.result.ActivityResultLauncher
 import androidx.arch.core.executor.testing.InstantTaskExecutorRule
@@ -963,6 +964,28 @@ internal class PaymentSheetActivityTest {
         }
     }
 
+    @Test
+    fun `verify animation is enabled for layout transition changes`() {
+        val scenario = activityScenario()
+        scenario.launch(intent).onActivity { activity ->
+            // wait for bottom sheet to animate in
+            idleLooper()
+
+            assertThat(
+                activity.viewBinding.bottomSheet.layoutTransition.isTransitionTypeEnabled(
+                    LayoutTransition.CHANGING
+                )
+            ).isTrue()
+
+            assertThat(
+                activity.viewBinding.fragmentContainerParent.layoutTransition
+                    .isTransitionTypeEnabled(
+                        LayoutTransition.CHANGING
+                    )
+            ).isTrue()
+        }
+    }
+
     private fun currentFragment(activity: PaymentSheetActivity) =
         activity.supportFragmentManager.findFragmentById(activity.viewBinding.fragmentContainer.id)