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Jetpack compose sample #186
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194 changes: 194 additions & 0 deletions
194
...t-kotlin/src/main/java/com/paypal/checkoutsamples/order/KotlinJetpackComposeQuickStart.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,194 @@ | ||
| package com.paypal.checkoutsamples.order | ||
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| import android.os.Bundle | ||
| import android.util.Log | ||
| import androidx.activity.ComponentActivity | ||
| import androidx.activity.compose.setContent | ||
| import androidx.compose.animation.AnimatedVisibility | ||
| import androidx.compose.foundation.layout.Arrangement | ||
| import androidx.compose.foundation.layout.Box | ||
| import androidx.compose.foundation.layout.Column | ||
| import androidx.compose.foundation.layout.Spacer | ||
| import androidx.compose.foundation.layout.fillMaxSize | ||
| import androidx.compose.foundation.layout.fillMaxWidth | ||
| import androidx.compose.foundation.layout.height | ||
| import androidx.compose.foundation.layout.padding | ||
| import androidx.compose.foundation.layout.size | ||
| import androidx.compose.material.Button | ||
| import androidx.compose.material.CircularProgressIndicator | ||
| import androidx.compose.material.MaterialTheme | ||
| import androidx.compose.material.Surface | ||
| import androidx.compose.material.Text | ||
| import androidx.compose.runtime.Composable | ||
| import androidx.compose.runtime.LaunchedEffect | ||
| import androidx.compose.runtime.collectAsState | ||
| import androidx.compose.runtime.getValue | ||
| import androidx.compose.runtime.mutableStateOf | ||
| import androidx.compose.runtime.remember | ||
| import androidx.compose.runtime.setValue | ||
| import androidx.compose.ui.Alignment | ||
| import androidx.compose.ui.Modifier | ||
| import androidx.compose.ui.text.style.TextAlign | ||
| import androidx.compose.ui.unit.dp | ||
| import com.paypal.checkout.PayPalCheckout | ||
| import com.paypal.checkout.approve.OnApprove | ||
| import com.paypal.checkout.cancel.OnCancel | ||
| import com.paypal.checkout.createorder.CreateOrder | ||
| import com.paypal.checkout.createorder.CurrencyCode | ||
| import com.paypal.checkout.createorder.OrderIntent | ||
| import com.paypal.checkout.createorder.ShippingPreference | ||
| import com.paypal.checkout.createorder.UserAction | ||
| import com.paypal.checkout.error.OnError | ||
| import com.paypal.checkout.order.CaptureOrderResult | ||
| import com.paypal.checkoutsamples.order.usecase.CreateOrderRequest | ||
| import com.paypal.checkoutsamples.order.usecase.CreateOrderUseCase | ||
| import com.paypal.checkoutsamples.ui.theme.AndroidNativeCheckoutSamplesTheme | ||
| import kotlinx.coroutines.flow.MutableStateFlow | ||
| import kotlinx.coroutines.flow.StateFlow | ||
| import kotlinx.coroutines.flow.update | ||
|
|
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| class KotlinJetpackComposeQuickStart : ComponentActivity() { | ||
| private val checkoutState = MutableStateFlow<PaypalCheckoutState>(Loading) | ||
| private val checkOutSdk:PayPalCheckout | ||
| get() = PayPalCheckout | ||
| private val createdItems = mutableListOf<CreatedItem>() | ||
| override fun onCreate(savedInstanceState: Bundle?) { | ||
| super.onCreate(savedInstanceState) | ||
| registerPaypalCheckoutCallback(checkOutSdk) | ||
| val createOrderUseCase by lazy { CreateOrderUseCase() } | ||
|
|
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| setContent { | ||
| AndroidNativeCheckoutSamplesTheme { | ||
| Surface(modifier = Modifier.fillMaxSize(), color = MaterialTheme.colors.background) { | ||
| PaymentScreen(paypalSdkInstance = checkOutSdk, orderUseCase = createOrderUseCase, | ||
| checkoutState = checkoutState, | ||
| createdItems = createdItems) | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
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| /* represents the different states to be observed when payment is initiated */ | ||
| sealed interface PaypalCheckoutState | ||
| object Loading : PaypalCheckoutState | ||
| object OrderPaidForSuccessfully : PaypalCheckoutState | ||
| object OrderCapturingFailed : PaypalCheckoutState | ||
| object OrderPaymentCancelled : PaypalCheckoutState | ||
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| @JvmInline | ||
| value class OrderPaymentFailedWithAnError(val errorMsg: String) : PaypalCheckoutState | ||
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| fun registerPaypalCheckoutCallback(checkoutSdk: PayPalCheckout) { | ||
| checkoutSdk.registerCallbacks(onApprove = OnApprove { approval -> | ||
| approval.orderActions.capture { result -> | ||
| val message = when (result) { | ||
| is CaptureOrderResult.Success -> { | ||
| checkoutState.update { OrderPaidForSuccessfully } | ||
| "payment successful. Thank you for shopping with us" | ||
| } | ||
|
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| is CaptureOrderResult.Error -> { | ||
| checkoutState.update { OrderCapturingFailed } | ||
| "failed to capture your order" | ||
| } | ||
| } | ||
| Log.i("ComposeActivityTag",message) | ||
| } | ||
| }, onCancel = OnCancel { | ||
| checkoutState.update { OrderPaymentCancelled } | ||
| Log.i("ComposeActivityTag","payment cancelled") | ||
| }, onError = OnError { errorInfo -> | ||
| checkoutState.update { OrderPaymentFailedWithAnError(errorInfo.reason) } | ||
| Log.i("ComposeActivityTag","the following error occurred while paying ${errorInfo.reason}") | ||
| }) | ||
| } | ||
| @Composable | ||
| fun PaymentScreen(modifier: Modifier=Modifier, | ||
| paypalSdkInstance:PayPalCheckout, | ||
| orderUseCase: CreateOrderUseCase, | ||
| checkoutState:StateFlow<PaypalCheckoutState>, | ||
| createdItems: List<CreatedItem>){ | ||
| var observeCheckoutState by remember { mutableStateOf(false) } | ||
| var checkoutStateMsg by remember { mutableStateOf("") } | ||
| val _checkoutState by checkoutState.collectAsState(Loading) | ||
| when(observeCheckoutState){ | ||
| true->{ | ||
| CircularProgressIndicator(modifier = Modifier.size(200.dp)) | ||
| ObservePaypalCheckoutState(_checkoutState){ | ||
| observeState,msg-> | ||
| observeCheckoutState = observeState | ||
| checkoutStateMsg=msg | ||
| } | ||
| } | ||
| else->{ | ||
| Box(modifier = modifier.fillMaxSize(), contentAlignment = Alignment.Center){ | ||
| Column(modifier = Modifier, verticalArrangement = Arrangement.SpaceEvenly, horizontalAlignment = Alignment.CenterHorizontally){ | ||
| Spacer(Modifier.height(20.dp)) | ||
| AnimatedVisibility(visible = checkoutStateMsg.isNotEmpty()){ | ||
| Text(checkoutStateMsg, textAlign = TextAlign.Center) | ||
| } | ||
| Spacer(Modifier.height(20.dp)) | ||
| Button(modifier=Modifier.fillMaxWidth() | ||
| .padding(horizontal = 20.dp), | ||
| onClick = { | ||
| // initiate payment | ||
| observeCheckoutState=true | ||
| initiatePaymentMethod(paypalSdkInstance, orderUseCase, createdItems) | ||
| }){ | ||
| Text("Complete Purchase") | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } | ||
| /* Observes the different check-out states and updates the screen with the correct message | ||
| * Can be customized according to the user-needs */ | ||
| @Composable | ||
| private fun ObservePaypalCheckoutState(checkoutState:PaypalCheckoutState, | ||
| updateObserveCheckoutState:(Boolean,String)->Unit){ | ||
| LaunchedEffect(checkoutState){ | ||
| when(checkoutState){ | ||
| Loading -> Log.d("ComposeActivityTag","Initiating order capture..") | ||
| OrderCapturingFailed -> { | ||
| // stop observing and show the default view to enable the user to initiate payment again | ||
| updateObserveCheckoutState(false,"Order capturing failed..") | ||
| Log.d("ComposeActivityTag","Order capturing failed..") | ||
| } | ||
| OrderPaidForSuccessfully ->{ | ||
| Log.d("ComposeActivityTag","Order capturing success") | ||
| // stop observing and show the default view to enable the user to initiate payment again | ||
| updateObserveCheckoutState(false, "Order capturing success") | ||
| } | ||
| OrderPaymentCancelled ->{ | ||
| Log.d("ComposeActivityTag","Order payment cancelled!") | ||
| updateObserveCheckoutState(false,"Order payment cancelled!") | ||
| } | ||
| is OrderPaymentFailedWithAnError ->{ | ||
| updateObserveCheckoutState(false,"Order payment failed with the following error ${checkoutState.errorMsg}") | ||
| Log.d("ComposeActivityTag","Order payment failed with the following error ${checkoutState.errorMsg}") | ||
| } | ||
| } | ||
| } | ||
| } | ||
| /* Creates the order item needed by paypal checkout sdk */ | ||
| private fun initiatePaymentMethod( | ||
| paypalSdkInstance: PayPalCheckout, | ||
| orderUseCase: CreateOrderUseCase, | ||
| createdItems: List<CreatedItem> | ||
| ) { | ||
| // create your order request | ||
| val createOrderRequest = CreateOrderRequest( | ||
| orderIntent = OrderIntent.CAPTURE, | ||
| userAction = UserAction.PAY_NOW, shippingPreference = ShippingPreference.NO_SHIPPING, | ||
| currencyCode = CurrencyCode.USD, createdItems = createdItems | ||
| ) | ||
| val orderObject = orderUseCase.execute(createOrderRequest) | ||
| // start check out process | ||
| paypalSdkInstance.startCheckout(createOrder = CreateOrder.invoke { actions -> | ||
| actions.create(orderObject) { orderId -> | ||
| Log.d("ComposeActivityTag", "Order id $orderId") | ||
| } | ||
| }) | ||
| } | ||
| } | ||
8 changes: 8 additions & 0 deletions
8
quickstart-kotlin/src/main/java/com/paypal/checkoutsamples/ui/theme/Color.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,8 @@ | ||
| package com.paypal.checkoutsamples.ui.theme | ||
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| import androidx.compose.ui.graphics.Color | ||
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| val Purple200 = Color(0xFFBB86FC) | ||
| val Purple500 = Color(0xFF6200EE) | ||
| val Purple700 = Color(0xFF3700B3) | ||
| val Teal200 = Color(0xFF03DAC5) |
11 changes: 11 additions & 0 deletions
11
quickstart-kotlin/src/main/java/com/paypal/checkoutsamples/ui/theme/Shape.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,11 @@ | ||
| package com.paypal.checkoutsamples.ui.theme | ||
|
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| import androidx.compose.foundation.shape.RoundedCornerShape | ||
| import androidx.compose.material.Shapes | ||
| import androidx.compose.ui.unit.dp | ||
|
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| val Shapes = Shapes( | ||
| small = RoundedCornerShape(4.dp), | ||
| medium = RoundedCornerShape(4.dp), | ||
| large = RoundedCornerShape(0.dp) | ||
| ) |
44 changes: 44 additions & 0 deletions
44
quickstart-kotlin/src/main/java/com/paypal/checkoutsamples/ui/theme/Theme.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,44 @@ | ||
| package com.paypal.checkoutsamples.ui.theme | ||
|
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| import androidx.compose.foundation.isSystemInDarkTheme | ||
| import androidx.compose.material.MaterialTheme | ||
| import androidx.compose.material.darkColors | ||
| import androidx.compose.material.lightColors | ||
| import androidx.compose.runtime.Composable | ||
|
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| private val DarkColorPalette = darkColors( | ||
| primary = Purple200, | ||
| primaryVariant = Purple700, | ||
| secondary = Teal200 | ||
| ) | ||
|
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| private val LightColorPalette = lightColors( | ||
| primary = Purple500, | ||
| primaryVariant = Purple700, | ||
| secondary = Teal200 | ||
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| /* Other default colors to override | ||
| background = Color.White, | ||
| surface = Color.White, | ||
| onPrimary = Color.White, | ||
| onSecondary = Color.Black, | ||
| onBackground = Color.Black, | ||
| onSurface = Color.Black, | ||
| */ | ||
| ) | ||
|
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| @Composable | ||
| fun AndroidNativeCheckoutSamplesTheme(darkTheme: Boolean = isSystemInDarkTheme(), content: @Composable () -> Unit) { | ||
| val colors = if (darkTheme) { | ||
| DarkColorPalette | ||
| } else { | ||
| LightColorPalette | ||
| } | ||
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| MaterialTheme( | ||
| colors = colors, | ||
| typography = Typography, | ||
| shapes = Shapes, | ||
| content = content | ||
| ) | ||
| } |
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I would better make a separate file for this Interface.
or might be better if we can keep the same callback message that is coming from
PayPal SDKThere was a problem hiding this comment.
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Haha bet you to it.
I can make a separate file for this interface since relying on the callback message coming from
Paypal Sdkmight not be that flexible because of the tight coupling of the app andPaypal Sdk. If thePaypal Sdkcallback message change, you'll might have to refactor a lot of code to match the new changes.Imo, making your own 'state' interface is better but I am open to guidance from you.