Hey there, let’s dig into this WebView permission crash issue—since you’ve fixed similar problems before with manifest permissions, let’s break down the likely culprits here:

• Double-check your manifest permissions placement & completeness
  Make sure your permissions are declared outside the <application> tag in AndroidManifest.xml. For basic WebView functionality, you’ll definitely need:

  <uses-permission android:name="android.permission.INTERNET" />
  

  If your WebView interacts with network state (like showing offline status), add:

  <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
  

  For file uploads/downloads, note that Android 13+ replaced legacy storage permissions with media-specific ones (e.g., READ_MEDIA_IMAGES instead of READ_EXTERNAL_STORAGE).

• Don’t forget runtime permissions for API 23+
  Dangerous permissions (like storage, camera if your WebView uses it) can’t just be declared in the manifest—you need to request them dynamically in code before the WebView attempts the related action. For example, if your WebView allows image uploads, you’ll need to prompt the user for READ_MEDIA_IMAGES (or READ_EXTERNAL_STORAGE for older versions) at runtime.

• Grab the crash log immediately
  This is the most critical step! The Logcat output from your crashing device will explicitly tell you which permission is missing, or which operation triggered the error. Look for lines like SecurityException with a message about "permission denied"—that’ll point you straight to the issue.

• Check WebView-specific settings
  Sometimes permission crashes can stem from WebView configurations rather than manifest entries. For example:

  • If loading local files, ensure you’ve set webSettings.setAllowFileAccess(true)
  • For camera access in WebView (like photo uploads), you’ll need both the CAMERA permission and to enable webSettings.setMediaPlaybackRequiresUserGesture(false) (if needed)

• Account for Android version quirks

  • Android 10+: Scoped storage changes may require using FileProvider to share files with WebView instead of direct file paths
  • Android 12+: New permissions like POST_NOTIFICATIONS might be needed if your WebView triggers notifications
  • Android 11+: Permissions can be auto-reset if the app is unused, so make sure your permission request flow handles re-prompting users if needed

内容的提问来源于stack exchange，提问作者user1433743