MainActivity.kt

// MainActivity.kt - Demonstrating Chrome Android share Intent bug
// Bug: Chrome reuses Intent.EXTRA_TEXT across multiple share actions
// 
// Expected: Each share sends the current URL in EXTRA_TEXT
// Actual: Chrome sends the FIRST URL for all subsequent shares
//
// Test environment:
// - Android 15
// - Chrome 142.0.7444.48
// - Activity launch mode: singleTask + documentLaunchMode="never"

package com.fchevitarese.repertory

import android.content.Intent
import android.os.Bundle
import android.util.Log
import io.flutter.embedding.android.FlutterActivity

class MainActivity: FlutterActivity() {
    private var sharedText: String? = null

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        Log.d("MainActivity", "onCreate() called")
        // Do NOT process intent here - onResume() will be called next
    }

    override fun onNewIntent(intent: Intent) {
        super.onNewIntent(intent)
        Log.d("MainActivity", "onNewIntent() called - NEW share detected")
        
        // CRITICAL: Update the activity's intent reference
        // This ensures getIntent() returns the NEW intent in onResume()
        setIntent(intent)
    }

    override fun onResume() {
        super.onResume()
        Log.d("MainActivity", "onResume() called - processing intent")
        
        // ALWAYS process the current intent in onResume()
        // This works for both onCreate() and onNewIntent() flows
        handleIntent(intent)
    }

    private fun handleIntent(intent: Intent?) {
        if (intent == null) return

        // Check if it's a text share (e.g., URL from Chrome)
        if (Intent.ACTION_SEND == intent.action && intent.type == "text/plain") {
            val extraText = intent.getStringExtra(Intent.EXTRA_TEXT)
            val extraSubject = intent.getStringExtra(Intent.EXTRA_SUBJECT)
            
            Log.d("MainActivity", "=== SHARE DETECTED ===")
            Log.d("MainActivity", "EXTRA_TEXT: $extraText")
            Log.d("MainActivity", "EXTRA_SUBJECT: $extraSubject")

            // CHROME BUG INVESTIGATION: Check ClipData
            val clipData = intent.clipData
            if (clipData != null && clipData.itemCount > 0) {
                val clipText = clipData.getItemAt(0).text?.toString()
                val clipUri = clipData.getItemAt(0).uri?.toString()

                Log.d("MainActivity", "ClipData.text: $clipText")
                Log.d("MainActivity", "ClipData.uri: $clipUri")

                // Attempted workaround: prefer ClipData.text if different
                if (clipText != null && clipText != extraText) {
                    if (clipText.startsWith("http://") || clipText.startsWith("https://")) {
                        Log.d("MainActivity", "Using ClipData.text instead of EXTRA_TEXT")
                        // This never executes - Chrome always sends null in ClipData.text
                    }
                }
            }

            // Process the shared text
            if (extraText != null && extraText != sharedText) {
                sharedText = extraText
                Log.d("MainActivity", "NEW shared text: $sharedText")
                
                // TODO: Pass to Flutter or process the URL
                
                // Reset for next share
                sharedText = null
            } else {
                Log.d("MainActivity", "Same text already processed, ignoring")
            }
        }
    }
}

/*
REPRODUCTION STEPS:
1. Install app on Android device
2. Open Chrome and navigate to: https://www.example.com/page1
3. Tap Share → Select this app
4. In Chrome, navigate to: https://www.example.com/page2
5. Tap Share → Select this app again

EXPECTED LOG OUTPUT:
First share:
  EXTRA_TEXT: https://www.example.com/page1 ✓
  EXTRA_SUBJECT: Page 1 ✓

Second share:
  EXTRA_TEXT: https://www.example.com/page2 ✓
  EXTRA_SUBJECT: Page 2 ✓

ACTUAL LOG OUTPUT:
First share:
  EXTRA_TEXT: https://www.example.com/page1 ✓
  EXTRA_SUBJECT: Page 1 ✓
  ClipData.text: null
  ClipData.uri: content://.../screenshot.png

Second share:
  EXTRA_TEXT: https://www.example.com/page1 ✗ (WRONG - reused from first share)
  EXTRA_SUBJECT: Page 2 ✓ (correct)
  ClipData.text: null
  ClipData.uri: content://.../screenshot.png

NOTES:
- Chrome correctly updates EXTRA_SUBJECT with new page title
- Chrome DOES NOT update EXTRA_TEXT (reuses old URL)
- ClipData.text is ALWAYS null (no workaround possible)
- ClipData.uri only contains screenshot file path
- Firefox and Edge DO NOT have this bug
- Force-closing Chrome resets the cached Intent

AndroidManifest.xml configuration:
<activity
    android:name=".MainActivity"
    android:launchMode="singleTask"
    android:documentLaunchMode="never"
    ...>
    <intent-filter>
        <action android:name="android.intent.action.SEND" />
        <category android:name="android.intent.category.DEFAULT" />
        <data android:mimeType="text/plain" />
    </intent-filter>
</activity>
*/