Handle App Availability

This guide walks you through checking if the Get Mini application is installed on the user's device. You'll learn how to catch the exception when the app is missing and redirect users to the Google Play Store.

Requirements

Before following the steps, ensure you have:

• Android application with Intent launching capability
• Google Play Store access on the device

Important: Always implement this check before attempting to launch payment Intents to provide a better user experience.

App Availability Check

This section guides you through implementing exception handling to detect when the Get Mini app is not installed and guide users to install it.

Step 1: Wrap Intent Launch in Try-Catch

The following code demonstrates how to catch the exception:

Java

String playStoreUrl = "https://play.google.com/store/apps/details?id=es.android.redsys.Get Mini.movil"; try { // Attempt to launch the Get Mini intent paymentLauncher.launch(intent); } catch (ActivityNotFoundException e) { // Get Mini app is not installed showInstallDialog(playStoreUrl); }

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String playStoreUrl = "https://play.google.com/store/apps/details?id=es.android.redsys.Get Mini.movil"; try { // Attempt to launch the Get Mini intent paymentLauncher.launch(intent); } catch (ActivityNotFoundException e) { // Get Mini app is not installed showInstallDialog(playStoreUrl); }

Note: This approach works with both startActivityForResult and the modern ActivityResultLauncher API.

Step 2: Show Installation Dialog

When the Get Mini app is not found, display a dialog that explains the situation and provides an option to install the app from the Google Play Store.

Java

private void showInstallDialog(String playStoreUrl) { new AlertDialog.Builder(this) .setTitle("Get Mini Not Found") .setMessage("The Get Mini app must be installed to process payments.") .setPositiveButton("Install", (dialog, which) -> { // Open Play Store Intent storeIntent = new Intent(Intent.ACTION_VIEW); storeIntent.setData(Uri.parse(playStoreUrl)); startActivity(storeIntent); }) .setNegativeButton("Cancel", null) .show(); }

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private void showInstallDialog(String playStoreUrl) { new AlertDialog.Builder(this) .setTitle("Get Mini Not Found") .setMessage("The Get Mini app must be installed to process payments.") .setPositiveButton("Install", (dialog, which) -> { // Open Play Store Intent storeIntent = new Intent(Intent.ACTION_VIEW); storeIntent.setData(Uri.parse(playStoreUrl)); startActivity(storeIntent); }) .setNegativeButton("Cancel", null) .show(); }

Step 3: Handle Return from Play Store (Optional)

After the user returns from the Play Store, you may want to check if they installed the app and retry the transaction. You can implement this by checking app availability when your Activity resumes.

Java

@Override protected void onResume() { super.onResume(); // Check if user returned from Play Store and installed the app if (shouldRetryTransaction && isMposAppInstalled()) { retryTransaction(); } } private boolean isMposAppInstalled() { Intent intent = new Intent("es.redsys.paysys.mPOSRedsys_PAYMENT_REQUEST"); return getPackageManager().resolveActivity(intent, 0) != null; }

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@Override protected void onResume() { super.onResume(); // Check if user returned from Play Store and installed the app if (shouldRetryTransaction && isMposAppInstalled()) { retryTransaction(); } } private boolean isMposAppInstalled() { Intent intent = new Intent("es.redsys.paysys.mPOSRedsys_PAYMENT_REQUEST"); return getPackageManager().resolveActivity(intent, 0) != null; }

Next Steps

Now that you know how to handle app availability, you can:

• Review Prerequisites and Setup for environment requirements
• Learn about Process a Payment to implement payment transactions
• Read Handle Transaction Results to process Get Mini responses