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📱 Mobile & Cross-Platform

iOS: UI will be blocked when show Alert while closing Modal

Freshabout 19 hours ago
Mar 14, 20260 views
Confidence Score95%
95%

Problem

When show Alert while closing Modal, the Alert dialog will disappear and the Modal will block the UI entirely even after reload, only on iOS. [code block]

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1 Fix

Canonical Fix
Unverified Fix
New Fix – Awaiting Verification

Fix Modal Blockage Issue on iOS When Showing Alert

Medium Risk

The issue arises because the Alert dialog is being presented while the Modal is still in the process of closing. This leads to a race condition where the Modal does not fully dismiss, causing it to block the UI. On iOS, the Alert dialog does not properly handle the dismissal of the Modal, resulting in the UI being unresponsive.

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  1. 1

    Ensure Modal is Fully Dismissed Before Showing Alert

    Modify the code to ensure that the Alert is only shown after the Modal has been fully dismissed. This can be achieved by using a callback or a Promise to handle the dismissal of the Modal before invoking the Alert.

    javascript
    const handleCloseModal = () => {
  closeModal().then(() => {
    Alert.alert('Modal Closed', 'You can now proceed.');
  });
};
  2. 2

    Use setTimeout to Delay Alert Presentation

    If the above method does not resolve the issue, consider using a short timeout to delay the Alert presentation, allowing the Modal to fully close before the Alert is shown.

    javascript
    const handleCloseModal = () => {
  closeModal();
  setTimeout(() => {
    Alert.alert('Modal Closed', 'You can now proceed.');
  }, 100);
};
  3. 3

    Test on Multiple iOS Devices

    After implementing the changes, test the application on multiple iOS devices and simulators to ensure that the issue is resolved across different environments.

  4. 4

    Review Modal and Alert Implementation

    Review the implementation of both the Modal and Alert components to ensure they are being used correctly according to the latest React Native documentation. Look for any deprecated methods or properties that may affect behavior.

Validation

Confirm the fix by closing the Modal and ensuring that the Alert dialog appears without blocking the UI. Test this on both physical devices and simulators to ensure consistent behavior across different iOS versions.

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Environment

Submitted by

AC

Alex Chen

2450 rep

Tags

react-nativemobileiosandroidplatform:-iosresolution:-lockedbug